*initHEADmaster

21 files changed, 5105 insertions, 0 deletions

diff --git a/source/3rd-party/SDL2/src/video/wayland/SDL_waylandclipboard.c b/source/3rd-party/SDL2/src/video/wayland/SDL_waylandclipboard.c
new file mode 100644
index 0000000..5fd826b
--- /dev/null
+++ b/source/3rd-party/SDL2/src/video/wayland/SDL_waylandclipboard.c
@@ -0,0 +1,123 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+#include "../../SDL_internal.h"
+
+#if SDL_VIDEO_DRIVER_WAYLAND
+
+#include "SDL_waylanddatamanager.h"
+#include "SDL_waylandevents_c.h"
+
+int
+Wayland_SetClipboardText(_THIS, const char *text)
+{
+    SDL_VideoData *video_data = NULL;
+    SDL_WaylandDataDevice *data_device = NULL;
+    
+    int status = 0;
+ 
+    if (_this == NULL || _this->driverdata == NULL) {
+        status = SDL_SetError("Video driver uninitialized");
+    } else {
+        video_data = _this->driverdata;
+        /* TODO: Support more than one seat */ 
+        data_device = Wayland_get_data_device(video_data->input);
+        if (text[0] != '\0') {
+            SDL_WaylandDataSource* source = Wayland_data_source_create(_this);
+            Wayland_data_source_add_data(source, TEXT_MIME, text,
+                                         strlen(text) + 1); 
+
+            status = Wayland_data_device_set_selection(data_device, source);
+            if (status != 0) {
+                Wayland_data_source_destroy(source);
+            }
+        } else {
+            status = Wayland_data_device_clear_selection(data_device);
+        }
+    }
+
+    return status;
+}
+
+char *
+Wayland_GetClipboardText(_THIS)
+{
+    SDL_VideoData *video_data = NULL;
+    SDL_WaylandDataDevice *data_device = NULL;
+
+    char *text = NULL;
+
+    void *buffer = NULL;
+    size_t length = 0;
+ 
+    if (_this == NULL || _this->driverdata == NULL) {
+        SDL_SetError("Video driver uninitialized");
+    } else {
+        video_data = _this->driverdata;
+        /* TODO: Support more than one seat */ 
+        data_device = Wayland_get_data_device(video_data->input);
+        if (data_device->selection_offer != NULL) {
+            buffer = Wayland_data_offer_receive(data_device->selection_offer,
+                                                &length, TEXT_MIME, SDL_TRUE);
+            if (length > 0) {
+                text = (char*) buffer;
+            } 
+        } else if (data_device->selection_source != NULL) {
+            buffer = Wayland_data_source_get_data(data_device->selection_source,
+                                                  &length, TEXT_MIME, SDL_TRUE);
+            if (length > 0) {
+                text = (char*) buffer;
+            } 
+        }
+    }
+
+    if (text == NULL) {
+        text = SDL_strdup("");
+    }
+
+    return text;
+}
+
+SDL_bool
+Wayland_HasClipboardText(_THIS)
+{
+    SDL_VideoData *video_data = NULL;
+    SDL_WaylandDataDevice *data_device = NULL;
+
+    SDL_bool result = SDL_FALSE;    
+    if (_this == NULL || _this->driverdata == NULL) {
+        SDL_SetError("Video driver uninitialized");
+    } else {
+        video_data = _this->driverdata;
+        data_device = Wayland_get_data_device(video_data->input);
+        if (data_device != NULL && Wayland_data_offer_has_mime(
+                data_device->selection_offer, TEXT_MIME)) {
+            result = SDL_TRUE;
+        } else if(data_device != NULL && Wayland_data_source_has_mime(
+                data_device->selection_source, TEXT_MIME)) {
+            result = SDL_TRUE;
+        }
+    }
+    return result;
+}
+
+#endif /* SDL_VIDEO_DRIVER_WAYLAND */
+
+/* vi: set ts=4 sw=4 expandtab: */
diff --git a/source/3rd-party/SDL2/src/video/wayland/SDL_waylandclipboard.h b/source/3rd-party/SDL2/src/video/wayland/SDL_waylandclipboard.h
new file mode 100644
index 0000000..467e1c7
--- /dev/null
+++ b/source/3rd-party/SDL2/src/video/wayland/SDL_waylandclipboard.h
@@ -0,0 +1,32 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+#include "../../SDL_internal.h"
+
+#ifndef SDL_waylandclipboard_h_
+#define SDL_waylandclipboard_h_
+
+extern int Wayland_SetClipboardText(_THIS, const char *text);
+extern char *Wayland_GetClipboardText(_THIS);
+extern SDL_bool Wayland_HasClipboardText(_THIS);
+
+#endif /* SDL_waylandclipboard_h_ */
+
+/* vi: set ts=4 sw=4 expandtab: */
diff --git a/source/3rd-party/SDL2/src/video/wayland/SDL_waylanddatamanager.c b/source/3rd-party/SDL2/src/video/wayland/SDL_waylanddatamanager.c
new file mode 100644
index 0000000..f1b9742
--- /dev/null
+++ b/source/3rd-party/SDL2/src/video/wayland/SDL_waylanddatamanager.c
@@ -0,0 +1,468 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+#include "../../SDL_internal.h"
+
+#if SDL_VIDEO_DRIVER_WAYLAND
+
+#include <fcntl.h>
+#include <unistd.h>
+#include <limits.h>
+#include <signal.h>
+
+#include "SDL_stdinc.h"
+#include "SDL_assert.h"
+#include "../../core/unix/SDL_poll.h"
+
+#include "SDL_waylandvideo.h"
+#include "SDL_waylanddatamanager.h"
+
+#include "SDL_waylanddyn.h"
+
+static ssize_t
+write_pipe(int fd, const void* buffer, size_t total_length, size_t *pos)
+{
+    int ready = 0;
+    ssize_t bytes_written = 0;
+    ssize_t length = total_length - *pos;
+
+    sigset_t sig_set;
+    sigset_t old_sig_set;
+    struct timespec zerotime = {0};
+
+    ready = SDL_IOReady(fd, SDL_TRUE, 1 * 1000);
+
+    sigemptyset(&sig_set);
+    sigaddset(&sig_set, SIGPIPE);  
+
+    pthread_sigmask(SIG_BLOCK, &sig_set, &old_sig_set); 
+
+    if (ready == 0) {
+        bytes_written = SDL_SetError("Pipe timeout");
+    } else if (ready < 0) {
+        bytes_written = SDL_SetError("Pipe select error");
+    } else {
+        if (length > 0) {
+            bytes_written = write(fd, (Uint8*)buffer + *pos, SDL_min(length, PIPE_BUF));
+        }
+
+        if (bytes_written > 0) {
+            *pos += bytes_written;
+        }
+    }
+
+    sigtimedwait(&sig_set, 0, &zerotime);
+    pthread_sigmask(SIG_SETMASK, &old_sig_set, NULL);
+
+    return bytes_written;
+}
+
+static ssize_t
+read_pipe(int fd, void** buffer, size_t* total_length, SDL_bool null_terminate)
+{
+    int ready = 0;
+    void* output_buffer = NULL;
+    char temp[PIPE_BUF];
+    size_t new_buffer_length = 0;
+    ssize_t bytes_read = 0;
+    size_t pos = 0;
+
+    ready = SDL_IOReady(fd, SDL_FALSE, 1 * 1000);
+  
+    if (ready == 0) {
+        bytes_read = SDL_SetError("Pipe timeout");
+    } else if (ready < 0) {
+        bytes_read = SDL_SetError("Pipe select error");
+    } else {
+        bytes_read = read(fd, temp, sizeof(temp));
+    }
+
+    if (bytes_read > 0) {
+        pos = *total_length;
+        *total_length += bytes_read;
+
+        if (null_terminate == SDL_TRUE) {
+            new_buffer_length = *total_length + 1;
+        } else {
+            new_buffer_length = *total_length;
+        }
+
+        if (*buffer == NULL) {
+            output_buffer = SDL_malloc(new_buffer_length);
+        } else {
+            output_buffer = SDL_realloc(*buffer, new_buffer_length);
+        }           
+        
+        if (output_buffer == NULL) {
+            bytes_read = SDL_OutOfMemory();
+        } else {
+            SDL_memcpy((Uint8*)output_buffer + pos, temp, bytes_read);
+
+            if (null_terminate == SDL_TRUE) {
+                SDL_memset((Uint8*)output_buffer + (new_buffer_length - 1), 0, 1);
+            }
+            
+            *buffer = output_buffer;
+        }
+    }
+
+    return bytes_read;
+}
+
+#define MIME_LIST_SIZE 4
+
+static const char* mime_conversion_list[MIME_LIST_SIZE][2] = {
+    {"text/plain", TEXT_MIME},
+    {"TEXT", TEXT_MIME},
+    {"UTF8_STRING", TEXT_MIME},
+    {"STRING", TEXT_MIME}
+};
+
+const char*
+Wayland_convert_mime_type(const char *mime_type)
+{
+    const char *found = mime_type;
+
+    size_t index = 0;
+
+    for (index = 0; index < MIME_LIST_SIZE; ++index) {
+        if (strcmp(mime_conversion_list[index][0], mime_type) == 0) {
+            found = mime_conversion_list[index][1];
+            break;
+        }
+    }
+    
+    return found;
+}
+
+static SDL_MimeDataList*
+mime_data_list_find(struct wl_list* list, 
+                    const char* mime_type)
+{
+    SDL_MimeDataList *found = NULL;
+
+    SDL_MimeDataList *mime_list = NULL;
+    wl_list_for_each(mime_list, list, link) { 
+        if (strcmp(mime_list->mime_type, mime_type) == 0) {
+            found = mime_list;
+            break;
+        }
+    }    
+    return found;
+}
+
+static int
+mime_data_list_add(struct wl_list* list, 
+                   const char* mime_type,
+                   void* buffer, size_t length)
+{
+    int status = 0;
+    size_t mime_type_length = 0;
+
+    SDL_MimeDataList *mime_data = NULL;
+
+    mime_data = mime_data_list_find(list, mime_type);
+
+    if (mime_data == NULL) {
+        mime_data = SDL_calloc(1, sizeof(*mime_data));
+        if (mime_data == NULL) {
+            status = SDL_OutOfMemory();
+        } else {
+            WAYLAND_wl_list_insert(list, &(mime_data->link));
+
+            mime_type_length = strlen(mime_type) + 1;
+            mime_data->mime_type = SDL_malloc(mime_type_length);
+            if (mime_data->mime_type == NULL) {
+                status = SDL_OutOfMemory();
+            } else {
+                SDL_memcpy(mime_data->mime_type, mime_type, mime_type_length);
+            }
+        }
+    }
+    
+    if (mime_data != NULL && buffer != NULL && length > 0) {
+        if (mime_data->data != NULL) {
+            SDL_free(mime_data->data);
+        }
+        mime_data->data = buffer;
+        mime_data->length = length;
+    }
+
+    return status;
+}
+
+static void
+mime_data_list_free(struct wl_list *list)
+{
+    SDL_MimeDataList *mime_data = NULL; 
+    SDL_MimeDataList *next = NULL;
+
+    wl_list_for_each_safe(mime_data, next, list, link) {
+        if (mime_data->data != NULL) {
+            SDL_free(mime_data->data);
+        }        
+        if (mime_data->mime_type != NULL) {
+            SDL_free(mime_data->mime_type);
+        }
+        SDL_free(mime_data);       
+    } 
+}
+
+ssize_t 
+Wayland_data_source_send(SDL_WaylandDataSource *source,  
+                         const char *mime_type, int fd)
+{
+    size_t written_bytes = 0;
+    ssize_t status = 0;
+    SDL_MimeDataList *mime_data = NULL;
+ 
+    mime_type = Wayland_convert_mime_type(mime_type);
+    mime_data = mime_data_list_find(&source->mimes,
+                                                      mime_type);
+
+    if (mime_data == NULL || mime_data->data == NULL) {
+        status = SDL_SetError("Invalid mime type");
+        close(fd);
+    } else {
+        while (write_pipe(fd, mime_data->data, mime_data->length,
+                          &written_bytes) > 0);
+        close(fd);
+        status = written_bytes;
+    }
+    return status;
+}
+
+int Wayland_data_source_add_data(SDL_WaylandDataSource *source,
+                                 const char *mime_type,
+                                 const void *buffer,
+                                 size_t length) 
+{
+    int status = 0;
+    if (length > 0) {
+        void *internal_buffer = SDL_malloc(length);
+        if (internal_buffer == NULL) {
+            status = SDL_OutOfMemory();
+        } else {
+            SDL_memcpy(internal_buffer, buffer, length);
+            status = mime_data_list_add(&source->mimes, mime_type, 
+                                        internal_buffer, length);
+        }
+    }
+    return status;
+}
+
+SDL_bool 
+Wayland_data_source_has_mime(SDL_WaylandDataSource *source,
+                             const char *mime_type)
+{
+    SDL_bool found = SDL_FALSE;
+
+    if (source != NULL) {
+        found = mime_data_list_find(&source->mimes, mime_type) != NULL;
+    }
+    return found;
+}
+
+void* 
+Wayland_data_source_get_data(SDL_WaylandDataSource *source,
+                             size_t *length, const char* mime_type,
+                             SDL_bool null_terminate)
+{
+    SDL_MimeDataList *mime_data = NULL;
+    void *buffer = NULL;
+    *length = 0;
+
+    if (source == NULL) {
+        SDL_SetError("Invalid data source");
+    } else {
+        mime_data = mime_data_list_find(&source->mimes, mime_type);
+        if (mime_data != NULL && mime_data->length > 0) {
+            buffer = SDL_malloc(mime_data->length);
+            if (buffer == NULL) {
+                *length = SDL_OutOfMemory();
+            } else {
+                *length = mime_data->length;
+                SDL_memcpy(buffer, mime_data->data, mime_data->length);
+            }
+       }
+    }
+
+    return buffer;
+}
+
+void
+Wayland_data_source_destroy(SDL_WaylandDataSource *source)
+{
+    if (source != NULL) {
+        wl_data_source_destroy(source->source);
+        mime_data_list_free(&source->mimes);
+        SDL_free(source);
+    }
+}
+
+void* 
+Wayland_data_offer_receive(SDL_WaylandDataOffer *offer,
+                           size_t *length, const char* mime_type,
+                           SDL_bool null_terminate)
+{
+    SDL_WaylandDataDevice *data_device = NULL;
+ 
+    int pipefd[2];
+    void *buffer = NULL;
+    *length = 0;
+
+    if (offer == NULL) {
+        SDL_SetError("Invalid data offer");
+    } else if ((data_device = offer->data_device) == NULL) {
+        SDL_SetError("Data device not initialized");
+    } else if (pipe2(pipefd, O_CLOEXEC|O_NONBLOCK) == -1) {
+        SDL_SetError("Could not read pipe");
+    } else {
+        wl_data_offer_receive(offer->offer, mime_type, pipefd[1]);
+
+        /* TODO: Needs pump and flush? */
+        WAYLAND_wl_display_flush(data_device->video_data->display);
+
+        close(pipefd[1]);
+        
+        while (read_pipe(pipefd[0], &buffer, length, null_terminate) > 0);
+        close(pipefd[0]);
+    }
+    return buffer;
+}
+
+int 
+Wayland_data_offer_add_mime(SDL_WaylandDataOffer *offer,
+                            const char* mime_type)
+{
+    return mime_data_list_add(&offer->mimes, mime_type, NULL, 0);
+}
+
+
+SDL_bool 
+Wayland_data_offer_has_mime(SDL_WaylandDataOffer *offer,
+                            const char *mime_type)
+{
+    SDL_bool found = SDL_FALSE;
+
+    if (offer != NULL) {
+        found = mime_data_list_find(&offer->mimes, mime_type) != NULL;
+    }
+    return found;
+}
+
+void
+Wayland_data_offer_destroy(SDL_WaylandDataOffer *offer)
+{
+    if (offer != NULL) {
+        wl_data_offer_destroy(offer->offer);
+        mime_data_list_free(&offer->mimes);
+        SDL_free(offer);
+    }
+}
+
+int
+Wayland_data_device_clear_selection(SDL_WaylandDataDevice *data_device)
+{
+    int status = 0;
+
+    if (data_device == NULL || data_device->data_device == NULL) {
+        status = SDL_SetError("Invalid Data Device");
+    } else if (data_device->selection_source != 0) {
+        wl_data_device_set_selection(data_device->data_device, NULL, 0);
+        data_device->selection_source = NULL;
+    }
+    return status;
+}
+
+int
+Wayland_data_device_set_selection(SDL_WaylandDataDevice *data_device,
+                                  SDL_WaylandDataSource *source)
+{
+    int status = 0;
+    size_t num_offers = 0;
+    size_t index = 0;
+
+    if (data_device == NULL) {
+        status = SDL_SetError("Invalid Data Device");
+    } else if (source == NULL) {
+        status = SDL_SetError("Invalid source");
+    } else {
+        SDL_MimeDataList *mime_data = NULL;
+
+        wl_list_for_each(mime_data, &(source->mimes), link) {
+            wl_data_source_offer(source->source,
+                                 mime_data->mime_type); 
+
+            /* TODO - Improve system for multiple mime types to same data */
+            for (index = 0; index < MIME_LIST_SIZE; ++index) {
+                if (strcmp(mime_conversion_list[index][1], mime_data->mime_type) == 0) {
+                    wl_data_source_offer(source->source,
+                                         mime_conversion_list[index][0]);
+               }
+            }
+            /* */
+ 
+            ++num_offers;
+        } 
+
+        if (num_offers == 0) {
+            Wayland_data_device_clear_selection(data_device);
+            status = SDL_SetError("No mime data");
+        } else {
+            /* Only set if there is a valid serial if not set it later */
+            if (data_device->selection_serial != 0) {
+                wl_data_device_set_selection(data_device->data_device,
+                                             source->source,
+                                             data_device->selection_serial); 
+            }
+            data_device->selection_source = source;
+        }
+    }
+
+    return status;
+}
+
+int
+Wayland_data_device_set_serial(SDL_WaylandDataDevice *data_device,
+                               uint32_t serial)
+{
+    int status = -1;
+    if (data_device != NULL) {
+        status = 0;
+
+        /* If there was no serial and there is a pending selection set it now. */
+        if (data_device->selection_serial == 0
+            && data_device->selection_source != NULL) {
+            wl_data_device_set_selection(data_device->data_device,
+                                         data_device->selection_source->source,
+                                         serial); 
+        }
+
+        data_device->selection_serial = serial;
+    }
+
+    return status; 
+}
+
+#endif /* SDL_VIDEO_DRIVER_WAYLAND */
+
+/* vi: set ts=4 sw=4 expandtab: */
diff --git a/source/3rd-party/SDL2/src/video/wayland/SDL_waylanddatamanager.h b/source/3rd-party/SDL2/src/video/wayland/SDL_waylanddatamanager.h
new file mode 100644
index 0000000..9b13e64
--- /dev/null
+++ b/source/3rd-party/SDL2/src/video/wayland/SDL_waylanddatamanager.h
@@ -0,0 +1,103 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+#include "../../SDL_internal.h"
+
+#ifndef SDL_waylanddatamanager_h_
+#define SDL_waylanddatamanager_h_
+
+#include "SDL_waylandvideo.h"
+#include "SDL_waylandwindow.h"
+
+#define TEXT_MIME "text/plain;charset=utf-8"
+#define FILE_MIME "text/uri-list"
+
+typedef struct {
+    char *mime_type;
+    void *data;
+    size_t length;
+    struct wl_list link;
+} SDL_MimeDataList;
+
+typedef struct {
+    struct wl_data_source *source;
+    struct wl_list mimes;
+} SDL_WaylandDataSource;
+
+typedef struct {
+    struct wl_data_offer *offer;
+    struct wl_list mimes;
+    void *data_device;
+} SDL_WaylandDataOffer;
+
+typedef struct {
+    struct wl_data_device *data_device;
+    SDL_VideoData *video_data;
+
+    /* Drag and Drop */
+    uint32_t drag_serial;
+    SDL_WaylandDataOffer *drag_offer;
+    SDL_WaylandDataOffer *selection_offer;
+
+    /* Clipboard */
+    uint32_t selection_serial;
+    SDL_WaylandDataSource *selection_source;
+} SDL_WaylandDataDevice;
+
+extern const char* Wayland_convert_mime_type(const char *mime_type);
+
+/* Wayland Data Source - (Sending) */
+extern SDL_WaylandDataSource* Wayland_data_source_create(_THIS);
+extern ssize_t Wayland_data_source_send(SDL_WaylandDataSource *source, 
+                                        const char *mime_type, int fd);
+extern int Wayland_data_source_add_data(SDL_WaylandDataSource *source,
+                                        const char *mime_type, 
+                                        const void *buffer, 
+                                        size_t length);
+extern SDL_bool Wayland_data_source_has_mime(SDL_WaylandDataSource *source,
+                                             const char *mime_type);
+extern void* Wayland_data_source_get_data(SDL_WaylandDataSource *source,
+                                          size_t *length,
+                                          const char *mime_type,
+                                          SDL_bool null_terminate);
+extern void Wayland_data_source_destroy(SDL_WaylandDataSource *source);
+
+/* Wayland Data Offer - (Receiving) */
+extern void* Wayland_data_offer_receive(SDL_WaylandDataOffer *offer,
+                                        size_t *length,
+                                        const char *mime_type,
+                                        SDL_bool null_terminate);
+extern SDL_bool Wayland_data_offer_has_mime(SDL_WaylandDataOffer *offer,
+                                            const char *mime_type);
+extern int Wayland_data_offer_add_mime(SDL_WaylandDataOffer *offer,
+                                       const char *mime_type);
+extern void Wayland_data_offer_destroy(SDL_WaylandDataOffer *offer);
+
+/* Clipboard */
+extern int Wayland_data_device_clear_selection(SDL_WaylandDataDevice *device);
+extern int Wayland_data_device_set_selection(SDL_WaylandDataDevice *device,
+                                             SDL_WaylandDataSource *source);
+extern int Wayland_data_device_set_serial(SDL_WaylandDataDevice *device,
+                                          uint32_t serial);
+#endif /* SDL_waylanddatamanager_h_ */
+
+/* vi: set ts=4 sw=4 expandtab: */
+
diff --git a/source/3rd-party/SDL2/src/video/wayland/SDL_waylanddyn.c b/source/3rd-party/SDL2/src/video/wayland/SDL_waylanddyn.c
new file mode 100644
index 0000000..98cc518
--- /dev/null
+++ b/source/3rd-party/SDL2/src/video/wayland/SDL_waylanddyn.c
@@ -0,0 +1,178 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+#include "../../SDL_internal.h"
+
+#if SDL_VIDEO_DRIVER_WAYLAND
+
+#define DEBUG_DYNAMIC_WAYLAND 0
+
+#include "SDL_waylanddyn.h"
+
+#if DEBUG_DYNAMIC_WAYLAND
+#include "SDL_log.h"
+#endif
+
+#ifdef SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC
+
+#include "SDL_name.h"
+#include "SDL_loadso.h"
+
+typedef struct
+{
+    void *lib;
+    const char *libname;
+} waylanddynlib;
+
+#ifndef SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC
+#define SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC NULL
+#endif
+#ifndef SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_EGL
+#define SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_EGL NULL
+#endif
+#ifndef SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_CURSOR
+#define SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_CURSOR NULL
+#endif
+#ifndef SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_XKBCOMMON
+#define SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_XKBCOMMON NULL
+#endif
+
+static waylanddynlib waylandlibs[] = {
+    {NULL, SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC},
+    {NULL, SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_EGL},
+    {NULL, SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_CURSOR},
+    {NULL, SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC_XKBCOMMON}
+};
+
+static void *
+WAYLAND_GetSym(const char *fnname, int *pHasModule)
+{
+    int i;
+    void *fn = NULL;
+    for (i = 0; i < SDL_TABLESIZE(waylandlibs); i++) {
+        if (waylandlibs[i].lib != NULL) {
+            fn = SDL_LoadFunction(waylandlibs[i].lib, fnname);
+            if (fn != NULL)
+                break;
+        }
+    }
+
+#if DEBUG_DYNAMIC_WAYLAND
+    if (fn != NULL)
+        SDL_Log("WAYLAND: Found '%s' in %s (%p)\n", fnname, waylandlibs[i].libname, fn);
+    else
+        SDL_Log("WAYLAND: Symbol '%s' NOT FOUND!\n", fnname);
+#endif
+
+    if (fn == NULL)
+        *pHasModule = 0;  /* kill this module. */
+
+    return fn;
+}
+
+#endif /* SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC */
+
+/* Define all the function pointers and wrappers... */
+#define SDL_WAYLAND_MODULE(modname) int SDL_WAYLAND_HAVE_##modname = 0;
+#define SDL_WAYLAND_SYM(rc,fn,params) SDL_DYNWAYLANDFN_##fn WAYLAND_##fn = NULL;
+#define SDL_WAYLAND_INTERFACE(iface) const struct wl_interface *WAYLAND_##iface = NULL;
+#include "SDL_waylandsym.h"
+
+static int wayland_load_refcount = 0;
+
+void
+SDL_WAYLAND_UnloadSymbols(void)
+{
+    /* Don't actually unload if more than one module is using the libs... */
+    if (wayland_load_refcount > 0) {
+        if (--wayland_load_refcount == 0) {
+#ifdef SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC            
+            int i;
+#endif
+            
+            /* set all the function pointers to NULL. */
+#define SDL_WAYLAND_MODULE(modname) SDL_WAYLAND_HAVE_##modname = 0;
+#define SDL_WAYLAND_SYM(rc,fn,params) WAYLAND_##fn = NULL;
+#define SDL_WAYLAND_INTERFACE(iface) WAYLAND_##iface = NULL;
+#include "SDL_waylandsym.h"
+
+
+#ifdef SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC
+            for (i = 0; i < SDL_TABLESIZE(waylandlibs); i++) {
+                if (waylandlibs[i].lib != NULL) {
+                    SDL_UnloadObject(waylandlibs[i].lib);
+                    waylandlibs[i].lib = NULL;
+                }
+            }
+#endif
+        }
+    }
+}
+
+/* returns non-zero if all needed symbols were loaded. */
+int
+SDL_WAYLAND_LoadSymbols(void)
+{
+    int rc = 1;                 /* always succeed if not using Dynamic WAYLAND stuff. */
+
+    /* deal with multiple modules (dga, wayland, etc) needing these symbols... */
+    if (wayland_load_refcount++ == 0) {
+#ifdef SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC
+        int i;
+        int *thismod = NULL;
+        for (i = 0; i < SDL_TABLESIZE(waylandlibs); i++) {
+            if (waylandlibs[i].libname != NULL) {
+                waylandlibs[i].lib = SDL_LoadObject(waylandlibs[i].libname);
+            }
+        }
+
+#define SDL_WAYLAND_MODULE(modname) SDL_WAYLAND_HAVE_##modname = 1; /* default yes */
+#include "SDL_waylandsym.h"
+
+#define SDL_WAYLAND_MODULE(modname) thismod = &SDL_WAYLAND_HAVE_##modname;
+#define SDL_WAYLAND_SYM(rc,fn,params) WAYLAND_##fn = (SDL_DYNWAYLANDFN_##fn) WAYLAND_GetSym(#fn,thismod);
+#define SDL_WAYLAND_INTERFACE(iface) WAYLAND_##iface = (struct wl_interface *) WAYLAND_GetSym(#iface,thismod);
+#include "SDL_waylandsym.h"
+
+        if (SDL_WAYLAND_HAVE_WAYLAND_CLIENT) {
+            /* all required symbols loaded. */
+            SDL_ClearError();
+        } else {
+            /* in case something got loaded... */
+            SDL_WAYLAND_UnloadSymbols();
+            rc = 0;
+        }
+
+#else  /* no dynamic WAYLAND */
+
+#define SDL_WAYLAND_MODULE(modname) SDL_WAYLAND_HAVE_##modname = 1; /* default yes */
+#define SDL_WAYLAND_SYM(rc,fn,params) WAYLAND_##fn = fn;
+#define SDL_WAYLAND_INTERFACE(iface) WAYLAND_##iface = &iface;
+#include "SDL_waylandsym.h"
+
+#endif
+    }
+
+    return rc;
+}
+
+#endif /* SDL_VIDEO_DRIVER_WAYLAND */
+
+/* vi: set ts=4 sw=4 expandtab: */
diff --git a/source/3rd-party/SDL2/src/video/wayland/SDL_waylanddyn.h b/source/3rd-party/SDL2/src/video/wayland/SDL_waylanddyn.h
new file mode 100644
index 0000000..720427e
--- /dev/null
+++ b/source/3rd-party/SDL2/src/video/wayland/SDL_waylanddyn.h
@@ -0,0 +1,107 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+#ifndef SDL_waylanddyn_h_
+#define SDL_waylanddyn_h_
+
+#include "../../SDL_internal.h"
+
+/* We can't include wayland-client.h here 
+ * but we need some structs from it
+ */
+struct wl_interface;
+struct wl_proxy;
+struct wl_event_queue;
+struct wl_display;
+struct wl_surface;
+struct wl_shm;
+
+#include <stdint.h>
+#include "wayland-cursor.h"
+#include "wayland-util.h"
+#include "xkbcommon/xkbcommon.h"
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+int SDL_WAYLAND_LoadSymbols(void);
+void SDL_WAYLAND_UnloadSymbols(void);
+
+#define SDL_WAYLAND_MODULE(modname) extern int SDL_WAYLAND_HAVE_##modname;
+#define SDL_WAYLAND_SYM(rc,fn,params) \
+    typedef rc (*SDL_DYNWAYLANDFN_##fn) params; \
+    extern SDL_DYNWAYLANDFN_##fn WAYLAND_##fn;
+#define SDL_WAYLAND_INTERFACE(iface) extern const struct wl_interface *WAYLAND_##iface;
+#include "SDL_waylandsym.h"
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#ifdef SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC
+
+#ifdef _WAYLAND_CLIENT_H
+#error Do not include wayland-client ahead of SDL_waylanddyn.h in dynamic loading mode
+#endif
+
+/* wayland-client-protocol.h included from wayland-client.h
+ * has inline functions that require these to be defined in dynamic loading mode
+ */
+
+#define wl_proxy_create (*WAYLAND_wl_proxy_create)
+#define wl_proxy_destroy (*WAYLAND_wl_proxy_destroy)
+#define wl_proxy_marshal (*WAYLAND_wl_proxy_marshal)
+#define wl_proxy_set_user_data (*WAYLAND_wl_proxy_set_user_data)
+#define wl_proxy_get_user_data (*WAYLAND_wl_proxy_get_user_data)
+#define wl_proxy_add_listener (*WAYLAND_wl_proxy_add_listener)
+#define wl_proxy_marshal_constructor (*WAYLAND_wl_proxy_marshal_constructor)
+#define wl_proxy_marshal_constructor_versioned (*WAYLAND_wl_proxy_marshal_constructor_versioned)
+
+#define wl_seat_interface (*WAYLAND_wl_seat_interface)
+#define wl_surface_interface (*WAYLAND_wl_surface_interface)
+#define wl_shm_pool_interface (*WAYLAND_wl_shm_pool_interface)
+#define wl_buffer_interface (*WAYLAND_wl_buffer_interface)
+#define wl_registry_interface (*WAYLAND_wl_registry_interface)
+#define wl_shell_surface_interface (*WAYLAND_wl_shell_surface_interface)
+#define wl_region_interface (*WAYLAND_wl_region_interface)
+#define wl_pointer_interface (*WAYLAND_wl_pointer_interface)
+#define wl_keyboard_interface (*WAYLAND_wl_keyboard_interface)
+#define wl_compositor_interface (*WAYLAND_wl_compositor_interface)
+#define wl_output_interface (*WAYLAND_wl_output_interface)
+#define wl_shell_interface (*WAYLAND_wl_shell_interface)
+#define wl_shm_interface (*WAYLAND_wl_shm_interface)
+#define wl_data_device_interface (*WAYLAND_wl_data_device_interface)
+#define wl_data_offer_interface (*WAYLAND_wl_data_offer_interface)
+#define wl_data_source_interface (*WAYLAND_wl_data_source_interface)
+#define wl_data_device_manager_interface (*WAYLAND_wl_data_device_manager_interface)
+
+#endif /* SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC */
+
+#include "wayland-client-core.h"
+#include "wayland-client-protocol.h"
+#include "wayland-egl.h"
+
+#endif /* SDL_waylanddyn_h_ */
+
+/* vi: set ts=4 sw=4 expandtab: */
diff --git a/source/3rd-party/SDL2/src/video/wayland/SDL_waylandevents.c b/source/3rd-party/SDL2/src/video/wayland/SDL_waylandevents.c
new file mode 100644
index 0000000..0c953a5
--- /dev/null
+++ b/source/3rd-party/SDL2/src/video/wayland/SDL_waylandevents.c
@@ -0,0 +1,1136 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+#include "../../SDL_internal.h"
+
+#if SDL_VIDEO_DRIVER_WAYLAND
+
+#include "SDL_stdinc.h"
+#include "SDL_assert.h"
+#include "SDL_log.h"
+
+#include "../../core/unix/SDL_poll.h"
+#include "../../events/SDL_sysevents.h"
+#include "../../events/SDL_events_c.h"
+#include "../../events/scancodes_xfree86.h"
+
+#include "SDL_waylandvideo.h"
+#include "SDL_waylandevents_c.h"
+#include "SDL_waylandwindow.h"
+
+#include "SDL_waylanddyn.h"
+
+#include "pointer-constraints-unstable-v1-client-protocol.h"
+#include "relative-pointer-unstable-v1-client-protocol.h"
+#include "xdg-shell-client-protocol.h"
+#include "xdg-shell-unstable-v6-client-protocol.h"
+
+#include <linux/input.h>
+#include <sys/select.h>
+#include <sys/mman.h>
+#include <poll.h>
+#include <unistd.h>
+#include <xkbcommon/xkbcommon.h>
+
+struct SDL_WaylandInput {
+    SDL_VideoData *display;
+    struct wl_seat *seat;
+    struct wl_pointer *pointer;
+    struct wl_touch *touch;
+    struct wl_keyboard *keyboard;
+    SDL_WaylandDataDevice *data_device;
+    struct zwp_relative_pointer_v1 *relative_pointer;
+    SDL_WindowData *pointer_focus;
+    SDL_WindowData *keyboard_focus;
+
+    /* Last motion location */
+    wl_fixed_t sx_w;
+    wl_fixed_t sy_w;
+
+    double dx_frac;
+    double dy_frac;
+
+    struct {
+        struct xkb_keymap *keymap;
+        struct xkb_state *state;
+    } xkb;
+};
+
+struct SDL_WaylandTouchPoint {
+    SDL_TouchID id;
+    float x;
+    float y;
+    struct wl_surface* surface;
+
+    struct SDL_WaylandTouchPoint* prev;
+    struct SDL_WaylandTouchPoint* next;
+};
+
+struct SDL_WaylandTouchPointList {
+    struct SDL_WaylandTouchPoint* head;
+    struct SDL_WaylandTouchPoint* tail;
+};
+
+static struct SDL_WaylandTouchPointList touch_points = {NULL, NULL};
+
+static void
+touch_add(SDL_TouchID id, float x, float y, struct wl_surface *surface)
+{
+    struct SDL_WaylandTouchPoint* tp = SDL_malloc(sizeof(struct SDL_WaylandTouchPoint));
+
+    tp->id = id;
+    tp->x = x;
+    tp->y = y;
+    tp->surface = surface;
+
+    if (touch_points.tail) {
+        touch_points.tail->next = tp;
+        tp->prev = touch_points.tail;
+    } else {
+        touch_points.head = tp;
+        tp->prev = NULL;
+    }
+
+    touch_points.tail = tp;
+    tp->next = NULL;
+}
+
+static void
+touch_update(SDL_TouchID id, float x, float y)
+{
+    struct SDL_WaylandTouchPoint* tp = touch_points.head;
+
+    while (tp) {
+        if (tp->id == id) {
+            tp->x = x;
+            tp->y = y;
+        }
+
+        tp = tp->next;
+    }
+}
+
+static void
+touch_del(SDL_TouchID id, float* x, float* y)
+{
+    struct SDL_WaylandTouchPoint* tp = touch_points.head;
+
+    while (tp) {
+        if (tp->id == id) {
+            *x = tp->x;
+            *y = tp->y;
+
+            if (tp->prev) {
+                tp->prev->next = tp->next;
+            } else {
+                touch_points.head = tp->next;
+            }
+
+            if (tp->next) {
+                tp->next->prev = tp->prev;
+            } else {
+                touch_points.tail = tp->prev;
+            }
+
+            SDL_free(tp);
+        }
+
+        tp = tp->next;
+    }
+}
+
+static struct wl_surface*
+touch_surface(SDL_TouchID id)
+{
+    struct SDL_WaylandTouchPoint* tp = touch_points.head;
+
+    while (tp) {
+        if (tp->id == id) {
+            return tp->surface;
+        }
+
+        tp = tp->next;
+    }
+
+    return NULL;
+}
+
+void
+Wayland_PumpEvents(_THIS)
+{
+    SDL_VideoData *d = _this->driverdata;
+
+    WAYLAND_wl_display_flush(d->display);
+
+    if (SDL_IOReady(WAYLAND_wl_display_get_fd(d->display), SDL_FALSE, 0)) {
+        WAYLAND_wl_display_dispatch(d->display);
+    }
+    else
+    {
+        WAYLAND_wl_display_dispatch_pending(d->display);
+    }
+}
+
+static void
+pointer_handle_enter(void *data, struct wl_pointer *pointer,
+                     uint32_t serial, struct wl_surface *surface,
+                     wl_fixed_t sx_w, wl_fixed_t sy_w)
+{
+    struct SDL_WaylandInput *input = data;
+    SDL_WindowData *window;
+
+    if (!surface) {
+        /* enter event for a window we've just destroyed */
+        return;
+    }
+
+    /* This handler will be called twice in Wayland 1.4
+     * Once for the window surface which has valid user data
+     * and again for the mouse cursor surface which does not have valid user data
+     * We ignore the later
+     */
+
+    window = (SDL_WindowData *)wl_surface_get_user_data(surface);
+
+    if (window) {
+        input->pointer_focus = window;
+        SDL_SetMouseFocus(window->sdlwindow);
+    }
+}
+
+static void
+pointer_handle_leave(void *data, struct wl_pointer *pointer,
+                     uint32_t serial, struct wl_surface *surface)
+{
+    struct SDL_WaylandInput *input = data;
+
+    if (input->pointer_focus) {
+        SDL_SetMouseFocus(NULL);
+        input->pointer_focus = NULL;
+    }
+}
+
+static void
+pointer_handle_motion(void *data, struct wl_pointer *pointer,
+                      uint32_t time, wl_fixed_t sx_w, wl_fixed_t sy_w)
+{
+    struct SDL_WaylandInput *input = data;
+    SDL_WindowData *window = input->pointer_focus;
+    input->sx_w = sx_w;
+    input->sy_w = sy_w;
+    if (input->pointer_focus) {
+        const int sx = wl_fixed_to_int(sx_w);
+        const int sy = wl_fixed_to_int(sy_w);
+        SDL_SendMouseMotion(window->sdlwindow, 0, 0, sx, sy);
+    }
+}
+
+static SDL_bool
+ProcessHitTest(struct SDL_WaylandInput *input, uint32_t serial)
+{
+    SDL_WindowData *window_data = input->pointer_focus;
+    SDL_Window *window = window_data->sdlwindow;
+
+    if (window->hit_test) {
+        const SDL_Point point = { wl_fixed_to_int(input->sx_w), wl_fixed_to_int(input->sy_w) };
+        const SDL_HitTestResult rc = window->hit_test(window, &point, window->hit_test_data);
+
+        static const uint32_t directions_wl[] = {
+            WL_SHELL_SURFACE_RESIZE_TOP_LEFT, WL_SHELL_SURFACE_RESIZE_TOP,
+            WL_SHELL_SURFACE_RESIZE_TOP_RIGHT, WL_SHELL_SURFACE_RESIZE_RIGHT,
+            WL_SHELL_SURFACE_RESIZE_BOTTOM_RIGHT, WL_SHELL_SURFACE_RESIZE_BOTTOM,
+            WL_SHELL_SURFACE_RESIZE_BOTTOM_LEFT, WL_SHELL_SURFACE_RESIZE_LEFT
+        };
+
+        /* the names are different (ZXDG_TOPLEVEL_V6_RESIZE_EDGE_* vs
+           WL_SHELL_SURFACE_RESIZE_*), but the values are the same. */
+        const uint32_t *directions_zxdg = directions_wl;
+
+        switch (rc) {
+            case SDL_HITTEST_DRAGGABLE:
+                if (input->display->shell.xdg) {
+                    xdg_toplevel_move(window_data->shell_surface.xdg.roleobj.toplevel, input->seat, serial);
+                } else if (input->display->shell.zxdg) {
+                    zxdg_toplevel_v6_move(window_data->shell_surface.zxdg.roleobj.toplevel, input->seat, serial);
+                } else {
+                    wl_shell_surface_move(window_data->shell_surface.wl, input->seat, serial);
+                }
+                return SDL_TRUE;
+
+            case SDL_HITTEST_RESIZE_TOPLEFT:
+            case SDL_HITTEST_RESIZE_TOP:
+            case SDL_HITTEST_RESIZE_TOPRIGHT:
+            case SDL_HITTEST_RESIZE_RIGHT:
+            case SDL_HITTEST_RESIZE_BOTTOMRIGHT:
+            case SDL_HITTEST_RESIZE_BOTTOM:
+            case SDL_HITTEST_RESIZE_BOTTOMLEFT:
+            case SDL_HITTEST_RESIZE_LEFT:
+                if (input->display->shell.xdg) {
+                    xdg_toplevel_resize(window_data->shell_surface.xdg.roleobj.toplevel, input->seat, serial, directions_zxdg[rc - SDL_HITTEST_RESIZE_TOPLEFT]);
+                } else if (input->display->shell.zxdg) {
+                    zxdg_toplevel_v6_resize(window_data->shell_surface.zxdg.roleobj.toplevel, input->seat, serial, directions_zxdg[rc - SDL_HITTEST_RESIZE_TOPLEFT]);
+                } else {
+                    wl_shell_surface_resize(window_data->shell_surface.wl, input->seat, serial, directions_wl[rc - SDL_HITTEST_RESIZE_TOPLEFT]);
+                }
+                return SDL_TRUE;
+
+            default: return SDL_FALSE;
+        }
+    }
+
+    return SDL_FALSE;
+}
+
+static void
+pointer_handle_button_common(struct SDL_WaylandInput *input, uint32_t serial,
+                             uint32_t time, uint32_t button, uint32_t state_w)
+{
+    SDL_WindowData *window = input->pointer_focus;
+    enum wl_pointer_button_state state = state_w;
+    uint32_t sdl_button;
+
+    if  (input->pointer_focus) {
+        switch (button) {
+            case BTN_LEFT:
+                sdl_button = SDL_BUTTON_LEFT;
+                if (ProcessHitTest(input, serial)) {
+                    return;  /* don't pass this event on to app. */
+                }
+                break;
+            case BTN_MIDDLE:
+                sdl_button = SDL_BUTTON_MIDDLE;
+                break;
+            case BTN_RIGHT:
+                sdl_button = SDL_BUTTON_RIGHT;
+                break;
+            case BTN_SIDE:
+                sdl_button = SDL_BUTTON_X1;
+                break;
+            case BTN_EXTRA:
+                sdl_button = SDL_BUTTON_X2;
+                break;
+            default:
+                return;
+        }
+            
+        Wayland_data_device_set_serial(input->data_device, serial); 
+
+        SDL_SendMouseButton(window->sdlwindow, 0,
+                            state ? SDL_PRESSED : SDL_RELEASED, sdl_button);
+    }
+}
+
+static void
+pointer_handle_button(void *data, struct wl_pointer *pointer, uint32_t serial,
+                      uint32_t time, uint32_t button, uint32_t state_w)
+{
+    struct SDL_WaylandInput *input = data;
+
+    pointer_handle_button_common(input, serial, time, button, state_w);
+}
+
+static void
+pointer_handle_axis_common(struct SDL_WaylandInput *input,
+                           uint32_t time, uint32_t axis, wl_fixed_t value)
+{
+    SDL_WindowData *window = input->pointer_focus;
+    enum wl_pointer_axis a = axis;
+    float x, y;
+
+    if (input->pointer_focus) {
+        switch (a) {
+            case WL_POINTER_AXIS_VERTICAL_SCROLL:
+                x = 0;
+                y = 0 - (float)wl_fixed_to_double(value);
+                break;
+            case WL_POINTER_AXIS_HORIZONTAL_SCROLL:
+                x = 0 - (float)wl_fixed_to_double(value);
+                y = 0;
+                break;
+            default:
+                return;
+        }
+
+        SDL_SendMouseWheel(window->sdlwindow, 0, x, y, SDL_MOUSEWHEEL_NORMAL);
+    }
+}
+
+static void
+pointer_handle_axis(void *data, struct wl_pointer *pointer,
+                    uint32_t time, uint32_t axis, wl_fixed_t value)
+{
+    struct SDL_WaylandInput *input = data;
+
+    pointer_handle_axis_common(input, time, axis, value);
+}
+
+static const struct wl_pointer_listener pointer_listener = {
+    pointer_handle_enter,
+    pointer_handle_leave,
+    pointer_handle_motion,
+    pointer_handle_button,
+    pointer_handle_axis,
+    NULL, /* frame */
+    NULL, /* axis_source */
+    NULL, /* axis_stop */
+    NULL, /* axis_discrete */
+};
+
+static void
+touch_handler_down(void *data, struct wl_touch *touch, unsigned int serial,
+                   unsigned int timestamp, struct wl_surface *surface,
+                   int id, wl_fixed_t fx, wl_fixed_t fy)
+{
+    float x, y;
+    SDL_WindowData* window;
+
+    window = (SDL_WindowData *)wl_surface_get_user_data(surface);
+
+    x = wl_fixed_to_double(fx) / window->sdlwindow->w;
+    y = wl_fixed_to_double(fy) / window->sdlwindow->h;
+
+    touch_add(id, x, y, surface);
+    SDL_SendTouch(1, (SDL_FingerID)id, SDL_TRUE, x, y, 1.0f);
+}
+
+static void
+touch_handler_up(void *data, struct wl_touch *touch, unsigned int serial,
+                 unsigned int timestamp, int id)
+{
+    float x = 0, y = 0;
+
+    touch_del(id, &x, &y);
+    SDL_SendTouch(1, (SDL_FingerID)id, SDL_FALSE, x, y, 0.0f);
+}
+
+static void
+touch_handler_motion(void *data, struct wl_touch *touch, unsigned int timestamp,
+                     int id, wl_fixed_t fx, wl_fixed_t fy)
+{
+    float x, y;
+    SDL_WindowData* window;
+
+    window = (SDL_WindowData *)wl_surface_get_user_data(touch_surface(id));
+
+    x = wl_fixed_to_double(fx) / window->sdlwindow->w;
+    y = wl_fixed_to_double(fy) / window->sdlwindow->h;
+
+    touch_update(id, x, y);
+    SDL_SendTouchMotion(1, (SDL_FingerID)id, x, y, 1.0f);
+}
+
+static void
+touch_handler_frame(void *data, struct wl_touch *touch)
+{
+
+}
+
+static void
+touch_handler_cancel(void *data, struct wl_touch *touch)
+{
+
+}
+
+static const struct wl_touch_listener touch_listener = {
+    touch_handler_down,
+    touch_handler_up,
+    touch_handler_motion,
+    touch_handler_frame,
+    touch_handler_cancel,
+    NULL, /* shape */
+    NULL, /* orientation */
+};
+
+static void
+keyboard_handle_keymap(void *data, struct wl_keyboard *keyboard,
+                       uint32_t format, int fd, uint32_t size)
+{
+    struct SDL_WaylandInput *input = data;
+    char *map_str;
+
+    if (!data) {
+        close(fd);
+        return;
+    }
+
+    if (format != WL_KEYBOARD_KEYMAP_FORMAT_XKB_V1) {
+        close(fd);
+        return;
+    }
+
+    map_str = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0);
+    if (map_str == MAP_FAILED) {
+        close(fd);
+        return;
+    }
+
+    input->xkb.keymap = WAYLAND_xkb_keymap_new_from_string(input->display->xkb_context,
+                                                map_str,
+                                                XKB_KEYMAP_FORMAT_TEXT_V1,
+                                                0);
+    munmap(map_str, size);
+    close(fd);
+
+    if (!input->xkb.keymap) {
+        fprintf(stderr, "failed to compile keymap\n");
+        return;
+    }
+
+    input->xkb.state = WAYLAND_xkb_state_new(input->xkb.keymap);
+    if (!input->xkb.state) {
+        fprintf(stderr, "failed to create XKB state\n");
+        WAYLAND_xkb_keymap_unref(input->xkb.keymap);
+        input->xkb.keymap = NULL;
+        return;
+    }
+}
+
+static void
+keyboard_handle_enter(void *data, struct wl_keyboard *keyboard,
+                      uint32_t serial, struct wl_surface *surface,
+                      struct wl_array *keys)
+{
+    struct SDL_WaylandInput *input = data;
+    SDL_WindowData *window;
+
+    if (!surface) {
+        /* enter event for a window we've just destroyed */
+        return;
+    }
+
+    window = wl_surface_get_user_data(surface);
+
+    if (window) {
+        input->keyboard_focus = window;
+        window->keyboard_device = input;
+        SDL_SetKeyboardFocus(window->sdlwindow);
+    }
+}
+
+static void
+keyboard_handle_leave(void *data, struct wl_keyboard *keyboard,
+                      uint32_t serial, struct wl_surface *surface)
+{
+    SDL_SetKeyboardFocus(NULL);
+}
+
+static void
+keyboard_handle_key(void *data, struct wl_keyboard *keyboard,
+                    uint32_t serial, uint32_t time, uint32_t key,
+                    uint32_t state_w)
+{
+    struct SDL_WaylandInput *input = data;
+    SDL_WindowData *window = input->keyboard_focus;
+    enum wl_keyboard_key_state state = state_w;
+    const xkb_keysym_t *syms;
+    uint32_t scancode;
+    char text[8];
+    int size;
+
+    if (key < SDL_arraysize(xfree86_scancode_table2)) {
+        scancode = xfree86_scancode_table2[key];
+
+        // TODO when do we get WL_KEYBOARD_KEY_STATE_REPEAT?
+        if (scancode != SDL_SCANCODE_UNKNOWN)
+            SDL_SendKeyboardKey(state == WL_KEYBOARD_KEY_STATE_PRESSED ?
+                                SDL_PRESSED : SDL_RELEASED, scancode);
+    }
+
+    if (!window || window->keyboard_device != input || !input->xkb.state)
+        return;
+
+    // TODO can this happen?
+    if (WAYLAND_xkb_state_key_get_syms(input->xkb.state, key + 8, &syms) != 1)
+        return;
+
+    if (state) {
+        size = WAYLAND_xkb_keysym_to_utf8(syms[0], text, sizeof text);
+
+        if (size > 0) {
+            text[size] = 0;
+
+            Wayland_data_device_set_serial(input->data_device, serial);
+
+            SDL_SendKeyboardText(text);
+        }
+    }
+}
+
+static void
+keyboard_handle_modifiers(void *data, struct wl_keyboard *keyboard,
+                          uint32_t serial, uint32_t mods_depressed,
+                          uint32_t mods_latched, uint32_t mods_locked,
+                          uint32_t group)
+{
+    struct SDL_WaylandInput *input = data;
+
+    WAYLAND_xkb_state_update_mask(input->xkb.state, mods_depressed, mods_latched,
+                          mods_locked, 0, 0, group);
+}
+
+static const struct wl_keyboard_listener keyboard_listener = {
+    keyboard_handle_keymap,
+    keyboard_handle_enter,
+    keyboard_handle_leave,
+    keyboard_handle_key,
+    keyboard_handle_modifiers,
+    NULL, /* repeat_info */
+};
+
+static void
+seat_handle_capabilities(void *data, struct wl_seat *seat,
+                         enum wl_seat_capability caps)
+{
+    struct SDL_WaylandInput *input = data;
+
+    if ((caps & WL_SEAT_CAPABILITY_POINTER) && !input->pointer) {
+        input->pointer = wl_seat_get_pointer(seat);
+        input->display->pointer = input->pointer;
+        wl_pointer_set_user_data(input->pointer, input);
+        wl_pointer_add_listener(input->pointer, &pointer_listener,
+                                input);
+    } else if (!(caps & WL_SEAT_CAPABILITY_POINTER) && input->pointer) {
+        wl_pointer_destroy(input->pointer);
+        input->pointer = NULL;
+        input->display->pointer = NULL;
+    }
+
+    if ((caps & WL_SEAT_CAPABILITY_TOUCH) && !input->touch) {
+        SDL_AddTouch(1, "wayland_touch");
+        input->touch = wl_seat_get_touch(seat);
+        wl_touch_set_user_data(input->touch, input);
+        wl_touch_add_listener(input->touch, &touch_listener,
+                                 input);
+    } else if (!(caps & WL_SEAT_CAPABILITY_TOUCH) && input->touch) {
+        SDL_DelTouch(1);
+        wl_touch_destroy(input->touch);
+        input->touch = NULL;
+    }
+
+    if ((caps & WL_SEAT_CAPABILITY_KEYBOARD) && !input->keyboard) {
+        input->keyboard = wl_seat_get_keyboard(seat);
+        wl_keyboard_set_user_data(input->keyboard, input);
+        wl_keyboard_add_listener(input->keyboard, &keyboard_listener,
+                                 input);
+    } else if (!(caps & WL_SEAT_CAPABILITY_KEYBOARD) && input->keyboard) {
+        wl_keyboard_destroy(input->keyboard);
+        input->keyboard = NULL;
+    }
+}
+
+static const struct wl_seat_listener seat_listener = {
+    seat_handle_capabilities,
+    NULL, /* name */
+};
+
+static void
+data_source_handle_target(void *data, struct wl_data_source *wl_data_source,
+                          const char *mime_type)
+{
+}
+
+static void
+data_source_handle_send(void *data, struct wl_data_source *wl_data_source,
+                        const char *mime_type, int32_t fd)
+{
+    Wayland_data_source_send((SDL_WaylandDataSource *)data, mime_type, fd);
+}
+                       
+static void
+data_source_handle_cancelled(void *data, struct wl_data_source *wl_data_source)
+{
+    Wayland_data_source_destroy(data);
+}
+                       
+static void
+data_source_handle_dnd_drop_performed(void *data, struct wl_data_source *wl_data_source)
+{
+}
+
+static void
+data_source_handle_dnd_finished(void *data, struct wl_data_source *wl_data_source)
+{
+}
+
+static void
+data_source_handle_action(void *data, struct wl_data_source *wl_data_source,
+                          uint32_t dnd_action)
+{
+}
+
+static const struct wl_data_source_listener data_source_listener = {
+    data_source_handle_target,
+    data_source_handle_send,
+    data_source_handle_cancelled,
+    data_source_handle_dnd_drop_performed, // Version 3
+    data_source_handle_dnd_finished,       // Version 3
+    data_source_handle_action,             // Version 3
+};
+
+SDL_WaylandDataSource*
+Wayland_data_source_create(_THIS)
+{
+    SDL_WaylandDataSource *data_source = NULL;
+    SDL_VideoData *driver_data = NULL;
+    struct wl_data_source *id = NULL;
+
+    if (_this == NULL || _this->driverdata == NULL) {
+        SDL_SetError("Video driver uninitialized");
+    } else {
+        driver_data = _this->driverdata;
+
+        if (driver_data->data_device_manager != NULL) {
+            id = wl_data_device_manager_create_data_source(
+                     driver_data->data_device_manager);
+        }
+
+        if (id == NULL) { 
+            SDL_SetError("Wayland unable to create data source");
+        } else {
+            data_source = SDL_calloc(1, sizeof *data_source);
+            if (data_source == NULL) {
+                SDL_OutOfMemory();
+                wl_data_source_destroy(id);
+            } else {
+                WAYLAND_wl_list_init(&(data_source->mimes));
+                data_source->source = id;
+                wl_data_source_set_user_data(id, data_source);
+                wl_data_source_add_listener(id, &data_source_listener,
+                                            data_source);
+            }
+        }
+    }
+    return data_source;
+}
+
+static void
+data_offer_handle_offer(void *data, struct wl_data_offer *wl_data_offer,
+                        const char *mime_type)
+{
+    SDL_WaylandDataOffer *offer = data;
+    Wayland_data_offer_add_mime(offer, mime_type);
+}
+
+static void
+data_offer_handle_source_actions(void *data, struct wl_data_offer *wl_data_offer,
+                                 uint32_t source_actions)
+{
+}
+
+static void
+data_offer_handle_actions(void *data, struct wl_data_offer *wl_data_offer,
+                          uint32_t dnd_action)
+{
+}
+
+static const struct wl_data_offer_listener data_offer_listener = {
+    data_offer_handle_offer,
+    data_offer_handle_source_actions, // Version 3
+    data_offer_handle_actions,        // Version 3
+};
+
+static void
+data_device_handle_data_offer(void *data, struct wl_data_device *wl_data_device,
+                              struct wl_data_offer *id)
+{
+    SDL_WaylandDataOffer *data_offer = NULL;
+
+    data_offer = SDL_calloc(1, sizeof *data_offer);
+    if (data_offer == NULL) {
+        SDL_OutOfMemory();
+    } else {
+        data_offer->offer = id;
+        data_offer->data_device = data;
+        WAYLAND_wl_list_init(&(data_offer->mimes));
+        wl_data_offer_set_user_data(id, data_offer);
+        wl_data_offer_add_listener(id, &data_offer_listener, data_offer);
+    }
+}
+
+static void
+data_device_handle_enter(void *data, struct wl_data_device *wl_data_device,
+                         uint32_t serial, struct wl_surface *surface,
+                         wl_fixed_t x, wl_fixed_t y, struct wl_data_offer *id)
+{
+    SDL_WaylandDataDevice *data_device = data;
+    SDL_bool has_mime = SDL_FALSE;
+    uint32_t dnd_action = WL_DATA_DEVICE_MANAGER_DND_ACTION_NONE; 
+        
+    data_device->drag_serial = serial;
+
+    if (id != NULL) {
+        data_device->drag_offer = wl_data_offer_get_user_data(id);
+
+        /* TODO: SDL Support more mime types */
+        has_mime = Wayland_data_offer_has_mime(
+            data_device->drag_offer, FILE_MIME);
+
+        /* If drag_mime is NULL this will decline the offer */
+        wl_data_offer_accept(id, serial,
+                             (has_mime == SDL_TRUE) ? FILE_MIME : NULL);
+
+        /* SDL only supports "copy" style drag and drop */
+        if (has_mime == SDL_TRUE) {
+            dnd_action = WL_DATA_DEVICE_MANAGER_DND_ACTION_COPY;
+        }
+        wl_data_offer_set_actions(data_device->drag_offer->offer,
+                                  dnd_action, dnd_action);
+    }
+}
+
+static void
+data_device_handle_leave(void *data, struct wl_data_device *wl_data_device)
+{
+    SDL_WaylandDataDevice *data_device = data;
+    SDL_WaylandDataOffer *offer = NULL;
+
+    if (data_device->selection_offer != NULL) {
+        data_device->selection_offer = NULL;
+        Wayland_data_offer_destroy(offer);
+    }
+}
+
+static void
+data_device_handle_motion(void *data, struct wl_data_device *wl_data_device,
+                          uint32_t time, wl_fixed_t x, wl_fixed_t y)
+{
+}
+
+static void
+data_device_handle_drop(void *data, struct wl_data_device *wl_data_device)
+{
+    SDL_WaylandDataDevice *data_device = data;
+    void *buffer = NULL;
+    size_t length = 0;
+
+    const char *current_uri = NULL;
+    const char *last_char = NULL;
+    char *current_char = NULL;
+    
+    if (data_device->drag_offer != NULL) {
+        /* TODO: SDL Support more mime types */
+        buffer = Wayland_data_offer_receive(data_device->drag_offer,
+                                            &length, FILE_MIME, SDL_FALSE);
+
+        /* uri-list */
+        current_uri = (const char *)buffer;
+        last_char = (const char *)buffer + length;
+        for (current_char = buffer; current_char < last_char; ++current_char) {
+            if (*current_char == '\n' || *current_char == 0) {
+                if (*current_uri != 0 && *current_uri != '#') {
+                    *current_char = 0;
+                    SDL_SendDropFile(NULL, current_uri);
+                }
+                current_uri = (const char *)current_char + 1;
+            }
+        }
+
+        SDL_free(buffer);
+    }
+}
+
+static void
+data_device_handle_selection(void *data, struct wl_data_device *wl_data_device,
+                             struct wl_data_offer *id)
+{    
+    SDL_WaylandDataDevice *data_device = data;
+    SDL_WaylandDataOffer *offer = NULL;
+
+    if (id != NULL) {
+        offer = wl_data_offer_get_user_data(id);
+    }
+
+    if (data_device->selection_offer != offer) {
+        Wayland_data_offer_destroy(data_device->selection_offer);
+        data_device->selection_offer = offer;
+    }
+
+    SDL_SendClipboardUpdate();
+}
+
+static const struct wl_data_device_listener data_device_listener = {
+    data_device_handle_data_offer,
+    data_device_handle_enter,
+    data_device_handle_leave,
+    data_device_handle_motion,
+    data_device_handle_drop,
+    data_device_handle_selection
+};
+
+void
+Wayland_display_add_input(SDL_VideoData *d, uint32_t id)
+{
+    struct SDL_WaylandInput *input;
+    SDL_WaylandDataDevice *data_device = NULL;
+
+    input = SDL_calloc(1, sizeof *input);
+    if (input == NULL)
+        return;
+
+    input->display = d;
+    input->seat = wl_registry_bind(d->registry, id, &wl_seat_interface, 1);
+    input->sx_w = wl_fixed_from_int(0);
+    input->sy_w = wl_fixed_from_int(0);
+    d->input = input;
+    
+    if (d->data_device_manager != NULL) {
+        data_device = SDL_calloc(1, sizeof *data_device);
+        if (data_device == NULL) {
+            return;
+        }
+
+        data_device->data_device = wl_data_device_manager_get_data_device(
+            d->data_device_manager, input->seat
+        );
+        data_device->video_data = d;
+
+        if (data_device->data_device == NULL) {
+            SDL_free(data_device);
+        } else {
+            wl_data_device_set_user_data(data_device->data_device, data_device);
+            wl_data_device_add_listener(data_device->data_device,
+                                        &data_device_listener, data_device);
+            input->data_device = data_device;
+        }
+    }
+
+    wl_seat_add_listener(input->seat, &seat_listener, input);
+    wl_seat_set_user_data(input->seat, input);
+
+    WAYLAND_wl_display_flush(d->display);
+}
+
+void Wayland_display_destroy_input(SDL_VideoData *d)
+{
+    struct SDL_WaylandInput *input = d->input;
+
+    if (!input)
+        return;
+
+    if (input->data_device != NULL) {
+        Wayland_data_device_clear_selection(input->data_device);
+        if (input->data_device->selection_offer != NULL) {
+            Wayland_data_offer_destroy(input->data_device->selection_offer);
+        }
+        if (input->data_device->drag_offer != NULL) {
+            Wayland_data_offer_destroy(input->data_device->drag_offer);
+        }
+        if (input->data_device->data_device != NULL) {
+            wl_data_device_release(input->data_device->data_device);
+        }
+        SDL_free(input->data_device);
+    }
+
+    if (input->keyboard)
+        wl_keyboard_destroy(input->keyboard);
+
+    if (input->pointer)
+        wl_pointer_destroy(input->pointer);
+
+    if (input->touch) {
+        SDL_DelTouch(1);
+        wl_touch_destroy(input->touch);
+    }
+
+    if (input->seat)
+        wl_seat_destroy(input->seat);
+
+    if (input->xkb.state)
+        WAYLAND_xkb_state_unref(input->xkb.state);
+
+    if (input->xkb.keymap)
+        WAYLAND_xkb_keymap_unref(input->xkb.keymap);
+
+    SDL_free(input);
+    d->input = NULL;
+}
+
+SDL_WaylandDataDevice* Wayland_get_data_device(struct SDL_WaylandInput *input)
+{
+    if (input == NULL) {
+        return NULL;
+    }
+
+    return input->data_device;
+}
+
+/* !!! FIXME: just merge these into display_handle_global(). */
+void Wayland_display_add_relative_pointer_manager(SDL_VideoData *d, uint32_t id)
+{
+    d->relative_pointer_manager =
+        wl_registry_bind(d->registry, id,
+                         &zwp_relative_pointer_manager_v1_interface, 1);
+}
+
+void Wayland_display_destroy_relative_pointer_manager(SDL_VideoData *d)
+{
+    if (d->relative_pointer_manager)
+        zwp_relative_pointer_manager_v1_destroy(d->relative_pointer_manager);
+}
+
+void Wayland_display_add_pointer_constraints(SDL_VideoData *d, uint32_t id)
+{
+    d->pointer_constraints =
+        wl_registry_bind(d->registry, id,
+                         &zwp_pointer_constraints_v1_interface, 1);
+}
+
+void Wayland_display_destroy_pointer_constraints(SDL_VideoData *d)
+{
+    if (d->pointer_constraints)
+        zwp_pointer_constraints_v1_destroy(d->pointer_constraints);
+}
+
+static void
+relative_pointer_handle_relative_motion(void *data,
+                                        struct zwp_relative_pointer_v1 *pointer,
+                                        uint32_t time_hi,
+                                        uint32_t time_lo,
+                                        wl_fixed_t dx_w,
+                                        wl_fixed_t dy_w,
+                                        wl_fixed_t dx_unaccel_w,
+                                        wl_fixed_t dy_unaccel_w)
+{
+    struct SDL_WaylandInput *input = data;
+    SDL_VideoData *d = input->display;
+    SDL_WindowData *window = input->pointer_focus;
+    double dx_unaccel;
+    double dy_unaccel;
+    double dx;
+    double dy;
+
+    dx_unaccel = wl_fixed_to_double(dx_unaccel_w);
+    dy_unaccel = wl_fixed_to_double(dy_unaccel_w);
+
+    /* Add left over fraction from last event. */
+    dx_unaccel += input->dx_frac;
+    dy_unaccel += input->dy_frac;
+
+    input->dx_frac = modf(dx_unaccel, &dx);
+    input->dy_frac = modf(dy_unaccel, &dy);
+
+    if (input->pointer_focus && d->relative_mouse_mode) {
+        SDL_SendMouseMotion(window->sdlwindow, 0, 1, (int)dx, (int)dy);
+    }
+}
+
+static const struct zwp_relative_pointer_v1_listener relative_pointer_listener = {
+    relative_pointer_handle_relative_motion,
+};
+
+static void
+locked_pointer_locked(void *data,
+                      struct zwp_locked_pointer_v1 *locked_pointer)
+{
+}
+
+static void
+locked_pointer_unlocked(void *data,
+                        struct zwp_locked_pointer_v1 *locked_pointer)
+{
+}
+
+static const struct zwp_locked_pointer_v1_listener locked_pointer_listener = {
+    locked_pointer_locked,
+    locked_pointer_unlocked,
+};
+
+static void
+lock_pointer_to_window(SDL_Window *window,
+                       struct SDL_WaylandInput *input)
+{
+    SDL_WindowData *w = window->driverdata;
+    SDL_VideoData *d = input->display;
+    struct zwp_locked_pointer_v1 *locked_pointer;
+
+    if (w->locked_pointer)
+        return;
+
+    locked_pointer =
+        zwp_pointer_constraints_v1_lock_pointer(d->pointer_constraints,
+                                                w->surface,
+                                                input->pointer,
+                                                NULL,
+                                                ZWP_POINTER_CONSTRAINTS_V1_LIFETIME_PERSISTENT);
+    zwp_locked_pointer_v1_add_listener(locked_pointer,
+                                       &locked_pointer_listener,
+                                       window);
+
+    w->locked_pointer = locked_pointer;
+}
+
+int Wayland_input_lock_pointer(struct SDL_WaylandInput *input)
+{
+    SDL_VideoDevice *vd = SDL_GetVideoDevice();
+    SDL_VideoData *d = input->display;
+    SDL_Window *window;
+    struct zwp_relative_pointer_v1 *relative_pointer;
+
+    if (!d->relative_pointer_manager)
+        return -1;
+
+    if (!d->pointer_constraints)
+        return -1;
+
+    if (!input->relative_pointer) {
+        relative_pointer =
+            zwp_relative_pointer_manager_v1_get_relative_pointer(
+                d->relative_pointer_manager,
+                input->pointer);
+        zwp_relative_pointer_v1_add_listener(relative_pointer,
+                                             &relative_pointer_listener,
+                                             input);
+        input->relative_pointer = relative_pointer;
+    }
+
+    for (window = vd->windows; window; window = window->next)
+        lock_pointer_to_window(window, input);
+
+    d->relative_mouse_mode = 1;
+
+    return 0;
+}
+
+int Wayland_input_unlock_pointer(struct SDL_WaylandInput *input)
+{
+    SDL_VideoDevice *vd = SDL_GetVideoDevice();
+    SDL_VideoData *d = input->display;
+    SDL_Window *window;
+    SDL_WindowData *w;
+
+    for (window = vd->windows; window; window = window->next) {
+        w = window->driverdata;
+        if (w->locked_pointer)
+            zwp_locked_pointer_v1_destroy(w->locked_pointer);
+        w->locked_pointer = NULL;
+    }
+
+    zwp_relative_pointer_v1_destroy(input->relative_pointer);
+    input->relative_pointer = NULL;
+
+    d->relative_mouse_mode = 0;
+
+    return 0;
+}
+
+#endif /* SDL_VIDEO_DRIVER_WAYLAND */
+
+/* vi: set ts=4 sw=4 expandtab: */
diff --git a/source/3rd-party/SDL2/src/video/wayland/SDL_waylandevents_c.h b/source/3rd-party/SDL2/src/video/wayland/SDL_waylandevents_c.h
new file mode 100644
index 0000000..1c5ffe5
--- /dev/null
+++ b/source/3rd-party/SDL2/src/video/wayland/SDL_waylandevents_c.h
@@ -0,0 +1,51 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+#include "../../SDL_internal.h"
+
+#ifndef SDL_waylandevents_h_
+#define SDL_waylandevents_h_
+
+#include "SDL_waylandvideo.h"
+#include "SDL_waylandwindow.h"
+#include "SDL_waylanddatamanager.h"
+
+struct SDL_WaylandInput;
+
+extern void Wayland_PumpEvents(_THIS);
+
+extern void Wayland_display_add_input(SDL_VideoData *d, uint32_t id);
+extern void Wayland_display_destroy_input(SDL_VideoData *d);
+
+extern SDL_WaylandDataDevice* Wayland_get_data_device(struct SDL_WaylandInput *input);
+
+extern void Wayland_display_add_pointer_constraints(SDL_VideoData *d, uint32_t id);
+extern void Wayland_display_destroy_pointer_constraints(SDL_VideoData *d);
+
+extern int Wayland_input_lock_pointer(struct SDL_WaylandInput *input);
+extern int Wayland_input_unlock_pointer(struct SDL_WaylandInput *input);
+
+extern void Wayland_display_add_relative_pointer_manager(SDL_VideoData *d, uint32_t id);
+extern void Wayland_display_destroy_relative_pointer_manager(SDL_VideoData *d);
+
+#endif /* SDL_waylandevents_h_ */
+
+/* vi: set ts=4 sw=4 expandtab: */
diff --git a/source/3rd-party/SDL2/src/video/wayland/SDL_waylandmouse.c b/source/3rd-party/SDL2/src/video/wayland/SDL_waylandmouse.c
new file mode 100644
index 0000000..c77b53e
--- /dev/null
+++ b/source/3rd-party/SDL2/src/video/wayland/SDL_waylandmouse.c
@@ -0,0 +1,396 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+#include "../../SDL_internal.h"
+
+#if SDL_VIDEO_DRIVER_WAYLAND
+
+#include <sys/types.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <limits.h>
+
+#include "../SDL_sysvideo.h"
+
+#include "SDL_mouse.h"
+#include "../../events/SDL_mouse_c.h"
+#include "SDL_waylandvideo.h"
+#include "SDL_waylandevents_c.h"
+
+#include "SDL_waylanddyn.h"
+#include "wayland-cursor.h"
+
+#include "SDL_assert.h"
+
+
+typedef struct {
+    struct wl_buffer   *buffer;
+    struct wl_surface  *surface;
+
+    int                hot_x, hot_y;
+    int                w, h;
+
+    /* Either a preloaded cursor, or one we created ourselves */
+    struct wl_cursor   *cursor;
+    void               *shm_data;
+} Wayland_CursorData;
+
+static int
+wayland_create_tmp_file(off_t size)
+{
+    static const char template[] = "/sdl-shared-XXXXXX";
+    char *xdg_path;
+    char tmp_path[PATH_MAX];
+    int fd;
+
+    xdg_path = SDL_getenv("XDG_RUNTIME_DIR");
+    if (!xdg_path) {
+        return -1;
+    }
+
+    SDL_strlcpy(tmp_path, xdg_path, PATH_MAX);
+    SDL_strlcat(tmp_path, template, PATH_MAX);
+
+    fd = mkostemp(tmp_path, O_CLOEXEC);
+    if (fd < 0)
+        return -1;
+
+    if (ftruncate(fd, size) < 0) {
+        close(fd);
+        return -1;
+    }
+
+    return fd;
+}
+
+static void
+mouse_buffer_release(void *data, struct wl_buffer *buffer)
+{
+}
+
+static const struct wl_buffer_listener mouse_buffer_listener = {
+    mouse_buffer_release
+};
+
+static int
+create_buffer_from_shm(Wayland_CursorData *d,
+                       int width,
+                       int height,
+                       uint32_t format)
+{
+    SDL_VideoDevice *vd = SDL_GetVideoDevice();
+    SDL_VideoData *data = (SDL_VideoData *) vd->driverdata;
+    struct wl_shm_pool *shm_pool;
+
+    int stride = width * 4;
+    int size = stride * height;
+
+    int shm_fd;
+
+    shm_fd = wayland_create_tmp_file(size);
+    if (shm_fd < 0)
+    {
+        return SDL_SetError("Creating mouse cursor buffer failed.");
+    }
+
+    d->shm_data = mmap(NULL,
+                       size,
+                       PROT_READ | PROT_WRITE,
+                       MAP_SHARED,
+                       shm_fd,
+                       0);
+    if (d->shm_data == MAP_FAILED) {
+        d->shm_data = NULL;
+        close (shm_fd);
+        return SDL_SetError("mmap() failed.");
+    }
+
+    shm_pool = wl_shm_create_pool(data->shm, shm_fd, size);
+    d->buffer = wl_shm_pool_create_buffer(shm_pool,
+                                          0,
+                                          width,
+                                          height,
+                                          stride,
+                                          format);
+    wl_buffer_add_listener(d->buffer,
+                           &mouse_buffer_listener,
+                           d);
+
+    wl_shm_pool_destroy (shm_pool);
+    close (shm_fd);
+
+    return 0;
+}
+
+static SDL_Cursor *
+Wayland_CreateCursor(SDL_Surface *surface, int hot_x, int hot_y)
+{
+    SDL_Cursor *cursor;
+
+    cursor = calloc(1, sizeof (*cursor));
+    if (cursor) {
+        SDL_VideoDevice *vd = SDL_GetVideoDevice ();
+        SDL_VideoData *wd = (SDL_VideoData *) vd->driverdata;
+        Wayland_CursorData *data = calloc (1, sizeof (Wayland_CursorData));
+        if (!data) {
+            SDL_OutOfMemory();
+            free(cursor);
+            return NULL;
+        }
+        cursor->driverdata = (void *) data;
+
+        /* Assume ARGB8888 */
+        SDL_assert(surface->format->format == SDL_PIXELFORMAT_ARGB8888);
+        SDL_assert(surface->pitch == surface->w * 4);
+
+        /* Allocate shared memory buffer for this cursor */
+        if (create_buffer_from_shm (data,
+                                    surface->w,
+                                    surface->h,
+                                    WL_SHM_FORMAT_ARGB8888) < 0)
+        {
+            free (cursor->driverdata);
+            free (cursor);
+            return NULL;
+        }
+
+        SDL_memcpy(data->shm_data,
+                   surface->pixels,
+                   surface->h * surface->pitch);
+
+        data->surface = wl_compositor_create_surface(wd->compositor);
+        wl_surface_set_user_data(data->surface, NULL);
+
+        data->hot_x = hot_x;
+        data->hot_y = hot_y;
+        data->w = surface->w;
+        data->h = surface->h;
+    } else {
+        SDL_OutOfMemory();
+    }
+
+    return cursor;
+}
+
+static SDL_Cursor *
+CreateCursorFromWlCursor(SDL_VideoData *d, struct wl_cursor *wlcursor)
+{
+    SDL_Cursor *cursor;
+
+    cursor = calloc(1, sizeof (*cursor));
+    if (cursor) {
+        Wayland_CursorData *data = calloc (1, sizeof (Wayland_CursorData));
+        if (!data) {
+            SDL_OutOfMemory();
+            free(cursor);
+            return NULL;
+        }
+        cursor->driverdata = (void *) data;
+
+        data->buffer = WAYLAND_wl_cursor_image_get_buffer(wlcursor->images[0]);
+        data->surface = wl_compositor_create_surface(d->compositor);
+        wl_surface_set_user_data(data->surface, NULL);
+        data->hot_x = wlcursor->images[0]->hotspot_x;
+        data->hot_y = wlcursor->images[0]->hotspot_y;
+        data->w = wlcursor->images[0]->width;
+        data->h = wlcursor->images[0]->height;
+        data->cursor= wlcursor;
+    } else {
+        SDL_OutOfMemory ();
+    }
+
+    return cursor;
+}
+
+static SDL_Cursor *
+Wayland_CreateDefaultCursor()
+{
+    SDL_VideoDevice *device = SDL_GetVideoDevice();
+    SDL_VideoData *data = device->driverdata;
+
+    return CreateCursorFromWlCursor (data,
+                                     WAYLAND_wl_cursor_theme_get_cursor(data->cursor_theme,
+                                                                "left_ptr"));
+}
+
+static SDL_Cursor *
+Wayland_CreateSystemCursor(SDL_SystemCursor id)
+{
+    SDL_VideoDevice *vd = SDL_GetVideoDevice();
+    SDL_VideoData *d = vd->driverdata;
+
+    struct wl_cursor *cursor = NULL;
+
+    switch(id)
+    {
+    default:
+        SDL_assert(0);
+        return NULL;
+    case SDL_SYSTEM_CURSOR_ARROW:
+        cursor = WAYLAND_wl_cursor_theme_get_cursor(d->cursor_theme, "left_ptr");
+        break;
+    case SDL_SYSTEM_CURSOR_IBEAM:
+        cursor = WAYLAND_wl_cursor_theme_get_cursor(d->cursor_theme, "xterm");
+        break;
+    case SDL_SYSTEM_CURSOR_WAIT:
+        cursor = WAYLAND_wl_cursor_theme_get_cursor(d->cursor_theme, "watch");
+        break;
+    case SDL_SYSTEM_CURSOR_CROSSHAIR:
+        cursor = WAYLAND_wl_cursor_theme_get_cursor(d->cursor_theme, "hand1");
+        break;
+    case SDL_SYSTEM_CURSOR_WAITARROW:
+        cursor = WAYLAND_wl_cursor_theme_get_cursor(d->cursor_theme, "watch");
+        break;
+    case SDL_SYSTEM_CURSOR_SIZENWSE:
+        cursor = WAYLAND_wl_cursor_theme_get_cursor(d->cursor_theme, "hand1");
+        break;
+    case SDL_SYSTEM_CURSOR_SIZENESW:
+        cursor = WAYLAND_wl_cursor_theme_get_cursor(d->cursor_theme, "hand1");
+        break;
+    case SDL_SYSTEM_CURSOR_SIZEWE:
+        cursor = WAYLAND_wl_cursor_theme_get_cursor(d->cursor_theme, "hand1");
+        break;
+    case SDL_SYSTEM_CURSOR_SIZENS:
+        cursor = WAYLAND_wl_cursor_theme_get_cursor(d->cursor_theme, "hand1");
+        break;
+    case SDL_SYSTEM_CURSOR_SIZEALL:
+        cursor = WAYLAND_wl_cursor_theme_get_cursor(d->cursor_theme, "hand1");
+        break;
+    case SDL_SYSTEM_CURSOR_NO:
+        cursor = WAYLAND_wl_cursor_theme_get_cursor(d->cursor_theme, "xterm");
+        break;
+    case SDL_SYSTEM_CURSOR_HAND:
+        cursor = WAYLAND_wl_cursor_theme_get_cursor(d->cursor_theme, "hand1");
+        break;
+    }
+
+    return CreateCursorFromWlCursor(d, cursor);
+}
+
+static void
+Wayland_FreeCursor(SDL_Cursor *cursor)
+{
+    Wayland_CursorData *d;
+
+    if (!cursor)
+        return;
+
+    d = cursor->driverdata;
+
+    /* Probably not a cursor we own */
+    if (!d)
+        return;
+
+    if (d->buffer && !d->cursor)
+        wl_buffer_destroy(d->buffer);
+
+    if (d->surface)
+        wl_surface_destroy(d->surface);
+
+    /* Not sure what's meant to happen to shm_data */
+    free (cursor->driverdata);
+    SDL_free(cursor);
+}
+
+static int
+Wayland_ShowCursor(SDL_Cursor *cursor)
+{
+    SDL_VideoDevice *vd = SDL_GetVideoDevice();
+    SDL_VideoData *d = vd->driverdata;
+
+    struct wl_pointer *pointer = d->pointer;
+
+    if (!pointer)
+        return -1;
+
+    if (cursor)
+    {
+        Wayland_CursorData *data = cursor->driverdata;
+
+        wl_pointer_set_cursor (pointer, 0,
+                               data->surface,
+                               data->hot_x,
+                               data->hot_y);
+        wl_surface_attach(data->surface, data->buffer, 0, 0);
+        wl_surface_damage(data->surface, 0, 0, data->w, data->h);
+        wl_surface_commit(data->surface);
+    }
+    else
+    {
+        wl_pointer_set_cursor (pointer, 0,
+                               NULL,
+                               0,
+                               0);
+    }
+    
+    return 0;
+}
+
+static void
+Wayland_WarpMouse(SDL_Window *window, int x, int y)
+{
+    SDL_Unsupported();
+}
+
+static int
+Wayland_WarpMouseGlobal(int x, int y)
+{
+    return SDL_Unsupported();
+}
+
+static int
+Wayland_SetRelativeMouseMode(SDL_bool enabled)
+{
+    SDL_VideoDevice *vd = SDL_GetVideoDevice();
+    SDL_VideoData *data = (SDL_VideoData *) vd->driverdata;
+
+    if (enabled)
+        return Wayland_input_lock_pointer(data->input);
+    else
+        return Wayland_input_unlock_pointer(data->input);
+}
+
+void
+Wayland_InitMouse(void)
+{
+    SDL_Mouse *mouse = SDL_GetMouse();
+
+    mouse->CreateCursor = Wayland_CreateCursor;
+    mouse->CreateSystemCursor = Wayland_CreateSystemCursor;
+    mouse->ShowCursor = Wayland_ShowCursor;
+    mouse->FreeCursor = Wayland_FreeCursor;
+    mouse->WarpMouse = Wayland_WarpMouse;
+    mouse->WarpMouseGlobal = Wayland_WarpMouseGlobal;
+    mouse->SetRelativeMouseMode = Wayland_SetRelativeMouseMode;
+
+    SDL_SetDefaultCursor(Wayland_CreateDefaultCursor());
+}
+
+void
+Wayland_FiniMouse(void)
+{
+    /* This effectively assumes that nobody else
+     * touches SDL_Mouse which is effectively
+     * a singleton */
+}
+#endif  /* SDL_VIDEO_DRIVER_WAYLAND */
diff --git a/source/3rd-party/SDL2/src/video/wayland/SDL_waylandmouse.h b/source/3rd-party/SDL2/src/video/wayland/SDL_waylandmouse.h
new file mode 100644
index 0000000..2c50e5f
--- /dev/null
+++ b/source/3rd-party/SDL2/src/video/wayland/SDL_waylandmouse.h
@@ -0,0 +1,31 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+#include "../../SDL_internal.h"
+#include "SDL_mouse.h"
+#include "SDL_waylandvideo.h"
+
+#if SDL_VIDEO_DRIVER_WAYLAND
+
+extern void Wayland_InitMouse(void);
+extern void Wayland_FiniMouse(void);
+
+#endif
diff --git a/source/3rd-party/SDL2/src/video/wayland/SDL_waylandopengles.c b/source/3rd-party/SDL2/src/video/wayland/SDL_waylandopengles.c
new file mode 100644
index 0000000..9c0b845
--- /dev/null
+++ b/source/3rd-party/SDL2/src/video/wayland/SDL_waylandopengles.c
@@ -0,0 +1,93 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+#include "../../SDL_internal.h"
+
+#if SDL_VIDEO_DRIVER_WAYLAND && SDL_VIDEO_OPENGL_EGL
+
+#include "SDL_waylandvideo.h"
+#include "SDL_waylandopengles.h"
+#include "SDL_waylandwindow.h"
+#include "SDL_waylandevents_c.h"
+#include "SDL_waylanddyn.h"
+
+/* EGL implementation of SDL OpenGL ES support */
+
+int
+Wayland_GLES_LoadLibrary(_THIS, const char *path) {
+    int ret;
+    SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
+    
+    ret = SDL_EGL_LoadLibrary(_this, path, (NativeDisplayType) data->display, 0);
+
+    Wayland_PumpEvents(_this);
+    WAYLAND_wl_display_flush(data->display);
+    
+    return ret;
+}
+
+
+SDL_GLContext
+Wayland_GLES_CreateContext(_THIS, SDL_Window * window)
+{
+    SDL_GLContext context;
+    context = SDL_EGL_CreateContext(_this, ((SDL_WindowData *) window->driverdata)->egl_surface);
+    WAYLAND_wl_display_flush( ((SDL_VideoData*)_this->driverdata)->display );
+    
+    return context;
+}
+
+int
+Wayland_GLES_SwapWindow(_THIS, SDL_Window *window)
+{
+    if (SDL_EGL_SwapBuffers(_this, ((SDL_WindowData *) window->driverdata)->egl_surface) < 0) {
+        return -1;
+    }
+    WAYLAND_wl_display_flush( ((SDL_VideoData*)_this->driverdata)->display );
+    return 0;
+}
+
+int
+Wayland_GLES_MakeCurrent(_THIS, SDL_Window * window, SDL_GLContext context)
+{
+    int ret;
+    
+    if (window && context) {
+        ret = SDL_EGL_MakeCurrent(_this, ((SDL_WindowData *) window->driverdata)->egl_surface, context);
+    }
+    else {
+        ret = SDL_EGL_MakeCurrent(_this, NULL, NULL);
+    }
+    
+    WAYLAND_wl_display_flush( ((SDL_VideoData*)_this->driverdata)->display );
+    
+    return ret;
+}
+
+void 
+Wayland_GLES_DeleteContext(_THIS, SDL_GLContext context)
+{
+    SDL_EGL_DeleteContext(_this, context);
+    WAYLAND_wl_display_flush( ((SDL_VideoData*)_this->driverdata)->display );
+}
+
+#endif /* SDL_VIDEO_DRIVER_WAYLAND && SDL_VIDEO_OPENGL_EGL */
+
+/* vi: set ts=4 sw=4 expandtab: */
diff --git a/source/3rd-party/SDL2/src/video/wayland/SDL_waylandopengles.h b/source/3rd-party/SDL2/src/video/wayland/SDL_waylandopengles.h
new file mode 100644
index 0000000..58d7f9b
--- /dev/null
+++ b/source/3rd-party/SDL2/src/video/wayland/SDL_waylandopengles.h
@@ -0,0 +1,49 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+#include "../../SDL_internal.h"
+
+#ifndef SDL_waylandopengles_h_
+#define SDL_waylandopengles_h_
+
+#include "../SDL_sysvideo.h"
+#include "../SDL_egl_c.h"
+
+typedef struct SDL_PrivateGLESData
+{
+    int dummy;
+} SDL_PrivateGLESData;
+
+/* OpenGLES functions */
+#define Wayland_GLES_GetAttribute SDL_EGL_GetAttribute
+#define Wayland_GLES_GetProcAddress SDL_EGL_GetProcAddress
+#define Wayland_GLES_UnloadLibrary SDL_EGL_UnloadLibrary
+#define Wayland_GLES_SetSwapInterval SDL_EGL_SetSwapInterval
+#define Wayland_GLES_GetSwapInterval SDL_EGL_GetSwapInterval
+
+extern int Wayland_GLES_LoadLibrary(_THIS, const char *path);
+extern SDL_GLContext Wayland_GLES_CreateContext(_THIS, SDL_Window * window);
+extern int Wayland_GLES_SwapWindow(_THIS, SDL_Window * window);
+extern int Wayland_GLES_MakeCurrent(_THIS, SDL_Window * window, SDL_GLContext context);
+extern void Wayland_GLES_DeleteContext(_THIS, SDL_GLContext context);
+
+#endif /* SDL_waylandopengles_h_ */
+
+/* vi: set ts=4 sw=4 expandtab: */
diff --git a/source/3rd-party/SDL2/src/video/wayland/SDL_waylandsym.h b/source/3rd-party/SDL2/src/video/wayland/SDL_waylandsym.h
new file mode 100644
index 0000000..77783df
--- /dev/null
+++ b/source/3rd-party/SDL2/src/video/wayland/SDL_waylandsym.h
@@ -0,0 +1,127 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+/* *INDENT-OFF* */
+
+#ifndef SDL_WAYLAND_MODULE
+#define SDL_WAYLAND_MODULE(modname)
+#endif
+
+#ifndef SDL_WAYLAND_SYM
+#define SDL_WAYLAND_SYM(rc,fn,params)
+#endif
+
+#ifndef SDL_WAYLAND_INTERFACE
+#define SDL_WAYLAND_INTERFACE(iface)
+#endif
+
+SDL_WAYLAND_MODULE(WAYLAND_CLIENT)
+SDL_WAYLAND_SYM(void, wl_proxy_marshal, (struct wl_proxy *, uint32_t, ...))
+SDL_WAYLAND_SYM(struct wl_proxy *, wl_proxy_create, (struct wl_proxy *, const struct wl_interface *))
+SDL_WAYLAND_SYM(void, wl_proxy_destroy, (struct wl_proxy *))
+SDL_WAYLAND_SYM(int, wl_proxy_add_listener, (struct wl_proxy *, void (**)(void), void *))
+SDL_WAYLAND_SYM(void, wl_proxy_set_user_data, (struct wl_proxy *, void *))
+SDL_WAYLAND_SYM(void *, wl_proxy_get_user_data, (struct wl_proxy *))
+SDL_WAYLAND_SYM(uint32_t, wl_proxy_get_id, (struct wl_proxy *))
+SDL_WAYLAND_SYM(const char *, wl_proxy_get_class, (struct wl_proxy *))
+SDL_WAYLAND_SYM(void, wl_proxy_set_queue, (struct wl_proxy *, struct wl_event_queue *))
+SDL_WAYLAND_SYM(struct wl_display *, wl_display_connect, (const char *))
+SDL_WAYLAND_SYM(struct wl_display *, wl_display_connect_to_fd, (int))
+SDL_WAYLAND_SYM(void, wl_display_disconnect, (struct wl_display *))
+SDL_WAYLAND_SYM(int, wl_display_get_fd, (struct wl_display *))
+SDL_WAYLAND_SYM(int, wl_display_dispatch, (struct wl_display *))
+SDL_WAYLAND_SYM(int, wl_display_dispatch_queue, (struct wl_display *, struct wl_event_queue *))
+SDL_WAYLAND_SYM(int, wl_display_dispatch_queue_pending, (struct wl_display *, struct wl_event_queue *))
+SDL_WAYLAND_SYM(int, wl_display_dispatch_pending, (struct wl_display *))
+SDL_WAYLAND_SYM(int, wl_display_get_error, (struct wl_display *))
+SDL_WAYLAND_SYM(int, wl_display_flush, (struct wl_display *))
+SDL_WAYLAND_SYM(int, wl_display_roundtrip, (struct wl_display *))
+SDL_WAYLAND_SYM(struct wl_event_queue *, wl_display_create_queue, (struct wl_display *))
+SDL_WAYLAND_SYM(void, wl_log_set_handler_client, (wl_log_func_t))
+SDL_WAYLAND_SYM(void, wl_list_init, (struct wl_list *))
+SDL_WAYLAND_SYM(void, wl_list_insert, (struct wl_list *, struct wl_list *) )
+SDL_WAYLAND_SYM(void, wl_list_remove, (struct wl_list *))
+SDL_WAYLAND_SYM(int, wl_list_length, (const struct wl_list *))
+SDL_WAYLAND_SYM(int, wl_list_empty, (const struct wl_list *))
+SDL_WAYLAND_SYM(void, wl_list_insert_list, (struct wl_list *, struct wl_list *))
+
+/* These functions are available in Wayland >= 1.4 */
+SDL_WAYLAND_MODULE(WAYLAND_CLIENT_1_4)
+SDL_WAYLAND_SYM(struct wl_proxy *, wl_proxy_marshal_constructor, (struct wl_proxy *, uint32_t opcode, const struct wl_interface *interface, ...))
+
+SDL_WAYLAND_MODULE(WAYLAND_CLIENT_1_10)
+SDL_WAYLAND_SYM(struct wl_proxy *, wl_proxy_marshal_constructor_versioned, (struct wl_proxy *proxy, uint32_t opcode, const struct wl_interface *interface, uint32_t version, ...))
+
+SDL_WAYLAND_INTERFACE(wl_seat_interface)
+SDL_WAYLAND_INTERFACE(wl_surface_interface)
+SDL_WAYLAND_INTERFACE(wl_shm_pool_interface)
+SDL_WAYLAND_INTERFACE(wl_buffer_interface)
+SDL_WAYLAND_INTERFACE(wl_registry_interface)
+SDL_WAYLAND_INTERFACE(wl_shell_surface_interface)
+SDL_WAYLAND_INTERFACE(wl_region_interface)
+SDL_WAYLAND_INTERFACE(wl_pointer_interface)
+SDL_WAYLAND_INTERFACE(wl_keyboard_interface)
+SDL_WAYLAND_INTERFACE(wl_compositor_interface)
+SDL_WAYLAND_INTERFACE(wl_output_interface)
+SDL_WAYLAND_INTERFACE(wl_shell_interface)
+SDL_WAYLAND_INTERFACE(wl_shm_interface)
+SDL_WAYLAND_INTERFACE(wl_data_device_interface)
+SDL_WAYLAND_INTERFACE(wl_data_source_interface)
+SDL_WAYLAND_INTERFACE(wl_data_offer_interface)
+SDL_WAYLAND_INTERFACE(wl_data_device_manager_interface)
+
+SDL_WAYLAND_MODULE(WAYLAND_EGL)
+SDL_WAYLAND_SYM(struct wl_egl_window *, wl_egl_window_create, (struct wl_surface *, int, int))
+SDL_WAYLAND_SYM(void, wl_egl_window_destroy, (struct wl_egl_window *))
+SDL_WAYLAND_SYM(void, wl_egl_window_resize, (struct wl_egl_window *, int, int, int, int))
+SDL_WAYLAND_SYM(void, wl_egl_window_get_attached_size, (struct wl_egl_window *, int *, int *))
+
+SDL_WAYLAND_MODULE(WAYLAND_CURSOR)
+SDL_WAYLAND_SYM(struct wl_cursor_theme *, wl_cursor_theme_load, (const char *, int , struct wl_shm *))
+SDL_WAYLAND_SYM(void, wl_cursor_theme_destroy, (struct wl_cursor_theme *))
+SDL_WAYLAND_SYM(struct wl_cursor *, wl_cursor_theme_get_cursor, (struct wl_cursor_theme *, const char *))
+SDL_WAYLAND_SYM(struct wl_buffer *, wl_cursor_image_get_buffer, (struct wl_cursor_image *))
+SDL_WAYLAND_SYM(int, wl_cursor_frame, (struct wl_cursor *, uint32_t))
+
+SDL_WAYLAND_MODULE(WAYLAND_XKB)
+SDL_WAYLAND_SYM(int, xkb_state_key_get_syms, (struct xkb_state *, xkb_keycode_t, const xkb_keysym_t **))
+SDL_WAYLAND_SYM(int, xkb_keysym_to_utf8, (xkb_keysym_t, char *, size_t) )
+SDL_WAYLAND_SYM(struct xkb_keymap *, xkb_keymap_new_from_string, (struct xkb_context *, const char *, enum xkb_keymap_format, enum xkb_keymap_compile_flags))
+SDL_WAYLAND_SYM(struct xkb_state *, xkb_state_new, (struct xkb_keymap *) )
+SDL_WAYLAND_SYM(void, xkb_keymap_unref, (struct xkb_keymap *) )
+SDL_WAYLAND_SYM(void, xkb_state_unref, (struct xkb_state *) )
+SDL_WAYLAND_SYM(void, xkb_context_unref, (struct xkb_context *) )
+SDL_WAYLAND_SYM(struct xkb_context *, xkb_context_new, (enum xkb_context_flags flags) )
+SDL_WAYLAND_SYM(enum xkb_state_component, xkb_state_update_mask, (struct xkb_state *state,\
+                      xkb_mod_mask_t depressed_mods,\
+                      xkb_mod_mask_t latched_mods,\
+                      xkb_mod_mask_t locked_mods,\
+                      xkb_layout_index_t depressed_layout,\
+                      xkb_layout_index_t latched_layout,\
+                      xkb_layout_index_t locked_layout) )
+
+#undef SDL_WAYLAND_MODULE
+#undef SDL_WAYLAND_SYM
+#undef SDL_WAYLAND_INTERFACE
+
+/* *INDENT-ON* */
+
+/* vi: set ts=4 sw=4 expandtab: */
diff --git a/source/3rd-party/SDL2/src/video/wayland/SDL_waylandtouch.c b/source/3rd-party/SDL2/src/video/wayland/SDL_waylandtouch.c
new file mode 100644
index 0000000..1cf37c1
--- /dev/null
+++ b/source/3rd-party/SDL2/src/video/wayland/SDL_waylandtouch.c
@@ -0,0 +1,265 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+/* Contributed by Thomas Perl <thomas.perl@jollamobile.com> */
+
+#include "../../SDL_internal.h"
+
+#ifdef SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH
+
+#include "SDL_log.h"
+#include "SDL_waylandtouch.h"
+#include "../../events/SDL_touch_c.h"
+
+struct SDL_WaylandTouch {
+    struct qt_touch_extension *touch_extension;
+};
+
+
+/**
+ * Qt TouchPointState
+ * adapted from qtbase/src/corelib/global/qnamespace.h
+ **/
+enum QtWaylandTouchPointState {
+    QtWaylandTouchPointPressed    = 0x01,
+    QtWaylandTouchPointMoved      = 0x02,
+    /*
+    Never sent by the server:
+    QtWaylandTouchPointStationary = 0x04,
+    */
+    QtWaylandTouchPointReleased   = 0x08,
+};
+
+static void
+touch_handle_touch(void *data,
+        struct qt_touch_extension *qt_touch_extension,
+        uint32_t time,
+        uint32_t id,
+        uint32_t state,
+        int32_t x,
+        int32_t y,
+        int32_t normalized_x,
+        int32_t normalized_y,
+        int32_t width,
+        int32_t height,
+        uint32_t pressure,
+        int32_t velocity_x,
+        int32_t velocity_y,
+        uint32_t flags,
+        struct wl_array *rawdata)
+{
+    /**
+     * Event is assembled in QtWayland in TouchExtensionGlobal::postTouchEvent
+     * (src/compositor/wayland_wrapper/qwltouch.cpp)
+     **/
+
+    float FIXED_TO_FLOAT = 1. / 10000.;
+    float xf = FIXED_TO_FLOAT * x;
+    float yf = FIXED_TO_FLOAT * y;
+
+    float PRESSURE_TO_FLOAT = 1. / 255.;
+    float pressuref = PRESSURE_TO_FLOAT * pressure;
+
+    uint32_t touchState = state & 0xFFFF;
+    /*
+    Other fields that are sent by the server (qwltouch.cpp),
+    but not used at the moment can be decoded in this way:
+
+    uint32_t sentPointCount = state >> 16;
+    uint32_t touchFlags = flags & 0xFFFF;
+    uint32_t capabilities = flags >> 16;
+    */
+
+    SDL_TouchID deviceId = 1;
+    if (SDL_AddTouch(deviceId, "qt_touch_extension") < 0) {
+         SDL_Log("error: can't add touch %s, %d", __FILE__, __LINE__);
+    }
+
+    switch (touchState) {
+        case QtWaylandTouchPointPressed:
+        case QtWaylandTouchPointReleased:
+            SDL_SendTouch(deviceId, (SDL_FingerID)id,
+                    (touchState == QtWaylandTouchPointPressed) ? SDL_TRUE : SDL_FALSE,
+                    xf, yf, pressuref);
+            break;
+        case QtWaylandTouchPointMoved:
+            SDL_SendTouchMotion(deviceId, (SDL_FingerID)id, xf, yf, pressuref);
+            break;
+        default:
+            /* Should not happen */
+            break;
+    }
+}
+
+static void
+touch_handle_configure(void *data,
+        struct qt_touch_extension *qt_touch_extension,
+        uint32_t flags)
+{
+}
+
+
+/* wayland-qt-touch-extension.c BEGINS */
+
+static const struct qt_touch_extension_listener touch_listener = {
+    touch_handle_touch,
+    touch_handle_configure,
+};
+
+static const struct wl_interface *qt_touch_extension_types[] = {
+    NULL,
+    NULL,
+    NULL,
+    NULL,
+    NULL,
+    NULL,
+    NULL,
+    NULL,
+    NULL,
+    NULL,
+    NULL,
+    NULL,
+    NULL,
+    NULL,
+};
+
+static const struct wl_message qt_touch_extension_requests[] = {
+    { "dummy", "", qt_touch_extension_types + 0 },
+};
+
+static const struct wl_message qt_touch_extension_events[] = {
+    { "touch", "uuuiiiiiiuiiua", qt_touch_extension_types + 0 },
+    { "configure", "u", qt_touch_extension_types + 0 },
+};
+
+WL_EXPORT const struct wl_interface qt_touch_extension_interface = {
+    "qt_touch_extension", 1,
+    1, qt_touch_extension_requests,
+    2, qt_touch_extension_events,
+};
+
+/* wayland-qt-touch-extension.c ENDS */
+
+/* wayland-qt-windowmanager.c BEGINS */
+static const struct wl_interface *qt_windowmanager_types[] = {
+    NULL,
+    NULL,
+};
+
+static const struct wl_message qt_windowmanager_requests[] = {
+    { "open_url", "us", qt_windowmanager_types + 0 },
+};
+
+static const struct wl_message qt_windowmanager_events[] = {
+    { "hints", "i", qt_windowmanager_types + 0 },
+    { "quit", "", qt_windowmanager_types + 0 },
+};
+
+WL_EXPORT const struct wl_interface qt_windowmanager_interface = {
+    "qt_windowmanager", 1,
+    1, qt_windowmanager_requests,
+    2, qt_windowmanager_events,
+};
+/* wayland-qt-windowmanager.c ENDS */
+
+/* wayland-qt-surface-extension.c BEGINS */
+extern const struct wl_interface qt_extended_surface_interface;
+#ifndef SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC
+extern const struct wl_interface wl_surface_interface;
+#endif
+
+static const struct wl_interface *qt_surface_extension_types[] = {
+    NULL,
+    NULL,
+    &qt_extended_surface_interface,
+#ifdef SDL_VIDEO_DRIVER_WAYLAND_DYNAMIC
+    /* FIXME: Set this dynamically to (*WAYLAND_wl_surface_interface) ? 
+     * The value comes from auto generated code and does 
+     * not appear to actually be used anywhere
+     */
+    NULL, 
+#else
+    &wl_surface_interface,
+#endif    
+};
+
+static const struct wl_message qt_surface_extension_requests[] = {
+    { "get_extended_surface", "no", qt_surface_extension_types + 2 },
+};
+
+WL_EXPORT const struct wl_interface qt_surface_extension_interface = {
+    "qt_surface_extension", 1,
+    1, qt_surface_extension_requests,
+    0, NULL,
+};
+
+static const struct wl_message qt_extended_surface_requests[] = {
+    { "update_generic_property", "sa", qt_surface_extension_types + 0 },
+    { "set_content_orientation", "i", qt_surface_extension_types + 0 },
+    { "set_window_flags", "i", qt_surface_extension_types + 0 },
+};
+
+static const struct wl_message qt_extended_surface_events[] = {
+    { "onscreen_visibility", "i", qt_surface_extension_types + 0 },
+    { "set_generic_property", "sa", qt_surface_extension_types + 0 },
+    { "close", "", qt_surface_extension_types + 0 },
+};
+
+WL_EXPORT const struct wl_interface qt_extended_surface_interface = {
+    "qt_extended_surface", 1,
+    3, qt_extended_surface_requests,
+    3, qt_extended_surface_events,
+};
+
+/* wayland-qt-surface-extension.c ENDS */
+
+void
+Wayland_touch_create(SDL_VideoData *data, uint32_t id)
+{
+    struct SDL_WaylandTouch *touch;
+
+    if (data->touch) {
+        Wayland_touch_destroy(data);
+    }
+
+    /* !!! FIXME: check for failure, call SDL_OutOfMemory() */
+    data->touch = SDL_malloc(sizeof(struct SDL_WaylandTouch));
+
+    touch = data->touch;
+    touch->touch_extension = wl_registry_bind(data->registry, id, &qt_touch_extension_interface, 1);
+    qt_touch_extension_add_listener(touch->touch_extension, &touch_listener, data);
+}
+
+void
+Wayland_touch_destroy(SDL_VideoData *data)
+{
+    if (data->touch) {
+        struct SDL_WaylandTouch *touch = data->touch;
+        if (touch->touch_extension) {
+            qt_touch_extension_destroy(touch->touch_extension);
+        }
+
+        SDL_free(data->touch);
+        data->touch = NULL;
+    }
+}
+
+#endif /* SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH */
diff --git a/source/3rd-party/SDL2/src/video/wayland/SDL_waylandtouch.h b/source/3rd-party/SDL2/src/video/wayland/SDL_waylandtouch.h
new file mode 100644
index 0000000..eba0da8
--- /dev/null
+++ b/source/3rd-party/SDL2/src/video/wayland/SDL_waylandtouch.h
@@ -0,0 +1,352 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+#ifndef SDL_waylandtouch_h_
+#define SDL_waylandtouch_h_
+
+#include "../../SDL_internal.h"
+
+#ifdef SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH
+
+#include "SDL_waylandvideo.h"
+#include <stdint.h>
+#include <stddef.h>
+#include "wayland-util.h"
+#include "SDL_waylanddyn.h"
+
+
+void Wayland_touch_create(SDL_VideoData *data, uint32_t id);
+void Wayland_touch_destroy(SDL_VideoData *data);
+
+struct qt_touch_extension;
+
+/* Autogenerated QT headers */
+
+/*
+ Support for Wayland with QmlCompositor as Server
+================================================
+
+The Wayland video driver has support for some additional features when
+using QtWayland's "qmlcompositor" as Wayland server. This is needed for touch
+input when running SDL applications under a qmlcompositor Wayland server.
+
+The files following headers have been
+generated from the Wayland XML Protocol Definition in QtWayland as follows:
+
+Clone QtWayland from Git:
+    http://qt.gitorious.org/qt/qtwayland/
+
+Generate headers and glue code:
+    for extension in touch-extension surface-extension windowmanager; do
+        wayland-scanner client-header < src/extensions/$extension.xml > wayland-qt-$extension.h
+        wayland-scanner code < src/extensions/$extension.xml > wayland-qt-$extension.c
+    done
+
+*/
+
+/* wayland-qt-surface-extension.h */
+
+struct wl_client;
+struct wl_resource;
+
+struct qt_surface_extension;
+struct qt_extended_surface;
+
+extern const struct wl_interface qt_surface_extension_interface;
+extern const struct wl_interface qt_extended_surface_interface;
+
+#define QT_SURFACE_EXTENSION_GET_EXTENDED_SURFACE   0
+
+static inline void
+qt_surface_extension_set_user_data(struct qt_surface_extension *qt_surface_extension, void *user_data)
+{
+    wl_proxy_set_user_data((struct wl_proxy *) qt_surface_extension, user_data);
+}
+
+static inline void *
+qt_surface_extension_get_user_data(struct qt_surface_extension *qt_surface_extension)
+{
+    return wl_proxy_get_user_data((struct wl_proxy *) qt_surface_extension);
+}
+
+static inline void
+qt_surface_extension_destroy(struct qt_surface_extension *qt_surface_extension)
+{
+    WAYLAND_wl_proxy_destroy((struct wl_proxy *) qt_surface_extension);
+}
+
+static inline struct qt_extended_surface *
+qt_surface_extension_get_extended_surface(struct qt_surface_extension *qt_surface_extension, struct wl_surface *surface)
+{
+    struct wl_proxy *id;
+
+    id = wl_proxy_create((struct wl_proxy *) qt_surface_extension,
+                 &qt_extended_surface_interface);
+    if (!id)
+        return NULL;
+
+    WAYLAND_wl_proxy_marshal((struct wl_proxy *) qt_surface_extension,
+             QT_SURFACE_EXTENSION_GET_EXTENDED_SURFACE, id, surface);
+
+    return (struct qt_extended_surface *) id;
+}
+
+#ifndef QT_EXTENDED_SURFACE_ORIENTATION_ENUM
+#define QT_EXTENDED_SURFACE_ORIENTATION_ENUM
+enum qt_extended_surface_orientation {
+    QT_EXTENDED_SURFACE_ORIENTATION_PRIMARYORIENTATION = 0,
+    QT_EXTENDED_SURFACE_ORIENTATION_PORTRAITORIENTATION = 1,
+    QT_EXTENDED_SURFACE_ORIENTATION_LANDSCAPEORIENTATION = 2,
+    QT_EXTENDED_SURFACE_ORIENTATION_INVERTEDPORTRAITORIENTATION = 4,
+    QT_EXTENDED_SURFACE_ORIENTATION_INVERTEDLANDSCAPEORIENTATION = 8,
+};
+#endif /* QT_EXTENDED_SURFACE_ORIENTATION_ENUM */
+
+#ifndef QT_EXTENDED_SURFACE_WINDOWFLAG_ENUM
+#define QT_EXTENDED_SURFACE_WINDOWFLAG_ENUM
+enum qt_extended_surface_windowflag {
+    QT_EXTENDED_SURFACE_WINDOWFLAG_OVERRIDESSYSTEMGESTURES = 1,
+    QT_EXTENDED_SURFACE_WINDOWFLAG_STAYSONTOP = 2,
+};
+#endif /* QT_EXTENDED_SURFACE_WINDOWFLAG_ENUM */
+
+struct qt_extended_surface_listener {
+    /**
+     * onscreen_visibility - (none)
+     * @visible: (none)
+     */
+    void (*onscreen_visibility)(void *data,
+                    struct qt_extended_surface *qt_extended_surface,
+                    int32_t visible);
+    /**
+     * set_generic_property - (none)
+     * @name: (none)
+     * @value: (none)
+     */
+    void (*set_generic_property)(void *data,
+                     struct qt_extended_surface *qt_extended_surface,
+                     const char *name,
+                     struct wl_array *value);
+    /**
+     * close - (none)
+     */
+    void (*close)(void *data,
+              struct qt_extended_surface *qt_extended_surface);
+};
+
+static inline int
+qt_extended_surface_add_listener(struct qt_extended_surface *qt_extended_surface,
+                 const struct qt_extended_surface_listener *listener, void *data)
+{
+    return wl_proxy_add_listener((struct wl_proxy *) qt_extended_surface,
+                     (void (**)(void)) listener, data);
+}
+
+#define QT_EXTENDED_SURFACE_UPDATE_GENERIC_PROPERTY 0
+#define QT_EXTENDED_SURFACE_SET_CONTENT_ORIENTATION 1
+#define QT_EXTENDED_SURFACE_SET_WINDOW_FLAGS    2
+
+static inline void
+qt_extended_surface_set_user_data(struct qt_extended_surface *qt_extended_surface, void *user_data)
+{
+    WAYLAND_wl_proxy_set_user_data((struct wl_proxy *) qt_extended_surface, user_data);
+}
+
+static inline void *
+qt_extended_surface_get_user_data(struct qt_extended_surface *qt_extended_surface)
+{
+    return WAYLAND_wl_proxy_get_user_data((struct wl_proxy *) qt_extended_surface);
+}
+
+static inline void
+qt_extended_surface_destroy(struct qt_extended_surface *qt_extended_surface)
+{
+    WAYLAND_wl_proxy_destroy((struct wl_proxy *) qt_extended_surface);
+}
+
+static inline void
+qt_extended_surface_update_generic_property(struct qt_extended_surface *qt_extended_surface, const char *name, struct wl_array *value)
+{
+    WAYLAND_wl_proxy_marshal((struct wl_proxy *) qt_extended_surface,
+             QT_EXTENDED_SURFACE_UPDATE_GENERIC_PROPERTY, name, value);
+}
+
+static inline void
+qt_extended_surface_set_content_orientation(struct qt_extended_surface *qt_extended_surface, int32_t orientation)
+{
+    WAYLAND_wl_proxy_marshal((struct wl_proxy *) qt_extended_surface,
+             QT_EXTENDED_SURFACE_SET_CONTENT_ORIENTATION, orientation);
+}
+
+static inline void
+qt_extended_surface_set_window_flags(struct qt_extended_surface *qt_extended_surface, int32_t flags)
+{
+    WAYLAND_wl_proxy_marshal((struct wl_proxy *) qt_extended_surface,
+             QT_EXTENDED_SURFACE_SET_WINDOW_FLAGS, flags);
+}
+
+/* wayland-qt-touch-extension.h */
+
+extern const struct wl_interface qt_touch_extension_interface;
+
+#ifndef QT_TOUCH_EXTENSION_FLAGS_ENUM
+#define QT_TOUCH_EXTENSION_FLAGS_ENUM
+enum qt_touch_extension_flags {
+    QT_TOUCH_EXTENSION_FLAGS_MOUSE_FROM_TOUCH = 0x1,
+};
+#endif /* QT_TOUCH_EXTENSION_FLAGS_ENUM */
+
+struct qt_touch_extension_listener {
+    /**
+     * touch - (none)
+     * @time: (none)
+     * @id: (none)
+     * @state: (none)
+     * @x: (none)
+     * @y: (none)
+     * @normalized_x: (none)
+     * @normalized_y: (none)
+     * @width: (none)
+     * @height: (none)
+     * @pressure: (none)
+     * @velocity_x: (none)
+     * @velocity_y: (none)
+     * @flags: (none)
+     * @rawdata: (none)
+     */
+    void (*touch)(void *data,
+              struct qt_touch_extension *qt_touch_extension,
+              uint32_t time,
+              uint32_t id,
+              uint32_t state,
+              int32_t x,
+              int32_t y,
+              int32_t normalized_x,
+              int32_t normalized_y,
+              int32_t width,
+              int32_t height,
+              uint32_t pressure,
+              int32_t velocity_x,
+              int32_t velocity_y,
+              uint32_t flags,
+              struct wl_array *rawdata);
+    /**
+     * configure - (none)
+     * @flags: (none)
+     */
+    void (*configure)(void *data,
+              struct qt_touch_extension *qt_touch_extension,
+              uint32_t flags);
+};
+
+static inline int
+qt_touch_extension_add_listener(struct qt_touch_extension *qt_touch_extension,
+                const struct qt_touch_extension_listener *listener, void *data)
+{
+    return wl_proxy_add_listener((struct wl_proxy *) qt_touch_extension,
+                     (void (**)(void)) listener, data);
+}
+
+#define QT_TOUCH_EXTENSION_DUMMY    0
+
+static inline void
+qt_touch_extension_set_user_data(struct qt_touch_extension *qt_touch_extension, void *user_data)
+{
+    WAYLAND_wl_proxy_set_user_data((struct wl_proxy *) qt_touch_extension, user_data);
+}
+
+static inline void *
+qt_touch_extension_get_user_data(struct qt_touch_extension *qt_touch_extension)
+{
+    return WAYLAND_wl_proxy_get_user_data((struct wl_proxy *) qt_touch_extension);
+}
+
+static inline void
+qt_touch_extension_destroy(struct qt_touch_extension *qt_touch_extension)
+{
+    WAYLAND_wl_proxy_destroy((struct wl_proxy *) qt_touch_extension);
+}
+
+static inline void
+qt_touch_extension_dummy(struct qt_touch_extension *qt_touch_extension)
+{
+    WAYLAND_wl_proxy_marshal((struct wl_proxy *) qt_touch_extension,
+             QT_TOUCH_EXTENSION_DUMMY);
+}
+
+
+/* wayland-qt-windowmanager.h */
+
+extern const struct wl_interface qt_windowmanager_interface;
+
+struct qt_windowmanager_listener {
+    /**
+     * hints - (none)
+     * @show_is_fullscreen: (none)
+     */
+    void (*hints)(void *data,
+              struct qt_windowmanager *qt_windowmanager,
+              int32_t show_is_fullscreen);
+    /**
+     * quit - (none)
+     */
+    void (*quit)(void *data,
+             struct qt_windowmanager *qt_windowmanager);
+};
+
+static inline int
+qt_windowmanager_add_listener(struct qt_windowmanager *qt_windowmanager,
+                  const struct qt_windowmanager_listener *listener, void *data)
+{
+    return wl_proxy_add_listener((struct wl_proxy *) qt_windowmanager,
+                     (void (**)(void)) listener, data);
+}
+
+#define QT_WINDOWMANAGER_OPEN_URL   0
+
+static inline void
+qt_windowmanager_set_user_data(struct qt_windowmanager *qt_windowmanager, void *user_data)
+{
+    WAYLAND_wl_proxy_set_user_data((struct wl_proxy *) qt_windowmanager, user_data);
+}
+
+static inline void *
+qt_windowmanager_get_user_data(struct qt_windowmanager *qt_windowmanager)
+{
+    return WAYLAND_wl_proxy_get_user_data((struct wl_proxy *) qt_windowmanager);
+}
+
+static inline void
+qt_windowmanager_destroy(struct qt_windowmanager *qt_windowmanager)
+{
+    WAYLAND_wl_proxy_destroy((struct wl_proxy *) qt_windowmanager);
+}
+
+static inline void
+qt_windowmanager_open_url(struct qt_windowmanager *qt_windowmanager, uint32_t remaining, const char *url)
+{
+    WAYLAND_wl_proxy_marshal((struct wl_proxy *) qt_windowmanager,
+             QT_WINDOWMANAGER_OPEN_URL, remaining, url);
+}
+
+#endif /* SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH */
+
+#endif /* SDL_waylandtouch_h_ */
diff --git a/source/3rd-party/SDL2/src/video/wayland/SDL_waylandvideo.c b/source/3rd-party/SDL2/src/video/wayland/SDL_waylandvideo.c
new file mode 100644
index 0000000..b6155e7
--- /dev/null
+++ b/source/3rd-party/SDL2/src/video/wayland/SDL_waylandvideo.c
@@ -0,0 +1,517 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+#include "../../SDL_internal.h"
+
+#if SDL_VIDEO_DRIVER_WAYLAND
+
+#include "SDL_video.h"
+#include "SDL_mouse.h"
+#include "SDL_stdinc.h"
+#include "../../events/SDL_events_c.h"
+
+#include "SDL_waylandvideo.h"
+#include "SDL_waylandevents_c.h"
+#include "SDL_waylandwindow.h"
+#include "SDL_waylandopengles.h"
+#include "SDL_waylandmouse.h"
+#include "SDL_waylandtouch.h"
+#include "SDL_waylandclipboard.h"
+#include "SDL_waylandvulkan.h"
+
+#include <sys/types.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <xkbcommon/xkbcommon.h>
+
+#include "SDL_waylanddyn.h"
+#include <wayland-util.h>
+
+#include "xdg-shell-client-protocol.h"
+#include "xdg-shell-unstable-v6-client-protocol.h"
+
+#define WAYLANDVID_DRIVER_NAME "wayland"
+
+/* Initialization/Query functions */
+static int
+Wayland_VideoInit(_THIS);
+
+static void
+Wayland_GetDisplayModes(_THIS, SDL_VideoDisplay *sdl_display);
+static int
+Wayland_SetDisplayMode(_THIS, SDL_VideoDisplay *display, SDL_DisplayMode *mode);
+
+static void
+Wayland_VideoQuit(_THIS);
+
+/* Find out what class name we should use
+ * Based on src/video/x11/SDL_x11video.c */
+static char *
+get_classname()
+{
+/* !!! FIXME: this is probably wrong, albeit harmless in many common cases. From protocol spec:
+    "The surface class identifies the general class of applications
+    to which the surface belongs. A common convention is to use the
+    file name (or the full path if it is a non-standard location) of
+    the application's .desktop file as the class." */
+
+    char *spot;
+#if defined(__LINUX__) || defined(__FREEBSD__)
+    char procfile[1024];
+    char linkfile[1024];
+    int linksize;
+#endif
+
+    /* First allow environment variable override */
+    spot = SDL_getenv("SDL_VIDEO_WAYLAND_WMCLASS");
+    if (spot) {
+        return SDL_strdup(spot);
+    } else {
+        /* Fallback to the "old" envvar */
+        spot = SDL_getenv("SDL_VIDEO_X11_WMCLASS");
+        if (spot) {
+            return SDL_strdup(spot);
+        }
+    }
+
+    /* Next look at the application's executable name */
+#if defined(__LINUX__) || defined(__FREEBSD__)
+#if defined(__LINUX__)
+    SDL_snprintf(procfile, SDL_arraysize(procfile), "/proc/%d/exe", getpid());
+#elif defined(__FREEBSD__)
+    SDL_snprintf(procfile, SDL_arraysize(procfile), "/proc/%d/file",
+                 getpid());
+#else
+#error Where can we find the executable name?
+#endif
+    linksize = readlink(procfile, linkfile, sizeof(linkfile) - 1);
+    if (linksize > 0) {
+        linkfile[linksize] = '\0';
+        spot = SDL_strrchr(linkfile, '/');
+        if (spot) {
+            return SDL_strdup(spot + 1);
+        } else {
+            return SDL_strdup(linkfile);
+        }
+    }
+#endif /* __LINUX__ || __FREEBSD__ */
+
+    /* Finally use the default we've used forever */
+    return SDL_strdup("SDL_App");
+}
+
+/* Wayland driver bootstrap functions */
+static int
+Wayland_Available(void)
+{
+    struct wl_display *display = NULL;
+    if (SDL_WAYLAND_LoadSymbols()) {
+        display = WAYLAND_wl_display_connect(NULL);
+        if (display != NULL) {
+            WAYLAND_wl_display_disconnect(display);
+        }
+        SDL_WAYLAND_UnloadSymbols();
+    }
+
+    return (display != NULL);
+}
+
+static void
+Wayland_DeleteDevice(SDL_VideoDevice *device)
+{
+    SDL_free(device);
+    SDL_WAYLAND_UnloadSymbols();
+}
+
+static SDL_VideoDevice *
+Wayland_CreateDevice(int devindex)
+{
+    SDL_VideoDevice *device;
+
+    if (!SDL_WAYLAND_LoadSymbols()) {
+        return NULL;
+    }
+
+    /* Initialize all variables that we clean on shutdown */
+    device = SDL_calloc(1, sizeof(SDL_VideoDevice));
+    if (!device) {
+        SDL_WAYLAND_UnloadSymbols();
+        SDL_OutOfMemory();
+        return NULL;
+    }
+
+    /* Set the function pointers */
+    device->VideoInit = Wayland_VideoInit;
+    device->VideoQuit = Wayland_VideoQuit;
+    device->SetDisplayMode = Wayland_SetDisplayMode;
+    device->GetDisplayModes = Wayland_GetDisplayModes;
+    device->GetWindowWMInfo = Wayland_GetWindowWMInfo;
+
+    device->PumpEvents = Wayland_PumpEvents;
+
+    device->GL_SwapWindow = Wayland_GLES_SwapWindow;
+    device->GL_GetSwapInterval = Wayland_GLES_GetSwapInterval;
+    device->GL_SetSwapInterval = Wayland_GLES_SetSwapInterval;
+    device->GL_MakeCurrent = Wayland_GLES_MakeCurrent;
+    device->GL_CreateContext = Wayland_GLES_CreateContext;
+    device->GL_LoadLibrary = Wayland_GLES_LoadLibrary;
+    device->GL_UnloadLibrary = Wayland_GLES_UnloadLibrary;
+    device->GL_GetProcAddress = Wayland_GLES_GetProcAddress;
+    device->GL_DeleteContext = Wayland_GLES_DeleteContext;
+
+    device->CreateSDLWindow = Wayland_CreateWindow;
+    device->ShowWindow = Wayland_ShowWindow;
+    device->SetWindowFullscreen = Wayland_SetWindowFullscreen;
+    device->MaximizeWindow = Wayland_MaximizeWindow;
+    device->RestoreWindow = Wayland_RestoreWindow;
+    device->SetWindowSize = Wayland_SetWindowSize;
+    device->SetWindowTitle = Wayland_SetWindowTitle;
+    device->DestroyWindow = Wayland_DestroyWindow;
+    device->SetWindowHitTest = Wayland_SetWindowHitTest;
+
+    device->SetClipboardText = Wayland_SetClipboardText;
+    device->GetClipboardText = Wayland_GetClipboardText;
+    device->HasClipboardText = Wayland_HasClipboardText;
+
+#if SDL_VIDEO_VULKAN
+    device->Vulkan_LoadLibrary = Wayland_Vulkan_LoadLibrary;
+    device->Vulkan_UnloadLibrary = Wayland_Vulkan_UnloadLibrary;
+    device->Vulkan_GetInstanceExtensions = Wayland_Vulkan_GetInstanceExtensions;
+    device->Vulkan_CreateSurface = Wayland_Vulkan_CreateSurface;
+#endif
+
+    device->free = Wayland_DeleteDevice;
+
+    return device;
+}
+
+VideoBootStrap Wayland_bootstrap = {
+    WAYLANDVID_DRIVER_NAME, "SDL Wayland video driver",
+    Wayland_Available, Wayland_CreateDevice
+};
+
+static void
+display_handle_geometry(void *data,
+                        struct wl_output *output,
+                        int x, int y,
+                        int physical_width,
+                        int physical_height,
+                        int subpixel,
+                        const char *make,
+                        const char *model,
+                        int transform)
+
+{
+    SDL_VideoDisplay *display = data;
+
+    display->name = SDL_strdup(model);
+    display->driverdata = output;
+}
+
+static void
+display_handle_mode(void *data,
+                    struct wl_output *output,
+                    uint32_t flags,
+                    int width,
+                    int height,
+                    int refresh)
+{
+    SDL_VideoDisplay *display = data;
+    SDL_DisplayMode mode;
+
+    SDL_zero(mode);
+    mode.format = SDL_PIXELFORMAT_RGB888;
+    mode.w = width;
+    mode.h = height;
+    mode.refresh_rate = refresh / 1000; // mHz to Hz
+    mode.driverdata = display->driverdata;
+    SDL_AddDisplayMode(display, &mode);
+
+    if (flags & WL_OUTPUT_MODE_CURRENT) {
+        display->current_mode = mode;
+        display->desktop_mode = mode;
+    }
+}
+
+static void
+display_handle_done(void *data,
+                    struct wl_output *output)
+{
+    SDL_VideoDisplay *display = data;
+    SDL_AddVideoDisplay(display);
+    SDL_free(display->name);
+    SDL_free(display);
+}
+
+static void
+display_handle_scale(void *data,
+                     struct wl_output *output,
+                     int32_t factor)
+{
+    // TODO: do HiDPI stuff.
+}
+
+static const struct wl_output_listener output_listener = {
+    display_handle_geometry,
+    display_handle_mode,
+    display_handle_done,
+    display_handle_scale
+};
+
+static void
+Wayland_add_display(SDL_VideoData *d, uint32_t id)
+{
+    struct wl_output *output;
+    SDL_VideoDisplay *display = SDL_malloc(sizeof *display);
+    if (!display) {
+        SDL_OutOfMemory();
+        return;
+    }
+    SDL_zero(*display);
+
+    output = wl_registry_bind(d->registry, id, &wl_output_interface, 2);
+    if (!output) {
+        SDL_SetError("Failed to retrieve output.");
+        SDL_free(display);
+        return;
+    }
+
+    wl_output_add_listener(output, &output_listener, display);
+}
+
+#ifdef SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH
+static void
+windowmanager_hints(void *data, struct qt_windowmanager *qt_windowmanager,
+        int32_t show_is_fullscreen)
+{
+}
+
+static void
+windowmanager_quit(void *data, struct qt_windowmanager *qt_windowmanager)
+{
+    SDL_SendQuit();
+}
+
+static const struct qt_windowmanager_listener windowmanager_listener = {
+    windowmanager_hints,
+    windowmanager_quit,
+};
+#endif /* SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH */
+
+
+static void
+handle_ping_zxdg_shell(void *data, struct zxdg_shell_v6 *zxdg, uint32_t serial)
+{
+    zxdg_shell_v6_pong(zxdg, serial);
+}
+
+static const struct zxdg_shell_v6_listener shell_listener_zxdg = {
+    handle_ping_zxdg_shell
+};
+
+
+static void
+handle_ping_xdg_wm_base(void *data, struct xdg_wm_base *xdg, uint32_t serial)
+{
+    xdg_wm_base_pong(xdg, serial);
+}
+
+static const struct xdg_wm_base_listener shell_listener_xdg = {
+    handle_ping_xdg_wm_base
+};
+
+
+static void
+display_handle_global(void *data, struct wl_registry *registry, uint32_t id,
+                      const char *interface, uint32_t version)
+{
+    SDL_VideoData *d = data;
+
+    if (strcmp(interface, "wl_compositor") == 0) {
+        d->compositor = wl_registry_bind(d->registry, id, &wl_compositor_interface, 1);
+    } else if (strcmp(interface, "wl_output") == 0) {
+        Wayland_add_display(d, id);
+    } else if (strcmp(interface, "wl_seat") == 0) {
+        Wayland_display_add_input(d, id);
+    } else if (strcmp(interface, "xdg_wm_base") == 0) {
+        d->shell.xdg = wl_registry_bind(d->registry, id, &xdg_wm_base_interface, 1);
+        xdg_wm_base_add_listener(d->shell.xdg, &shell_listener_xdg, NULL);
+    } else if (strcmp(interface, "zxdg_shell_v6") == 0) {
+        d->shell.zxdg = wl_registry_bind(d->registry, id, &zxdg_shell_v6_interface, 1);
+        zxdg_shell_v6_add_listener(d->shell.zxdg, &shell_listener_zxdg, NULL);
+    } else if (strcmp(interface, "wl_shell") == 0) {
+        d->shell.wl = wl_registry_bind(d->registry, id, &wl_shell_interface, 1);
+    } else if (strcmp(interface, "wl_shm") == 0) {
+        d->shm = wl_registry_bind(registry, id, &wl_shm_interface, 1);
+        d->cursor_theme = WAYLAND_wl_cursor_theme_load(NULL, 32, d->shm);
+    } else if (strcmp(interface, "zwp_relative_pointer_manager_v1") == 0) {
+        Wayland_display_add_relative_pointer_manager(d, id);
+    } else if (strcmp(interface, "zwp_pointer_constraints_v1") == 0) {
+        Wayland_display_add_pointer_constraints(d, id);
+    } else if (strcmp(interface, "wl_data_device_manager") == 0) {
+        d->data_device_manager = wl_registry_bind(d->registry, id, &wl_data_device_manager_interface, 3);
+
+#ifdef SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH
+    } else if (strcmp(interface, "qt_touch_extension") == 0) {
+        Wayland_touch_create(d, id);
+    } else if (strcmp(interface, "qt_surface_extension") == 0) {
+        d->surface_extension = wl_registry_bind(registry, id,
+                &qt_surface_extension_interface, 1);
+    } else if (strcmp(interface, "qt_windowmanager") == 0) {
+        d->windowmanager = wl_registry_bind(registry, id,
+                &qt_windowmanager_interface, 1);
+        qt_windowmanager_add_listener(d->windowmanager, &windowmanager_listener, d);
+#endif /* SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH */
+    }
+}
+
+static const struct wl_registry_listener registry_listener = {
+    display_handle_global,
+    NULL, /* global_remove */
+};
+
+int
+Wayland_VideoInit(_THIS)
+{
+    SDL_VideoData *data = SDL_malloc(sizeof *data);
+    if (data == NULL)
+        return SDL_OutOfMemory();
+    memset(data, 0, sizeof *data);
+
+    _this->driverdata = data;
+
+    data->xkb_context = WAYLAND_xkb_context_new(0);
+    if (!data->xkb_context) {
+        return SDL_SetError("Failed to create XKB context");
+    }
+
+    data->display = WAYLAND_wl_display_connect(NULL);
+    if (data->display == NULL) {
+        return SDL_SetError("Failed to connect to a Wayland display");
+    }
+
+    data->registry = wl_display_get_registry(data->display);
+    if (data->registry == NULL) {
+        return SDL_SetError("Failed to get the Wayland registry");
+    }
+
+    wl_registry_add_listener(data->registry, &registry_listener, data);
+
+    // First roundtrip to receive all registry objects.
+    WAYLAND_wl_display_roundtrip(data->display);
+
+    // Second roundtrip to receive all output events.
+    WAYLAND_wl_display_roundtrip(data->display);
+
+    Wayland_InitMouse();
+
+    /* Get the surface class name, usually the name of the application */
+    data->classname = get_classname();
+
+    WAYLAND_wl_display_flush(data->display);
+
+    return 0;
+}
+
+static void
+Wayland_GetDisplayModes(_THIS, SDL_VideoDisplay *sdl_display)
+{
+    // Nothing to do here, everything was already done in the wl_output
+    // callbacks.
+}
+
+static int
+Wayland_SetDisplayMode(_THIS, SDL_VideoDisplay *display, SDL_DisplayMode *mode)
+{
+    return SDL_Unsupported();
+}
+
+void
+Wayland_VideoQuit(_THIS)
+{
+    SDL_VideoData *data = _this->driverdata;
+    int i, j;
+
+    Wayland_FiniMouse ();
+
+    for (i = 0; i < _this->num_displays; ++i) {
+        SDL_VideoDisplay *display = &_this->displays[i];
+        wl_output_destroy(display->driverdata);
+        display->driverdata = NULL;
+
+        for (j = display->num_display_modes; j--;) {
+            display->display_modes[j].driverdata = NULL;
+        }
+        display->desktop_mode.driverdata = NULL;
+    }
+
+    Wayland_display_destroy_input(data);
+    Wayland_display_destroy_pointer_constraints(data);
+    Wayland_display_destroy_relative_pointer_manager(data);
+
+    if (data->xkb_context) {
+        WAYLAND_xkb_context_unref(data->xkb_context);
+        data->xkb_context = NULL;
+    }
+#ifdef SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH
+    if (data->windowmanager)
+        qt_windowmanager_destroy(data->windowmanager);
+
+    if (data->surface_extension)
+        qt_surface_extension_destroy(data->surface_extension);
+
+    Wayland_touch_destroy(data);
+#endif /* SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH */
+
+    if (data->shm)
+        wl_shm_destroy(data->shm);
+
+    if (data->cursor_theme)
+        WAYLAND_wl_cursor_theme_destroy(data->cursor_theme);
+
+    if (data->shell.wl)
+        wl_shell_destroy(data->shell.wl);
+
+    if (data->shell.xdg)
+        xdg_wm_base_destroy(data->shell.xdg);
+
+    if (data->shell.zxdg)
+        zxdg_shell_v6_destroy(data->shell.zxdg);
+
+    if (data->compositor)
+        wl_compositor_destroy(data->compositor);
+
+    if (data->registry)
+        wl_registry_destroy(data->registry);
+
+    if (data->display) {
+        WAYLAND_wl_display_flush(data->display);
+        WAYLAND_wl_display_disconnect(data->display);
+    }
+
+    SDL_free(data->classname);
+    SDL_free(data);
+    _this->driverdata = NULL;
+}
+
+#endif /* SDL_VIDEO_DRIVER_WAYLAND */
+
+/* vi: set ts=4 sw=4 expandtab: */
diff --git a/source/3rd-party/SDL2/src/video/wayland/SDL_waylandvideo.h b/source/3rd-party/SDL2/src/video/wayland/SDL_waylandvideo.h
new file mode 100644
index 0000000..c16c0bd
--- /dev/null
+++ b/source/3rd-party/SDL2/src/video/wayland/SDL_waylandvideo.h
@@ -0,0 +1,85 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+#include "../../SDL_internal.h"
+
+#ifndef SDL_waylandvideo_h_
+#define SDL_waylandvideo_h_
+
+
+/*
+!!! FIXME: xdg_wm_base is the stable replacement for zxdg_shell_v6. While it's
+!!! FIXME:  harmless to leave it here, consider deleting the obsolete codepath
+!!! FIXME:  soon, since Wayland (with xdg_wm_base) will probably be mainline
+!!! FIXME:  by the time people are relying on this SDL target. It's available
+!!! FIXME:  in Ubuntu 18.04 (and other distros).
+*/
+
+
+#include <EGL/egl.h>
+#include "wayland-util.h"
+
+struct xkb_context;
+struct SDL_WaylandInput;
+
+#ifdef SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH
+struct SDL_WaylandTouch;
+struct qt_surface_extension;
+struct qt_windowmanager;
+#endif /* SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH */
+
+typedef struct {
+    struct wl_display *display;
+    struct wl_registry *registry;
+    struct wl_compositor *compositor;
+    struct wl_shm *shm;
+    struct wl_cursor_theme *cursor_theme;
+    struct wl_pointer *pointer;
+    struct {
+        struct xdg_wm_base *xdg;
+        struct zxdg_shell_v6 *zxdg;
+        struct wl_shell *wl;
+    } shell;
+    struct zwp_relative_pointer_manager_v1 *relative_pointer_manager;
+    struct zwp_pointer_constraints_v1 *pointer_constraints;
+    struct wl_data_device_manager *data_device_manager;
+
+    EGLDisplay edpy;
+    EGLContext context;
+    EGLConfig econf;
+
+    struct xkb_context *xkb_context;
+    struct SDL_WaylandInput *input;
+
+#ifdef SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH
+    struct SDL_WaylandTouch *touch;
+    struct qt_surface_extension *surface_extension;
+    struct qt_windowmanager *windowmanager;
+#endif /* SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH */
+
+    char *classname;
+
+    int relative_mouse_mode;
+} SDL_VideoData;
+
+#endif /* SDL_waylandvideo_h_ */
+
+/* vi: set ts=4 sw=4 expandtab: */
diff --git a/source/3rd-party/SDL2/src/video/wayland/SDL_waylandvulkan.c b/source/3rd-party/SDL2/src/video/wayland/SDL_waylandvulkan.c
new file mode 100644
index 0000000..d67472c
--- /dev/null
+++ b/source/3rd-party/SDL2/src/video/wayland/SDL_waylandvulkan.c
@@ -0,0 +1,176 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+/*
+ * @author Mark Callow, www.edgewise-consulting.com. Based on Jacob Lifshay's
+ * SDL_x11vulkan.c.
+ */
+
+#include "../../SDL_internal.h"
+
+#if SDL_VIDEO_VULKAN && SDL_VIDEO_DRIVER_WAYLAND
+
+#include "SDL_waylandvideo.h"
+#include "SDL_waylandwindow.h"
+#include "SDL_assert.h"
+
+#include "SDL_loadso.h"
+#include "SDL_waylandvulkan.h"
+#include "SDL_syswm.h"
+
+int Wayland_Vulkan_LoadLibrary(_THIS, const char *path)
+{
+    VkExtensionProperties *extensions = NULL;
+    Uint32 i, extensionCount = 0;
+    SDL_bool hasSurfaceExtension = SDL_FALSE;
+    SDL_bool hasWaylandSurfaceExtension = SDL_FALSE;
+    PFN_vkGetInstanceProcAddr vkGetInstanceProcAddr = NULL;
+    if(_this->vulkan_config.loader_handle)
+        return SDL_SetError("Vulkan already loaded");
+
+    /* Load the Vulkan loader library */
+    if(!path)
+        path = SDL_getenv("SDL_VULKAN_LIBRARY");
+    if(!path)
+        path = "libvulkan.so.1";
+    _this->vulkan_config.loader_handle = SDL_LoadObject(path);
+    if(!_this->vulkan_config.loader_handle)
+        return -1;
+    SDL_strlcpy(_this->vulkan_config.loader_path, path,
+                SDL_arraysize(_this->vulkan_config.loader_path));
+    vkGetInstanceProcAddr = (PFN_vkGetInstanceProcAddr)SDL_LoadFunction(
+        _this->vulkan_config.loader_handle, "vkGetInstanceProcAddr");
+    if(!vkGetInstanceProcAddr)
+        goto fail;
+    _this->vulkan_config.vkGetInstanceProcAddr = (void *)vkGetInstanceProcAddr;
+    _this->vulkan_config.vkEnumerateInstanceExtensionProperties =
+        (void *)((PFN_vkGetInstanceProcAddr)_this->vulkan_config.vkGetInstanceProcAddr)(
+            VK_NULL_HANDLE, "vkEnumerateInstanceExtensionProperties");
+    if(!_this->vulkan_config.vkEnumerateInstanceExtensionProperties)
+        goto fail;
+    extensions = SDL_Vulkan_CreateInstanceExtensionsList(
+        (PFN_vkEnumerateInstanceExtensionProperties)
+            _this->vulkan_config.vkEnumerateInstanceExtensionProperties,
+        &extensionCount);
+    if(!extensions)
+        goto fail;
+    for(i = 0; i < extensionCount; i++)
+    {
+        if(SDL_strcmp(VK_KHR_SURFACE_EXTENSION_NAME, extensions[i].extensionName) == 0)
+            hasSurfaceExtension = SDL_TRUE;
+        else if(SDL_strcmp(VK_KHR_WAYLAND_SURFACE_EXTENSION_NAME, extensions[i].extensionName) == 0)
+            hasWaylandSurfaceExtension = SDL_TRUE;
+    }
+    SDL_free(extensions);
+    if(!hasSurfaceExtension)
+    {
+        SDL_SetError("Installed Vulkan doesn't implement the "
+                     VK_KHR_SURFACE_EXTENSION_NAME " extension");
+        goto fail;
+    }
+    else if(!hasWaylandSurfaceExtension)
+    {
+        SDL_SetError("Installed Vulkan doesn't implement the "
+                     VK_KHR_WAYLAND_SURFACE_EXTENSION_NAME "extension");
+        goto fail;
+    }
+    return 0;
+
+fail:
+    SDL_UnloadObject(_this->vulkan_config.loader_handle);
+    _this->vulkan_config.loader_handle = NULL;
+    return -1;
+}
+
+void Wayland_Vulkan_UnloadLibrary(_THIS)
+{
+    if(_this->vulkan_config.loader_handle)
+    {
+        SDL_UnloadObject(_this->vulkan_config.loader_handle);
+        _this->vulkan_config.loader_handle = NULL;
+    }
+}
+
+SDL_bool Wayland_Vulkan_GetInstanceExtensions(_THIS,
+                                          SDL_Window *window,
+                                          unsigned *count,
+                                          const char **names)
+{
+    static const char *const extensionsForWayland[] = {
+        VK_KHR_SURFACE_EXTENSION_NAME, VK_KHR_WAYLAND_SURFACE_EXTENSION_NAME
+    };
+    if(!_this->vulkan_config.loader_handle)
+    {
+        SDL_SetError("Vulkan is not loaded");
+        return SDL_FALSE;
+    }
+    return SDL_Vulkan_GetInstanceExtensions_Helper(
+            count, names, SDL_arraysize(extensionsForWayland),
+            extensionsForWayland);
+}
+
+SDL_bool Wayland_Vulkan_CreateSurface(_THIS,
+                                  SDL_Window *window,
+                                  VkInstance instance,
+                                  VkSurfaceKHR *surface)
+{
+    SDL_WindowData *windowData = (SDL_WindowData *)window->driverdata;
+    PFN_vkGetInstanceProcAddr vkGetInstanceProcAddr =
+        (PFN_vkGetInstanceProcAddr)_this->vulkan_config.vkGetInstanceProcAddr;
+    PFN_vkCreateWaylandSurfaceKHR vkCreateWaylandSurfaceKHR =
+        (PFN_vkCreateWaylandSurfaceKHR)vkGetInstanceProcAddr(
+                                            (VkInstance)instance,
+                                            "vkCreateWaylandSurfaceKHR");
+    VkWaylandSurfaceCreateInfoKHR createInfo;
+    VkResult result;
+
+    if(!_this->vulkan_config.loader_handle)
+    {
+        SDL_SetError("Vulkan is not loaded");
+        return SDL_FALSE;
+    }
+
+    if(!vkCreateWaylandSurfaceKHR)
+    {
+        SDL_SetError(VK_KHR_WAYLAND_SURFACE_EXTENSION_NAME
+                     " extension is not enabled in the Vulkan instance.");
+        return SDL_FALSE;
+    }
+    SDL_zero(createInfo);
+    createInfo.sType = VK_STRUCTURE_TYPE_WAYLAND_SURFACE_CREATE_INFO_KHR;
+    createInfo.pNext = NULL;
+    createInfo.flags = 0;
+    createInfo.display = windowData->waylandData->display;
+    createInfo.surface =  windowData->surface;
+    result = vkCreateWaylandSurfaceKHR(instance, &createInfo,
+                                       NULL, surface);
+    if(result != VK_SUCCESS)
+    {
+        SDL_SetError("vkCreateWaylandSurfaceKHR failed: %s",
+                     SDL_Vulkan_GetResultString(result));
+        return SDL_FALSE;
+    }
+    return SDL_TRUE;
+}
+
+#endif
+
+/* vim: set ts=4 sw=4 expandtab: */
diff --git a/source/3rd-party/SDL2/src/video/wayland/SDL_waylandvulkan.h b/source/3rd-party/SDL2/src/video/wayland/SDL_waylandvulkan.h
new file mode 100644
index 0000000..5ad3a46
--- /dev/null
+++ b/source/3rd-party/SDL2/src/video/wayland/SDL_waylandvulkan.h
@@ -0,0 +1,52 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+/*
+ * @author Mark Callow, www.edgewise-consulting.com. Based on Jacob Lifshay's
+ * SDL_x11vulkan.h.
+ */
+
+#include "../../SDL_internal.h"
+
+#ifndef SDL_waylandvulkan_h_
+#define SDL_waylandvulkan_h_
+
+#include "../SDL_vulkan_internal.h"
+#include "../SDL_sysvideo.h"
+
+#if SDL_VIDEO_VULKAN && SDL_VIDEO_DRIVER_WAYLAND
+
+int Wayland_Vulkan_LoadLibrary(_THIS, const char *path);
+void Wayland_Vulkan_UnloadLibrary(_THIS);
+SDL_bool Wayland_Vulkan_GetInstanceExtensions(_THIS,
+                                          SDL_Window *window,
+                                          unsigned *count,
+                                          const char **names);
+SDL_bool Wayland_Vulkan_CreateSurface(_THIS,
+                                  SDL_Window *window,
+                                  VkInstance instance,
+                                  VkSurfaceKHR *surface);
+
+#endif
+
+#endif /* SDL_waylandvulkan_h_ */
+
+/* vi: set ts=4 sw=4 expandtab: */
diff --git a/source/3rd-party/SDL2/src/video/wayland/SDL_waylandwindow.c b/source/3rd-party/SDL2/src/video/wayland/SDL_waylandwindow.c
new file mode 100644
index 0000000..aa72991
--- /dev/null
+++ b/source/3rd-party/SDL2/src/video/wayland/SDL_waylandwindow.c
@@ -0,0 +1,676 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+#include "../../SDL_internal.h"
+
+#if SDL_VIDEO_DRIVER_WAYLAND && SDL_VIDEO_OPENGL_EGL
+
+#include "../SDL_sysvideo.h"
+#include "../../events/SDL_windowevents_c.h"
+#include "../SDL_egl_c.h"
+#include "SDL_waylandevents_c.h"
+#include "SDL_waylandwindow.h"
+#include "SDL_waylandvideo.h"
+#include "SDL_waylandtouch.h"
+#include "SDL_waylanddyn.h"
+#include "SDL_hints.h"
+
+#include "xdg-shell-client-protocol.h"
+#include "xdg-shell-unstable-v6-client-protocol.h"
+
+/* On modern desktops, we probably will use the xdg-shell protocol instead
+   of wl_shell, but wl_shell might be useful on older Wayland installs that
+   don't have the newer protocol, or embedded things that don't have a full
+   window manager. */
+
+static void
+handle_ping_wl_shell_surface(void *data, struct wl_shell_surface *shell_surface,
+            uint32_t serial)
+{
+    wl_shell_surface_pong(shell_surface, serial);
+}
+
+static void
+handle_configure_wl_shell_surface(void *data, struct wl_shell_surface *shell_surface,
+                 uint32_t edges, int32_t width, int32_t height)
+{
+    SDL_WindowData *wind = (SDL_WindowData *)data;
+    SDL_Window *window = wind->sdlwindow;
+    struct wl_region *region;
+
+    /* wl_shell_surface spec states that this is a suggestion.
+       Ignore if less than or greater than max/min size. */
+
+    if (width == 0 || height == 0) {
+        return;
+    }
+
+    if (!(window->flags & SDL_WINDOW_FULLSCREEN)) {
+        if ((window->flags & SDL_WINDOW_RESIZABLE)) {
+            if (window->max_w > 0) {
+                width = SDL_min(width, window->max_w);
+            } 
+            width = SDL_max(width, window->min_w);
+
+            if (window->max_h > 0) {
+                height = SDL_min(height, window->max_h);
+            }
+            height = SDL_max(height, window->min_h);
+        } else {
+            return;
+        }
+    }
+
+    WAYLAND_wl_egl_window_resize(wind->egl_window, width, height, 0, 0);
+    region = wl_compositor_create_region(wind->waylandData->compositor);
+    wl_region_add(region, 0, 0, width, height);
+    wl_surface_set_opaque_region(wind->surface, region);
+    wl_region_destroy(region);
+
+    SDL_SendWindowEvent(window, SDL_WINDOWEVENT_RESIZED, width, height);
+    window->w = width;
+    window->h = height;
+}
+
+static void
+handle_popup_done_wl_shell_surface(void *data, struct wl_shell_surface *shell_surface)
+{
+}
+
+static const struct wl_shell_surface_listener shell_surface_listener_wl = {
+    handle_ping_wl_shell_surface,
+    handle_configure_wl_shell_surface,
+    handle_popup_done_wl_shell_surface
+};
+
+
+
+
+static void
+handle_configure_zxdg_shell_surface(void *data, struct zxdg_surface_v6 *zxdg, uint32_t serial)
+{
+    SDL_WindowData *wind = (SDL_WindowData *)data;
+    SDL_Window *window = wind->sdlwindow;
+    struct wl_region *region;
+
+    wind->shell_surface.zxdg.initial_configure_seen = SDL_TRUE;
+
+    WAYLAND_wl_egl_window_resize(wind->egl_window, window->w, window->h, 0, 0);
+
+    region = wl_compositor_create_region(wind->waylandData->compositor);
+    wl_region_add(region, 0, 0, window->w, window->h);
+    wl_surface_set_opaque_region(wind->surface, region);
+    wl_region_destroy(region);
+    zxdg_surface_v6_ack_configure(zxdg, serial);
+}
+
+static const struct zxdg_surface_v6_listener shell_surface_listener_zxdg = {
+    handle_configure_zxdg_shell_surface
+};
+
+
+static void
+handle_configure_zxdg_toplevel(void *data,
+              struct zxdg_toplevel_v6 *zxdg_toplevel_v6,
+              int32_t width,
+              int32_t height,
+              struct wl_array *states)
+{
+    SDL_WindowData *wind = (SDL_WindowData *)data;
+    SDL_Window *window = wind->sdlwindow;
+
+    /* wl_shell_surface spec states that this is a suggestion.
+       Ignore if less than or greater than max/min size. */
+
+    if (width == 0 || height == 0) {
+        return;
+    }
+
+    if (!(window->flags & SDL_WINDOW_FULLSCREEN)) {
+        if ((window->flags & SDL_WINDOW_RESIZABLE)) {
+            if (window->max_w > 0) {
+                width = SDL_min(width, window->max_w);
+            } 
+            width = SDL_max(width, window->min_w);
+
+            if (window->max_h > 0) {
+                height = SDL_min(height, window->max_h);
+            }
+            height = SDL_max(height, window->min_h);
+        } else {
+            return;
+        }
+    }
+
+    SDL_SendWindowEvent(window, SDL_WINDOWEVENT_RESIZED, width, height);
+    window->w = width;
+    window->h = height;
+}
+
+static void
+handle_close_zxdg_toplevel(void *data, struct zxdg_toplevel_v6 *zxdg_toplevel_v6)
+{
+    SDL_WindowData *window = (SDL_WindowData *)data;
+    SDL_SendWindowEvent(window->sdlwindow, SDL_WINDOWEVENT_CLOSE, 0, 0);
+}
+
+static const struct zxdg_toplevel_v6_listener toplevel_listener_zxdg = {
+    handle_configure_zxdg_toplevel,
+    handle_close_zxdg_toplevel
+};
+
+
+
+static void
+handle_configure_xdg_shell_surface(void *data, struct xdg_surface *xdg, uint32_t serial)
+{
+    SDL_WindowData *wind = (SDL_WindowData *)data;
+    SDL_Window *window = wind->sdlwindow;
+    struct wl_region *region;
+
+    wind->shell_surface.xdg.initial_configure_seen = SDL_TRUE;
+
+    WAYLAND_wl_egl_window_resize(wind->egl_window, window->w, window->h, 0, 0);
+
+    region = wl_compositor_create_region(wind->waylandData->compositor);
+    wl_region_add(region, 0, 0, window->w, window->h);
+    wl_surface_set_opaque_region(wind->surface, region);
+    wl_region_destroy(region);
+    xdg_surface_ack_configure(xdg, serial);
+}
+
+static const struct xdg_surface_listener shell_surface_listener_xdg = {
+    handle_configure_xdg_shell_surface
+};
+
+
+static void
+handle_configure_xdg_toplevel(void *data,
+              struct xdg_toplevel *xdg_toplevel,
+              int32_t width,
+              int32_t height,
+              struct wl_array *states)
+{
+    SDL_WindowData *wind = (SDL_WindowData *)data;
+    SDL_Window *window = wind->sdlwindow;
+
+    /* wl_shell_surface spec states that this is a suggestion.
+       Ignore if less than or greater than max/min size. */
+
+    if (width == 0 || height == 0) {
+        return;
+    }
+
+    if (!(window->flags & SDL_WINDOW_FULLSCREEN)) {
+        if ((window->flags & SDL_WINDOW_RESIZABLE)) {
+            if (window->max_w > 0) {
+                width = SDL_min(width, window->max_w);
+            } 
+            width = SDL_max(width, window->min_w);
+
+            if (window->max_h > 0) {
+                height = SDL_min(height, window->max_h);
+            }
+            height = SDL_max(height, window->min_h);
+        } else {
+            return;
+        }
+    }
+
+    if (width == window->w && height == window->h) {
+        return;
+    }
+
+    SDL_SendWindowEvent(window, SDL_WINDOWEVENT_RESIZED, width, height);
+    window->w = width;
+    window->h = height;
+}
+
+static void
+handle_close_xdg_toplevel(void *data, struct xdg_toplevel *xdg_toplevel)
+{
+    SDL_WindowData *window = (SDL_WindowData *)data;
+    SDL_SendWindowEvent(window->sdlwindow, SDL_WINDOWEVENT_CLOSE, 0, 0);
+}
+
+static const struct xdg_toplevel_listener toplevel_listener_xdg = {
+    handle_configure_xdg_toplevel,
+    handle_close_xdg_toplevel
+};
+
+
+
+
+#ifdef SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH
+static void
+handle_onscreen_visibility(void *data,
+        struct qt_extended_surface *qt_extended_surface, int32_t visible)
+{
+}
+
+static void
+handle_set_generic_property(void *data,
+        struct qt_extended_surface *qt_extended_surface, const char *name,
+        struct wl_array *value)
+{
+}
+
+static void
+handle_close(void *data, struct qt_extended_surface *qt_extended_surface)
+{
+    SDL_WindowData *window = (SDL_WindowData *)data;
+    SDL_SendWindowEvent(window->sdlwindow, SDL_WINDOWEVENT_CLOSE, 0, 0);
+}
+
+static const struct qt_extended_surface_listener extended_surface_listener = {
+    handle_onscreen_visibility,
+    handle_set_generic_property,
+    handle_close,
+};
+#endif /* SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH */
+
+SDL_bool
+Wayland_GetWindowWMInfo(_THIS, SDL_Window * window, SDL_SysWMinfo * info)
+{
+    SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
+    const Uint32 version = ((((Uint32) info->version.major) * 1000000) +
+                            (((Uint32) info->version.minor) * 10000) +
+                            (((Uint32) info->version.patch)));
+
+    /* Before 2.0.6, it was possible to build an SDL with Wayland support
+       (SDL_SysWMinfo will be large enough to hold Wayland info), but build
+       your app against SDL headers that didn't have Wayland support
+       (SDL_SysWMinfo could be smaller than Wayland needs. This would lead
+       to an app properly using SDL_GetWindowWMInfo() but we'd accidentally
+       overflow memory on the stack or heap. To protect against this, we've
+       padded out the struct unconditionally in the headers and Wayland will
+       just return an error for older apps using this function. Those apps
+       will need to be recompiled against newer headers or not use Wayland,
+       maybe by forcing SDL_VIDEODRIVER=x11. */
+    if (version < 2000006) {
+        info->subsystem = SDL_SYSWM_UNKNOWN;
+        SDL_SetError("Version must be 2.0.6 or newer");
+        return SDL_FALSE;
+    }
+
+    info->info.wl.display = data->waylandData->display;
+    info->info.wl.surface = data->surface;
+    info->info.wl.shell_surface = data->shell_surface.wl;
+    info->subsystem = SDL_SYSWM_WAYLAND;
+
+    return SDL_TRUE;
+}
+
+int
+Wayland_SetWindowHitTest(SDL_Window *window, SDL_bool enabled)
+{
+    return 0;  /* just succeed, the real work is done elsewhere. */
+}
+
+static void
+SetFullscreen(_THIS, SDL_Window * window, struct wl_output *output)
+{
+    const SDL_VideoData *viddata = (const SDL_VideoData *) _this->driverdata;
+    SDL_WindowData *wind = window->driverdata;
+
+    if (viddata->shell.xdg) {
+        if (output) {
+            xdg_toplevel_set_fullscreen(wind->shell_surface.xdg.roleobj.toplevel, output);
+        } else {
+            xdg_toplevel_unset_fullscreen(wind->shell_surface.xdg.roleobj.toplevel);
+        }
+    } else if (viddata->shell.zxdg) {
+        if (output) {
+            zxdg_toplevel_v6_set_fullscreen(wind->shell_surface.zxdg.roleobj.toplevel, output);
+        } else {
+            zxdg_toplevel_v6_unset_fullscreen(wind->shell_surface.zxdg.roleobj.toplevel);
+        }
+    } else {
+        if (output) {
+            wl_shell_surface_set_fullscreen(wind->shell_surface.wl,
+                                            WL_SHELL_SURFACE_FULLSCREEN_METHOD_DEFAULT,
+                                            0, output);
+        } else {
+            wl_shell_surface_set_toplevel(wind->shell_surface.wl);
+        }
+    }
+
+    WAYLAND_wl_display_flush( ((SDL_VideoData*)_this->driverdata)->display );
+}
+
+void Wayland_ShowWindow(_THIS, SDL_Window *window)
+{
+    struct wl_output *output = (struct wl_output *) window->fullscreen_mode.driverdata;
+    SetFullscreen(_this, window, (window->flags & SDL_WINDOW_FULLSCREEN) ? output : NULL);
+}
+
+#ifdef SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH
+static void SDLCALL
+QtExtendedSurface_OnHintChanged(void *userdata, const char *name,
+        const char *oldValue, const char *newValue)
+{
+    struct qt_extended_surface *qt_extended_surface = userdata;
+
+    if (name == NULL) {
+        return;
+    }
+
+    if (strcmp(name, SDL_HINT_QTWAYLAND_CONTENT_ORIENTATION) == 0) {
+        int32_t orientation = QT_EXTENDED_SURFACE_ORIENTATION_PRIMARYORIENTATION;
+
+        if (newValue != NULL) {
+            if (strcmp(newValue, "portrait") == 0) {
+                orientation = QT_EXTENDED_SURFACE_ORIENTATION_PORTRAITORIENTATION;
+            } else if (strcmp(newValue, "landscape") == 0) {
+                orientation = QT_EXTENDED_SURFACE_ORIENTATION_LANDSCAPEORIENTATION;
+            } else if (strcmp(newValue, "inverted-portrait") == 0) {
+                orientation = QT_EXTENDED_SURFACE_ORIENTATION_INVERTEDPORTRAITORIENTATION;
+            } else if (strcmp(newValue, "inverted-landscape") == 0) {
+                orientation = QT_EXTENDED_SURFACE_ORIENTATION_INVERTEDLANDSCAPEORIENTATION;
+            }
+        }
+
+        qt_extended_surface_set_content_orientation(qt_extended_surface, orientation);
+    } else if (strcmp(name, SDL_HINT_QTWAYLAND_WINDOW_FLAGS) == 0) {
+        uint32_t flags = 0;
+
+        if (newValue != NULL) {
+            char *tmp = strdup(newValue);
+            char *saveptr = NULL;
+
+            char *flag = strtok_r(tmp, " ", &saveptr);
+            while (flag) {
+                if (strcmp(flag, "OverridesSystemGestures") == 0) {
+                    flags |= QT_EXTENDED_SURFACE_WINDOWFLAG_OVERRIDESSYSTEMGESTURES;
+                } else if (strcmp(flag, "StaysOnTop") == 0) {
+                    flags |= QT_EXTENDED_SURFACE_WINDOWFLAG_STAYSONTOP;
+                } else if (strcmp(flag, "BypassWindowManager") == 0) {
+                    // See https://github.com/qtproject/qtwayland/commit/fb4267103d
+                    flags |= 4 /* QT_EXTENDED_SURFACE_WINDOWFLAG_BYPASSWINDOWMANAGER */;
+                }
+
+                flag = strtok_r(NULL, " ", &saveptr);
+            }
+
+            free(tmp);
+        }
+
+        qt_extended_surface_set_window_flags(qt_extended_surface, flags);
+    }
+}
+
+static void QtExtendedSurface_Subscribe(struct qt_extended_surface *surface, const char *name)
+{
+    SDL_AddHintCallback(name, QtExtendedSurface_OnHintChanged, surface);
+}
+
+static void QtExtendedSurface_Unsubscribe(struct qt_extended_surface *surface, const char *name)
+{
+    SDL_DelHintCallback(name, QtExtendedSurface_OnHintChanged, surface);
+}
+#endif /* SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH */
+
+void
+Wayland_SetWindowFullscreen(_THIS, SDL_Window * window,
+                            SDL_VideoDisplay * _display, SDL_bool fullscreen)
+{
+    struct wl_output *output = (struct wl_output *) _display->driverdata;
+    SetFullscreen(_this, window, fullscreen ? output : NULL);
+}
+
+void
+Wayland_RestoreWindow(_THIS, SDL_Window * window)
+{
+    SDL_WindowData *wind = window->driverdata;
+    const SDL_VideoData *viddata = (const SDL_VideoData *) _this->driverdata;
+
+    if (viddata->shell.xdg) {
+    } else if (viddata->shell.zxdg) {
+    } else {
+        wl_shell_surface_set_toplevel(wind->shell_surface.wl);
+    }
+
+    WAYLAND_wl_display_flush( ((SDL_VideoData*)_this->driverdata)->display );
+}
+
+void
+Wayland_MaximizeWindow(_THIS, SDL_Window * window)
+{
+    SDL_WindowData *wind = window->driverdata;
+    SDL_VideoData *viddata = (SDL_VideoData *) _this->driverdata;
+
+    if (viddata->shell.xdg) {
+        xdg_toplevel_set_maximized(wind->shell_surface.xdg.roleobj.toplevel);
+    } else if (viddata->shell.zxdg) {
+        zxdg_toplevel_v6_set_maximized(wind->shell_surface.zxdg.roleobj.toplevel);
+    } else {
+        wl_shell_surface_set_maximized(wind->shell_surface.wl, NULL);
+    }
+
+    WAYLAND_wl_display_flush( viddata->display );
+}
+
+int Wayland_CreateWindow(_THIS, SDL_Window *window)
+{
+    SDL_WindowData *data;
+    SDL_VideoData *c;
+    struct wl_region *region;
+
+    data = calloc(1, sizeof *data);
+    if (data == NULL)
+        return SDL_OutOfMemory();
+
+    c = _this->driverdata;
+    window->driverdata = data;
+
+    if (!(window->flags & SDL_WINDOW_OPENGL)) {
+        SDL_GL_LoadLibrary(NULL);
+        window->flags |= SDL_WINDOW_OPENGL;
+    }
+
+    if (window->x == SDL_WINDOWPOS_UNDEFINED) {
+        window->x = 0;
+    }
+    if (window->y == SDL_WINDOWPOS_UNDEFINED) {
+        window->y = 0;
+    }
+
+    data->waylandData = c;
+    data->sdlwindow = window;
+
+    data->surface =
+        wl_compositor_create_surface(c->compositor);
+    wl_surface_set_user_data(data->surface, data);
+
+    if (c->shell.xdg) {
+        data->shell_surface.xdg.surface = xdg_wm_base_get_xdg_surface(c->shell.xdg, data->surface);
+        /* !!! FIXME: add popup role */
+        data->shell_surface.xdg.roleobj.toplevel = xdg_surface_get_toplevel(data->shell_surface.xdg.surface);
+        xdg_toplevel_add_listener(data->shell_surface.xdg.roleobj.toplevel, &toplevel_listener_xdg, data);
+        xdg_toplevel_set_app_id(data->shell_surface.xdg.roleobj.toplevel, c->classname);
+    } else if (c->shell.zxdg) {
+        data->shell_surface.zxdg.surface = zxdg_shell_v6_get_xdg_surface(c->shell.zxdg, data->surface);
+        /* !!! FIXME: add popup role */
+        data->shell_surface.zxdg.roleobj.toplevel = zxdg_surface_v6_get_toplevel(data->shell_surface.zxdg.surface);
+        zxdg_toplevel_v6_add_listener(data->shell_surface.zxdg.roleobj.toplevel, &toplevel_listener_zxdg, data);
+        zxdg_toplevel_v6_set_app_id(data->shell_surface.zxdg.roleobj.toplevel, c->classname);
+    } else {
+        data->shell_surface.wl = wl_shell_get_shell_surface(c->shell.wl, data->surface);
+        wl_shell_surface_set_class(data->shell_surface.wl, c->classname);
+    }
+
+#ifdef SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH
+    if (c->surface_extension) {
+        data->extended_surface = qt_surface_extension_get_extended_surface(
+                c->surface_extension, data->surface);
+
+        QtExtendedSurface_Subscribe(data->extended_surface, SDL_HINT_QTWAYLAND_CONTENT_ORIENTATION);
+        QtExtendedSurface_Subscribe(data->extended_surface, SDL_HINT_QTWAYLAND_WINDOW_FLAGS);
+    }
+#endif /* SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH */
+
+    data->egl_window = WAYLAND_wl_egl_window_create(data->surface,
+                                            window->w, window->h);
+
+    /* Create the GLES window surface */
+    data->egl_surface = SDL_EGL_CreateSurface(_this, (NativeWindowType) data->egl_window);
+    
+    if (data->egl_surface == EGL_NO_SURFACE) {
+        return SDL_SetError("failed to create a window surface");
+    }
+
+    if (c->shell.xdg) {
+        if (data->shell_surface.xdg.surface) {
+            xdg_surface_set_user_data(data->shell_surface.xdg.surface, data);
+            xdg_surface_add_listener(data->shell_surface.xdg.surface, &shell_surface_listener_xdg, data);
+        }
+    } else if (c->shell.zxdg) {
+        if (data->shell_surface.zxdg.surface) {
+            zxdg_surface_v6_set_user_data(data->shell_surface.zxdg.surface, data);
+            zxdg_surface_v6_add_listener(data->shell_surface.zxdg.surface, &shell_surface_listener_zxdg, data);
+        }
+    } else {
+        if (data->shell_surface.wl) {
+            wl_shell_surface_set_user_data(data->shell_surface.wl, data);
+            wl_shell_surface_add_listener(data->shell_surface.wl, &shell_surface_listener_wl, data);
+        }
+    }
+
+#ifdef SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH
+    if (data->extended_surface) {
+        qt_extended_surface_set_user_data(data->extended_surface, data);
+        qt_extended_surface_add_listener(data->extended_surface,
+                                         &extended_surface_listener, data);
+    }
+#endif /* SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH */
+
+    region = wl_compositor_create_region(c->compositor);
+    wl_region_add(region, 0, 0, window->w, window->h);
+    wl_surface_set_opaque_region(data->surface, region);
+    wl_region_destroy(region);
+
+    if (c->relative_mouse_mode) {
+        Wayland_input_lock_pointer(c->input);
+    }
+
+    wl_surface_commit(data->surface);
+    WAYLAND_wl_display_flush(c->display);
+
+    /* we have to wait until the surface gets a "configure" event, or
+       use of this surface will fail. This is a new rule for xdg_shell. */
+    if (c->shell.xdg) {
+        if (data->shell_surface.xdg.surface) {
+            while (!data->shell_surface.xdg.initial_configure_seen) {
+                WAYLAND_wl_display_flush(c->display);
+                WAYLAND_wl_display_dispatch(c->display);
+            }
+        }
+    } else if (c->shell.zxdg) {
+        if (data->shell_surface.zxdg.surface) {
+            while (!data->shell_surface.zxdg.initial_configure_seen) {
+                WAYLAND_wl_display_flush(c->display);
+                WAYLAND_wl_display_dispatch(c->display);
+            }
+        }
+    }
+
+    return 0;
+}
+
+void Wayland_SetWindowSize(_THIS, SDL_Window * window)
+{
+    SDL_VideoData *data = _this->driverdata;
+    SDL_WindowData *wind = window->driverdata;
+    struct wl_region *region;
+
+    WAYLAND_wl_egl_window_resize(wind->egl_window, window->w, window->h, 0, 0);
+
+    region =wl_compositor_create_region(data->compositor);
+    wl_region_add(region, 0, 0, window->w, window->h);
+    wl_surface_set_opaque_region(wind->surface, region);
+    wl_region_destroy(region);
+}
+
+void Wayland_SetWindowTitle(_THIS, SDL_Window * window)
+{
+    SDL_WindowData *wind = window->driverdata;
+    SDL_VideoData *viddata = (SDL_VideoData *) _this->driverdata;
+    
+    if (window->title != NULL) {
+        if (viddata->shell.xdg) {
+            xdg_toplevel_set_title(wind->shell_surface.xdg.roleobj.toplevel, window->title);
+        } else if (viddata->shell.zxdg) {
+            zxdg_toplevel_v6_set_title(wind->shell_surface.zxdg.roleobj.toplevel, window->title);
+        } else {
+            wl_shell_surface_set_title(wind->shell_surface.wl, window->title);
+        }
+    }
+
+    WAYLAND_wl_display_flush( ((SDL_VideoData*)_this->driverdata)->display );
+}
+
+void Wayland_DestroyWindow(_THIS, SDL_Window *window)
+{
+    SDL_VideoData *data = _this->driverdata;
+    SDL_WindowData *wind = window->driverdata;
+
+    if (data) {
+        SDL_EGL_DestroySurface(_this, wind->egl_surface);
+        WAYLAND_wl_egl_window_destroy(wind->egl_window);
+
+        if (data->shell.xdg) {
+            if (wind->shell_surface.xdg.roleobj.toplevel) {
+                xdg_toplevel_destroy(wind->shell_surface.xdg.roleobj.toplevel);
+            }
+            if (wind->shell_surface.zxdg.surface) {
+                xdg_surface_destroy(wind->shell_surface.xdg.surface);
+            }
+        } else if (data->shell.zxdg) {
+            if (wind->shell_surface.zxdg.roleobj.toplevel) {
+                zxdg_toplevel_v6_destroy(wind->shell_surface.zxdg.roleobj.toplevel);
+            }
+            if (wind->shell_surface.zxdg.surface) {
+                zxdg_surface_v6_destroy(wind->shell_surface.zxdg.surface);
+            }
+        } else {
+            if (wind->shell_surface.wl) {
+                wl_shell_surface_destroy(wind->shell_surface.wl);
+            }
+        }
+
+#ifdef SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH
+        if (wind->extended_surface) {
+            QtExtendedSurface_Unsubscribe(wind->extended_surface, SDL_HINT_QTWAYLAND_CONTENT_ORIENTATION);
+            QtExtendedSurface_Unsubscribe(wind->extended_surface, SDL_HINT_QTWAYLAND_WINDOW_FLAGS);
+            qt_extended_surface_destroy(wind->extended_surface);
+        }
+#endif /* SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH */
+        wl_surface_destroy(wind->surface);
+
+        SDL_free(wind);
+        WAYLAND_wl_display_flush(data->display);
+    }
+    window->driverdata = NULL;
+}
+
+#endif /* SDL_VIDEO_DRIVER_WAYLAND && SDL_VIDEO_OPENGL_EGL */
+
+/* vi: set ts=4 sw=4 expandtab: */
diff --git a/source/3rd-party/SDL2/src/video/wayland/SDL_waylandwindow.h b/source/3rd-party/SDL2/src/video/wayland/SDL_waylandwindow.h
new file mode 100644
index 0000000..69b9889
--- /dev/null
+++ b/source/3rd-party/SDL2/src/video/wayland/SDL_waylandwindow.h
@@ -0,0 +1,88 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+#include "../../SDL_internal.h"
+
+#ifndef SDL_waylandwindow_h_
+#define SDL_waylandwindow_h_
+
+#include "../SDL_sysvideo.h"
+#include "SDL_syswm.h"
+
+#include "SDL_waylandvideo.h"
+
+struct SDL_WaylandInput;
+
+typedef struct {
+    struct zxdg_surface_v6 *surface;
+    union {
+        struct zxdg_toplevel_v6 *toplevel;
+        struct zxdg_popup_v6 *popup;
+    } roleobj;
+    SDL_bool initial_configure_seen;
+} SDL_zxdg_shell_surface;
+
+typedef struct {
+    struct xdg_surface *surface;
+    union {
+        struct xdg_toplevel *toplevel;
+        struct xdg_popup *popup;
+    } roleobj;
+    SDL_bool initial_configure_seen;
+} SDL_xdg_shell_surface;
+
+typedef struct {
+    SDL_Window *sdlwindow;
+    SDL_VideoData *waylandData;
+    struct wl_surface *surface;
+    union {
+        SDL_xdg_shell_surface xdg;
+        SDL_zxdg_shell_surface zxdg;
+        struct wl_shell_surface *wl;
+    } shell_surface;
+    struct wl_egl_window *egl_window;
+    struct SDL_WaylandInput *keyboard_device;
+    EGLSurface egl_surface;
+    struct zwp_locked_pointer_v1 *locked_pointer;
+
+#ifdef SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH
+    struct qt_extended_surface *extended_surface;
+#endif /* SDL_VIDEO_DRIVER_WAYLAND_QT_TOUCH */    
+} SDL_WindowData;
+
+extern void Wayland_ShowWindow(_THIS, SDL_Window *window);
+extern void Wayland_SetWindowFullscreen(_THIS, SDL_Window * window,
+                                        SDL_VideoDisplay * _display,
+                                        SDL_bool fullscreen);
+extern void Wayland_MaximizeWindow(_THIS, SDL_Window * window);
+extern void Wayland_RestoreWindow(_THIS, SDL_Window * window);
+extern int Wayland_CreateWindow(_THIS, SDL_Window *window);
+extern void Wayland_SetWindowSize(_THIS, SDL_Window * window);
+extern void Wayland_SetWindowTitle(_THIS, SDL_Window * window);
+extern void Wayland_DestroyWindow(_THIS, SDL_Window *window);
+
+extern SDL_bool
+Wayland_GetWindowWMInfo(_THIS, SDL_Window * window, SDL_SysWMinfo * info);
+extern int Wayland_SetWindowHitTest(SDL_Window *window, SDL_bool enabled);
+
+#endif /* SDL_waylandwindow_h_ */
+
+/* vi: set ts=4 sw=4 expandtab: */