1 files changed, 134 insertions, 0 deletions
diff --git a/source/3rd-party/SDL2/src/video/mir/SDL_mirframebuffer.c b/source/3rd-party/SDL2/src/video/mir/SDL_mirframebuffer.c
new file mode 100644
index 0000000..d678fff
--- /dev/null
+++ b/source/3rd-party/SDL2/src/video/mir/SDL_mirframebuffer.c
@@ -0,0 +1,134 @@
+/*
+  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 Brandon Schaefer, <brandon.schaefer@canonical.com>
+*/
+
+#include "../../SDL_internal.h"
+
+#if SDL_VIDEO_DRIVER_MIR
+
+#include "SDL_mirevents.h"
+#include "SDL_mirframebuffer.h"
+#include "SDL_mirwindow.h"
+
+#include "SDL_mirdyn.h"
+
+int
+MIR_CreateWindowFramebuffer(_THIS, SDL_Window* window, Uint32* format,
+                            void** pixels, int* pitch)
+{
+    MIR_Data* mir_data = _this->driverdata;
+
+    mir_data->software = SDL_TRUE;
+
+    if (MIR_CreateWindow(_this, window) < 0)
+        return SDL_SetError("Failed to create a mir window.");
+
+    *format = MIR_GetSDLPixelFormat(mir_data->pixel_format);
+    if (*format == SDL_PIXELFORMAT_UNKNOWN)
+        return SDL_SetError("Unknown pixel format");
+
+    *pitch = (((window->w * SDL_BYTESPERPIXEL(*format)) + 3) & ~3);
+
+    *pixels = SDL_malloc(window->h*(*pitch));
+    if (*pixels == NULL)
+        return SDL_OutOfMemory();
+
+    return 0;
+}
+
+int
+MIR_UpdateWindowFramebuffer(_THIS, SDL_Window* window,
+                            const SDL_Rect* rects, int numrects)
+{
+    MIR_Window* mir_window = window->driverdata;
+
+    MirGraphicsRegion region;
+    MirBufferStream* bs;
+    int i, j, x, y, w, h, start;
+    int bytes_per_pixel, bytes_per_row, s_stride, d_stride;
+    char* s_dest;
+    char* pixels;
+
+    bs = MIR_mir_window_get_buffer_stream(mir_window->window);
+    MIR_mir_buffer_stream_get_graphics_region(bs, &region);
+
+    s_dest = region.vaddr;
+    pixels = (char*)window->surface->pixels;
+
+    s_stride = window->surface->pitch;
+    d_stride = region.stride;
+    bytes_per_pixel = window->surface->format->BytesPerPixel;
+
+    for (i = 0; i < numrects; i++) {
+        s_dest = region.vaddr;
+        pixels = (char*)window->surface->pixels;
+
+        x = rects[i].x;
+        y = rects[i].y;
+        w = rects[i].w;
+        h = rects[i].h;
+
+        if (w <= 0 || h <= 0 || (x + w) <= 0 || (y + h) <= 0)
+            continue;
+
+        if (x < 0) {
+            x += w;
+            w += rects[i].x;
+        }
+
+        if (y < 0) {
+            y += h;
+            h += rects[i].y;
+        }
+
+        if (x + w > window->w)
+            w = window->w - x;
+        if (y + h > window->h)
+            h = window->h - y;
+
+        start = y * s_stride + x;
+        pixels += start;
+        s_dest += start;
+
+        bytes_per_row =  bytes_per_pixel * w;
+        for (j = 0; j < h; j++) {
+            SDL_memcpy(s_dest, pixels, bytes_per_row);
+            pixels += s_stride;
+            s_dest += d_stride;
+        }
+    }
+
+    MIR_mir_buffer_stream_swap_buffers_sync(bs);
+
+    return 0;
+}
+
+void
+MIR_DestroyWindowFramebuffer(_THIS, SDL_Window* window)
+{
+}
+
+#endif /* SDL_VIDEO_DRIVER_MIR */
+
+/* vi: set ts=4 sw=4 expandtab: */