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diff --git a/source/3rd-party/SDL2/src/video/SDL_blit.h b/source/3rd-party/SDL2/src/video/SDL_blit.h
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+++ b/source/3rd-party/SDL2/src/video/SDL_blit.h
@@ -0,0 +1,553 @@
+/*
+ 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_blit_h_
+#define SDL_blit_h_
+
+#include "SDL_cpuinfo.h"
+#include "SDL_endian.h"
+#include "SDL_surface.h"
+
+/* Table to do pixel byte expansion */
+extern Uint8* SDL_expand_byte[9];
+
+/* SDL blit copy flags */
+#define SDL_COPY_MODULATE_COLOR 0x00000001
+#define SDL_COPY_MODULATE_ALPHA 0x00000002
+#define SDL_COPY_BLEND 0x00000010
+#define SDL_COPY_ADD 0x00000020
+#define SDL_COPY_MOD 0x00000040
+#define SDL_COPY_COLORKEY 0x00000100
+#define SDL_COPY_NEAREST 0x00000200
+#define SDL_COPY_RLE_DESIRED 0x00001000
+#define SDL_COPY_RLE_COLORKEY 0x00002000
+#define SDL_COPY_RLE_ALPHAKEY 0x00004000
+#define SDL_COPY_RLE_MASK (SDL_COPY_RLE_DESIRED|SDL_COPY_RLE_COLORKEY|SDL_COPY_RLE_ALPHAKEY)
+
+/* SDL blit CPU flags */
+#define SDL_CPU_ANY 0x00000000
+#define SDL_CPU_MMX 0x00000001
+#define SDL_CPU_3DNOW 0x00000002
+#define SDL_CPU_SSE 0x00000004
+#define SDL_CPU_SSE2 0x00000008
+#define SDL_CPU_ALTIVEC_PREFETCH 0x00000010
+#define SDL_CPU_ALTIVEC_NOPREFETCH 0x00000020
+
+typedef struct
+{
+ Uint8 *src;
+ int src_w, src_h;
+ int src_pitch;
+ int src_skip;
+ Uint8 *dst;
+ int dst_w, dst_h;
+ int dst_pitch;
+ int dst_skip;
+ SDL_PixelFormat *src_fmt;
+ SDL_PixelFormat *dst_fmt;
+ Uint8 *table;
+ int flags;
+ Uint32 colorkey;
+ Uint8 r, g, b, a;
+} SDL_BlitInfo;
+
+typedef void (*SDL_BlitFunc) (SDL_BlitInfo *info);
+
+
+typedef struct
+{
+ Uint32 src_format;
+ Uint32 dst_format;
+ int flags;
+ int cpu;
+ SDL_BlitFunc func;
+} SDL_BlitFuncEntry;
+
+/* Blit mapping definition */
+typedef struct SDL_BlitMap
+{
+ SDL_Surface *dst;
+ int identity;
+ SDL_blit blit;
+ void *data;
+ SDL_BlitInfo info;
+
+ /* the version count matches the destination; mismatch indicates
+ an invalid mapping */
+ Uint32 dst_palette_version;
+ Uint32 src_palette_version;
+} SDL_BlitMap;
+
+/* Functions found in SDL_blit.c */
+extern int SDL_CalculateBlit(SDL_Surface * surface);
+
+/* Functions found in SDL_blit_*.c */
+extern SDL_BlitFunc SDL_CalculateBlit0(SDL_Surface * surface);
+extern SDL_BlitFunc SDL_CalculateBlit1(SDL_Surface * surface);
+extern SDL_BlitFunc SDL_CalculateBlitN(SDL_Surface * surface);
+extern SDL_BlitFunc SDL_CalculateBlitA(SDL_Surface * surface);
+
+/*
+ * Useful macros for blitting routines
+ */
+
+#if defined(__GNUC__)
+#define DECLARE_ALIGNED(t,v,a) t __attribute__((aligned(a))) v
+#elif defined(_MSC_VER)
+#define DECLARE_ALIGNED(t,v,a) __declspec(align(a)) t v
+#else
+#define DECLARE_ALIGNED(t,v,a) t v
+#endif
+
+/* Load pixel of the specified format from a buffer and get its R-G-B values */
+#define RGB_FROM_PIXEL(Pixel, fmt, r, g, b) \
+{ \
+ r = SDL_expand_byte[fmt->Rloss][((Pixel&fmt->Rmask)>>fmt->Rshift)]; \
+ g = SDL_expand_byte[fmt->Gloss][((Pixel&fmt->Gmask)>>fmt->Gshift)]; \
+ b = SDL_expand_byte[fmt->Bloss][((Pixel&fmt->Bmask)>>fmt->Bshift)]; \
+}
+#define RGB_FROM_RGB565(Pixel, r, g, b) \
+{ \
+ r = SDL_expand_byte[3][((Pixel&0xF800)>>11)]; \
+ g = SDL_expand_byte[2][((Pixel&0x07E0)>>5)]; \
+ b = SDL_expand_byte[3][(Pixel&0x001F)]; \
+}
+#define RGB_FROM_RGB555(Pixel, r, g, b) \
+{ \
+ r = SDL_expand_byte[3][((Pixel&0x7C00)>>10)]; \
+ g = SDL_expand_byte[3][((Pixel&0x03E0)>>5)]; \
+ b = SDL_expand_byte[3][(Pixel&0x001F)]; \
+}
+#define RGB_FROM_RGB888(Pixel, r, g, b) \
+{ \
+ r = ((Pixel&0xFF0000)>>16); \
+ g = ((Pixel&0xFF00)>>8); \
+ b = (Pixel&0xFF); \
+}
+#define RETRIEVE_RGB_PIXEL(buf, bpp, Pixel) \
+do { \
+ switch (bpp) { \
+ case 1: \
+ Pixel = *((Uint8 *)(buf)); \
+ break; \
+ \
+ case 2: \
+ Pixel = *((Uint16 *)(buf)); \
+ break; \
+ \
+ case 3: { \
+ Uint8 *B = (Uint8 *)(buf); \
+ if (SDL_BYTEORDER == SDL_LIL_ENDIAN) { \
+ Pixel = B[0] + (B[1] << 8) + (B[2] << 16); \
+ } else { \
+ Pixel = (B[0] << 16) + (B[1] << 8) + B[2]; \
+ } \
+ } \
+ break; \
+ \
+ case 4: \
+ Pixel = *((Uint32 *)(buf)); \
+ break; \
+ \
+ default: \
+ Pixel = 0; /* stop gcc complaints */ \
+ break; \
+ } \
+} while (0)
+
+#define DISEMBLE_RGB(buf, bpp, fmt, Pixel, r, g, b) \
+do { \
+ switch (bpp) { \
+ case 1: \
+ Pixel = *((Uint8 *)(buf)); \
+ RGB_FROM_PIXEL(Pixel, fmt, r, g, b); \
+ break; \
+ \
+ case 2: \
+ Pixel = *((Uint16 *)(buf)); \
+ RGB_FROM_PIXEL(Pixel, fmt, r, g, b); \
+ break; \
+ \
+ case 3: { \
+ Pixel = 0; \
+ if (SDL_BYTEORDER == SDL_LIL_ENDIAN) { \
+ r = *((buf)+fmt->Rshift/8); \
+ g = *((buf)+fmt->Gshift/8); \
+ b = *((buf)+fmt->Bshift/8); \
+ } else { \
+ r = *((buf)+2-fmt->Rshift/8); \
+ g = *((buf)+2-fmt->Gshift/8); \
+ b = *((buf)+2-fmt->Bshift/8); \
+ } \
+ } \
+ break; \
+ \
+ case 4: \
+ Pixel = *((Uint32 *)(buf)); \
+ RGB_FROM_PIXEL(Pixel, fmt, r, g, b); \
+ break; \
+ \
+ default: \
+ /* stop gcc complaints */ \
+ Pixel = 0; \
+ r = g = b = 0; \
+ break; \
+ } \
+} while (0)
+
+/* Assemble R-G-B values into a specified pixel format and store them */
+#define PIXEL_FROM_RGB(Pixel, fmt, r, g, b) \
+{ \
+ Pixel = ((r>>fmt->Rloss)<<fmt->Rshift)| \
+ ((g>>fmt->Gloss)<<fmt->Gshift)| \
+ ((b>>fmt->Bloss)<<fmt->Bshift)| \
+ fmt->Amask; \
+}
+#define RGB565_FROM_RGB(Pixel, r, g, b) \
+{ \
+ Pixel = ((r>>3)<<11)|((g>>2)<<5)|(b>>3); \
+}
+#define RGB555_FROM_RGB(Pixel, r, g, b) \
+{ \
+ Pixel = ((r>>3)<<10)|((g>>3)<<5)|(b>>3); \
+}
+#define RGB888_FROM_RGB(Pixel, r, g, b) \
+{ \
+ Pixel = (r<<16)|(g<<8)|b; \
+}
+#define ARGB8888_FROM_RGBA(Pixel, r, g, b, a) \
+{ \
+ Pixel = (a<<24)|(r<<16)|(g<<8)|b; \
+}
+#define RGBA8888_FROM_RGBA(Pixel, r, g, b, a) \
+{ \
+ Pixel = (r<<24)|(g<<16)|(b<<8)|a; \
+}
+#define ABGR8888_FROM_RGBA(Pixel, r, g, b, a) \
+{ \
+ Pixel = (a<<24)|(b<<16)|(g<<8)|r; \
+}
+#define BGRA8888_FROM_RGBA(Pixel, r, g, b, a) \
+{ \
+ Pixel = (b<<24)|(g<<16)|(r<<8)|a; \
+}
+#define ARGB2101010_FROM_RGBA(Pixel, r, g, b, a) \
+{ \
+ r = r ? ((r << 2) | 0x3) : 0; \
+ g = g ? ((g << 2) | 0x3) : 0; \
+ b = b ? ((b << 2) | 0x3) : 0; \
+ a = (a * 3) / 255; \
+ Pixel = (a<<30)|(r<<20)|(g<<10)|b; \
+}
+#define ASSEMBLE_RGB(buf, bpp, fmt, r, g, b) \
+{ \
+ switch (bpp) { \
+ case 1: { \
+ Uint8 _Pixel; \
+ \
+ PIXEL_FROM_RGB(_Pixel, fmt, r, g, b); \
+ *((Uint8 *)(buf)) = _Pixel; \
+ } \
+ break; \
+ \
+ case 2: { \
+ Uint16 _Pixel; \
+ \
+ PIXEL_FROM_RGB(_Pixel, fmt, r, g, b); \
+ *((Uint16 *)(buf)) = _Pixel; \
+ } \
+ break; \
+ \
+ case 3: { \
+ if (SDL_BYTEORDER == SDL_LIL_ENDIAN) { \
+ *((buf)+fmt->Rshift/8) = r; \
+ *((buf)+fmt->Gshift/8) = g; \
+ *((buf)+fmt->Bshift/8) = b; \
+ } else { \
+ *((buf)+2-fmt->Rshift/8) = r; \
+ *((buf)+2-fmt->Gshift/8) = g; \
+ *((buf)+2-fmt->Bshift/8) = b; \
+ } \
+ } \
+ break; \
+ \
+ case 4: { \
+ Uint32 _Pixel; \
+ \
+ PIXEL_FROM_RGB(_Pixel, fmt, r, g, b); \
+ *((Uint32 *)(buf)) = _Pixel; \
+ } \
+ break; \
+ } \
+}
+
+/* FIXME: Should we rescale alpha into 0..255 here? */
+#define RGBA_FROM_PIXEL(Pixel, fmt, r, g, b, a) \
+{ \
+ r = SDL_expand_byte[fmt->Rloss][((Pixel&fmt->Rmask)>>fmt->Rshift)]; \
+ g = SDL_expand_byte[fmt->Gloss][((Pixel&fmt->Gmask)>>fmt->Gshift)]; \
+ b = SDL_expand_byte[fmt->Bloss][((Pixel&fmt->Bmask)>>fmt->Bshift)]; \
+ a = SDL_expand_byte[fmt->Aloss][((Pixel&fmt->Amask)>>fmt->Ashift)]; \
+}
+#define RGBA_FROM_8888(Pixel, fmt, r, g, b, a) \
+{ \
+ r = (Pixel&fmt->Rmask)>>fmt->Rshift; \
+ g = (Pixel&fmt->Gmask)>>fmt->Gshift; \
+ b = (Pixel&fmt->Bmask)>>fmt->Bshift; \
+ a = (Pixel&fmt->Amask)>>fmt->Ashift; \
+}
+#define RGBA_FROM_RGBA8888(Pixel, r, g, b, a) \
+{ \
+ r = (Pixel>>24); \
+ g = ((Pixel>>16)&0xFF); \
+ b = ((Pixel>>8)&0xFF); \
+ a = (Pixel&0xFF); \
+}
+#define RGBA_FROM_ARGB8888(Pixel, r, g, b, a) \
+{ \
+ r = ((Pixel>>16)&0xFF); \
+ g = ((Pixel>>8)&0xFF); \
+ b = (Pixel&0xFF); \
+ a = (Pixel>>24); \
+}
+#define RGBA_FROM_ABGR8888(Pixel, r, g, b, a) \
+{ \
+ r = (Pixel&0xFF); \
+ g = ((Pixel>>8)&0xFF); \
+ b = ((Pixel>>16)&0xFF); \
+ a = (Pixel>>24); \
+}
+#define RGBA_FROM_BGRA8888(Pixel, r, g, b, a) \
+{ \
+ r = ((Pixel>>8)&0xFF); \
+ g = ((Pixel>>16)&0xFF); \
+ b = (Pixel>>24); \
+ a = (Pixel&0xFF); \
+}
+#define RGBA_FROM_ARGB2101010(Pixel, r, g, b, a) \
+{ \
+ r = ((Pixel>>22)&0xFF); \
+ g = ((Pixel>>12)&0xFF); \
+ b = ((Pixel>>2)&0xFF); \
+ a = SDL_expand_byte[6][(Pixel>>30)]; \
+}
+#define DISEMBLE_RGBA(buf, bpp, fmt, Pixel, r, g, b, a) \
+do { \
+ switch (bpp) { \
+ case 1: \
+ Pixel = *((Uint8 *)(buf)); \
+ RGBA_FROM_PIXEL(Pixel, fmt, r, g, b, a); \
+ break; \
+ \
+ case 2: \
+ Pixel = *((Uint16 *)(buf)); \
+ RGBA_FROM_PIXEL(Pixel, fmt, r, g, b, a); \
+ break; \
+ \
+ case 3: { \
+ Pixel = 0; \
+ if (SDL_BYTEORDER == SDL_LIL_ENDIAN) { \
+ r = *((buf)+fmt->Rshift/8); \
+ g = *((buf)+fmt->Gshift/8); \
+ b = *((buf)+fmt->Bshift/8); \
+ } else { \
+ r = *((buf)+2-fmt->Rshift/8); \
+ g = *((buf)+2-fmt->Gshift/8); \
+ b = *((buf)+2-fmt->Bshift/8); \
+ } \
+ a = 0xFF; \
+ } \
+ break; \
+ \
+ case 4: \
+ Pixel = *((Uint32 *)(buf)); \
+ RGBA_FROM_PIXEL(Pixel, fmt, r, g, b, a); \
+ break; \
+ \
+ default: \
+ /* stop gcc complaints */ \
+ Pixel = 0; \
+ r = g = b = a = 0; \
+ break; \
+ } \
+} while (0)
+
+/* FIXME: this isn't correct, especially for Alpha (maximum != 255) */
+#define PIXEL_FROM_RGBA(Pixel, fmt, r, g, b, a) \
+{ \
+ Pixel = ((r>>fmt->Rloss)<<fmt->Rshift)| \
+ ((g>>fmt->Gloss)<<fmt->Gshift)| \
+ ((b>>fmt->Bloss)<<fmt->Bshift)| \
+ ((a>>fmt->Aloss)<<fmt->Ashift); \
+}
+#define ASSEMBLE_RGBA(buf, bpp, fmt, r, g, b, a) \
+{ \
+ switch (bpp) { \
+ case 1: { \
+ Uint8 _pixel; \
+ \
+ PIXEL_FROM_RGBA(_pixel, fmt, r, g, b, a); \
+ *((Uint8 *)(buf)) = _pixel; \
+ } \
+ break; \
+ \
+ case 2: { \
+ Uint16 _pixel; \
+ \
+ PIXEL_FROM_RGBA(_pixel, fmt, r, g, b, a); \
+ *((Uint16 *)(buf)) = _pixel; \
+ } \
+ break; \
+ \
+ case 3: { \
+ if (SDL_BYTEORDER == SDL_LIL_ENDIAN) { \
+ *((buf)+fmt->Rshift/8) = r; \
+ *((buf)+fmt->Gshift/8) = g; \
+ *((buf)+fmt->Bshift/8) = b; \
+ } else { \
+ *((buf)+2-fmt->Rshift/8) = r; \
+ *((buf)+2-fmt->Gshift/8) = g; \
+ *((buf)+2-fmt->Bshift/8) = b; \
+ } \
+ } \
+ break; \
+ \
+ case 4: { \
+ Uint32 _pixel; \
+ \
+ PIXEL_FROM_RGBA(_pixel, fmt, r, g, b, a); \
+ *((Uint32 *)(buf)) = _pixel; \
+ } \
+ break; \
+ } \
+}
+
+/* Blend the RGB values of two pixels with an alpha value */
+#define ALPHA_BLEND_RGB(sR, sG, sB, A, dR, dG, dB) \
+do { \
+ dR = (Uint8)((((int)(sR-dR)*(int)A)/255)+dR); \
+ dG = (Uint8)((((int)(sG-dG)*(int)A)/255)+dG); \
+ dB = (Uint8)((((int)(sB-dB)*(int)A)/255)+dB); \
+} while(0)
+
+
+/* Blend the RGBA values of two pixels */
+#define ALPHA_BLEND_RGBA(sR, sG, sB, sA, dR, dG, dB, dA) \
+do { \
+ dR = (Uint8)((((int)(sR-dR)*(int)sA)/255)+dR); \
+ dG = (Uint8)((((int)(sG-dG)*(int)sA)/255)+dG); \
+ dB = (Uint8)((((int)(sB-dB)*(int)sA)/255)+dB); \
+ dA = (Uint8)((int)sA+dA-((int)sA*dA)/255); \
+} while(0)
+
+
+/* This is a very useful loop for optimizing blitters */
+#if defined(_MSC_VER) && (_MSC_VER == 1300)
+/* There's a bug in the Visual C++ 7 optimizer when compiling this code */
+#else
+#define USE_DUFFS_LOOP
+#endif
+#ifdef USE_DUFFS_LOOP
+
+/* 8-times unrolled loop */
+#define DUFFS_LOOP8(pixel_copy_increment, width) \
+{ int n = (width+7)/8; \
+ switch (width & 7) { \
+ case 0: do { pixel_copy_increment; /* fallthrough */ \
+ case 7: pixel_copy_increment; /* fallthrough */ \
+ case 6: pixel_copy_increment; /* fallthrough */ \
+ case 5: pixel_copy_increment; /* fallthrough */ \
+ case 4: pixel_copy_increment; /* fallthrough */ \
+ case 3: pixel_copy_increment; /* fallthrough */ \
+ case 2: pixel_copy_increment; /* fallthrough */ \
+ case 1: pixel_copy_increment; /* fallthrough */ \
+ } while ( --n > 0 ); \
+ } \
+}
+
+/* 4-times unrolled loop */
+#define DUFFS_LOOP4(pixel_copy_increment, width) \
+{ int n = (width+3)/4; \
+ switch (width & 3) { \
+ case 0: do { pixel_copy_increment; /* fallthrough */ \
+ case 3: pixel_copy_increment; /* fallthrough */ \
+ case 2: pixel_copy_increment; /* fallthrough */ \
+ case 1: pixel_copy_increment; /* fallthrough */ \
+ } while (--n > 0); \
+ } \
+}
+
+/* Use the 8-times version of the loop by default */
+#define DUFFS_LOOP(pixel_copy_increment, width) \
+ DUFFS_LOOP8(pixel_copy_increment, width)
+
+/* Special version of Duff's device for even more optimization */
+#define DUFFS_LOOP_124(pixel_copy_increment1, \
+ pixel_copy_increment2, \
+ pixel_copy_increment4, width) \
+{ int n = width; \
+ if (n & 1) { \
+ pixel_copy_increment1; n -= 1; \
+ } \
+ if (n & 2) { \
+ pixel_copy_increment2; n -= 2; \
+ } \
+ if (n & 4) { \
+ pixel_copy_increment4; n -= 4; \
+ } \
+ if (n) { \
+ n /= 8; \
+ do { \
+ pixel_copy_increment4; \
+ pixel_copy_increment4; \
+ } while (--n > 0); \
+ } \
+}
+
+#else
+
+/* Don't use Duff's device to unroll loops */
+#define DUFFS_LOOP(pixel_copy_increment, width) \
+{ int n; \
+ for ( n=width; n > 0; --n ) { \
+ pixel_copy_increment; \
+ } \
+}
+#define DUFFS_LOOP8(pixel_copy_increment, width) \
+ DUFFS_LOOP(pixel_copy_increment, width)
+#define DUFFS_LOOP4(pixel_copy_increment, width) \
+ DUFFS_LOOP(pixel_copy_increment, width)
+#define DUFFS_LOOP_124(pixel_copy_increment1, \
+ pixel_copy_increment2, \
+ pixel_copy_increment4, width) \
+ DUFFS_LOOP(pixel_copy_increment1, width)
+
+#endif /* USE_DUFFS_LOOP */
+
+/* Prevent Visual C++ 6.0 from printing out stupid warnings */
+#if defined(_MSC_VER) && (_MSC_VER >= 600)
+#pragma warning(disable: 4550)
+#endif
+
+#endif /* SDL_blit_h_ */
+
+/* vi: set ts=4 sw=4 expandtab: */
generated by cgit v1.1-26-g67d0 at 2025-05-18 17:29:06 +0000