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Diffstat (limited to '3rdparty/SDL2/src/video/SDL_blit.c')
-rw-r--r--3rdparty/SDL2/src/video/SDL_blit.c286
1 files changed, 0 insertions, 286 deletions
diff --git a/3rdparty/SDL2/src/video/SDL_blit.c b/3rdparty/SDL2/src/video/SDL_blit.c
deleted file mode 100644
index 90aa8789843..00000000000
--- a/3rdparty/SDL2/src/video/SDL_blit.c
+++ /dev/null
@@ -1,286 +0,0 @@
-/*
- Simple DirectMedia Layer
- Copyright (C) 1997-2016 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_video.h"
-#include "SDL_sysvideo.h"
-#include "SDL_blit.h"
-#include "SDL_blit_auto.h"
-#include "SDL_blit_copy.h"
-#include "SDL_blit_slow.h"
-#include "SDL_RLEaccel_c.h"
-#include "SDL_pixels_c.h"
-
-/* The general purpose software blit routine */
-static int
-SDL_SoftBlit(SDL_Surface * src, SDL_Rect * srcrect,
- SDL_Surface * dst, SDL_Rect * dstrect)
-{
- int okay;
- int src_locked;
- int dst_locked;
-
- /* Everything is okay at the beginning... */
- okay = 1;
-
- /* Lock the destination if it's in hardware */
- dst_locked = 0;
- if (SDL_MUSTLOCK(dst)) {
- if (SDL_LockSurface(dst) < 0) {
- okay = 0;
- } else {
- dst_locked = 1;
- }
- }
- /* Lock the source if it's in hardware */
- src_locked = 0;
- if (SDL_MUSTLOCK(src)) {
- if (SDL_LockSurface(src) < 0) {
- okay = 0;
- } else {
- src_locked = 1;
- }
- }
-
- /* Set up source and destination buffer pointers, and BLIT! */
- if (okay && !SDL_RectEmpty(srcrect)) {
- SDL_BlitFunc RunBlit;
- SDL_BlitInfo *info = &src->map->info;
-
- /* Set up the blit information */
- info->src = (Uint8 *) src->pixels +
- (Uint16) srcrect->y * src->pitch +
- (Uint16) srcrect->x * info->src_fmt->BytesPerPixel;
- info->src_w = srcrect->w;
- info->src_h = srcrect->h;
- info->src_pitch = src->pitch;
- info->src_skip =
- info->src_pitch - info->src_w * info->src_fmt->BytesPerPixel;
- info->dst =
- (Uint8 *) dst->pixels + (Uint16) dstrect->y * dst->pitch +
- (Uint16) dstrect->x * info->dst_fmt->BytesPerPixel;
- info->dst_w = dstrect->w;
- info->dst_h = dstrect->h;
- info->dst_pitch = dst->pitch;
- info->dst_skip =
- info->dst_pitch - info->dst_w * info->dst_fmt->BytesPerPixel;
- RunBlit = (SDL_BlitFunc) src->map->data;
-
- /* Run the actual software blit */
- RunBlit(info);
- }
-
- /* We need to unlock the surfaces if they're locked */
- if (dst_locked) {
- SDL_UnlockSurface(dst);
- }
- if (src_locked) {
- SDL_UnlockSurface(src);
- }
- /* Blit is done! */
- return (okay ? 0 : -1);
-}
-
-#ifdef __MACOSX__
-#include <sys/sysctl.h>
-
-static SDL_bool
-SDL_UseAltivecPrefetch()
-{
- const char key[] = "hw.l3cachesize";
- u_int64_t result = 0;
- size_t typeSize = sizeof(result);
-
- if (sysctlbyname(key, &result, &typeSize, NULL, 0) == 0 && result > 0) {
- return SDL_TRUE;
- } else {
- return SDL_FALSE;
- }
-}
-#else
-static SDL_bool
-SDL_UseAltivecPrefetch()
-{
- /* Just guess G4 */
- return SDL_TRUE;
-}
-#endif /* __MACOSX__ */
-
-static SDL_BlitFunc
-SDL_ChooseBlitFunc(Uint32 src_format, Uint32 dst_format, int flags,
- SDL_BlitFuncEntry * entries)
-{
- int i, flagcheck;
- static Uint32 features = 0xffffffff;
-
- /* Get the available CPU features */
- if (features == 0xffffffff) {
- const char *override = SDL_getenv("SDL_BLIT_CPU_FEATURES");
-
- features = SDL_CPU_ANY;
-
- /* Allow an override for testing .. */
- if (override) {
- SDL_sscanf(override, "%u", &features);
- } else {
- if (SDL_HasMMX()) {
- features |= SDL_CPU_MMX;
- }
- if (SDL_Has3DNow()) {
- features |= SDL_CPU_3DNOW;
- }
- if (SDL_HasSSE()) {
- features |= SDL_CPU_SSE;
- }
- if (SDL_HasSSE2()) {
- features |= SDL_CPU_SSE2;
- }
- if (SDL_HasAltiVec()) {
- if (SDL_UseAltivecPrefetch()) {
- features |= SDL_CPU_ALTIVEC_PREFETCH;
- } else {
- features |= SDL_CPU_ALTIVEC_NOPREFETCH;
- }
- }
- }
- }
-
- for (i = 0; entries[i].func; ++i) {
- /* Check for matching pixel formats */
- if (src_format != entries[i].src_format) {
- continue;
- }
- if (dst_format != entries[i].dst_format) {
- continue;
- }
-
- /* Check modulation flags */
- flagcheck =
- (flags & (SDL_COPY_MODULATE_COLOR | SDL_COPY_MODULATE_ALPHA));
- if ((flagcheck & entries[i].flags) != flagcheck) {
- continue;
- }
-
- /* Check blend flags */
- flagcheck =
- (flags &
- (SDL_COPY_BLEND | SDL_COPY_ADD | SDL_COPY_MOD));
- if ((flagcheck & entries[i].flags) != flagcheck) {
- continue;
- }
-
- /* Check colorkey flag */
- flagcheck = (flags & SDL_COPY_COLORKEY);
- if ((flagcheck & entries[i].flags) != flagcheck) {
- continue;
- }
-
- /* Check scaling flags */
- flagcheck = (flags & SDL_COPY_NEAREST);
- if ((flagcheck & entries[i].flags) != flagcheck) {
- continue;
- }
-
- /* Check CPU features */
- flagcheck = entries[i].cpu;
- if ((flagcheck & features) != flagcheck) {
- continue;
- }
-
- /* We found the best one! */
- return entries[i].func;
- }
- return NULL;
-}
-
-/* Figure out which of many blit routines to set up on a surface */
-int
-SDL_CalculateBlit(SDL_Surface * surface)
-{
- SDL_BlitFunc blit = NULL;
- SDL_BlitMap *map = surface->map;
- SDL_Surface *dst = map->dst;
-
- /* Clean everything out to start */
- if ((surface->flags & SDL_RLEACCEL) == SDL_RLEACCEL) {
- SDL_UnRLESurface(surface, 1);
- }
- map->blit = SDL_SoftBlit;
- map->info.src_fmt = surface->format;
- map->info.src_pitch = surface->pitch;
- map->info.dst_fmt = dst->format;
- map->info.dst_pitch = dst->pitch;
-
- /* See if we can do RLE acceleration */
- if (map->info.flags & SDL_COPY_RLE_DESIRED) {
- if (SDL_RLESurface(surface) == 0) {
- return 0;
- }
- }
-
- /* Choose a standard blit function */
- if (map->identity && !(map->info.flags & ~SDL_COPY_RLE_DESIRED)) {
- blit = SDL_BlitCopy;
- } else if (surface->format->BitsPerPixel < 8 &&
- SDL_ISPIXELFORMAT_INDEXED(surface->format->format)) {
- blit = SDL_CalculateBlit0(surface);
- } else if (surface->format->BytesPerPixel == 1 &&
- SDL_ISPIXELFORMAT_INDEXED(surface->format->format)) {
- blit = SDL_CalculateBlit1(surface);
- } else if (map->info.flags & SDL_COPY_BLEND) {
- blit = SDL_CalculateBlitA(surface);
- } else {
- blit = SDL_CalculateBlitN(surface);
- }
- if (blit == NULL) {
- Uint32 src_format = surface->format->format;
- Uint32 dst_format = dst->format->format;
-
- blit =
- SDL_ChooseBlitFunc(src_format, dst_format, map->info.flags,
- SDL_GeneratedBlitFuncTable);
- }
-#ifndef TEST_SLOW_BLIT
- if (blit == NULL)
-#endif
- {
- Uint32 src_format = surface->format->format;
- Uint32 dst_format = dst->format->format;
-
- if (!SDL_ISPIXELFORMAT_INDEXED(src_format) &&
- !SDL_ISPIXELFORMAT_FOURCC(src_format) &&
- !SDL_ISPIXELFORMAT_INDEXED(dst_format) &&
- !SDL_ISPIXELFORMAT_FOURCC(dst_format)) {
- blit = SDL_Blit_Slow;
- }
- }
- map->data = blit;
-
- /* Make sure we have a blit function */
- if (blit == NULL) {
- SDL_InvalidateMap(map);
- return SDL_SetError("Blit combination not supported");
- }
-
- return 0;
-}
-
-/* vi: set ts=4 sw=4 expandtab: */