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Select the best pixel formats for use in the software renderer

main
Cameron Cawley 2022-10-15 12:36:07 +01:00 committed by Sam Lantinga
parent 712457ec28
commit 4ee4e49e49
1 changed files with 99 additions and 9 deletions
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108
src/render/software/SDL_render_sw.c
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@ -1011,6 +1011,100 @@ SW_DestroyRenderer(SDL_Renderer * renderer)
SDL_free(renderer);
}
static void
SW_SelectBestFormats(SDL_Renderer *renderer, Uint32 format)
{
/* Prefer the format used by the framebuffer by default. */
renderer->info.texture_formats[renderer->info.num_texture_formats++] = format;
switch (format) {
case SDL_PIXELFORMAT_XRGB4444:
renderer->info.texture_formats[renderer->info.num_texture_formats++] = SDL_PIXELFORMAT_ARGB4444;
break;
case SDL_PIXELFORMAT_XBGR4444:
renderer->info.texture_formats[renderer->info.num_texture_formats++] = SDL_PIXELFORMAT_ABGR4444;
break;
case SDL_PIXELFORMAT_ARGB4444:
renderer->info.texture_formats[renderer->info.num_texture_formats++] = SDL_PIXELFORMAT_XRGB4444;
break;
case SDL_PIXELFORMAT_ABGR4444:
renderer->info.texture_formats[renderer->info.num_texture_formats++] = SDL_PIXELFORMAT_XBGR4444;
break;
case SDL_PIXELFORMAT_XRGB1555:
renderer->info.texture_formats[renderer->info.num_texture_formats++] = SDL_PIXELFORMAT_ARGB1555;
break;
case SDL_PIXELFORMAT_XBGR1555:
renderer->info.texture_formats[renderer->info.num_texture_formats++] = SDL_PIXELFORMAT_ABGR1555;
break;
case SDL_PIXELFORMAT_ARGB1555:
renderer->info.texture_formats[renderer->info.num_texture_formats++] = SDL_PIXELFORMAT_XRGB1555;
break;
case SDL_PIXELFORMAT_ABGR1555:
renderer->info.texture_formats[renderer->info.num_texture_formats++] = SDL_PIXELFORMAT_XBGR1555;
break;
case SDL_PIXELFORMAT_XRGB8888:
renderer->info.texture_formats[renderer->info.num_texture_formats++] = SDL_PIXELFORMAT_ARGB8888;
break;
case SDL_PIXELFORMAT_RGBX8888:
renderer->info.texture_formats[renderer->info.num_texture_formats++] = SDL_PIXELFORMAT_RGBA8888;
break;
case SDL_PIXELFORMAT_XBGR8888:
renderer->info.texture_formats[renderer->info.num_texture_formats++] = SDL_PIXELFORMAT_ABGR8888;
break;
case SDL_PIXELFORMAT_BGRX8888:
renderer->info.texture_formats[renderer->info.num_texture_formats++] = SDL_PIXELFORMAT_BGRA8888;
break;
case SDL_PIXELFORMAT_ARGB8888:
renderer->info.texture_formats[renderer->info.num_texture_formats++] = SDL_PIXELFORMAT_XRGB8888;
break;
case SDL_PIXELFORMAT_RGBA8888:
renderer->info.texture_formats[renderer->info.num_texture_formats++] = SDL_PIXELFORMAT_RGBX8888;
break;
case SDL_PIXELFORMAT_ABGR8888:
renderer->info.texture_formats[renderer->info.num_texture_formats++] = SDL_PIXELFORMAT_XBGR8888;
break;
case SDL_PIXELFORMAT_BGRA8888:
renderer->info.texture_formats[renderer->info.num_texture_formats++] = SDL_PIXELFORMAT_BGRX8888;
break;
}
/* Ensure that we always have a SDL_PACKEDLAYOUT_8888 format. Having a matching component order increases the
* chances of getting a fast path for blitting.
*/
if (SDL_ISPIXELFORMAT_PACKED(format)) {
if (SDL_PIXELLAYOUT(format) != SDL_PACKEDLAYOUT_8888) {
switch (SDL_PIXELORDER(format)) {
case SDL_PACKEDORDER_BGRX:
case SDL_PACKEDORDER_BGRA:
renderer->info.texture_formats[renderer->info.num_texture_formats++] = SDL_PIXELFORMAT_BGRX8888;
renderer->info.texture_formats[renderer->info.num_texture_formats++] = SDL_PIXELFORMAT_BGRA8888;
break;
case SDL_PACKEDORDER_RGBX:
case SDL_PACKEDORDER_RGBA:
renderer->info.texture_formats[renderer->info.num_texture_formats++] = SDL_PIXELFORMAT_RGBX8888;
renderer->info.texture_formats[renderer->info.num_texture_formats++] = SDL_PIXELFORMAT_RGBA8888;
break;
case SDL_PACKEDORDER_XBGR:
case SDL_PACKEDORDER_ABGR:
renderer->info.texture_formats[renderer->info.num_texture_formats++] = SDL_PIXELFORMAT_XBGR8888;
renderer->info.texture_formats[renderer->info.num_texture_formats++] = SDL_PIXELFORMAT_ABGR8888;
break;
case SDL_PACKEDORDER_XRGB:
case SDL_PACKEDORDER_ARGB:
default:
renderer->info.texture_formats[renderer->info.num_texture_formats++] = SDL_PIXELFORMAT_XRGB8888;
renderer->info.texture_formats[renderer->info.num_texture_formats++] = SDL_PIXELFORMAT_ARGB8888;
break;
}
}
} else {
renderer->info.texture_formats[renderer->info.num_texture_formats++] = SDL_PIXELFORMAT_XRGB8888;
renderer->info.texture_formats[renderer->info.num_texture_formats++] = SDL_PIXELFORMAT_ARGB8888;
}
}
SDL_Renderer *
SW_CreateRendererForSurface(SDL_Surface * surface)
{
@ -1061,6 +1155,8 @@ SW_CreateRendererForSurface(SDL_Surface * surface)
renderer->info = SW_RenderDriver.info;
renderer->driverdata = data;
SW_SelectBestFormats(renderer, surface->format->format);
SW_ActivateRenderer(renderer);
return renderer;
@ -1103,16 +1199,10 @@ SDL_RenderDriver SW_RenderDriver = {
{
"software",
SDL_RENDERER_SOFTWARE | SDL_RENDERER_PRESENTVSYNC | SDL_RENDERER_TARGETTEXTURE,
8,
0,
{
SDL_PIXELFORMAT_ARGB8888,
SDL_PIXELFORMAT_ABGR8888,
SDL_PIXELFORMAT_RGBA8888,
SDL_PIXELFORMAT_BGRA8888,
SDL_PIXELFORMAT_RGB888,
SDL_PIXELFORMAT_BGR888,
SDL_PIXELFORMAT_RGB565,
SDL_PIXELFORMAT_RGB555
/* formats filled in later */
SDL_PIXELFORMAT_UNKNOWN
},
0,
0}