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Support returning <8bpp surfaces in SDL_LoadBMP_RW

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This commit is contained in:
Cameron Cawley
2023-11-17 14:10:32 +00:00
committed by Sam Lantinga
parent 773ec1cfcb
commit 05e7dcf8f8
3 changed files with 40 additions and 79 deletions
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7
test/testutils.c
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@@ -116,7 +116,12 @@ LoadTexture(SDL_Renderer *renderer, const char *file, SDL_bool transparent,
/* Set transparent pixel as the pixel at (0,0) */
if (transparent) {
if (temp->format->palette) {
SDL_SetSurfaceColorKey(temp, SDL_TRUE, *(Uint8 *)temp->pixels);
const Uint8 bpp = temp->format->BitsPerPixel;
const Uint8 mask = (1 << bpp) - 1;
if (SDL_PIXELORDER(temp->format->format) == SDL_BITMAPORDER_4321)
SDL_SetSurfaceColorKey(temp, SDL_TRUE, (*(Uint8 *)temp->pixels) & mask);
else
SDL_SetSurfaceColorKey(temp, SDL_TRUE, ((*(Uint8 *)temp->pixels) >> (8 - bpp)) & mask);
} else {
switch (temp->format->BitsPerPixel) {
case 15: