mirrors/SDL
1
0
Fork 0
mirror of https://github.com/libsdl-org/SDL.git synced 2026-04-03 06:09:20 +00:00
Code Issues Packages Projects Releases Wiki Activity

Each application palette corresponds to one hardware palette

Browse Source 
When the application modifies the palette, any textures that use it will automatically be updated.
This commit is contained in:
Sam Lantinga
2025-09-28 18:31:23 -07:00
parent 5d311635cf
commit b65590159b
11 changed files with 832 additions and 451 deletions
Download Patch File Download Diff File Expand all files Collapse all files

45
src/render/software/SDL_render_sw.c
View File

@@ -99,6 +99,38 @@ static bool SW_GetOutputSize(SDL_Renderer *renderer, int *w, int *h)
return SDL_SetError("Software renderer doesn't have an output surface");
}
static bool SW_CreatePalette(SDL_Renderer *renderer, SDL_TexturePalette *palette)
{
SDL_Palette *surface_palette = SDL_CreatePalette(256);
if (!surface_palette) {
return false;
}
palette->internal = surface_palette;
return true;
}
static bool SW_UpdatePalette(SDL_Renderer *renderer, SDL_TexturePalette *palette, int ncolors, SDL_Color *colors)
{
SDL_Palette *surface_palette = (SDL_Palette *)palette->internal;
return SDL_SetPaletteColors(surface_palette, colors, 0, ncolors);
}
static void SW_DestroyPalette(SDL_Renderer *renderer, SDL_TexturePalette *palette)
{
SDL_Palette *surface_palette = (SDL_Palette *)palette->internal;
SDL_DestroyPalette(surface_palette);
}
static bool SW_ChangeTexturePalette(SDL_Renderer *renderer, SDL_Texture *texture)
{
SDL_Surface *surface = (SDL_Surface *)texture->internal;
SDL_Palette *surface_palette = NULL;
if (texture->palette) {
surface_palette = (SDL_Palette *)texture->palette->internal;
}
return SDL_SetSurfacePalette(surface, surface_palette);
}
static bool SW_CreateTexture(SDL_Renderer *renderer, SDL_Texture *texture, SDL_PropertiesID create_props)
{
SDL_Surface *surface = SDL_CreateSurface(texture->w, texture->h, texture->format);
@@ -132,14 +164,6 @@ static bool SW_CreateTexture(SDL_Renderer *renderer, SDL_Texture *texture, SDL_P
return true;
}
static bool SW_UpdateTexturePalette(SDL_Renderer *renderer, SDL_Texture *texture)
{
SDL_Surface *surface = (SDL_Surface *)texture->internal;
SDL_Palette *palette = texture->palette;
return SDL_SetPaletteColors(surface->palette, palette->colors, 0, palette->ncolors);
}
static bool SW_UpdateTexture(SDL_Renderer *renderer, SDL_Texture *texture,
const SDL_Rect *rect, const void *pixels, int pitch)
{
@@ -1158,8 +1182,11 @@ bool SW_CreateRendererForSurface(SDL_Renderer *renderer, SDL_Surface *surface, S
renderer->WindowEvent = SW_WindowEvent;
renderer->GetOutputSize = SW_GetOutputSize;
renderer->CreatePalette = SW_CreatePalette;
renderer->UpdatePalette = SW_UpdatePalette;
renderer->DestroyPalette = SW_DestroyPalette;
renderer->ChangeTexturePalette = SW_ChangeTexturePalette;
renderer->CreateTexture = SW_CreateTexture;
renderer->UpdateTexturePalette = SW_UpdateTexturePalette;
renderer->UpdateTexture = SW_UpdateTexture;
renderer->LockTexture = SW_LockTexture;
renderer->UnlockTexture = SW_UnlockTexture;