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Each application palette corresponds to one hardware palette

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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
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20
src/render/SDL_sysrender.h
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@@ -70,6 +70,15 @@ typedef struct SDL_RenderViewState
SDL_FPoint current_scale; // this is just `scale * logical_scale`, precalculated, since we use it a lot.
} SDL_RenderViewState;
// Define the SDL texture palette structure
typedef struct SDL_TexturePalette
{
int refcount;
Uint32 version;
Uint32 last_command_generation; // last command queue generation this palette was in.
void *internal; // Driver specific palette representation
} SDL_TexturePalette;
// Define the SDL texture structure
struct SDL_Texture
{
@@ -90,7 +99,8 @@ struct SDL_Texture
SDL_ScaleMode scaleMode; // The texture scale mode
SDL_FColor color; // Texture modulation values
SDL_RenderViewState view; // Target texture view state
SDL_Palette *palette;
SDL_Palette *public_palette;
SDL_TexturePalette *palette;
Uint32 palette_version;
SDL_Surface *palette_surface;
@@ -235,7 +245,10 @@ struct SDL_Renderer
void (*InvalidateCachedState)(SDL_Renderer *renderer);
bool (*RunCommandQueue)(SDL_Renderer *renderer, SDL_RenderCommand *cmd, void *vertices, size_t vertsize);
bool (*UpdateTexturePalette)(SDL_Renderer *renderer, SDL_Texture *texture);
bool (*CreatePalette)(SDL_Renderer *renderer, SDL_TexturePalette *palette);
bool (*UpdatePalette)(SDL_Renderer *renderer, SDL_TexturePalette *palette, int ncolors, SDL_Color *colors);
void (*DestroyPalette)(SDL_Renderer *renderer, SDL_TexturePalette *palette);
bool (*ChangeTexturePalette)(SDL_Renderer *renderer, SDL_Texture *texture);
bool (*UpdateTexture)(SDL_Renderer *renderer, SDL_Texture *texture,
const SDL_Rect *rect, const void *pixels,
int pitch);
@@ -301,6 +314,9 @@ struct SDL_Renderer
SDL_Texture *target;
SDL_Mutex *target_mutex;
// The list of palettes
SDL_HashTable *palettes;
SDL_Colorspace output_colorspace;
float SDR_white_point;
float HDR_headroom;