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Don't assume HDR headroom for HDR10 surfaces

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Applications that support HDR will set the correct values for their content.
This commit is contained in:
Sam Lantinga
2024-03-02 15:02:17 -08:00
parent c74f273848
commit 7f9ff6277c
4 changed files with 16 additions and 35 deletions
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5
src/video/SDL_surface.c
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@@ -355,11 +355,6 @@ float SDL_GetSurfaceHDRHeadroom(SDL_Surface *surface, SDL_Colorspace colorspace)
} else {
props = 0;
}
if (transfer == SDL_TRANSFER_CHARACTERISTICS_PQ) {
/* The official definition is 10000, but PQ game content is often mastered for 400 or 1000 nits */
const int DEFAULT_PQ_MAXCLL = 1000;
default_value = (float)SDL_GetNumberProperty(props, SDL_PROP_SURFACE_MAXCLL_NUMBER, DEFAULT_PQ_MAXCLL) / SDL_GetSurfaceSDRWhitePoint(surface, colorspace);
}
return SDL_GetFloatProperty(props, SDL_PROP_SURFACE_HDR_HEADROOM_FLOAT, default_value);
}
return 1.0f;