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Added the Chrome HDR tonemap operator

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Also added support for the SDL_PIXELFORMAT_XBGR2101010 pixel format to the D3D12, D3D11, and Metal renderers.
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Sam Lantinga 2024-02-21 09:03:03 -08:00
parent 4ba6aeee9d
commit 54c2ba6afd
50 changed files with 15111 additions and 21123 deletions
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4
include/SDL3/SDL_surface.h
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@ -212,9 +212,9 @@ extern DECLSPEC void SDLCALL SDL_DestroySurface(SDL_Surface *surface);
* for YUV surfaces.
* - `SDL_PROP_SURFACE_MAXCLL_NUMBER`: MaxCLL (Maximum Content Light Level) indicates the maximum light level of any single pixel (in cd/m2 or nits) of the content. MaxCLL is usually measured off the final delivered content after mastering. If one uses the full light level of the HDR mastering display and adds a hard clip at its maximum value, MaxCLL would be equal to the peak luminance of the mastering monitor. This defaults to 400 for HDR10 surfaces.
* - `SDL_PROP_SURFACE_MAXFALL_NUMBER`: MaxFALL (Maximum Frame Average Light Level) indicates the maximum value of the frame average light level (in cd/m2 or nits) of the content. MaxFALL is calculated by averaging the decoded luminance values of all the pixels within a frame. MaxFALL is usually much lower than MaxCLL.
* - `SDL_PROP_SURFACE_SDR_WHITE_POINT_FLOAT`: for HDR10 and floating point surfaces, this defines the value of 100% diffuse white, with higher values being displayed in the High Dynamic Range headroom. This defaults to 100 for surfaces using the PQ colorspace and 1.0 for other surfaces.
* - `SDL_PROP_SURFACE_SDR_WHITE_POINT_FLOAT`: for HDR10 and floating point surfaces, this defines the value of 100% diffuse white, with higher values being displayed in the High Dynamic Range headroom. This defaults to 100 for HDR10 surfaces and 1.0 for other surfaces.
* - `SDL_PROP_SURFACE_HDR_HEADROOM_FLOAT`: for HDR10 and floating point surfaces, this defines the maximum dynamic range used by the content, in terms of the SDR white point. This defaults to SDL_PROP_SURFACE_MAXCLL_NUMBER / SDL_PROP_SURFACE_SDR_WHITE_POINT_FLOAT, or 4.0, for HDR10 surfaces.
* - `SDL_PROP_SURFACE_TONEMAP_OPERATOR_STRING`: the tone mapping operator used when converting between different SDR/HDR ranges. Currently this supports the form "*=N", where N is a floating point scale factor applied in linear space.
* - `SDL_PROP_SURFACE_TONEMAP_OPERATOR_STRING`: the tone mapping operator used when compressing from a surface with high dynamic range to another with lower dynamic range. Currently this supports "chrome", which uses the same tone mapping that Chrome uses for HDR content, the form "*=N", where N is a floating point scale factor applied in linear space, and "none", which disables tone mapping. This defaults to "chrome".
*
* \param surface the SDL_Surface structure to query
* \returns a valid property ID on success or 0 on failure; call