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convert png from srgb to linear

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This commit is contained in:
Harvey Fong 2025-03-22 14:54:06 -06:00
parent 8e026a3e96
commit 5e24db54f8
1 changed files with 12 additions and 1 deletions
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13
vmax2bella.cpp
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@ -210,6 +210,12 @@ struct RGBA {
unsigned char r, g, b, a; unsigned char r, g, b, a;
}; };
static DL_FI dl::Float srgbToLinear( dl::Float value )
{
return ( value <= 0.04045f ) ?
( value * ( 1.0f/12.92f ) ) :
( powf( ( value + 0.055f ) * ( 1.0f/1.055f ), 2.4f ) );
}
int writeBszScene( const std::string& bszPath, const plist_t root_node, const std::vector<RGBA> palette); int writeBszScene( const std::string& bszPath, const plist_t root_node, const std::vector<RGBA> palette);
bool debugSnapshots(plist_t element, int snapshotIndex, int zIndex); bool debugSnapshots(plist_t element, int snapshotIndex, int zIndex);
@ -1570,7 +1576,12 @@ void writeBellaVoxels(const plist_t& root_node,
//dielectric["depth"] = 33.0f; //dielectric["depth"] = 33.0f;
// Set the material color (convert 0-255 values to 0.0-1.0 range) // Set the material color (convert 0-255 values to 0.0-1.0 range)
voxMat["reflectance"] = dl::Rgba{ dR, dG, dB, dA }; voxMat["reflectance"] = dl::Rgba{
srgbToLinear(dR),
srgbToLinear(dG),
srgbToLinear(dB),
dA
};
} }
} }