ToneMappingNode: properly handle alpha #29076
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WestLangley
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Aug 7, 2024
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WestLangley
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Aug 7, 2024
WestLangley
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Aug 7, 2024
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For WebGLRenderer, the input to the tone mapping function is
vec3 color.However, for WebGPURenderer, the input is
vec4 color. (And, since it is implemented as a post processing step, the RGB components have premultiplied alpha -- but that is not an issue here.)The tone mapping operation and color space transform should be applied to the RGB channels only. The alpha channel should remain unchanged.