Brecht Van Lommel
bdab538b30
* Port over new code tables from Cycles * Convert Rec.709 to scene linear for lookup table. * Move code for wavelength and blackbody to IMB so they can access the required transforms, which are not in blenlib. * Remove clamping from blackbody shader to bypass the texture read. Since it's variable now easiest to just always read from the texture than pass additional parameters. * Fold XYZ to RGB conversion into the wavelength table. Ref T68926
8 lines
325 B
GLSL
8 lines
325 B
GLSL
void node_wavelength(float wavelength, sampler1DArray spectrummap, float layer, out vec4 color)
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{
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float t = (wavelength - 380.0) / (780.0 - 380.0);
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vec3 rgb = texture(spectrummap, vec2(t, layer)).rgb;
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rgb *= 1.0 / 2.52; /* Empirical scale from lg to make all comps <= 1. */
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color = vec4(clamp(rgb, 0.0, 1.0), 1.0);
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}
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