a43c7538b8
This patch adds wavelength node support to Eevee, similar to how Eevee Blackbody node works, thus it is a little off from Cycles. Reviewed By: #eevee_viewport, fclem, brecht Differential Revision: https://developer.blender.org/D11326
16 lines
583 B
GLSL
16 lines
583 B
GLSL
void node_wavelength(float wavelength,
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sampler1DArray spectrummap,
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float layer,
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vec3 xyz_to_r,
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vec3 xyz_to_g,
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vec3 xyz_to_b,
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out vec4 color)
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{
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mat3 xyz_to_rgb = mat3(xyz_to_r, xyz_to_g, xyz_to_b);
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float t = (wavelength - 380.0) / (780.0 - 380.0);
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vec3 xyz = texture(spectrummap, vec2(t, layer)).rgb;
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vec3 rgb = xyz * xyz_to_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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