lygia/v1.1.6/color/palette/spectral/gems)from GPU Gems https://developer.nvidia.com/sites/all/modules/custom/gpugems/books/GPUGems/gpugems_ch08.html (https://www.shadertoy.com/view/ls2Bz1)
Dependencies:
Use:
<vec3> spectral_gems(<float> x)
#ifndef FNC_SPECTRAL_GEMS
#define FNC_SPECTRAL_GEMS
vec3 spectral_gems (float x) {
return bump(vec3( 4. * (x - 0.75), // Red
4. * (x - 0.5), // Green
4. * (x - 0.25) // Blue
) );
}
#endif
Dependencies:
Use:
<float3> spectral_gems(<float> x)
#ifndef FNC_SPECTRAL_GEMS
#define FNC_SPECTRAL_GEMS
float3 spectral_gems (float x) {
return bump(float3( 4. * (x - 0.75), // Red
4. * (x - 0.5), // Green
4. * (x - 0.25) // Blue
) );
}
#endif
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