LYGIA Shader Library

bumpMap (lygia/sample/bumpMap)

Converts a RGB normal map into normal vectors

Dependencies:

Use:

SAMPLEBUMPMap(<SAMPLER_TYPE> texture, <vec2> st, <vec2> pixel)

Check it on Github


#ifndef SAMPLEBUMPMAP_Z
#define SAMPLEBUMPMAP_Z .01
#endif

#ifndef FNC_SAMPLEBUMPMAP
#define FNC_SAMPLEBUMPMAP
vec3 sampleBumpMap(SAMPLER_TYPE tex, vec2 st, vec2 pixel) {
    vec2 deltas = sampleDerivative(tex, st, pixel);
    return normalize( vec3(deltas, SAMPLEBUMPMAP_Z) );
}
#endif

Dependencies:

Use:

SAMPLEBUMPMap(<SAMPLER_TYPE> texture, <float2> st, <float2> pixel)

Check it on Github


#ifndef SAMPLEBUMPMAP_Z
#define SAMPLEBUMPMAP_Z .01
#endif

#ifndef FNC_SAMPLEBUMPMAP
#define FNC_SAMPLEBUMPMAP
float3 sampleBumpMap(SAMPLER_TYPE tex, float2 st, float2 pixel) {
    float2 deltas = sampleDerivative(tex, st, pixel);
    return normalize(float3(deltas.x, deltas.y, SAMPLEBUMPMAP_Z) );
}
#endif

Licenses

LYGIA is dual-licensed under the Prosperity License and the Patron License for sponsors and contributors.

Sponsors and contributors are automatically added to the Patron License and they can ignore the any non-commercial rule of the Prosperity Licensed software (please take a look to the exception).

It's also possible to get a permanent comercial license hook to a single and specific version of LYGIA.

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