lygia/sample/normalMap)Standar way to get normals from a normal map
Dependencies:
Use:
sampleNormal(<SAMPLER_TYPE> tex, <vec2> st)
#ifndef FNC_SAMPLENORMALMAP
#define FNC_SAMPLENORMALMAP
vec3 sampleNormalMap(in SAMPLER_TYPE tex, in vec2 st) { return SAMPLER_FNC(tex, st).xyz * 2.0 - 1.0; }
#endif
Dependencies:
Use:
sampleNormal(<SAMPLER_TYPE> tex, <float2> st)
#ifndef FNC_SAMPLENORMALMAP
#define FNC_SAMPLENORMALMAP
float3 sampleNormalMap(in SAMPLER_TYPE tex, in float2 st) { return SAMPLER_FNC(tex, st).xyz * 2.0 - 1.0; }
#endif
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