17 lines
687 B
GLSL
17 lines
687 B
GLSL
#include "../sampler.glsl"
|
|
|
|
/*
|
|
contributors: Patricio Gonzalez Vivo
|
|
description: Standar way to get normals from a normal map
|
|
use: sampleNormal(<SAMPLER_TYPE> tex, <vec2> st)
|
|
options:
|
|
- SAMPLER_FNC(TEX, UV): optional depending the target version of GLSL (texture2D(...) or texture(...))
|
|
license:
|
|
- Copyright (c) 2021 Patricio Gonzalez Vivo under Prosperity License - https://prosperitylicense.com/versions/3.0.0
|
|
- Copyright (c) 2021 Patricio Gonzalez Vivo under Patron License - https://lygia.xyz/license
|
|
*/
|
|
|
|
#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
|