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OpenMW/files/shaders/lib/material/parallax.glsl
2023-02-25 11:03:39 -08:00

13 lines
360 B
GLSL

#ifndef LIB_MATERIAL_PARALLAX
#define LIB_MATERIAL_PARALLAX
#define PARALLAX_SCALE 0.04
#define PARALLAX_BIAS -0.02
vec2 getParallaxOffset(vec3 eyeDir, mat3 tbnTranspose, float height, float flipY)
{
vec3 TSeyeDir = normalize(eyeDir * tbnTranspose);
return vec2(TSeyeDir.x, TSeyeDir.y * flipY) * ( height * PARALLAX_SCALE + PARALLAX_BIAS );
}
#endif