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GLSL: Fix voronoi texture giving different results form rendered

This commit is contained in:
Sergey Sharybin 2016-05-30 13:07:11 +02:00
parent 673fabbb64
commit da975c59c2
1 changed files with 9 additions and 3 deletions
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12
source/blender/gpu/shaders/gpu_shader_material.glsl
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@ -2403,6 +2403,12 @@ int floor_to_int(float x)
{
return int(floor(x));
}
int quick_floor(float x)
{
return int(x) - ((x < 0) ? 1 : 0);
}
#ifdef BIT_OPERATIONS
float integer_noise(int n)
{
@ -2453,9 +2459,9 @@ float bits_to_01(uint bits)
float cellnoise(vec3 p)
{
int ix = floor_to_int(p.x);
int iy = floor_to_int(p.y);
int iz = floor_to_int(p.z);
int ix = quick_floor(p.x);
int iy = quick_floor(p.y);
int iz = quick_floor(p.z);
return bits_to_01(hash(uint(ix), uint(iy), uint(iz)));
}