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gpu_shader_material: Correct incorrect glsl texture of Voronoi, Noise, and Musgrave on some Intel GPUs

This commit is contained in:
Germano Cavalcante 2018-01-31 22:31:08 -02:00
parent ea31f0ac3b
commit 42ca1fe89c
1 changed files with 23 additions and 12 deletions
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35
source/blender/gpu/shaders/gpu_shader_material.glsl
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@ -2478,8 +2478,7 @@ uint hash(int kx, int ky, int kz)
float bits_to_01(uint bits)
{
float x = float(bits) * (1.0 / float(0xffffffffu));
return x;
return (float(bits) / 4294967295.0);
}
float cellnoise(vec3 p)
@ -3314,17 +3313,29 @@ float noise_perlin(float x, float y, float z)
float v = noise_fade(fy);
float w = noise_fade(fz);
float result;
float noise_u[2], noise_v[2];
result = noise_nerp(w, noise_nerp(v, noise_nerp(u, noise_grad(hash(X, Y, Z), fx, fy, fz),
noise_grad(hash(X + 1, Y, Z), fx - 1.0, fy, fz)),
noise_nerp(u, noise_grad(hash(X, Y + 1, Z), fx, fy - 1.0, fz),
noise_grad(hash(X + 1, Y + 1, Z), fx - 1.0, fy - 1.0, fz))),
noise_nerp(v, noise_nerp(u, noise_grad(hash(X, Y, Z + 1), fx, fy, fz - 1.0),
noise_grad(hash(X + 1, Y, Z + 1), fx - 1.0, fy, fz - 1.0)),
noise_nerp(u, noise_grad(hash(X, Y + 1, Z + 1), fx, fy - 1.0, fz - 1.0),
noise_grad(hash(X + 1, Y + 1, Z + 1), fx - 1.0, fy - 1.0, fz - 1.0))));
return noise_scale3(result);
noise_u[0] = noise_nerp(u,
noise_grad(hash(X, Y, Z), fx, fy, fz),
noise_grad(hash(X + 1, Y, Z), fx - 1.0, fy, fz));
noise_u[1] = noise_nerp(u,
noise_grad(hash(X, Y + 1, Z), fx, fy - 1.0, fz),
noise_grad(hash(X + 1, Y + 1, Z), fx - 1.0, fy - 1.0, fz));
noise_v[0] = noise_nerp(v, noise_u[0], noise_u[1]);
noise_u[0] = noise_nerp(u,
noise_grad(hash(X, Y, Z + 1), fx, fy, fz - 1.0),
noise_grad(hash(X + 1, Y, Z + 1), fx - 1.0, fy, fz - 1.0));
noise_u[1] = noise_nerp(u,
noise_grad(hash(X, Y + 1, Z + 1), fx, fy - 1.0, fz - 1.0),
noise_grad(hash(X + 1, Y + 1, Z + 1), fx - 1.0, fy - 1.0, fz - 1.0));
noise_v[1] = noise_nerp(v, noise_u[0], noise_u[1]);
return noise_scale3(noise_nerp(w, noise_v[0], noise_v[1]));
}
float noise(vec3 p)