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Fix T69776: Error with complex Eevee noise texture in some drivers

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Apparently the compiled shader bump into some register limit and
the compiler instead of giving an error, does something incorrectly.

Differential Revision: https://developer.blender.org/D6759
This commit is contained in:
Patrick Bender
2020-02-05 22:53:53 -03:00
committed by mano-wii
parent 092deb88b0
commit b4f8e3f01b
3 changed files with 24 additions and 29 deletions
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7
source/blender/gpu/shaders/material/gpu_shader_material_math_util.glsl
View File

@@ -48,13 +48,6 @@ int quick_floor(float x)
return int(x) - ((x < 0) ? 1 : 0);
}
float floorfrac(float x, out int i)
{
float x_floor = floor(x);
i = int(x_floor);
return x - x_floor;
}
/* Vector Math */
vec2 safe_divide(vec2 a, vec2 b)

42
source/blender/gpu/shaders/material/gpu_shader_material_noise.glsl
View File

@@ -1,3 +1,7 @@
/* clang-format off */
#define FLOORFRAC(x, x_int, x_fract) { float x_floor = floor(x); x_int = int(x_floor); x_fract = x - x_floor; }
/* clang-format on */
/* Bilinear Interpolation:
*
* v2 v3
@@ -124,7 +128,10 @@ float noise_grad(uint hash, float x, float y, float z, float w)
float noise_perlin(float x)
{
int X;
float fx = floorfrac(x, X);
float fx;
FLOORFRAC(x, X, fx);
float u = fade(fx);
float r = mix(noise_grad(hash_int(X), fx), noise_grad(hash_int(X + 1), fx - 1.0), u);
@@ -134,11 +141,11 @@ float noise_perlin(float x)
float noise_perlin(vec2 vec)
{
int X;
int Y;
int X, Y;
float fx, fy;
float fx = floorfrac(vec.x, X);
float fy = floorfrac(vec.y, Y);
FLOORFRAC(vec.x, X, fx);
FLOORFRAC(vec.y, Y, fy);
float u = fade(fx);
float v = fade(fy);
@@ -155,13 +162,12 @@ float noise_perlin(vec2 vec)
float noise_perlin(vec3 vec)
{
int X;
int Y;
int Z;
int X, Y, Z;
float fx, fy, fz;
float fx = floorfrac(vec.x, X);
float fy = floorfrac(vec.y, Y);
float fz = floorfrac(vec.z, Z);
FLOORFRAC(vec.x, X, fx);
FLOORFRAC(vec.y, Y, fy);
FLOORFRAC(vec.z, Z, fz);
float u = fade(fx);
float v = fade(fy);
@@ -184,15 +190,13 @@ float noise_perlin(vec3 vec)
float noise_perlin(vec4 vec)
{
int X;
int Y;
int Z;
int W;
int X, Y, Z, W;
float fx, fy, fz, fw;
float fx = floorfrac(vec.x, X);
float fy = floorfrac(vec.y, Y);
float fz = floorfrac(vec.z, Z);
float fw = floorfrac(vec.w, W);
FLOORFRAC(vec.x, X, fx);
FLOORFRAC(vec.y, Y, fy);
FLOORFRAC(vec.z, Z, fz);
FLOORFRAC(vec.w, W, fw);
float u = fade(fx);
float v = fade(fy);