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Fix T69044: OpenCL fail due to bad fract function. 

The fract function in OpenCL does more than just return the fraction.
It also writes the floor to the second argument. Which wasn't put
in consideration.

Instead, we use a simple `a - floor(a)` like the Math node.

Reviewers: brecht

Differential Revision: https://developer.blender.org/D5553
This commit is contained in:
OmarSquircleArt 2019-08-22 13:47:24 +02:00
parent b208096538
commit c6f8ea7b45
Notes: blender-bot 2023-02-14 10:04:50 +01:00 
Referenced by issue #69044, Split kernel error: failed to load kernel_path_init
2 changed files with 1 additions and 7 deletions
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2
intern/cycles/kernel/svm/svm_math_util.h
View File

@ -69,7 +69,7 @@ ccl_device void svm_vector_math(
*vector = make_float3(safe_modulo(a.x, b.x), safe_modulo(a.y, b.y), safe_modulo(a.z, b.z));
break;
case NODE_VECTOR_MATH_FRACTION:
*vector = fract(a);
*vector = a - floor(a);
break;
case NODE_VECTOR_MATH_ABSOLUTE:
*vector = fabs(a);

6
intern/cycles/util/util_math_float3.h
View File

@ -61,7 +61,6 @@ ccl_device_inline float3 rcp(const float3 &a);
ccl_device_inline float3 sqrt(const float3 &a);
ccl_device_inline float3 floor(const float3 &a);
ccl_device_inline float3 ceil(const float3 &a);
ccl_device_inline float3 fract(const float3 &a);
#endif /* !__KERNEL_OPENCL__ */
ccl_device_inline float min3(float3 a);
@ -313,11 +312,6 @@ ccl_device_inline float3 ceil(const float3 &a)
# endif
}
ccl_device_inline float3 fract(const float3 &a)
{
return a - floor(a);
}
ccl_device_inline float3 mix(const float3 &a, const float3 &b, float t)
{
return a + t * (b - a);