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Fix: Cycles magic texture differs from OSL and EEVEE

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The wrapping introduced in 57f46b9d5f was different for SVM than other
implementations, multiplying scale at a different point.

Pull Request: https://projects.blender.org/blender/blender/pulls/157532
This commit is contained in:
Brecht Van Lommel 2026-04-20 13:35:22 +02:00 • committed by Brecht Van Lommel
parent e73813f5aa
commit 577d93f283
1 changed files with 6 additions and 6 deletions
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12
intern/cycles/kernel/svm/magic.h
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@ -28,13 +28,13 @@ ccl_device_noinline_cpu float3 svm_magic(const float3 p,
* smaller value. This is due to the value in the -2*PI to 2*PI range
* effectively being lost due to floating point precision.
*/
const float px = fmodf(p.x, M_2PI_F);
const float py = fmodf(p.y, M_2PI_F);
const float pz = fmodf(p.z, M_2PI_F);
const float px = fmodf(p.x * scale, M_2PI_F);
const float py = fmodf(p.y * scale, M_2PI_F);
const float pz = fmodf(p.z * scale, M_2PI_F);
float x = sinf((px + py + pz) * 5.0f * scale);
float y = cosf((-px + py - pz) * 5.0f * scale);
float z = -cosf((-px - py + pz) * 5.0f * scale);
float x = sinf((px + py + pz) * 5.0f);
float y = cosf((-px + py - pz) * 5.0f);
float z = -cosf((-px - py + pz) * 5.0f);
if (n > 0) {
x *= distortion;