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Fix #119903: Cycles compilation on device that don't use the light tree 

During the some of the shading for volumetrics, Cycles would try to
write to a variable that does not exist if the device has the
light tree disabled.

At the moment this only impacts AMD GPUs with the Metal backend.

Pull Request: https://projects.blender.org/blender/blender/pulls/119906
This commit is contained in:
Alaska 2024-03-26 08:20:09 +01:00 committed by Weizhen Huang
parent 155dae94d7
commit a4f1a52a5c
1 changed files with 2 additions and 0 deletions
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2
intern/cycles/kernel/integrator/shade_volume.h
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@ -944,7 +944,9 @@ ccl_device_forceinline bool integrate_volume_phase_scatter(
INTEGRATOR_STATE_WRITE(state, ray, P) = sd->P;
INTEGRATOR_STATE_WRITE(state, ray, D) = normalize(phase_wo);
INTEGRATOR_STATE_WRITE(state, ray, tmin) = 0.0f;
#ifdef __LIGHT_TREE__
INTEGRATOR_STATE_WRITE(state, ray, previous_dt) = ray->tmax - ray->tmin;
#endif
INTEGRATOR_STATE_WRITE(state, ray, tmax) = FLT_MAX;
# ifdef __RAY_DIFFERENTIALS__
INTEGRATOR_STATE_WRITE(state, ray, dP) = differential_make_compact(sd->dP);