Fix cycles error for heterogenous volumes, causing double step size to be used.

This gives longer render times due to smaller step size, double it to get
something more like the previous behavior.

1 files changed, 2 insertions, 2 deletions

diff --git a/intern/cycles/kernel/kernel_volume.h b/intern/cycles/kernel/kernel_volume.h
index 31c601a7056..b72774be2fb 100644
--- a/intern/cycles/kernel/kernel_volume.h
+++ b/intern/cycles/kernel/kernel_volume.h
@@ -151,7 +151,7 @@ ccl_device void kernel_volume_shadow_heterogeneous(KernelGlobals *kg, PathState
 
 	for(int i = 0; i < max_steps; i++) {
 		/* advance to new position */
-		float new_t = min(ray->t, t + random_jitter_offset + i * step);
+		float new_t = min(ray->t, random_jitter_offset + i * step);
 		float3 new_P = ray->P + ray->D * new_t;
 		float3 new_sigma_t;
 
@@ -398,7 +398,7 @@ ccl_device VolumeIntegrateResult kernel_volume_integrate_heterogeneous(KernelGlo
 
 	for(int i = 0; i < max_steps; i++) {
 		/* advance to new position */
-		float new_t = min(ray->t, t + random_jitter_offset + i * step);
+		float new_t = min(ray->t, random_jitter_offset + i * step);
 		float3 new_P = ray->P + ray->D * new_t;
 		VolumeShaderCoefficients new_coeff;