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Cycles: Fix wrong camera-in-volume stack when camera ray hits volume domain twice

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This commit is contained in:
Sergey Sharybin
2016-04-01 18:03:58 +02:00
parent 0f6f921898
commit ce44ffd74f
1 changed files with 13 additions and 8 deletions
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15
intern/cycles/kernel/kernel_volume.h
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@@ -1010,17 +1010,22 @@ ccl_device void kernel_volume_stack_init(KernelGlobals *kg,
ShaderData sd; ShaderData sd;
shader_setup_from_ray(kg, &sd, isect, &volume_ray); shader_setup_from_ray(kg, &sd, isect, &volume_ray);
if(sd.flag & SD_BACKFACING) { if(sd.flag & SD_BACKFACING) {
bool need_add = true;
for(int i = 0; stack[i].shader != SHADER_NONE; ++i) {
/* If ray exited the volume and never entered to that volume /* If ray exited the volume and never entered to that volume
* it means that camera is inside such a volume. * it means that camera is inside such a volume.
*/ */
bool is_enclosed = false; if(i < enclosed_index && enclosed_volumes[i] == sd.object) {
for(int i = 0; i < enclosed_index; ++i) { need_add = false;
if(enclosed_volumes[i] == sd.object) { break;
is_enclosed = true; }
/* Don't add intersections twice. */
if(stack[i].object == sd.object) {
need_add = false;
break; break;
} }
} }
if(is_enclosed == false) { if(need_add) {
stack[stack_index].object = sd.object; stack[stack_index].object = sd.object;
stack[stack_index].shader = sd.shader; stack[stack_index].shader = sd.shader;
++stack_index; ++stack_index;