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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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21
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;
shader_setup_from_ray(kg, &sd, isect, &volume_ray);
if(sd.flag & SD_BACKFACING) {
/* If ray exited the volume and never entered to that volume
* it means that camera is inside such a volume.
*/
bool is_enclosed = false;
for(int i = 0; i < enclosed_index; ++i) {
if(enclosed_volumes[i] == sd.object) {
is_enclosed = true;
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
* it means that camera is inside such a volume.
*/
if(i < enclosed_index && enclosed_volumes[i] == sd.object) {
need_add = false;
break;
}
/* Don't add intersections twice. */
if(stack[i].object == sd.object) {
need_add = false;
break;
}
}
if(is_enclosed == false) {
if(need_add) {
stack[stack_index].object = sd.object;
stack[stack_index].shader = sd.shader;
++stack_index;