[Bf-blender-cvs] [086ec8a] master: Cycles: Support proper visibility check in single volume intersection step for QBVH

[Sergey Sharybin]

Commit: 086ec8af485402f1cce5e8705de4ade07c741dbc
Author: Sergey Sharybin
Date:   Thu Aug 25 11:13:35 2016 +0200
Branches: master
https://developer.blender.org/rB086ec8af485402f1cce5e8705de4ade07c741dbc

Cycles: Support proper visibility check in single volume intersection step for QBVH

===================================================================

M	intern/cycles/kernel/bvh/qbvh_volume.h

===================================================================

diff --git a/intern/cycles/kernel/bvh/qbvh_volume.h b/intern/cycles/kernel/bvh/qbvh_volume.h
index b4f334e..847a11d 100644
--- a/intern/cycles/kernel/bvh/qbvh_volume.h
+++ b/intern/cycles/kernel/bvh/qbvh_volume.h
@@ -236,6 +236,14 @@ ccl_device bool BVH_FUNCTION_FULL_NAME(QBVH)(KernelGlobals *kg,
 			/* If node is leaf, fetch triangle list. */
 			if(node_addr < 0) {
 				float4 leaf = kernel_tex_fetch(__bvh_leaf_nodes, (-node_addr-1));
+
+				if((__float_as_uint(leaf.z) & visibility) == 0) {
+					/* Pop. */
+					node_addr = traversal_stack[stack_ptr].addr;
+					--stack_ptr;
+					continue;
+				}
+
 				int prim_addr = __float_as_int(leaf.x);
 
 #if BVH_FEATURE(BVH_INSTANCING)