Cycles: Replace use_qbvh boolean flag with an enum-based property

This was we can introduce other types of BVH, for example, wider ones, without
causing too much mess around boolean flags.

Thoughs:

- Ideally device info should probably return bitflag of what BVH types it
  supports.

  It is possible to implement based on simple logic in device/ and mesh.cpp,
  rest of the changes will stay the same.

- Not happy with workarounds in util_debug and duplicated enum in kernel.
  Maybe enbum should be stores in kernel, but then it's kind of weird to include
  kernel types from utils. Soudns some cyclkic dependency.

Reviewers: brecht, maxim_d33

Reviewed By: brecht

Differential Revision: https://developer.blender.org/D3011

1 files changed, 1 insertions, 1 deletions

diff --git a/intern/cycles/bvh/bvh4.cpp b/intern/cycles/bvh/bvh4.cpp
index b910feccec8..4faf47af7bb 100644
--- a/intern/cycles/bvh/bvh4.cpp
+++ b/intern/cycles/bvh/bvh4.cpp
@@ -55,7 +55,7 @@ static bool node_qbvh_is_unaligned(const BVHNode *node)
 BVH4::BVH4(const BVHParams& params_, const vector<Object*>& objects_)
 : BVH(params_, objects_)
 {
-	params.use_qbvh = true;
+	params.bvh_layout = BVH_LAYOUT_BVH4;
 }
 
 void BVH4::pack_leaf(const BVHStackEntry& e, const LeafNode *leaf)