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/*
* Copyright 2011-2013 Blender Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef __BVH_TYPES__
#define __BVH_TYPES__
CCL_NAMESPACE_BEGIN
/* Don't inline intersect functions on GPU, this is faster */
#ifdef __KERNEL_GPU__
# define ccl_device_intersect ccl_device_forceinline
#else
# define ccl_device_intersect ccl_device_inline
#endif
/* bottom-most stack entry, indicating the end of traversal */
#define ENTRYPOINT_SENTINEL 0x76543210
/* 64 object BVH + 64 mesh BVH + 64 object node splitting */
#define BVH_STACK_SIZE 192
#define BVH_QSTACK_SIZE 384
#define BVH_OSTACK_SIZE 768
/* BVH intersection function variations */
#define BVH_INSTANCING 1
#define BVH_MOTION 2
#define BVH_HAIR 4
#define BVH_NAME_JOIN(x, y) x##_##y
#define BVH_NAME_EVAL(x, y) BVH_NAME_JOIN(x, y)
#define BVH_FUNCTION_FULL_NAME(prefix) BVH_NAME_EVAL(prefix, BVH_FUNCTION_NAME)
#define BVH_FEATURE(f) (((BVH_FUNCTION_FEATURES) & (f)) != 0)
/* Debugging heleprs */
#ifdef __KERNEL_DEBUG__
# define BVH_DEBUG_INIT() \
do { \
isect->num_traversed_nodes = 0; \
isect->num_traversed_instances = 0; \
isect->num_intersections = 0; \
} while (0)
# define BVH_DEBUG_NEXT_NODE() \
do { \
++isect->num_traversed_nodes; \
} while (0)
# define BVH_DEBUG_NEXT_INTERSECTION() \
do { \
++isect->num_intersections; \
} while (0)
# define BVH_DEBUG_NEXT_INSTANCE() \
do { \
++isect->num_traversed_instances; \
} while (0)
#else /* __KERNEL_DEBUG__ */
# define BVH_DEBUG_INIT()
# define BVH_DEBUG_NEXT_NODE()
# define BVH_DEBUG_NEXT_INTERSECTION()
# define BVH_DEBUG_NEXT_INSTANCE()
#endif /* __KERNEL_DEBUG__ */
CCL_NAMESPACE_END
#endif /* __BVH_TYPES__ */
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