forked from bartvdbraak/blender
73f2056052
This is an initial implementation of BVH8 optimization structure
and packated triangle intersection. The aim is to get faster ray
to scene intersection checks.
Scene BVH4 BVH8
barbershop_interior 10:24.94 10:10.74
bmw27 02:41.25 02:38.83
classroom 08:16.49 07:56.15
fishy_cat 04:24.56 04:17.29
koro 06:03.06 06:01.45
pavillon_barcelona 09:21.26 09:02.98
victor 23:39.65 22:53.71
As memory goes, peak usage raises by about 4.7% in a complex
scenes.
Note that BVH8 is disabled when using OSL, this is because OSL
kernel does not get per-microarchitecture optimizations and
hence always considers BVH3 is used.
Original BVH8 patch from Anton Gavrikov.
Batched triangles intersection from Victoria Zhislina.
Extra work and tests and fixes from Maxym Dmytrychenko.
157 lines
4.4 KiB
C++
157 lines
4.4 KiB
C++
/*
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* Copyright 2011-2013 Blender Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __KERNEL_COMPAT_CPU_H__
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#define __KERNEL_COMPAT_CPU_H__
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#define __KERNEL_CPU__
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/* Release kernel has too much false-positive maybe-uninitialized warnings,
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* which makes it possible to miss actual warnings.
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*/
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#if (defined(__GNUC__) && !defined(__clang__)) && defined(NDEBUG)
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# pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
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# pragma GCC diagnostic ignored "-Wuninitialized"
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#endif
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/* Selective nodes compilation. */
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#ifndef __NODES_MAX_GROUP__
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# define __NODES_MAX_GROUP__ NODE_GROUP_LEVEL_MAX
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#endif
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#ifndef __NODES_FEATURES__
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# define __NODES_FEATURES__ NODE_FEATURE_ALL
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#endif
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#include "util/util_math.h"
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#include "util/util_simd.h"
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#include "util/util_half.h"
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#include "util/util_types.h"
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#include "util/util_texture.h"
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#define ccl_addr_space
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#define ccl_local_id(d) 0
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#define ccl_global_id(d) (kg->global_id[d])
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#define ccl_local_size(d) 1
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#define ccl_global_size(d) (kg->global_size[d])
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#define ccl_group_id(d) ccl_global_id(d)
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#define ccl_num_groups(d) ccl_global_size(d)
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/* On x86_64, versions of glibc < 2.16 have an issue where expf is
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* much slower than the double version. This was fixed in glibc 2.16.
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*/
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#if !defined(__KERNEL_GPU__) && defined(__x86_64__) && defined(__x86_64__) && \
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defined(__GNU_LIBRARY__) && defined(__GLIBC__ ) && defined(__GLIBC_MINOR__) && \
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(__GLIBC__ <= 2 && __GLIBC_MINOR__ < 16)
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# define expf(x) ((float)exp((double)(x)))
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#endif
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CCL_NAMESPACE_BEGIN
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/* Assertions inside the kernel only work for the CPU device, so we wrap it in
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* a macro which is empty for other devices */
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#define kernel_assert(cond) assert(cond)
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/* Texture types to be compatible with CUDA textures. These are really just
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* simple arrays and after inlining fetch hopefully revert to being a simple
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* pointer lookup. */
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template<typename T> struct texture {
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ccl_always_inline const T& fetch(int index)
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{
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kernel_assert(index >= 0 && index < width);
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return data[index];
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}
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#if defined(__KERNEL_AVX__) || defined(__KERNEL_AVX2__)
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/* Reads 256 bytes but indexes in blocks of 128 bytes to maintain
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* compatibility with existing indicies and data structures.
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*/
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ccl_always_inline avxf fetch_avxf(const int index)
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{
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kernel_assert(index >= 0 && (index+1) < width);
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ssef *ssef_data = (ssef*)data;
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ssef *ssef_node_data = &ssef_data[index];
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return _mm256_loadu_ps((float *)ssef_node_data);
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}
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#endif
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#ifdef __KERNEL_SSE2__
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ccl_always_inline ssef fetch_ssef(int index)
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{
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kernel_assert(index >= 0 && index < width);
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return ((ssef*)data)[index];
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}
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ccl_always_inline ssei fetch_ssei(int index)
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{
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kernel_assert(index >= 0 && index < width);
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return ((ssei*)data)[index];
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}
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#endif
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T *data;
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int width;
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};
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/* Macros to handle different memory storage on different devices */
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#define kernel_tex_fetch(tex, index) (kg->tex.fetch(index))
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#define kernel_tex_fetch_avxf(tex, index) (kg->tex.fetch_avxf(index))
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#define kernel_tex_fetch_ssef(tex, index) (kg->tex.fetch_ssef(index))
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#define kernel_tex_fetch_ssei(tex, index) (kg->tex.fetch_ssei(index))
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#define kernel_tex_lookup(tex, t, offset, size) (kg->tex.lookup(t, offset, size))
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#define kernel_tex_array(tex) (kg->tex.data)
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#define kernel_data (kg->__data)
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#ifdef __KERNEL_SSE2__
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typedef vector3<sseb> sse3b;
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typedef vector3<ssef> sse3f;
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typedef vector3<ssei> sse3i;
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ccl_device_inline void print_sse3b(const char *label, sse3b& a)
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{
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print_sseb(label, a.x);
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print_sseb(label, a.y);
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print_sseb(label, a.z);
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}
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ccl_device_inline void print_sse3f(const char *label, sse3f& a)
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{
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print_ssef(label, a.x);
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print_ssef(label, a.y);
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print_ssef(label, a.z);
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}
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ccl_device_inline void print_sse3i(const char *label, sse3i& a)
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{
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print_ssei(label, a.x);
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print_ssei(label, a.y);
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print_ssei(label, a.z);
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}
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#if defined(__KERNEL_AVX__) || defined(__KERNEL_AVX2__)
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typedef vector3<avxf> avx3f;
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#endif
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#endif
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CCL_NAMESPACE_END
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#endif /* __KERNEL_COMPAT_CPU_H__ */
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