diff options
author | Brecht Van Lommel <brecht@blender.org> | 2020-06-10 19:55:33 +0300 |
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committer | Brecht Van Lommel <brecht@blender.org> | 2020-06-22 14:28:01 +0300 |
commit | d1ef5146d72d40f97fdcbf28e96da49193c21dea (patch) | |
tree | 7a19a24bd6b809c7de72b4e2499d62b8740e639a /intern/cycles/kernel/bvh/qbvh_nodes.h | |
parent | 1de0e13af619e405f351bf42924f819dc3a9bc44 (diff) |
Cycles: remove SIMD BVH optimizations, to be replaced by Embree
Ref T73778
Depends on D8011
Maniphest Tasks: T73778
Differential Revision: https://developer.blender.org/D8012
Diffstat (limited to 'intern/cycles/kernel/bvh/qbvh_nodes.h')
-rw-r--r-- | intern/cycles/kernel/bvh/qbvh_nodes.h | 329 |
1 files changed, 0 insertions, 329 deletions
diff --git a/intern/cycles/kernel/bvh/qbvh_nodes.h b/intern/cycles/kernel/bvh/qbvh_nodes.h deleted file mode 100644 index 070406fb18a..00000000000 --- a/intern/cycles/kernel/bvh/qbvh_nodes.h +++ /dev/null @@ -1,329 +0,0 @@ -/* - * Copyright 2011-2014, 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. - * - * Aligned nodes intersection SSE code is adopted from Embree, - */ - -struct QBVHStackItem { - int addr; - float dist; -}; - -ccl_device_inline void qbvh_near_far_idx_calc(const float3 &idir, - int *ccl_restrict near_x, - int *ccl_restrict near_y, - int *ccl_restrict near_z, - int *ccl_restrict far_x, - int *ccl_restrict far_y, - int *ccl_restrict far_z) - -{ -#ifdef __KERNEL_SSE__ - *near_x = 0; - *far_x = 1; - *near_y = 2; - *far_y = 3; - *near_z = 4; - *far_z = 5; - - const size_t mask = movemask(ssef(idir.m128)); - - const int mask_x = mask & 1; - const int mask_y = (mask & 2) >> 1; - const int mask_z = (mask & 4) >> 2; - - *near_x += mask_x; - *far_x -= mask_x; - *near_y += mask_y; - *far_y -= mask_y; - *near_z += mask_z; - *far_z -= mask_z; -#else - if (idir.x >= 0.0f) { - *near_x = 0; - *far_x = 1; - } - else { - *near_x = 1; - *far_x = 0; - } - if (idir.y >= 0.0f) { - *near_y = 2; - *far_y = 3; - } - else { - *near_y = 3; - *far_y = 2; - } - if (idir.z >= 0.0f) { - *near_z = 4; - *far_z = 5; - } - else { - *near_z = 5; - *far_z = 4; - } -#endif -} - -/* TOOD(sergey): Investigate if using intrinsics helps for both - * stack item swap and float comparison. - */ -ccl_device_inline void qbvh_item_swap(QBVHStackItem *ccl_restrict a, QBVHStackItem *ccl_restrict b) -{ - QBVHStackItem tmp = *a; - *a = *b; - *b = tmp; -} - -ccl_device_inline void qbvh_stack_sort(QBVHStackItem *ccl_restrict s1, - QBVHStackItem *ccl_restrict s2, - QBVHStackItem *ccl_restrict s3) -{ - if (s2->dist < s1->dist) { - qbvh_item_swap(s2, s1); - } - if (s3->dist < s2->dist) { - qbvh_item_swap(s3, s2); - } - if (s2->dist < s1->dist) { - qbvh_item_swap(s2, s1); - } -} - -ccl_device_inline void qbvh_stack_sort(QBVHStackItem *ccl_restrict s1, - QBVHStackItem *ccl_restrict s2, - QBVHStackItem *ccl_restrict s3, - QBVHStackItem *ccl_restrict s4) -{ - if (s2->dist < s1->dist) { - qbvh_item_swap(s2, s1); - } - if (s4->dist < s3->dist) { - qbvh_item_swap(s4, s3); - } - if (s3->dist < s1->dist) { - qbvh_item_swap(s3, s1); - } - if (s4->dist < s2->dist) { - qbvh_item_swap(s4, s2); - } - if (s3->dist < s2->dist) { - qbvh_item_swap(s3, s2); - } -} - -/* Axis-aligned nodes intersection */ - -// ccl_device_inline int qbvh_aligned_node_intersect(KernelGlobals *ccl_restrict kg, -static int qbvh_aligned_node_intersect(KernelGlobals *ccl_restrict kg, - const ssef &isect_near, - const ssef &isect_far, -#ifdef __KERNEL_AVX2__ - const sse3f &org_idir, -#else - const sse3f &org, -#endif - const sse3f &idir, - const int near_x, - const int near_y, - const int near_z, - const int far_x, - const int far_y, - const int far_z, - const int node_addr, - ssef *ccl_restrict dist) -{ - const int offset = node_addr + 1; -#ifdef __KERNEL_AVX2__ - const ssef tnear_x = msub( - kernel_tex_fetch_ssef(__bvh_nodes, offset + near_x), idir.x, org_idir.x); - const ssef tnear_y = msub( - kernel_tex_fetch_ssef(__bvh_nodes, offset + near_y), idir.y, org_idir.y); - const ssef tnear_z = msub( - kernel_tex_fetch_ssef(__bvh_nodes, offset + near_z), idir.z, org_idir.z); - const ssef tfar_x = msub(kernel_tex_fetch_ssef(__bvh_nodes, offset + far_x), idir.x, org_idir.x); - const ssef tfar_y = msub(kernel_tex_fetch_ssef(__bvh_nodes, offset + far_y), idir.y, org_idir.y); - const ssef tfar_z = msub(kernel_tex_fetch_ssef(__bvh_nodes, offset + far_z), idir.z, org_idir.z); -#else - const ssef tnear_x = (kernel_tex_fetch_ssef(__bvh_nodes, offset + near_x) - org.x) * idir.x; - const ssef tnear_y = (kernel_tex_fetch_ssef(__bvh_nodes, offset + near_y) - org.y) * idir.y; - const ssef tnear_z = (kernel_tex_fetch_ssef(__bvh_nodes, offset + near_z) - org.z) * idir.z; - const ssef tfar_x = (kernel_tex_fetch_ssef(__bvh_nodes, offset + far_x) - org.x) * idir.x; - const ssef tfar_y = (kernel_tex_fetch_ssef(__bvh_nodes, offset + far_y) - org.y) * idir.y; - const ssef tfar_z = (kernel_tex_fetch_ssef(__bvh_nodes, offset + far_z) - org.z) * idir.z; -#endif - -#ifdef __KERNEL_SSE41__ - const ssef tnear = maxi(maxi(tnear_x, tnear_y), maxi(tnear_z, isect_near)); - const ssef tfar = mini(mini(tfar_x, tfar_y), mini(tfar_z, isect_far)); - const sseb vmask = cast(tnear) > cast(tfar); - int mask = (int)movemask(vmask) ^ 0xf; -#else - const ssef tnear = max4(isect_near, tnear_x, tnear_y, tnear_z); - const ssef tfar = min4(isect_far, tfar_x, tfar_y, tfar_z); - const sseb vmask = tnear <= tfar; - int mask = (int)movemask(vmask); -#endif - *dist = tnear; - return mask; -} - -/* Unaligned nodes intersection */ - -ccl_device_inline int qbvh_unaligned_node_intersect(KernelGlobals *ccl_restrict kg, - const ssef &isect_near, - const ssef &isect_far, -#ifdef __KERNEL_AVX2__ - const sse3f &org_idir, -#endif - const sse3f &org, - const sse3f &dir, - const sse3f &idir, - const int near_x, - const int near_y, - const int near_z, - const int far_x, - const int far_y, - const int far_z, - const int node_addr, - ssef *ccl_restrict dist) -{ - const int offset = node_addr; - const ssef tfm_x_x = kernel_tex_fetch_ssef(__bvh_nodes, offset + 1); - const ssef tfm_x_y = kernel_tex_fetch_ssef(__bvh_nodes, offset + 2); - const ssef tfm_x_z = kernel_tex_fetch_ssef(__bvh_nodes, offset + 3); - - const ssef tfm_y_x = kernel_tex_fetch_ssef(__bvh_nodes, offset + 4); - const ssef tfm_y_y = kernel_tex_fetch_ssef(__bvh_nodes, offset + 5); - const ssef tfm_y_z = kernel_tex_fetch_ssef(__bvh_nodes, offset + 6); - - const ssef tfm_z_x = kernel_tex_fetch_ssef(__bvh_nodes, offset + 7); - const ssef tfm_z_y = kernel_tex_fetch_ssef(__bvh_nodes, offset + 8); - const ssef tfm_z_z = kernel_tex_fetch_ssef(__bvh_nodes, offset + 9); - - const ssef tfm_t_x = kernel_tex_fetch_ssef(__bvh_nodes, offset + 10); - const ssef tfm_t_y = kernel_tex_fetch_ssef(__bvh_nodes, offset + 11); - const ssef tfm_t_z = kernel_tex_fetch_ssef(__bvh_nodes, offset + 12); - - const ssef aligned_dir_x = dir.x * tfm_x_x + dir.y * tfm_x_y + dir.z * tfm_x_z, - aligned_dir_y = dir.x * tfm_y_x + dir.y * tfm_y_y + dir.z * tfm_y_z, - aligned_dir_z = dir.x * tfm_z_x + dir.y * tfm_z_y + dir.z * tfm_z_z; - - const ssef aligned_P_x = org.x * tfm_x_x + org.y * tfm_x_y + org.z * tfm_x_z + tfm_t_x, - aligned_P_y = org.x * tfm_y_x + org.y * tfm_y_y + org.z * tfm_y_z + tfm_t_y, - aligned_P_z = org.x * tfm_z_x + org.y * tfm_z_y + org.z * tfm_z_z + tfm_t_z; - - const ssef neg_one(-1.0f, -1.0f, -1.0f, -1.0f); - const ssef nrdir_x = neg_one / aligned_dir_x, nrdir_y = neg_one / aligned_dir_y, - nrdir_z = neg_one / aligned_dir_z; - - const ssef tlower_x = aligned_P_x * nrdir_x, tlower_y = aligned_P_y * nrdir_y, - tlower_z = aligned_P_z * nrdir_z; - - const ssef tupper_x = tlower_x - nrdir_x, tupper_y = tlower_y - nrdir_y, - tupper_z = tlower_z - nrdir_z; - -#ifdef __KERNEL_SSE41__ - const ssef tnear_x = mini(tlower_x, tupper_x); - const ssef tnear_y = mini(tlower_y, tupper_y); - const ssef tnear_z = mini(tlower_z, tupper_z); - const ssef tfar_x = maxi(tlower_x, tupper_x); - const ssef tfar_y = maxi(tlower_y, tupper_y); - const ssef tfar_z = maxi(tlower_z, tupper_z); - const ssef tnear = max4(isect_near, tnear_x, tnear_y, tnear_z); - const ssef tfar = min4(isect_far, tfar_x, tfar_y, tfar_z); - const sseb vmask = tnear <= tfar; - *dist = tnear; - return movemask(vmask); -#else - const ssef tnear_x = min(tlower_x, tupper_x); - const ssef tnear_y = min(tlower_y, tupper_y); - const ssef tnear_z = min(tlower_z, tupper_z); - const ssef tfar_x = max(tlower_x, tupper_x); - const ssef tfar_y = max(tlower_y, tupper_y); - const ssef tfar_z = max(tlower_z, tupper_z); - const ssef tnear = max4(isect_near, tnear_x, tnear_y, tnear_z); - const ssef tfar = min4(isect_far, tfar_x, tfar_y, tfar_z); - const sseb vmask = tnear <= tfar; - *dist = tnear; - return movemask(vmask); -#endif -} - -/* Intersectors wrappers. - * - * They'll check node type and call appropriate intersection code. - */ - -ccl_device_inline int qbvh_node_intersect(KernelGlobals *ccl_restrict kg, - const ssef &isect_near, - const ssef &isect_far, -#ifdef __KERNEL_AVX2__ - const sse3f &org_idir, -#endif - const sse3f &org, - const sse3f &dir, - const sse3f &idir, - const int near_x, - const int near_y, - const int near_z, - const int far_x, - const int far_y, - const int far_z, - const int node_addr, - ssef *ccl_restrict dist) -{ - const int offset = node_addr; - const float4 node = kernel_tex_fetch(__bvh_nodes, offset); - if (__float_as_uint(node.x) & PATH_RAY_NODE_UNALIGNED) { - return qbvh_unaligned_node_intersect(kg, - isect_near, - isect_far, -#ifdef __KERNEL_AVX2__ - org_idir, -#endif - org, - dir, - idir, - near_x, - near_y, - near_z, - far_x, - far_y, - far_z, - node_addr, - dist); - } - else { - return qbvh_aligned_node_intersect(kg, - isect_near, - isect_far, -#ifdef __KERNEL_AVX2__ - org_idir, -#else - org, -#endif - idir, - near_x, - near_y, - near_z, - far_x, - far_y, - far_z, - node_addr, - dist); - } -} |