diff options
Diffstat (limited to 'intern/cycles/kernel/bvh/qbvh_volume_all.h')
| -rw-r--r-- | intern/cycles/kernel/bvh/qbvh_volume_all.h | 444 |
1 files changed, 0 insertions, 444 deletions
diff --git a/intern/cycles/kernel/bvh/qbvh_volume_all.h b/intern/cycles/kernel/bvh/qbvh_volume_all.h deleted file mode 100644 index eddc48c487e..00000000000 --- a/intern/cycles/kernel/bvh/qbvh_volume_all.h +++ /dev/null @@ -1,444 +0,0 @@ -/* - * 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. - */ - -/* This is a template BVH traversal function for volumes, where - * various features can be enabled/disabled. This way we can compile optimized - * versions for each case without new features slowing things down. - * - * BVH_INSTANCING: object instancing - * BVH_MOTION: motion blur rendering - */ - -#if BVH_FEATURE(BVH_HAIR) -# define NODE_INTERSECT qbvh_node_intersect -#else -# define NODE_INTERSECT qbvh_aligned_node_intersect -#endif - -ccl_device uint BVH_FUNCTION_FULL_NAME(QBVH)(KernelGlobals *kg, - const Ray *ray, - Intersection *isect_array, - const uint max_hits, - const uint visibility) -{ - /* TODO(sergey): - * - Test if pushing distance on the stack helps. - * - Likely and unlikely for if() statements. - * - Test restrict attribute for pointers. - */ - - /* Traversal stack in CUDA thread-local memory. */ - QBVHStackItem traversal_stack[BVH_QSTACK_SIZE]; - traversal_stack[0].addr = ENTRYPOINT_SENTINEL; - - /* Traversal variables in registers. */ - int stack_ptr = 0; - int node_addr = kernel_data.bvh.root; - - /* Ray parameters in registers. */ - const float tmax = ray->t; - float3 P = ray->P; - float3 dir = bvh_clamp_direction(ray->D); - float3 idir = bvh_inverse_direction(dir); - int object = OBJECT_NONE; - float isect_t = tmax; - -#if BVH_FEATURE(BVH_MOTION) - Transform ob_itfm; -#endif - - uint num_hits = 0; - isect_array->t = tmax; - -#if BVH_FEATURE(BVH_INSTANCING) - int num_hits_in_instance = 0; -#endif - - ssef tnear(0.0f), tfar(isect_t); -#if BVH_FEATURE(BVH_HAIR) - sse3f dir4(ssef(dir.x), ssef(dir.y), ssef(dir.z)); -#endif - sse3f idir4(ssef(idir.x), ssef(idir.y), ssef(idir.z)); - -#ifdef __KERNEL_AVX2__ - float3 P_idir = P * idir; - sse3f P_idir4(P_idir.x, P_idir.y, P_idir.z); -#endif -#if BVH_FEATURE(BVH_HAIR) || !defined(__KERNEL_AVX2__) - sse3f org4(ssef(P.x), ssef(P.y), ssef(P.z)); -#endif - - /* Offsets to select the side that becomes the lower or upper bound. */ - int near_x, near_y, near_z; - int far_x, far_y, far_z; - qbvh_near_far_idx_calc(idir, &near_x, &near_y, &near_z, &far_x, &far_y, &far_z); - - /* Traversal loop. */ - do { - do { - /* Traverse internal nodes. */ - while (node_addr >= 0 && node_addr != ENTRYPOINT_SENTINEL) { - float4 inodes = kernel_tex_fetch(__bvh_nodes, node_addr + 0); - -#ifdef __VISIBILITY_FLAG__ - if ((__float_as_uint(inodes.x) & visibility) == 0) { - /* Pop. */ - node_addr = traversal_stack[stack_ptr].addr; - --stack_ptr; - continue; - } -#endif - - ssef dist; - int child_mask = NODE_INTERSECT(kg, - tnear, - tfar, -#ifdef __KERNEL_AVX2__ - P_idir4, -#endif -#if BVH_FEATURE(BVH_HAIR) || !defined(__KERNEL_AVX2__) - org4, -#endif -#if BVH_FEATURE(BVH_HAIR) - dir4, -#endif - idir4, - near_x, - near_y, - near_z, - far_x, - far_y, - far_z, - node_addr, - &dist); - - if (child_mask != 0) { - float4 cnodes; -#if BVH_FEATURE(BVH_HAIR) - if (__float_as_uint(inodes.x) & PATH_RAY_NODE_UNALIGNED) { - cnodes = kernel_tex_fetch(__bvh_nodes, node_addr + 13); - } - else -#endif - { - cnodes = kernel_tex_fetch(__bvh_nodes, node_addr + 7); - } - - /* One child is hit, continue with that child. */ - int r = __bscf(child_mask); - if (child_mask == 0) { - node_addr = __float_as_int(cnodes[r]); - continue; - } - - /* Two children are hit, push far child, and continue with - * closer child. - */ - int c0 = __float_as_int(cnodes[r]); - float d0 = ((float *)&dist)[r]; - r = __bscf(child_mask); - int c1 = __float_as_int(cnodes[r]); - float d1 = ((float *)&dist)[r]; - if (child_mask == 0) { - if (d1 < d0) { - node_addr = c1; - ++stack_ptr; - kernel_assert(stack_ptr < BVH_QSTACK_SIZE); - traversal_stack[stack_ptr].addr = c0; - traversal_stack[stack_ptr].dist = d0; - continue; - } - else { - node_addr = c0; - ++stack_ptr; - kernel_assert(stack_ptr < BVH_QSTACK_SIZE); - traversal_stack[stack_ptr].addr = c1; - traversal_stack[stack_ptr].dist = d1; - continue; - } - } - - /* Here starts the slow path for 3 or 4 hit children. We push - * all nodes onto the stack to sort them there. - */ - ++stack_ptr; - kernel_assert(stack_ptr < BVH_QSTACK_SIZE); - traversal_stack[stack_ptr].addr = c1; - traversal_stack[stack_ptr].dist = d1; - ++stack_ptr; - kernel_assert(stack_ptr < BVH_QSTACK_SIZE); - traversal_stack[stack_ptr].addr = c0; - traversal_stack[stack_ptr].dist = d0; - - /* Three children are hit, push all onto stack and sort 3 - * stack items, continue with closest child. - */ - r = __bscf(child_mask); - int c2 = __float_as_int(cnodes[r]); - float d2 = ((float *)&dist)[r]; - if (child_mask == 0) { - ++stack_ptr; - kernel_assert(stack_ptr < BVH_QSTACK_SIZE); - traversal_stack[stack_ptr].addr = c2; - traversal_stack[stack_ptr].dist = d2; - qbvh_stack_sort(&traversal_stack[stack_ptr], - &traversal_stack[stack_ptr - 1], - &traversal_stack[stack_ptr - 2]); - node_addr = traversal_stack[stack_ptr].addr; - --stack_ptr; - continue; - } - - /* Four children are hit, push all onto stack and sort 4 - * stack items, continue with closest child. - */ - r = __bscf(child_mask); - int c3 = __float_as_int(cnodes[r]); - float d3 = ((float *)&dist)[r]; - ++stack_ptr; - kernel_assert(stack_ptr < BVH_QSTACK_SIZE); - traversal_stack[stack_ptr].addr = c3; - traversal_stack[stack_ptr].dist = d3; - ++stack_ptr; - kernel_assert(stack_ptr < BVH_QSTACK_SIZE); - traversal_stack[stack_ptr].addr = c2; - traversal_stack[stack_ptr].dist = d2; - qbvh_stack_sort(&traversal_stack[stack_ptr], - &traversal_stack[stack_ptr - 1], - &traversal_stack[stack_ptr - 2], - &traversal_stack[stack_ptr - 3]); - } - - node_addr = traversal_stack[stack_ptr].addr; - --stack_ptr; - } - - /* 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) - if (prim_addr >= 0) { -#endif - int prim_addr2 = __float_as_int(leaf.y); - const uint type = __float_as_int(leaf.w); - const uint p_type = type & PRIMITIVE_ALL; - bool hit; - - /* Pop. */ - node_addr = traversal_stack[stack_ptr].addr; - --stack_ptr; - - /* Primitive intersection. */ - switch (p_type) { - case PRIMITIVE_TRIANGLE: { - for (; prim_addr < prim_addr2; prim_addr++) { - kernel_assert(kernel_tex_fetch(__prim_type, prim_addr) == type); - /* Only primitives from volume object. */ - uint tri_object = (object == OBJECT_NONE) ? - kernel_tex_fetch(__prim_object, prim_addr) : - object; - int object_flag = kernel_tex_fetch(__object_flag, tri_object); - if ((object_flag & SD_OBJECT_HAS_VOLUME) == 0) { - continue; - } - /* Intersect ray against primitive. */ - hit = triangle_intersect(kg, isect_array, P, dir, visibility, object, prim_addr); - if (hit) { - /* Move on to next entry in intersections array. */ - isect_array++; - num_hits++; -#if BVH_FEATURE(BVH_INSTANCING) - num_hits_in_instance++; -#endif - isect_array->t = isect_t; - if (num_hits == max_hits) { -#if BVH_FEATURE(BVH_INSTANCING) - if (object != OBJECT_NONE) { -# if BVH_FEATURE(BVH_MOTION) - float t_fac = 1.0f / len(transform_direction(&ob_itfm, dir)); -# else - Transform itfm = object_fetch_transform( - kg, object, OBJECT_INVERSE_TRANSFORM); - float t_fac = 1.0f / len(transform_direction(&itfm, dir)); -# endif - for (int i = 0; i < num_hits_in_instance; i++) { - (isect_array - i - 1)->t *= t_fac; - } - } -#endif /* BVH_FEATURE(BVH_INSTANCING) */ - return num_hits; - } - } - } - break; - } -#if BVH_FEATURE(BVH_MOTION) - case PRIMITIVE_MOTION_TRIANGLE: { - for (; prim_addr < prim_addr2; prim_addr++) { - kernel_assert(kernel_tex_fetch(__prim_type, prim_addr) == type); - /* Only primitives from volume object. */ - uint tri_object = (object == OBJECT_NONE) ? - kernel_tex_fetch(__prim_object, prim_addr) : - object; - int object_flag = kernel_tex_fetch(__object_flag, tri_object); - if ((object_flag & SD_OBJECT_HAS_VOLUME) == 0) { - continue; - } - /* Intersect ray against primitive. */ - hit = motion_triangle_intersect( - kg, isect_array, P, dir, ray->time, visibility, object, prim_addr); - if (hit) { - /* Move on to next entry in intersections array. */ - isect_array++; - num_hits++; -# if BVH_FEATURE(BVH_INSTANCING) - num_hits_in_instance++; -# endif - isect_array->t = isect_t; - if (num_hits == max_hits) { -# if BVH_FEATURE(BVH_INSTANCING) - if (object != OBJECT_NONE) { -# if BVH_FEATURE(BVH_MOTION) - float t_fac = 1.0f / len(transform_direction(&ob_itfm, dir)); -# else - Transform itfm = object_fetch_transform( - kg, object, OBJECT_INVERSE_TRANSFORM); - float t_fac = 1.0f / len(transform_direction(&itfm, dir)); -# endif - for (int i = 0; i < num_hits_in_instance; i++) { - (isect_array - i - 1)->t *= t_fac; - } - } -# endif /* BVH_FEATURE(BVH_INSTANCING) */ - return num_hits; - } - } - } - break; - } -#endif - } - } -#if BVH_FEATURE(BVH_INSTANCING) - else { - /* Instance push. */ - object = kernel_tex_fetch(__prim_object, -prim_addr - 1); - int object_flag = kernel_tex_fetch(__object_flag, object); - if (object_flag & SD_OBJECT_HAS_VOLUME) { -# if BVH_FEATURE(BVH_MOTION) - isect_t = bvh_instance_motion_push( - kg, object, ray, &P, &dir, &idir, isect_t, &ob_itfm); -# else - isect_t = bvh_instance_push(kg, object, ray, &P, &dir, &idir, isect_t); -# endif - - qbvh_near_far_idx_calc(idir, &near_x, &near_y, &near_z, &far_x, &far_y, &far_z); - tfar = ssef(isect_t); - idir4 = sse3f(ssef(idir.x), ssef(idir.y), ssef(idir.z)); -# if BVH_FEATURE(BVH_HAIR) - dir4 = sse3f(ssef(dir.x), ssef(dir.y), ssef(dir.z)); -# endif -# ifdef __KERNEL_AVX2__ - P_idir = P * idir; - P_idir4 = sse3f(P_idir.x, P_idir.y, P_idir.z); -# endif -# if BVH_FEATURE(BVH_HAIR) || !defined(__KERNEL_AVX2__) - org4 = sse3f(ssef(P.x), ssef(P.y), ssef(P.z)); -# endif - - num_hits_in_instance = 0; - isect_array->t = isect_t; - - ++stack_ptr; - kernel_assert(stack_ptr < BVH_QSTACK_SIZE); - traversal_stack[stack_ptr].addr = ENTRYPOINT_SENTINEL; - - node_addr = kernel_tex_fetch(__object_node, object); - } - else { - /* Pop. */ - object = OBJECT_NONE; - node_addr = traversal_stack[stack_ptr].addr; - --stack_ptr; - } - } - } -#endif /* FEATURE(BVH_INSTANCING) */ - } while (node_addr != ENTRYPOINT_SENTINEL); - -#if BVH_FEATURE(BVH_INSTANCING) - if (stack_ptr >= 0) { - kernel_assert(object != OBJECT_NONE); - - /* Instance pop. */ - if (num_hits_in_instance) { - float t_fac; -# if BVH_FEATURE(BVH_MOTION) - bvh_instance_motion_pop_factor(kg, object, ray, &P, &dir, &idir, &t_fac, &ob_itfm); -# else - bvh_instance_pop_factor(kg, object, ray, &P, &dir, &idir, &t_fac); -# endif - /* Scale isect->t to adjust for instancing. */ - for (int i = 0; i < num_hits_in_instance; i++) { - (isect_array - i - 1)->t *= t_fac; - } - } - else { -# if BVH_FEATURE(BVH_MOTION) - bvh_instance_motion_pop(kg, object, ray, &P, &dir, &idir, FLT_MAX, &ob_itfm); -# else - bvh_instance_pop(kg, object, ray, &P, &dir, &idir, FLT_MAX); -# endif - } - - isect_t = tmax; - isect_array->t = isect_t; - - qbvh_near_far_idx_calc(idir, &near_x, &near_y, &near_z, &far_x, &far_y, &far_z); - tfar = ssef(isect_t); -# if BVH_FEATURE(BVH_HAIR) - dir4 = sse3f(ssef(dir.x), ssef(dir.y), ssef(dir.z)); -# endif - idir4 = sse3f(ssef(idir.x), ssef(idir.y), ssef(idir.z)); -# ifdef __KERNEL_AVX2__ - P_idir = P * idir; - P_idir4 = sse3f(P_idir.x, P_idir.y, P_idir.z); -# endif -# if BVH_FEATURE(BVH_HAIR) || !defined(__KERNEL_AVX2__) - org4 = sse3f(ssef(P.x), ssef(P.y), ssef(P.z)); -# endif - - object = OBJECT_NONE; - node_addr = traversal_stack[stack_ptr].addr; - --stack_ptr; - } -#endif /* FEATURE(BVH_INSTANCING) */ - } while (node_addr != ENTRYPOINT_SENTINEL); - - return num_hits; -} - -#undef NODE_INTERSECT |