110 lines
3.4 KiB
C
110 lines
3.4 KiB
C
/*
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* Copyright © 2021 Bas Nieuwenhuizen
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#ifndef RADV_ACCELERATION_STRUCTURE_H
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#define RADV_ACCELERATION_STRUCTURE_H
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#include <stdint.h>
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#include <vulkan/vulkan.h>
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enum radv_bvh_node_type {
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radv_bvh_node_triangle = 0,
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radv_bvh_node_internal = 5,
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radv_bvh_node_instance = 6,
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radv_bvh_node_aabb = 7,
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};
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struct radv_accel_struct_serialization_header {
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uint8_t driver_uuid[VK_UUID_SIZE];
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uint8_t accel_struct_compat[VK_UUID_SIZE];
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uint64_t serialization_size;
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uint64_t compacted_size;
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uint64_t instance_count;
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uint64_t instances[];
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};
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struct radv_accel_struct_header {
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uint32_t root_node_offset;
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uint32_t reserved;
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float aabb[2][3];
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/* Everything after this gets updated/copied from the CPU. */
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uint64_t compacted_size;
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uint64_t serialization_size;
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uint32_t copy_dispatch_size[3];
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uint64_t instance_offset;
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uint64_t instance_count;
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uint64_t size;
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};
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struct radv_bvh_triangle_node {
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float coords[3][3];
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uint32_t reserved[3];
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uint32_t triangle_id;
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/* flags in upper 4 bits */
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uint32_t geometry_id_and_flags;
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uint32_t reserved2;
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uint32_t id;
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};
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struct radv_bvh_aabb_node {
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float aabb[2][3];
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uint32_t primitive_id;
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/* flags in upper 4 bits */
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uint32_t geometry_id_and_flags;
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uint32_t reserved[8];
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};
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struct radv_bvh_instance_node {
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uint64_t base_ptr;
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/* lower 24 bits are the custom instance index, upper 8 bits are the visibility mask */
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uint32_t custom_instance_and_mask;
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/* lower 24 bits are the sbt offset, upper 8 bits are VkGeometryInstanceFlagsKHR */
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uint32_t sbt_offset_and_flags;
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/* The translation component is actually a pre-translation instead of a post-translation. If you
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* want to get a proper matrix out of it you need to apply the directional component of the
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* matrix to it. The pre-translation of the world->object matrix is the same as the
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* post-translation of the object->world matrix so this way we can share data between both
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* matrices. */
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float wto_matrix[12];
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float aabb[2][3];
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uint32_t instance_id;
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/* Object to world matrix transposed from the initial transform. Translate part is store in the
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* wto_matrix. */
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float otw_matrix[9];
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};
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struct radv_bvh_box16_node {
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uint32_t children[4];
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uint32_t coords[4][3];
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};
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struct radv_bvh_box32_node {
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uint32_t children[4];
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float coords[4][2][3];
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uint32_t reserved[4];
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};
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#endif |