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anv: Add shader to build BVH header

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Rework: (Kevin)
- Calculate the compacted_size properly
- Update instance count and self pointer
- The alignment of serialization size is not needed

Co-authored-by: Kevin Chuang <kaiwenjon23@gmail.com>
Co-authored-by: Sagar Ghuge <sagar.ghuge@intel.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/31588>
This commit is contained in:
Sagar Ghuge
2024-06-12 15:46:26 -07:00
committed by Marge Bot
parent ef94b7097b
commit a6b1a1fce1
1 changed files with 50 additions and 0 deletions
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src/intel/vulkan/bvh/header.comp
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/* Copyright © 2024 Valve Corporation
* Copyright © 2024 Intel Corporation
* SPDX-License-Identifier: MIT
*/
#version 460
#extension GL_GOOGLE_include_directive : require
#extension GL_EXT_shader_explicit_arithmetic_types_int8 : require
#extension GL_EXT_shader_explicit_arithmetic_types_int16 : require
#extension GL_EXT_shader_explicit_arithmetic_types_int32 : require
#extension GL_EXT_shader_explicit_arithmetic_types_int64 : require
#extension GL_EXT_shader_explicit_arithmetic_types_float16 : require
#extension GL_EXT_scalar_block_layout : require
#extension GL_EXT_buffer_reference : require
#extension GL_EXT_buffer_reference2 : require
layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
#include "anv_build_interface.h"
layout(push_constant) uniform CONSTS
{
header_args args;
};
void
main(void)
{
uint32_t compacted_size =
args.bvh_offset + DEREF(args.src).dst_node_offset * ANV_RT_BLOCK_SIZE;
uint32_t serialization_size = compacted_size +
SIZEOF(vk_accel_struct_serialization_header) + SIZEOF(uint64_t) *
args.instance_count;
DEREF(args.dst).compacted_size = compacted_size;
DEREF(args.dst).size = compacted_size;
DEREF(args.dst).serialization_size = serialization_size;
DEREF(args.dst).self_ptr = uint64_t(args.dst);
DEREF(args.dst).instance_count = args.instance_count;
/* 128 is local_size_x in copy.comp shader, 8 is the amount of data
* copied by each iteration of that shader's loop
*/
DEREF(args.dst).copy_dispatch_size[0] = DIV_ROUND_UP(compacted_size, 8 * 128);
DEREF(args.dst).copy_dispatch_size[1] = 1;
DEREF(args.dst).copy_dispatch_size[2] = 1;
}