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//
// Copyright (C) 2009-2021 Intel Corporation
//
// SPDX-License-Identifier: MIT
//
//
#pragma once
#include "GRLIntTypes.h"
GRL_NAMESPACE_BEGIN(GRL)
GRL_NAMESPACE_BEGIN(_INTERNAL)
struct GeometryTriangles
{
gpuva_t pTransformBuffer;
gpuva_t pIndexBuffer;
gpuva_t pVertexBuffer;
qword VertexBufferByteStride;
dword IndexCount;
dword VertexCount;
IndexFormat IndexFormat;
VertexFormat VertexFormat;
};
struct GeometryProcedural
{
gpuva_t pAABBs_GPUVA; ///<elements of pAABBs_GPUVA are gpuAABB format.
qword AABBByteStride;
dword AABBCount;
};
// TODO we miss 'unsigned int ShaderIndex_Mask; // extension' field
struct Geo
{
union
{
struct GeometryTriangles Triangles;
struct GeometryProcedural Procedural;
} Desc;
GeometryType Type;
uint8_t Flags;
};
// Matches the Vulkan VkAccelerationStructureBuildRangeInfoKHR structure
// See Vulkan spec for data access rules:
// https://www.khronos.org/registry/vulkan/specs/1.2-extensions/man/html/VkAccelerationStructureBuildRangeInfoKHR.html
//
struct IndirectBuildRangeInfo
{
dword primitiveCount; // Number of primitives
dword primitiveOffset; // Byte offset to primitive data
dword firstVertex; // Index of first vertex
dword transformOffset; // Byte offset to transform data (for triangle Geo with non-null transform)
};
GRL_NAMESPACE_END(_INTERNAL)
GRL_NAMESPACE_END(GRL)
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