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//===-- DXILABI.h - ABI Sensitive Values for DXIL ---------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file contains definitions of various constants and enums that are
// required to remain stable as per the DXIL format's requirements.
//
// Documentation for DXIL can be found in
// https://github.com/Microsoft/DirectXShaderCompiler/blob/main/docs/DXIL.rst.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_SUPPORT_DXILABI_H
#define LLVM_SUPPORT_DXILABI_H
#include "llvm/ADT/StringSwitch.h"
namespace llvm {
namespace dxil {
enum class ParameterKind : uint8_t {
Invalid = 0,
Void,
Half,
Float,
Double,
I1,
I8,
I16,
I32,
I64,
Overload,
CBufferRet,
ResourceRet,
DXILHandle,
};
enum class ResourceClass : uint8_t {
SRV = 0,
UAV,
CBuffer,
Sampler,
};
/// The kind of resource for an SRV or UAV resource. Sometimes referred to as
/// "Shape" in the DXIL docs.
enum class ResourceKind : uint32_t {
Invalid = 0,
Texture1D,
Texture2D,
Texture2DMS,
Texture3D,
TextureCube,
Texture1DArray,
Texture2DArray,
Texture2DMSArray,
TextureCubeArray,
TypedBuffer,
RawBuffer,
StructuredBuffer,
CBuffer,
Sampler,
TBuffer,
RTAccelerationStructure,
FeedbackTexture2D,
FeedbackTexture2DArray,
NumEntries,
};
/// The element type of an SRV or UAV resource.
enum class ElementType : uint32_t {
Invalid = 0,
I1,
I16,
U16,
I32,
U32,
I64,
U64,
F16,
F32,
F64,
SNormF16,
UNormF16,
SNormF32,
UNormF32,
SNormF64,
UNormF64,
PackedS8x32,
PackedU8x32,
};
/// Metadata tags for extra resource properties.
enum class ExtPropTags : uint32_t {
ElementType = 0,
StructuredBufferStride = 1,
SamplerFeedbackKind = 2,
Atomic64Use = 3,
};
enum class SamplerType : uint32_t {
Default = 0,
Comparison = 1,
Mono = 2, // Note: Seems to be unused.
};
enum class SamplerFeedbackType : uint32_t {
MinMip = 0,
MipRegionUsed = 1,
};
} // namespace dxil
} // namespace llvm
#endif // LLVM_SUPPORT_DXILABI_H
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