enums.h

//
// Copyright 2019 Pixar
//
// Licensed under the terms set forth in the LICENSE.txt file available at
// https://openusd.org/license.
//
#ifndef PXR_IMAGING_HGI_ENUMS_H
#define PXR_IMAGING_HGI_ENUMS_H

#include "pxr/pxr.h"
#include "pxr/imaging/hgi/api.h"
#include <cstdint>

PXR_NAMESPACE_OPEN_SCOPE

using HgiBits = uint32_t;


enum HgiDeviceCapabilitiesBits : HgiBits
{
    HgiDeviceCapabilitiesBitsPresentation             = 1 << 0,
    HgiDeviceCapabilitiesBitsBindlessBuffers          = 1 << 1,
    HgiDeviceCapabilitiesBitsConcurrentDispatch       = 1 << 2,
    HgiDeviceCapabilitiesBitsUnifiedMemory            = 1 << 3,
    HgiDeviceCapabilitiesBitsBuiltinBarycentrics      = 1 << 4,
    HgiDeviceCapabilitiesBitsShaderDrawParameters     = 1 << 5,
    HgiDeviceCapabilitiesBitsMultiDrawIndirect        = 1 << 6,
    HgiDeviceCapabilitiesBitsBindlessTextures         = 1 << 7,
    HgiDeviceCapabilitiesBitsShaderDoublePrecision    = 1 << 8,
    HgiDeviceCapabilitiesBitsDepthRangeMinusOnetoOne  = 1 << 9,
    HgiDeviceCapabilitiesBitsCppShaderPadding         = 1 << 10,
    HgiDeviceCapabilitiesBitsConservativeRaster       = 1 << 11,
    HgiDeviceCapabilitiesBitsStencilReadback          = 1 << 12,
    HgiDeviceCapabilitiesBitsCustomDepthRange         = 1 << 13,
    HgiDeviceCapabilitiesBitsMetalTessellation        = 1 << 14,
    HgiDeviceCapabilitiesBitsBasePrimitiveOffset      = 1 << 15,
    HgiDeviceCapabilitiesBitsPrimitiveIdEmulation     = 1 << 16,
    HgiDeviceCapabilitiesBitsIndirectCommandBuffers   = 1 << 17,
    HgiDeviceCapabilitiesBitsRoundPoints              = 1 << 18,
    HgiDeviceCapabilitiesBitsSingleSlotResourceArrays = 1 << 19,
    HgiDeviceCapabilitiesForceEarlyFragmentTest       = 1 << 20,
};

using HgiDeviceCapabilities = HgiBits;

enum HgiTextureType
{
    HgiTextureType1D = 0,
    HgiTextureType2D,
    HgiTextureType3D,
    HgiTextureTypeCubemap,
    HgiTextureType1DArray,
    HgiTextureType2DArray,

    HgiTextureTypeCount
};

enum HgiTextureUsageBits : HgiBits
{
    HgiTextureUsageBitsColorTarget   = 1 << 0,
    HgiTextureUsageBitsDepthTarget   = 1 << 1,
    HgiTextureUsageBitsStencilTarget = 1 << 2,
    HgiTextureUsageBitsShaderRead    = 1 << 3,
    HgiTextureUsageBitsShaderWrite   = 1 << 4,

    HgiTextureUsageCustomBitsBegin = 1 << 5,
};

using HgiTextureUsage = HgiBits;

enum HgiSamplerAddressMode
{
    HgiSamplerAddressModeClampToEdge = 0,
    HgiSamplerAddressModeMirrorClampToEdge,
    HgiSamplerAddressModeRepeat,
    HgiSamplerAddressModeMirrorRepeat,
    HgiSamplerAddressModeClampToBorderColor,

    HgiSamplerAddressModeCount
};

enum HgiSamplerFilter
{
    HgiSamplerFilterNearest = 0,
    HgiSamplerFilterLinear  = 1,

    HgiSamplerFilterCount
};

enum HgiMipFilter
{
    HgiMipFilterNotMipmapped = 0,
    HgiMipFilterNearest      = 1,
    HgiMipFilterLinear       = 2,

    HgiMipFilterCount
};

enum HgiBorderColor
{
    HgiBorderColorTransparentBlack = 0,
    HgiBorderColorOpaqueBlack      = 1,
    HgiBorderColorOpaqueWhite      = 2,

    HgiBorderColorCount
};

enum HgiSampleCount
{
    HgiSampleCount1  = 1,
    HgiSampleCount2  = 2,
    HgiSampleCount4  = 4,
    HgiSampleCount8  = 8,
    HgiSampleCount16 = 16,

    HgiSampleCountEnd
};

enum HgiAttachmentLoadOp
{
    HgiAttachmentLoadOpDontCare = 0,
    HgiAttachmentLoadOpClear,
    HgiAttachmentLoadOpLoad,

    HgiAttachmentLoadOpCount
};

enum HgiAttachmentStoreOp
{
    HgiAttachmentStoreOpDontCare = 0,
    HgiAttachmentStoreOpStore,

    HgiAttachmentStoreOpCount
};

enum HgiBufferUsageBits : HgiBits
{
    HgiBufferUsageUniform  = 1 << 0,
    HgiBufferUsageIndex32  = 1 << 1,
    HgiBufferUsageVertex   = 1 << 2,
    HgiBufferUsageStorage  = 1 << 3,
    HgiBufferUsageIndirect = 1 << 4,
    HgiBufferUsageUpload   = 1 << 5,

    HgiBufferUsageCustomBitsBegin = 1 << 6,
};
using HgiBufferUsage = HgiBits;

enum HgiShaderStageBits : HgiBits
{
    HgiShaderStageVertex                  = 1 << 0,
    HgiShaderStageFragment                = 1 << 1,
    HgiShaderStageCompute                 = 1 << 2,
    HgiShaderStageTessellationControl     = 1 << 3,
    HgiShaderStageTessellationEval        = 1 << 4,
    HgiShaderStageGeometry                = 1 << 5,
    HgiShaderStagePostTessellationControl = 1 << 6,
    HgiShaderStagePostTessellationVertex  = 1 << 7,
    HgiShaderStageCustomBitsBegin         = 1 << 8,
    HgiShaderStageAllGraphics             = HgiShaderStageVertex
                                          | HgiShaderStageFragment
                                          | HgiShaderStageTessellationControl
                                          | HgiShaderStageTessellationEval
                                          | HgiShaderStageGeometry
                                          | HgiShaderStagePostTessellationControl
                                          | HgiShaderStagePostTessellationVertex,
    HgiShaderStageAll                     = 0xFFFFFFFF

};
using HgiShaderStage = HgiBits;

enum HgiBindResourceType
{
    HgiBindResourceTypeSampler = 0,
    HgiBindResourceTypeSampledImage,
    HgiBindResourceTypeCombinedSamplerImage,
    HgiBindResourceTypeStorageImage,
    HgiBindResourceTypeUniformBuffer,
    HgiBindResourceTypeStorageBuffer,
    HgiBindResourceTypeTessFactors,

    HgiBindResourceTypeCount
};

enum HgiPolygonMode
{
    HgiPolygonModeFill = 0,
    HgiPolygonModeLine,
    HgiPolygonModePoint,

    HgiPolygonModeCount
};

enum HgiCullMode
{
    HgiCullModeNone = 0,
    HgiCullModeFront,
    HgiCullModeBack,
    HgiCullModeFrontAndBack,

    HgiCullModeCount
};

enum HgiWinding
{
    HgiWindingClockwise = 0,
    HgiWindingCounterClockwise,

    HgiWindingCount
};


enum HgiBlendOp
{
    HgiBlendOpAdd = 0,
    HgiBlendOpSubtract,
    HgiBlendOpReverseSubtract,
    HgiBlendOpMin,
    HgiBlendOpMax,

    HgiBlendOpCount
};

enum HgiBlendFactor
{
    HgiBlendFactorZero = 0,
    HgiBlendFactorOne,
    HgiBlendFactorSrcColor,
    HgiBlendFactorOneMinusSrcColor,
    HgiBlendFactorDstColor,
    HgiBlendFactorOneMinusDstColor,
    HgiBlendFactorSrcAlpha,
    HgiBlendFactorOneMinusSrcAlpha,
    HgiBlendFactorDstAlpha,
    HgiBlendFactorOneMinusDstAlpha,
    HgiBlendFactorConstantColor,
    HgiBlendFactorOneMinusConstantColor,
    HgiBlendFactorConstantAlpha,
    HgiBlendFactorOneMinusConstantAlpha,
    HgiBlendFactorSrcAlphaSaturate,
    HgiBlendFactorSrc1Color,
    HgiBlendFactorOneMinusSrc1Color,
    HgiBlendFactorSrc1Alpha,
    HgiBlendFactorOneMinusSrc1Alpha,

    HgiBlendFactorCount
};

enum HgiColorMaskBits : HgiBits
{
    HgiColorMaskRed             = 1 << 0,
    HgiColorMaskGreen           = 1 << 1,
    HgiColorMaskBlue            = 1 << 2,
    HgiColorMaskAlpha           = 1 << 3,
};
using HgiColorMask = HgiBits;

enum HgiCompareFunction
{
    HgiCompareFunctionNever = 0,
    HgiCompareFunctionLess,
    HgiCompareFunctionEqual,
    HgiCompareFunctionLEqual,
    HgiCompareFunctionGreater,
    HgiCompareFunctionNotEqual,
    HgiCompareFunctionGEqual,
    HgiCompareFunctionAlways,

    HgiCompareFunctionCount
};

enum HgiStencilOp
{
    HgiStencilOpKeep = 0,
    HgiStencilOpZero,
    HgiStencilOpReplace,
    HgiStencilOpIncrementClamp,
    HgiStencilOpDecrementClamp,
    HgiStencilOpInvert,
    HgiStencilOpIncrementWrap,
    HgiStencilOpDecrementWrap,

    HgiStencilOpCount
};

enum HgiComponentSwizzle
{
    HgiComponentSwizzleZero = 0,
    HgiComponentSwizzleOne,
    HgiComponentSwizzleR,
    HgiComponentSwizzleG,
    HgiComponentSwizzleB,
    HgiComponentSwizzleA,

    HgiComponentSwizzleCount
};

enum HgiPrimitiveType
{
    HgiPrimitiveTypePointList = 0,
    HgiPrimitiveTypeLineList,
    HgiPrimitiveTypeLineStrip,
    HgiPrimitiveTypeTriangleList,
    HgiPrimitiveTypePatchList,
    HgiPrimitiveTypeLineListWithAdjacency,

    HgiPrimitiveTypeCount
};

enum HgiVertexBufferStepFunction
{
    HgiVertexBufferStepFunctionConstant = 0,
    HgiVertexBufferStepFunctionPerVertex,
    HgiVertexBufferStepFunctionPerInstance,
    HgiVertexBufferStepFunctionPerPatch,
    HgiVertexBufferStepFunctionPerPatchControlPoint,
    HgiVertexBufferStepFunctionPerDrawCommand,

    HgiVertexBufferStepFunctionCount
};

enum HgiSubmitWaitType
{
    HgiSubmitWaitTypeNoWait = 0,
    HgiSubmitWaitTypeWaitUntilCompleted,
};

enum HgiMemoryBarrierBits
{
    HgiMemoryBarrierNone = 0,
    HgiMemoryBarrierAll  = 1 << 0
};
using HgiMemoryBarrier = HgiBits;

enum HgiBindingType
{
    HgiBindingTypeValue = 0,
    HgiBindingTypeUniformValue,
    HgiBindingTypeArray,
    HgiBindingTypeUniformArray,
    HgiBindingTypePointer,
};

enum HgiInterpolationType
{
    HgiInterpolationDefault = 0,
    HgiInterpolationFlat,
    HgiInterpolationNoPerspective,
};

enum HgiSamplingType
{
    HgiSamplingDefault = 0,
    HgiSamplingCentroid,
    HgiSamplingSample,
};

enum HgiStorageType
{
    HgiStorageDefault = 0,
    HgiStoragePatch,
};

enum HgiShaderTextureType
{
    HgiShaderTextureTypeTexture = 0,
    HgiShaderTextureTypeShadowTexture,
    HgiShaderTextureTypeArrayTexture,
    HgiShaderTextureTypeCubemapTexture
};

enum HgiComputeDispatch
{
    HgiComputeDispatchSerial = 0,
    HgiComputeDispatchConcurrent
};

PXR_NAMESPACE_CLOSE_SCOPE

#endif