/****************************************************************************
 * Copyright (C) 2014-2018 Intel Corporation.   All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 *
 * @file state.h
 *
 * @brief Definitions for API state.
 *
 ******************************************************************************/
// Skipping clang-format due to parsing by simplistic python scripts
// clang-format off
#pragma once

#include "common/formats.h"
#include "common/intrin.h"
#include <functional>
#include <algorithm>

using gfxptr_t = unsigned long long;

//////////////////////////////////////////////////////////////////////////
/// PRIMITIVE_TOPOLOGY.
//////////////////////////////////////////////////////////////////////////
enum PRIMITIVE_TOPOLOGY
{
    TOP_UNKNOWN                = 0x0,
    TOP_POINT_LIST             = 0x1,
    TOP_LINE_LIST              = 0x2,
    TOP_LINE_STRIP             = 0x3,
    TOP_TRIANGLE_LIST          = 0x4,
    TOP_TRIANGLE_STRIP         = 0x5,
    TOP_TRIANGLE_FAN           = 0x6,
    TOP_QUAD_LIST              = 0x7,
    TOP_QUAD_STRIP             = 0x8,
    TOP_LINE_LIST_ADJ          = 0x9,
    TOP_LISTSTRIP_ADJ          = 0xA,
    TOP_TRI_LIST_ADJ           = 0xB,
    TOP_TRI_STRIP_ADJ          = 0xC,
    TOP_TRI_STRIP_REVERSE      = 0xD,
    TOP_POLYGON                = 0xE,
    TOP_RECT_LIST              = 0xF,
    TOP_LINE_LOOP              = 0x10,
    TOP_POINT_LIST_BF          = 0x11,
    TOP_LINE_STRIP_CONT        = 0x12,
    TOP_LINE_STRIP_BF          = 0x13,
    TOP_LINE_STRIP_CONT_BF     = 0x14,
    TOP_TRIANGLE_FAN_NOSTIPPLE = 0x16,
    TOP_TRIANGLE_DISC          = 0x17, /// @todo What is this??

    TOP_PATCHLIST_BASE = 0x1F, // Invalid topology, used to calculate num verts for a patchlist.
    TOP_PATCHLIST_1    = 0x20, // List of 1-vertex patches
    TOP_PATCHLIST_2    = 0x21,
    TOP_PATCHLIST_3    = 0x22,
    TOP_PATCHLIST_4    = 0x23,
    TOP_PATCHLIST_5    = 0x24,
    TOP_PATCHLIST_6    = 0x25,
    TOP_PATCHLIST_7    = 0x26,
    TOP_PATCHLIST_8    = 0x27,
    TOP_PATCHLIST_9    = 0x28,
    TOP_PATCHLIST_10   = 0x29,
    TOP_PATCHLIST_11   = 0x2A,
    TOP_PATCHLIST_12   = 0x2B,
    TOP_PATCHLIST_13   = 0x2C,
    TOP_PATCHLIST_14   = 0x2D,
    TOP_PATCHLIST_15   = 0x2E,
    TOP_PATCHLIST_16   = 0x2F,
    TOP_PATCHLIST_17   = 0x30,
    TOP_PATCHLIST_18   = 0x31,
    TOP_PATCHLIST_19   = 0x32,
    TOP_PATCHLIST_20   = 0x33,
    TOP_PATCHLIST_21   = 0x34,
    TOP_PATCHLIST_22   = 0x35,
    TOP_PATCHLIST_23   = 0x36,
    TOP_PATCHLIST_24   = 0x37,
    TOP_PATCHLIST_25   = 0x38,
    TOP_PATCHLIST_26   = 0x39,
    TOP_PATCHLIST_27   = 0x3A,
    TOP_PATCHLIST_28   = 0x3B,
    TOP_PATCHLIST_29   = 0x3C,
    TOP_PATCHLIST_30   = 0x3D,
    TOP_PATCHLIST_31   = 0x3E,
    TOP_PATCHLIST_32   = 0x3F, // List of 32-vertex patches
};

//////////////////////////////////////////////////////////////////////////
/// SWR_SHADER_TYPE
//////////////////////////////////////////////////////////////////////////
enum SWR_SHADER_TYPE
{
    SHADER_VERTEX,
    SHADER_GEOMETRY,
    SHADER_DOMAIN,
    SHADER_HULL,
    SHADER_PIXEL,
    SHADER_COMPUTE,

    NUM_SHADER_TYPES,
};

//////////////////////////////////////////////////////////////////////////
/// SWR_RENDERTARGET_ATTACHMENT
/// @todo Its not clear what an "attachment" means. Its not common term.
//////////////////////////////////////////////////////////////////////////
enum SWR_RENDERTARGET_ATTACHMENT
{
    SWR_ATTACHMENT_COLOR0,
    SWR_ATTACHMENT_COLOR1,
    SWR_ATTACHMENT_COLOR2,
    SWR_ATTACHMENT_COLOR3,
    SWR_ATTACHMENT_COLOR4,
    SWR_ATTACHMENT_COLOR5,
    SWR_ATTACHMENT_COLOR6,
    SWR_ATTACHMENT_COLOR7,
    SWR_ATTACHMENT_DEPTH,
    SWR_ATTACHMENT_STENCIL,

    SWR_NUM_ATTACHMENTS
};

#define SWR_NUM_RENDERTARGETS 8

#define SWR_ATTACHMENT_COLOR0_BIT 0x001
#define SWR_ATTACHMENT_COLOR1_BIT 0x002
#define SWR_ATTACHMENT_COLOR2_BIT 0x004
#define SWR_ATTACHMENT_COLOR3_BIT 0x008
#define SWR_ATTACHMENT_COLOR4_BIT 0x010
#define SWR_ATTACHMENT_COLOR5_BIT 0x020
#define SWR_ATTACHMENT_COLOR6_BIT 0x040
#define SWR_ATTACHMENT_COLOR7_BIT 0x080
#define SWR_ATTACHMENT_DEPTH_BIT 0x100
#define SWR_ATTACHMENT_STENCIL_BIT 0x200
#define SWR_ATTACHMENT_MASK_ALL 0x3ff
#define SWR_ATTACHMENT_MASK_COLOR 0x0ff


//////////////////////////////////////////////////////////////////////////
/// @brief SWR Inner Tessellation factor ID
/// See above GetTessFactorOutputPosition code for documentation
enum SWR_INNER_TESSFACTOR_ID
{
    SWR_QUAD_U_TRI_INSIDE,
    SWR_QUAD_V_INSIDE,

    SWR_NUM_INNER_TESS_FACTORS,
};

//////////////////////////////////////////////////////////////////////////
/// @brief SWR Outer Tessellation factor ID
/// See above GetTessFactorOutputPosition code for documentation
enum SWR_OUTER_TESSFACTOR_ID
{
    SWR_QUAD_U_EQ0_TRI_U_LINE_DETAIL,
    SWR_QUAD_V_EQ0_TRI_V_LINE_DENSITY,
    SWR_QUAD_U_EQ1_TRI_W,
    SWR_QUAD_V_EQ1,

    SWR_NUM_OUTER_TESS_FACTORS,
};

/////////////////////////////////////////////////////////////////////////
/// simdvertex
/// @brief Defines a vertex element that holds all the data for SIMD vertices.
///        Contains space for position, SGV, and 32 generic attributes
/////////////////////////////////////////////////////////////////////////
enum SWR_VTX_SLOTS
{
    VERTEX_SGV_SLOT                 = 0,
    VERTEX_SGV_RTAI_COMP            = 0,
    VERTEX_SGV_VAI_COMP             = 1,
    VERTEX_SGV_POINT_SIZE_COMP      = 2,
    VERTEX_POSITION_SLOT            = 1,
    VERTEX_POSITION_END_SLOT        = 1,
    VERTEX_CLIPCULL_DIST_LO_SLOT    = (1 + VERTEX_POSITION_END_SLOT), // VS writes lower 4 clip/cull dist
    VERTEX_CLIPCULL_DIST_HI_SLOT    = (2 + VERTEX_POSITION_END_SLOT), // VS writes upper 4 clip/cull dist
    VERTEX_ATTRIB_START_SLOT        = (3 + VERTEX_POSITION_END_SLOT),
    VERTEX_ATTRIB_END_SLOT          = (34 + VERTEX_POSITION_END_SLOT),
    SWR_VTX_NUM_SLOTS               = (1 + VERTEX_ATTRIB_END_SLOT)
};

// SoAoSoA
struct simdvertex
{
    simdvector attrib[SWR_VTX_NUM_SLOTS];
};

#if ENABLE_AVX512_SIMD16
struct simd16vertex
{
    simd16vector attrib[SWR_VTX_NUM_SLOTS];
};

#endif

template <typename SIMD_T>
struct SIMDVERTEX_T
{
    typename SIMD_T::Vec4 attrib[SWR_VTX_NUM_SLOTS];
};

//////////////////////////////////////////////////////////////////////////
/// SWR_SHADER_STATS
/// @brief Structure passed to shader for stats collection.
/////////////////////////////////////////////////////////////////////////
struct SWR_SHADER_STATS
{
    uint32_t numInstExecuted; // This is roughly the API instructions executed and not x86.
};

//////////////////////////////////////////////////////////////////////////
/// SWR_VS_CONTEXT
/// @brief Input to vertex shader
/////////////////////////////////////////////////////////////////////////
struct SWR_VS_CONTEXT
{
    simdvertex* pVin;  // IN: SIMD input vertex data store
    simdvertex* pVout; // OUT: SIMD output vertex data store

    uint32_t    InstanceID; // IN: Instance ID, constant across all verts of the SIMD
    simdscalari VertexID;   // IN: Vertex ID
    simdscalari mask;       // IN: Active mask for shader

    // SIMD16 Frontend fields.
    uint32_t AlternateOffset; // IN: amount to offset for interleaving even/odd simd8 in
                              // simd16vertex output
    simd16scalari mask16;     // IN: Active mask for shader (16-wide)
    simd16scalari VertexID16; // IN: Vertex ID (16-wide)

    SWR_SHADER_STATS stats; // OUT: shader statistics used for archrast.
};

/////////////////////////////////////////////////////////////////////////
/// ScalarCPoint
/// @brief defines a control point element as passed from the output
/// of the hull shader to the input of the domain shader
/////////////////////////////////////////////////////////////////////////
struct ScalarAttrib
{
    float x;
    float y;
    float z;
    float w;
};

struct ScalarCPoint
{
    ScalarAttrib attrib[SWR_VTX_NUM_SLOTS];
};

//////////////////////////////////////////////////////////////////////////
/// SWR_TESSELLATION_FACTORS
/// @brief Tessellation factors structure (non-vector)
/////////////////////////////////////////////////////////////////////////
struct SWR_TESSELLATION_FACTORS
{
    float OuterTessFactors[SWR_NUM_OUTER_TESS_FACTORS];
    float InnerTessFactors[SWR_NUM_INNER_TESS_FACTORS];
};

#define MAX_NUM_VERTS_PER_PRIM 32 // support up to 32 control point patches
struct ScalarPatch
{
    SWR_TESSELLATION_FACTORS tessFactors;
    ScalarCPoint             cp[MAX_NUM_VERTS_PER_PRIM];
    ScalarCPoint             patchData;
};

//////////////////////////////////////////////////////////////////////////
/// SWR_HS_CONTEXT
/// @brief Input to hull shader
/////////////////////////////////////////////////////////////////////////
struct SWR_HS_CONTEXT
{
    simdvertex       vert[MAX_NUM_VERTS_PER_PRIM]; // IN: (SIMD) input primitive data
    simdscalari      PrimitiveID;                  // IN: (SIMD) primitive ID generated from the draw call
    simdscalari      mask;                         // IN: Active mask for shader
    ScalarPatch*     pCPout;                       // OUT: Output control point patch SIMD-sized-array of SCALAR patches
    SWR_SHADER_STATS stats;                        // OUT: shader statistics used for archrast.
};

//////////////////////////////////////////////////////////////////////////
/// SWR_DS_CONTEXT
/// @brief Input to domain shader
/////////////////////////////////////////////////////////////////////////
struct SWR_DS_CONTEXT
{
    uint32_t        PrimitiveID;    // IN: (SCALAR) PrimitiveID for the patch associated with the DS invocation
    uint32_t        vectorOffset;   // IN: (SCALAR) vector index offset into SIMD data.
    uint32_t        vectorStride;   // IN: (SCALAR) stride (in vectors) of output data per attribute-component
    uint32_t        outVertexAttribOffset; // IN: (SCALAR) Offset to the attributes as processed by the next shader stage.
    ScalarPatch*    pCpIn;          // IN: (SCALAR) Control patch
    simdscalar*     pDomainU;       // IN: (SIMD) Domain Point U coords
    simdscalar*     pDomainV;       // IN: (SIMD) Domain Point V coords
    simdscalari     mask;           // IN: Active mask for shader
    simdscalar*     pOutputData;    // OUT: (SIMD) Vertex Attributes (2D array of vectors, one row per attribute-component)
    SWR_SHADER_STATS stats;         // OUT: shader statistics used for archrast.
};

//////////////////////////////////////////////////////////////////////////
/// SWR_GS_CONTEXT
/// @brief Input to geometry shader.
/////////////////////////////////////////////////////////////////////////
struct SWR_GS_CONTEXT
{
    simdvector* pVerts;                    // IN: input primitive data for SIMD prims
    uint32_t    inputVertStride;           // IN: input vertex stride, in attributes
    simdscalari PrimitiveID;               // IN: input primitive ID generated from the draw call
    uint32_t    InstanceID;                // IN: input instance ID
    simdscalari mask;                      // IN: Active mask for shader
    uint8_t*    pStreams[KNOB_SIMD_WIDTH]; // OUT: output stream (contains vertices for all output streams)
    SWR_SHADER_STATS stats;                // OUT: shader statistics used for archrast.
};

struct PixelPositions
{
    simdscalar UL;
    simdscalar center;
    simdscalar sample;
    simdscalar centroid;
};

#define SWR_MAX_NUM_MULTISAMPLES 16

//////////////////////////////////////////////////////////////////////////
/// SWR_PS_CONTEXT
/// @brief Input to pixel shader.
/////////////////////////////////////////////////////////////////////////
struct SWR_PS_CONTEXT
{
    PixelPositions vX;         // IN: x location(s) of pixels
    PixelPositions vY;         // IN: x location(s) of pixels
    simdscalar     vZ;         // INOUT: z location of pixels
    simdscalari    activeMask; // OUT: mask for kill
    simdscalar     inputMask;  // IN: input coverage mask for all samples
    simdscalari    oMask;      // OUT: mask for output coverage

    PixelPositions vI; // barycentric coords evaluated at pixel center, sample position, centroid
    PixelPositions vJ;
    PixelPositions vOneOverW; // IN: 1/w

    const float* pAttribs;      // IN: pointer to attribute barycentric coefficients
    const float* pPerspAttribs; // IN: pointer to attribute/w barycentric coefficients
    const float* pRecipW;       // IN: pointer to 1/w coord for each vertex
    const float* I;             // IN: Barycentric A, B, and C coefs used to compute I
    const float* J;             // IN: Barycentric A, B, and C coefs used to compute J
    float        recipDet;      // IN: 1/Det, used when barycentric interpolating attributes
    const float* pSamplePosX;   // IN: array of sample positions
    const float* pSamplePosY;   // IN: array of sample positions
    simdvector   shaded[SWR_NUM_RENDERTARGETS]; // OUT: result color per rendertarget

    uint32_t frontFace;              // IN: front- 1, back- 0
    uint32_t sampleIndex;            // IN: sampleIndex
    uint32_t renderTargetArrayIndex; // IN: render target array index from GS
    uint32_t rasterizerSampleCount;  // IN: sample count used by the rasterizer

    uint8_t* pColorBuffer[SWR_NUM_RENDERTARGETS]; // IN: Pointers to render target hottiles

    SWR_SHADER_STATS stats; // OUT: shader statistics used for archrast.
};

//////////////////////////////////////////////////////////////////////////
/// SWR_CS_CONTEXT
/// @brief Input to compute shader.
/////////////////////////////////////////////////////////////////////////
struct SWR_CS_CONTEXT
{
    // The ThreadGroupId is the current thread group index relative
    // to all thread groups in the Dispatch call. The ThreadId, ThreadIdInGroup,
    // and ThreadIdInGroupFlattened can be derived from ThreadGroupId in the shader.

    // Compute shader accepts the following system values.
    // o ThreadId - Current thread id relative to all other threads in dispatch.
    // o ThreadGroupId - Current thread group id relative to all other groups in dispatch.
    // o ThreadIdInGroup - Current thread relative to all threads in the current thread group.
    // o ThreadIdInGroupFlattened - Flattened linear id derived from ThreadIdInGroup.
    //
    // All of these system values can be computed in the shader. They will be
    // derived from the current tile counter. The tile counter is an atomic counter that
    // resides in the draw context and is initialized to the product of the dispatch dims.
    //
    //  tileCounter = dispatchDims.x * dispatchDims.y * dispatchDims.z
    //
    // Each CPU worker thread will atomically decrement this counter and passes the current
    // count into the shader. When the count reaches 0 then all thread groups in the
    // dispatch call have been completed.

    uint32_t tileCounter; // The tile counter value for this thread group.

    // Dispatch dimensions used by shader to compute system values from the tile counter.
    uint32_t dispatchDims[3];

    uint8_t* pTGSM;               // Thread Group Shared Memory pointer.
    uint8_t* pSpillFillBuffer;    // Spill/fill buffer for barrier support
    uint8_t* pScratchSpace;       // Pointer to scratch space buffer used by the shader, shader is
                                  // responsible for subdividing scratch space per instance/simd
    uint32_t scratchSpacePerSimd; // Scratch space per work item x SIMD_WIDTH

    SWR_SHADER_STATS stats; // OUT: shader statistics used for archrast.
};

// enums
enum SWR_TILE_MODE
{
    SWR_TILE_NONE = 0x0,   // Linear mode (no tiling)
    SWR_TILE_MODE_WMAJOR,  // W major tiling
    SWR_TILE_MODE_XMAJOR,  // X major tiling
    SWR_TILE_MODE_YMAJOR,  // Y major tiling
    SWR_TILE_SWRZ,         // SWR-Z tiling

    SWR_TILE_MODE_COUNT
};

enum SWR_SURFACE_TYPE
{
    SURFACE_1D                = 0,
    SURFACE_2D                = 1,
    SURFACE_3D                = 2,
    SURFACE_CUBE              = 3,
    SURFACE_BUFFER            = 4,
    SURFACE_STRUCTURED_BUFFER = 5,
    SURFACE_NULL              = 7
};

enum SWR_ZFUNCTION
{
    ZFUNC_ALWAYS,
    ZFUNC_NEVER,
    ZFUNC_LT,
    ZFUNC_EQ,
    ZFUNC_LE,
    ZFUNC_GT,
    ZFUNC_NE,
    ZFUNC_GE,
    NUM_ZFUNC
};

enum SWR_STENCILOP
{
    STENCILOP_KEEP,
    STENCILOP_ZERO,
    STENCILOP_REPLACE,
    STENCILOP_INCRSAT,
    STENCILOP_DECRSAT,
    STENCILOP_INCR,
    STENCILOP_DECR,
    STENCILOP_INVERT
};

enum SWR_BLEND_FACTOR
{
    BLENDFACTOR_ONE,
    BLENDFACTOR_SRC_COLOR,
    BLENDFACTOR_SRC_ALPHA,
    BLENDFACTOR_DST_ALPHA,
    BLENDFACTOR_DST_COLOR,
    BLENDFACTOR_SRC_ALPHA_SATURATE,
    BLENDFACTOR_CONST_COLOR,
    BLENDFACTOR_CONST_ALPHA,
    BLENDFACTOR_SRC1_COLOR,
    BLENDFACTOR_SRC1_ALPHA,
    BLENDFACTOR_ZERO,
    BLENDFACTOR_INV_SRC_COLOR,
    BLENDFACTOR_INV_SRC_ALPHA,
    BLENDFACTOR_INV_DST_ALPHA,
    BLENDFACTOR_INV_DST_COLOR,
    BLENDFACTOR_INV_CONST_COLOR,
    BLENDFACTOR_INV_CONST_ALPHA,
    BLENDFACTOR_INV_SRC1_COLOR,
    BLENDFACTOR_INV_SRC1_ALPHA
};

enum SWR_BLEND_OP
{
    BLENDOP_ADD,
    BLENDOP_SUBTRACT,
    BLENDOP_REVSUBTRACT,
    BLENDOP_MIN,
    BLENDOP_MAX,
};

enum SWR_LOGIC_OP
{
    LOGICOP_CLEAR,
    LOGICOP_NOR,
    LOGICOP_AND_INVERTED,
    LOGICOP_COPY_INVERTED,
    LOGICOP_AND_REVERSE,
    LOGICOP_INVERT,
    LOGICOP_XOR,
    LOGICOP_NAND,
    LOGICOP_AND,
    LOGICOP_EQUIV,
    LOGICOP_NOOP,
    LOGICOP_OR_INVERTED,
    LOGICOP_COPY,
    LOGICOP_OR_REVERSE,
    LOGICOP_OR,
    LOGICOP_SET,
};

//////////////////////////////////////////////////////////////////////////
/// SWR_AUX_MODE
/// @brief Specifies how the auxiliary buffer is used by the driver.
//////////////////////////////////////////////////////////////////////////
enum SWR_AUX_MODE
{
    AUX_MODE_NONE,
    AUX_MODE_COLOR,
    AUX_MODE_UAV,
    AUX_MODE_DEPTH,
};

struct SWR_LOD_OFFSETS
{
    uint32_t offsets[2][15];
};

//////////////////////////////////////////////////////////////////////////
/// SWR_SURFACE_STATE
//////////////////////////////////////////////////////////////////////////
struct SWR_SURFACE_STATE
{
    gfxptr_t         xpBaseAddress;
    SWR_SURFACE_TYPE type;   // @llvm_enum
    SWR_FORMAT       format; // @llvm_enum
    uint32_t         width;
    uint32_t         height;
    uint32_t         depth;
    uint32_t         numSamples;
    uint32_t         samplePattern;
    uint32_t         pitch;
    uint32_t         qpitch;
    uint32_t minLod; // for sampled surfaces, the most detailed LOD that can be accessed by sampler
    uint32_t maxLod; // for sampled surfaces, the max LOD that can be accessed
    float    resourceMinLod; // for sampled surfaces, the most detailed fractional mip that can be
                             // accessed by sampler
    uint32_t lod;            // for render targets, the lod being rendered to
    uint32_t arrayIndex; // for render targets, the array index being rendered to for arrayed surfaces
    SWR_TILE_MODE tileMode; // @llvm_enum
    uint32_t      halign;
    uint32_t      valign;
    uint32_t      xOffset;
    uint32_t      yOffset;

    uint32_t lodOffsets[2][15]; // lod offsets for sampled surfaces

    gfxptr_t     xpAuxBaseAddress; // Used for compression, append/consume counter, etc.
    SWR_AUX_MODE auxMode;          // @llvm_enum


    bool bInterleavedSamples; // are MSAA samples stored interleaved or planar
};

// vertex fetch state
// WARNING- any changes to this struct need to be reflected
// in the fetch shader jit
struct SWR_VERTEX_BUFFER_STATE
{
    gfxptr_t xpData;
    uint32_t index;
    uint32_t pitch;
    uint32_t size;
    uint32_t minVertex; // min vertex (for bounds checking)
    uint32_t maxVertex; // size / pitch.  precalculated value used by fetch shader for OOB checks
    uint32_t partialInboundsSize; // size % pitch.  precalculated value used by fetch shader for
                                  // partially OOB vertices
};

struct SWR_INDEX_BUFFER_STATE
{
    gfxptr_t xpIndices;
    // Format type for indices (e.g. UINT16, UINT32, etc.)
    SWR_FORMAT format; // @llvm_enum
    uint32_t   size;
};

//////////////////////////////////////////////////////////////////////////
/// SWR_FETCH_CONTEXT
/// @brief Input to fetch shader.
/// @note WARNING - Changes to this struct need to be reflected in the
///                 fetch shader jit.
/////////////////////////////////////////////////////////////////////////
struct SWR_FETCH_CONTEXT
{
    const SWR_VERTEX_BUFFER_STATE* pStreams;  // IN: array of bound vertex buffers
    gfxptr_t                       xpIndices; // IN: pointer to int32 index buffer for indexed draws
    gfxptr_t    xpLastIndex;   // IN: pointer to end of index buffer, used for bounds checking
    uint32_t    CurInstance;   // IN: current instance
    uint32_t    BaseVertex;    // IN: base vertex
    uint32_t    StartVertex;   // IN: start vertex
    uint32_t    StartInstance; // IN: start instance
    simdscalari VertexID;      // OUT: vector of vertex IDs
    simdscalari CutMask;       // OUT: vector mask of indices which have the cut index value
#if USE_SIMD16_SHADERS
    //    simd16scalari VertexID;                     // OUT: vector of vertex IDs
    //    simd16scalari CutMask;                      // OUT: vector mask of indices which have the
    //    cut index value
    simdscalari VertexID2; // OUT: vector of vertex IDs
    simdscalari CutMask2;  // OUT: vector mask of indices which have the cut index value
#endif
};

//////////////////////////////////////////////////////////////////////////
/// SWR_STATS
///
/// @brief All statistics generated by SWR go here. These are public
///        to driver.
/////////////////////////////////////////////////////////////////////////
OSALIGNLINE(struct) SWR_STATS
{
    // Occlusion Query
    uint64_t DepthPassCount; // Number of passing depth tests. Not exact.

    // Pipeline Stats
    uint64_t PsInvocations; // Number of Pixel Shader invocations
    uint64_t CsInvocations; // Number of Compute Shader invocations

};

//////////////////////////////////////////////////////////////////////////
/// SWR_STATS
///
/// @brief All statistics generated by FE.
/////////////////////////////////////////////////////////////////////////
OSALIGNLINE(struct) SWR_STATS_FE
{
    uint64_t IaVertices;    // Number of Fetch Shader vertices
    uint64_t IaPrimitives;  // Number of PA primitives.
    uint64_t VsInvocations; // Number of Vertex Shader invocations
    uint64_t HsInvocations; // Number of Hull Shader invocations
    uint64_t DsInvocations; // Number of Domain Shader invocations
    uint64_t GsInvocations; // Number of Geometry Shader invocations
    uint64_t GsPrimitives;  // Number of prims GS outputs.
    uint64_t CInvocations;  // Number of clipper invocations
    uint64_t CPrimitives;   // Number of clipper primitives.

    // Streamout Stats
    uint64_t SoPrimStorageNeeded[4];
    uint64_t SoNumPrimsWritten[4];
};

    //////////////////////////////////////////////////////////////////////////
    /// STREAMOUT_BUFFERS
    /////////////////////////////////////////////////////////////////////////

#define MAX_SO_STREAMS 4
#define MAX_SO_BUFFERS 4
#define MAX_ATTRIBUTES 32

struct SWR_STREAMOUT_BUFFER
{
    // Pointers to streamout buffers.
    uint32_t* pBuffer;

    // Offset to the SO write offset. If not null then we update offset here.
    uint32_t* pWriteOffset;

    bool enable;
    bool soWriteEnable;

    // Size of buffer in dwords.
    uint32_t bufferSize;

    // Vertex pitch of buffer in dwords.
    uint32_t pitch;

    // Offset into buffer in dwords. SOS will increment this offset.
    uint32_t streamOffset;
};

//////////////////////////////////////////////////////////////////////////
/// STREAMOUT_STATE
/////////////////////////////////////////////////////////////////////////
struct SWR_STREAMOUT_STATE
{
    // This disables stream output.
    bool soEnable;

    // which streams are enabled for streamout
    bool streamEnable[MAX_SO_STREAMS];

    // If set then do not send any streams to the rasterizer.
    bool rasterizerDisable;

    // Specifies which stream to send to the rasterizer.
    uint32_t streamToRasterizer;

    // The stream masks specify which attributes are sent to which streams.
    // These masks help the FE to setup the pPrimData buffer that is passed
    // the Stream Output Shader (SOS) function.
    uint64_t streamMasks[MAX_SO_STREAMS];

    // Number of attributes, including position, per vertex that are streamed out.
    // This should match number of bits in stream mask.
    uint32_t streamNumEntries[MAX_SO_STREAMS];

    // Offset to the start of the attributes of the input vertices, in simdvector units
    uint32_t vertexAttribOffset[MAX_SO_STREAMS];
};

//////////////////////////////////////////////////////////////////////////
/// STREAMOUT_CONTEXT - Passed to SOS
/////////////////////////////////////////////////////////////////////////
struct SWR_STREAMOUT_CONTEXT
{
    uint32_t*             pPrimData;
    SWR_STREAMOUT_BUFFER* pBuffer[MAX_SO_STREAMS];

    // Num prims written for this stream
    uint32_t numPrimsWritten;

    // Num prims that should have been written if there were no overflow.
    uint32_t numPrimStorageNeeded;
};

//////////////////////////////////////////////////////////////////////////
/// SWR_GS_STATE - Geometry shader state
/////////////////////////////////////////////////////////////////////////
struct SWR_GS_STATE
{
    bool gsEnable;

    // If true, geometry shader emits a single stream, with separate cut buffer.
    // If false, geometry shader emits vertices for multiple streams to the stream buffer, with a
    // separate StreamID buffer to map vertices to streams
    bool isSingleStream;

    // Number of input attributes per vertex. Used by the frontend to
    // optimize assembling primitives for GS
    uint32_t numInputAttribs;

    // Stride of incoming verts in attributes
    uint32_t inputVertStride;

    // Output topology - can be point, tristrip, linestrip, or rectlist
    PRIMITIVE_TOPOLOGY outputTopology; // @llvm_enum

    // Maximum number of verts that can be emitted by a single instance of the GS
    uint32_t maxNumVerts;

    // Instance count
    uint32_t instanceCount;

    // When single stream is enabled, singleStreamID dictates which stream is being output.
    // field ignored if isSingleStream is false
    uint32_t singleStreamID;

    // Total amount of memory to allocate for one instance of the shader output in bytes
    uint32_t allocationSize;

    // Offset to the start of the attributes of the input vertices, in simdvector units, as read by
    // the GS
    uint32_t vertexAttribOffset;

    // Offset to the attributes as stored by the preceding shader stage.
    uint32_t srcVertexAttribOffset;

    // Size of the control data section which contains cut or streamID data, in simdscalar units.
    // Should be sized to handle the maximum number of verts output by the GS. Can be 0 if there are
    // no cuts or streamID bits.
    uint32_t controlDataSize;

    // Offset to the control data section, in bytes
    uint32_t controlDataOffset;

    // Total size of an output vertex, in simdvector units
    uint32_t outputVertexSize;

    // Offset to the start of the vertex section, in bytes
    uint32_t outputVertexOffset;

    // Set this to non-zero to indicate that the shader outputs a static number of verts. If zero,
    // shader is expected to store the final vertex count in the first dword of the gs output
    // stream.
    uint32_t staticVertexCount;

    uint32_t pad;
};
static_assert(sizeof(SWR_GS_STATE) == 64, "Adjust padding to keep size (or remove this assert)");

//////////////////////////////////////////////////////////////////////////
/// SWR_TS_OUTPUT_TOPOLOGY - Defines data output by the tessellator / DS
/////////////////////////////////////////////////////////////////////////
enum SWR_TS_OUTPUT_TOPOLOGY
{
    SWR_TS_OUTPUT_POINT,
    SWR_TS_OUTPUT_LINE,
    SWR_TS_OUTPUT_TRI_CW,
    SWR_TS_OUTPUT_TRI_CCW,

    SWR_TS_OUTPUT_TOPOLOGY_COUNT
};

//////////////////////////////////////////////////////////////////////////
/// SWR_TS_PARTITIONING - Defines tessellation algorithm
/////////////////////////////////////////////////////////////////////////
enum SWR_TS_PARTITIONING
{
    SWR_TS_INTEGER,
    SWR_TS_ODD_FRACTIONAL,
    SWR_TS_EVEN_FRACTIONAL,

    SWR_TS_PARTITIONING_COUNT
};

//////////////////////////////////////////////////////////////////////////
/// SWR_TS_DOMAIN - Defines Tessellation Domain
/////////////////////////////////////////////////////////////////////////
enum SWR_TS_DOMAIN
{
    SWR_TS_QUAD,
    SWR_TS_TRI,
    SWR_TS_ISOLINE,

    SWR_TS_DOMAIN_COUNT
};

//////////////////////////////////////////////////////////////////////////
/// SWR_TS_STATE - Tessellation state
/////////////////////////////////////////////////////////////////////////
struct SWR_TS_STATE
{
    bool tsEnable;

    SWR_TS_OUTPUT_TOPOLOGY tsOutputTopology; // @llvm_enum
    SWR_TS_PARTITIONING    partitioning;     // @llvm_enum
    SWR_TS_DOMAIN          domain;           // @llvm_enum

    PRIMITIVE_TOPOLOGY postDSTopology; // @llvm_enum

    uint32_t numHsInputAttribs;
    uint32_t numHsOutputAttribs;
    uint32_t numDsOutputAttribs;
    uint32_t dsAllocationSize;
    uint32_t dsOutVtxAttribOffset;

    // Offset to the start of the attributes of the input vertices, in simdvector units
    uint32_t vertexAttribOffset;
};

// output merger state
struct SWR_RENDER_TARGET_BLEND_STATE
{
    uint8_t writeDisableRed : 1;
    uint8_t writeDisableGreen : 1;
    uint8_t writeDisableBlue : 1;
    uint8_t writeDisableAlpha : 1;
};
static_assert(sizeof(SWR_RENDER_TARGET_BLEND_STATE) == 1,
              "Invalid SWR_RENDER_TARGET_BLEND_STATE size");

enum SWR_MULTISAMPLE_COUNT
{
    SWR_MULTISAMPLE_1X = 0,
    SWR_MULTISAMPLE_2X,
    SWR_MULTISAMPLE_4X,
    SWR_MULTISAMPLE_8X,
    SWR_MULTISAMPLE_16X,
    SWR_MULTISAMPLE_TYPE_COUNT
};

static INLINE uint32_t GetNumSamples(/* SWR_SAMPLE_COUNT */ int sampleCountEnum) // @llvm_func_start
{
    return uint32_t(1) << sampleCountEnum;
} // @llvm_func_end

struct SWR_BLEND_STATE
{
    // constant blend factor color in RGBA float
    float constantColor[4];

    // alpha test reference value in unorm8 or float32
    uint32_t alphaTestReference;
    uint32_t sampleMask;
    // all RT's have the same sample count
    ///@todo move this to Output Merger state when we refactor
    SWR_MULTISAMPLE_COUNT sampleCount; // @llvm_enum

    SWR_RENDER_TARGET_BLEND_STATE renderTarget[SWR_NUM_RENDERTARGETS];
};
static_assert(sizeof(SWR_BLEND_STATE) == 36, "Invalid SWR_BLEND_STATE size");

struct SWR_BLEND_CONTEXT
{
    const SWR_BLEND_STATE* pBlendState;
    simdvector*            src;
    simdvector*            src1;
    simdvector*            src0alpha;
    uint32_t               sampleNum;
    simdvector*            pDst;
    simdvector*            result;
    simdscalari*           oMask;
    simdscalari*           pMask;
    uint32_t               isAlphaTested;
    uint32_t               isAlphaBlended;
};

//////////////////////////////////////////////////////////////////////////
/// FUNCTION POINTERS FOR SHADERS

#if USE_SIMD16_SHADERS
typedef void(__cdecl *PFN_FETCH_FUNC)(HANDLE hPrivateData, HANDLE hWorkerPrivateData, SWR_FETCH_CONTEXT& fetchInfo, simd16vertex& out);
#else
typedef void(__cdecl *PFN_FETCH_FUNC)(HANDLE hPrivateData, HANDLE hWorkerPrivateData, SWR_FETCH_CONTEXT& fetchInfo, simdvertex& out);
#endif
typedef void(__cdecl *PFN_VERTEX_FUNC)(HANDLE hPrivateData, HANDLE hWorkerPrivateData, SWR_VS_CONTEXT* pVsContext);
typedef void(__cdecl *PFN_HS_FUNC)(HANDLE hPrivateData, HANDLE hWorkerPrivateData, SWR_HS_CONTEXT* pHsContext);
typedef void(__cdecl *PFN_DS_FUNC)(HANDLE hPrivateData, HANDLE hWorkerPrivateData, SWR_DS_CONTEXT* pDsContext);
typedef void(__cdecl *PFN_GS_FUNC)(HANDLE hPrivateData, HANDLE hWorkerPrivateData, SWR_GS_CONTEXT* pGsContext);
typedef void(__cdecl *PFN_CS_FUNC)(HANDLE hPrivateData, HANDLE hWorkerPrivateData, SWR_CS_CONTEXT* pCsContext);
typedef void(__cdecl *PFN_SO_FUNC)(SWR_STREAMOUT_CONTEXT& soContext);
typedef void(__cdecl *PFN_PIXEL_KERNEL)(HANDLE hPrivateData, HANDLE hWorkerPrivateData, SWR_PS_CONTEXT* pContext);
typedef void(__cdecl *PFN_CPIXEL_KERNEL)(HANDLE hPrivateData, HANDLE hWorkerPrivateData, SWR_PS_CONTEXT* pContext);
typedef void(__cdecl *PFN_BLEND_JIT_FUNC)(SWR_BLEND_CONTEXT*);
typedef simdscalar(*PFN_QUANTIZE_DEPTH)(simdscalar const &);


//////////////////////////////////////////////////////////////////////////
/// FRONTEND_STATE
/////////////////////////////////////////////////////////////////////////
struct SWR_FRONTEND_STATE
{
    // skip clip test, perspective divide, and viewport transform
    // intended for verts in screen space
    bool vpTransformDisable;
    bool bEnableCutIndex;
    union
    {
        struct
        {
            uint32_t triFan : 2;
            uint32_t lineStripList : 1;
            uint32_t triStripList : 2;
        };
        uint32_t bits;
    } provokingVertex;
    uint32_t topologyProvokingVertex; // provoking vertex for the draw topology

    // Size of a vertex in simdvector units. Should be sized to the
    // maximum of the input/output of the vertex shader.
    uint32_t vsVertexSize;
};

//////////////////////////////////////////////////////////////////////////
/// VIEWPORT_MATRIX
/////////////////////////////////////////////////////////////////////////
struct SWR_VIEWPORT_MATRIX
{
    float m00;
    float m11;
    float m22;
    float m30;
    float m31;
    float m32;
};

//////////////////////////////////////////////////////////////////////////
/// VIEWPORT_MATRIXES
/////////////////////////////////////////////////////////////////////////
struct SWR_VIEWPORT_MATRICES
{
    float m00[KNOB_NUM_VIEWPORTS_SCISSORS];
    float m11[KNOB_NUM_VIEWPORTS_SCISSORS];
    float m22[KNOB_NUM_VIEWPORTS_SCISSORS];
    float m30[KNOB_NUM_VIEWPORTS_SCISSORS];
    float m31[KNOB_NUM_VIEWPORTS_SCISSORS];
    float m32[KNOB_NUM_VIEWPORTS_SCISSORS];
};

//////////////////////////////////////////////////////////////////////////
/// SWR_VIEWPORT
/////////////////////////////////////////////////////////////////////////
struct SWR_VIEWPORT
{
    float x;
    float y;
    float width;
    float height;
    float minZ;
    float maxZ;
};

//////////////////////////////////////////////////////////////////////////
/// SWR_CULLMODE
//////////////////////////////////////////////////////////////////////////
enum SWR_CULLMODE
{
    SWR_CULLMODE_BOTH,
    SWR_CULLMODE_NONE,
    SWR_CULLMODE_FRONT,
    SWR_CULLMODE_BACK
};

enum SWR_FILLMODE
{
    SWR_FILLMODE_POINT,
    SWR_FILLMODE_WIREFRAME,
    SWR_FILLMODE_SOLID
};

enum SWR_FRONTWINDING
{
    SWR_FRONTWINDING_CW,
    SWR_FRONTWINDING_CCW
};


enum SWR_PIXEL_LOCATION
{
    SWR_PIXEL_LOCATION_CENTER,
    SWR_PIXEL_LOCATION_UL,
};

// fixed point screen space sample locations within a pixel
struct SWR_MULTISAMPLE_POS
{
public:
    INLINE void SetXi(uint32_t sampleNum, uint32_t val) { _xi[sampleNum] = val; };   // @llvm_func
    INLINE void SetYi(uint32_t sampleNum, uint32_t val) { _yi[sampleNum] = val; };   // @llvm_func
    INLINE uint32_t Xi(uint32_t sampleNum) const { return _xi[sampleNum]; };         // @llvm_func
    INLINE uint32_t Yi(uint32_t sampleNum) const { return _yi[sampleNum]; };         // @llvm_func
    INLINE void     SetX(uint32_t sampleNum, float val) { _x[sampleNum] = val; };    // @llvm_func
    INLINE void     SetY(uint32_t sampleNum, float val) { _y[sampleNum] = val; };    // @llvm_func
    INLINE float    X(uint32_t sampleNum) const { return _x[sampleNum]; };           // @llvm_func
    INLINE float    Y(uint32_t sampleNum) const { return _y[sampleNum]; };           // @llvm_func
    typedef const float (&sampleArrayT)[SWR_MAX_NUM_MULTISAMPLES];                   //@llvm_typedef
    INLINE sampleArrayT X() const { return _x; };                                    // @llvm_func
    INLINE sampleArrayT Y() const { return _y; };                                    // @llvm_func
    INLINE const __m128i& vXi(uint32_t sampleNum) const { return _vXi[sampleNum]; }; // @llvm_func
    INLINE const __m128i& vYi(uint32_t sampleNum) const { return _vYi[sampleNum]; }; // @llvm_func
    INLINE const simdscalar& vX(uint32_t sampleNum) const { return _vX[sampleNum]; }; // @llvm_func
    INLINE const simdscalar& vY(uint32_t sampleNum) const { return _vY[sampleNum]; }; // @llvm_func
    INLINE const __m128i& TileSampleOffsetsX() const { return tileSampleOffsetsX; };  // @llvm_func
    INLINE const __m128i& TileSampleOffsetsY() const { return tileSampleOffsetsY; };  // @llvm_func

    INLINE void PrecalcSampleData(int numSamples); //@llvm_func

private:
    template <typename MaskT>
    INLINE __m128i expandThenBlend4(uint32_t* min, uint32_t* max); // @llvm_func
    INLINE void    CalcTileSampleOffsets(int numSamples);          // @llvm_func

    // scalar sample values
    uint32_t _xi[SWR_MAX_NUM_MULTISAMPLES];
    uint32_t _yi[SWR_MAX_NUM_MULTISAMPLES];
    float    _x[SWR_MAX_NUM_MULTISAMPLES];
    float    _y[SWR_MAX_NUM_MULTISAMPLES];

    // precalc'd / vectorized samples
    __m128i    _vXi[SWR_MAX_NUM_MULTISAMPLES];
    __m128i    _vYi[SWR_MAX_NUM_MULTISAMPLES];
    simdscalar _vX[SWR_MAX_NUM_MULTISAMPLES];
    simdscalar _vY[SWR_MAX_NUM_MULTISAMPLES];
    __m128i    tileSampleOffsetsX;
    __m128i    tileSampleOffsetsY;
};

//////////////////////////////////////////////////////////////////////////
/// SWR_RASTSTATE
//////////////////////////////////////////////////////////////////////////
struct SWR_RASTSTATE
{
    uint32_t cullMode : 2;
    uint32_t fillMode : 2;
    uint32_t frontWinding : 1;
    uint32_t scissorEnable : 1;
    uint32_t depthClipEnable : 1;
    uint32_t clipHalfZ : 1;
    uint32_t pointParam : 1;
    uint32_t pointSpriteEnable : 1;
    uint32_t pointSpriteTopOrigin : 1;
    uint32_t forcedSampleCount : 1;
    uint32_t pixelOffset : 1;
    uint32_t depthBiasPreAdjusted : 1; ///< depth bias constant is in float units, not per-format Z units
    uint32_t conservativeRast : 1;

    float pointSize;
    float lineWidth;

    float      depthBias;
    float      slopeScaledDepthBias;
    float      depthBiasClamp;
    SWR_FORMAT depthFormat; // @llvm_enum

    // sample count the rasterizer is running at
    SWR_MULTISAMPLE_COUNT sampleCount;      // @llvm_enum
    uint32_t              pixelLocation;    // UL or Center
    SWR_MULTISAMPLE_POS   samplePositions;  // @llvm_struct
    bool                  bIsCenterPattern; // @llvm_enum
};


enum SWR_CONSTANT_SOURCE
{
    SWR_CONSTANT_SOURCE_CONST_0000,
    SWR_CONSTANT_SOURCE_CONST_0001_FLOAT,
    SWR_CONSTANT_SOURCE_CONST_1111_FLOAT,
    SWR_CONSTANT_SOURCE_PRIM_ID
};

struct SWR_ATTRIB_SWIZZLE
{
    uint16_t sourceAttrib : 5;          // source attribute
    uint16_t constantSource : 2;        // constant source to apply
    uint16_t componentOverrideMask : 4; // override component with constant source
};

// backend state
struct SWR_BACKEND_STATE
{
    uint32_t constantInterpolationMask; // bitmask indicating which attributes have constant
                                        // interpolation
    uint32_t pointSpriteTexCoordMask;   // bitmask indicating the attribute(s) which should be
                                        // interpreted as tex coordinates

    bool swizzleEnable;        // when enabled, core will parse the swizzle map when
                               // setting up attributes for the backend, otherwise
                               // all attributes up to numAttributes will be sent
    uint8_t numAttributes;     // total number of attributes to send to backend (up to 32)
    uint8_t numComponents[32]; // number of components to setup per attribute, this reduces some
                               // calculations for unneeded components

    bool readRenderTargetArrayIndex; // Forward render target array index from last FE stage to the
                                     // backend
    bool readViewportArrayIndex;     // Read viewport array index from last FE stage during binning

    // User clip/cull distance enables
    uint8_t cullDistanceMask;
    uint8_t clipDistanceMask;

    // padding to ensure swizzleMap starts 64B offset from start of the struct
    // and that the next fields are dword aligned.
    uint8_t pad[10];

    // Offset to the start of the attributes of the input vertices, in simdvector units
    uint32_t vertexAttribOffset;

    // Offset to clip/cull attrib section of the vertex, in simdvector units
    uint32_t vertexClipCullOffset;

    SWR_ATTRIB_SWIZZLE swizzleMap[32];
};
static_assert(sizeof(SWR_BACKEND_STATE) == 128,
              "Adjust padding to keep size (or remove this assert)");


union SWR_DEPTH_STENCIL_STATE
{
    struct
    {
        // dword 0
        uint32_t depthWriteEnable : 1;
        uint32_t depthTestEnable : 1;
        uint32_t stencilWriteEnable : 1;
        uint32_t stencilTestEnable : 1;
        uint32_t doubleSidedStencilTestEnable : 1;

        uint32_t depthTestFunc : 3;
        uint32_t stencilTestFunc : 3;

        uint32_t backfaceStencilPassDepthPassOp : 3;
        uint32_t backfaceStencilPassDepthFailOp : 3;
        uint32_t backfaceStencilFailOp : 3;
        uint32_t backfaceStencilTestFunc : 3;
        uint32_t stencilPassDepthPassOp : 3;
        uint32_t stencilPassDepthFailOp : 3;
        uint32_t stencilFailOp : 3;

        // dword 1
        uint8_t backfaceStencilWriteMask;
        uint8_t backfaceStencilTestMask;
        uint8_t stencilWriteMask;
        uint8_t stencilTestMask;

        // dword 2
        uint8_t backfaceStencilRefValue;
        uint8_t stencilRefValue;
    };
    uint32_t value[3];
};

enum SWR_SHADING_RATE
{
    SWR_SHADING_RATE_PIXEL,
    SWR_SHADING_RATE_SAMPLE,
    SWR_SHADING_RATE_COUNT,
};

enum SWR_INPUT_COVERAGE
{
    SWR_INPUT_COVERAGE_NONE,
    SWR_INPUT_COVERAGE_NORMAL,
    SWR_INPUT_COVERAGE_INNER_CONSERVATIVE,
    SWR_INPUT_COVERAGE_COUNT,
};

enum SWR_PS_POSITION_OFFSET
{
    SWR_PS_POSITION_SAMPLE_NONE,
    SWR_PS_POSITION_SAMPLE_OFFSET,
    SWR_PS_POSITION_CENTROID_OFFSET,
    SWR_PS_POSITION_OFFSET_COUNT,
};

enum SWR_BARYCENTRICS_MASK
{
    SWR_BARYCENTRIC_PER_PIXEL_MASK  = 0x1,
    SWR_BARYCENTRIC_CENTROID_MASK   = 0x2,
    SWR_BARYCENTRIC_PER_SAMPLE_MASK = 0x4,
};

// pixel shader state
struct SWR_PS_STATE
{
    // dword 0-1
    PFN_PIXEL_KERNEL pfnPixelShader; // @llvm_pfn

    // dword 2
    uint32_t killsPixel : 1;      // pixel shader can kill pixels
    uint32_t inputCoverage : 2;   // ps uses input coverage
    uint32_t writesODepth : 1;    // pixel shader writes to depth
    uint32_t usesSourceDepth : 1; // pixel shader reads depth
    uint32_t shadingRate : 2;     // shading per pixel / sample / coarse pixel
    uint32_t posOffset : 2; // type of offset (none, sample, centroid) to add to pixel position
    uint32_t barycentricsMask : 3; // which type(s) of barycentric coords does the PS interpolate
                                   // attributes with
    uint32_t usesUAV : 1;          // pixel shader accesses UAV
    uint32_t forceEarlyZ : 1;      // force execution of early depth/stencil test

    uint8_t renderTargetMask; // Mask of render targets written
};

// depth bounds state
struct SWR_DEPTH_BOUNDS_STATE
{
    bool  depthBoundsTestEnable;
    float depthBoundsTestMinValue;
    float depthBoundsTestMaxValue;
};
// clang-format on
