streamout_jit.h

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 * Copyright (C) 2014-2015 Intel Corporation.   All Rights Reserved.
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 *
 * @file streamout_jit.h
 *
 * @brief Definition of the streamout jitter
 *
 * Notes:
 *
 ******************************************************************************/
#pragma once

#include "common/formats.h"
#include "core/state.h"

//////////////////////////////////////////////////////////////////////////
/// STREAMOUT_DECL - Stream decl
//////////////////////////////////////////////////////////////////////////
struct STREAMOUT_DECL
{
    // Buffer that stream maps to.
    DWORD bufferIndex;

    // attribute to stream
    uint32_t attribSlot;

    // attribute component mask
    uint32_t componentMask;

    // indicates this decl is a hole
    bool hole;
};

//////////////////////////////////////////////////////////////////////////
/// STREAMOUT_STREAM - Stream decls
//////////////////////////////////////////////////////////////////////////
struct STREAMOUT_STREAM
{
    // number of decls for this stream
    uint32_t numDecls;

    // array of numDecls decls
    STREAMOUT_DECL decl[128];
};

//////////////////////////////////////////////////////////////////////////
/// State required for streamout jit
//////////////////////////////////////////////////////////////////////////
struct STREAMOUT_COMPILE_STATE
{
    // number of verts per primitive
    uint32_t numVertsPerPrim;
    uint32_t
        offsetAttribs; ///< attrib offset to subtract from all STREAMOUT_DECL::attribSlot values.

    uint64_t streamMask;

    // stream decls
    STREAMOUT_STREAM stream;

    bool operator==(const STREAMOUT_COMPILE_STATE& other) const
    {
        if (numVertsPerPrim != other.numVertsPerPrim)
            return false;
        if (stream.numDecls != other.stream.numDecls)
            return false;

        for (uint32_t i = 0; i < stream.numDecls; ++i)
        {
            if (stream.decl[i].bufferIndex != other.stream.decl[i].bufferIndex)
                return false;
            if (stream.decl[i].attribSlot != other.stream.decl[i].attribSlot)
                return false;
            if (stream.decl[i].componentMask != other.stream.decl[i].componentMask)
                return false;
            if (stream.decl[i].hole != other.stream.decl[i].hole)
                return false;
        }

        return true;
    }
};