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/****************************************************************************
* Copyright (C) 2014-2015 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 blend_jit.h
*
* @brief Definition of the blend jitter
*
* Notes:
*
******************************************************************************/
#pragma once
#include "common/formats.h"
#include "core/state.h"
struct RENDER_TARGET_BLEND_COMPILE_STATE
{
bool blendEnable;
bool logicOpEnable;
SWR_BLEND_FACTOR sourceAlphaBlendFactor;
SWR_BLEND_FACTOR destAlphaBlendFactor;
SWR_BLEND_FACTOR sourceBlendFactor;
SWR_BLEND_FACTOR destBlendFactor;
SWR_BLEND_OP colorBlendFunc;
SWR_BLEND_OP alphaBlendFunc;
SWR_LOGIC_OP logicOpFunc;
};
enum ALPHA_TEST_FORMAT
{
ALPHA_TEST_UNORM8,
ALPHA_TEST_FLOAT32
};
//////////////////////////////////////////////////////////////////////////
/// BLEND_DESC
//////////////////////////////////////////////////////////////////////////
struct BLEND_DESC
{
union
{
struct
{
uint32_t alphaTestEnable: 1;
uint32_t independentAlphaBlendEnable: 1;
uint32_t alphaToCoverageEnable: 1;
uint32_t oMaskEnable:1;
uint32_t inputCoverageEnable:1;
uint32_t sampleMaskEnable:1;
uint32_t numSamples:5;
uint32_t _reserved : 21;
};
uint32_t bits;
};
};
#define BLEND_ENABLE_MASK 0x3D // a2c | oMaskEnable | inputCoverageEnable | sampleMaskEnable
//////////////////////////////////////////////////////////////////////////
/// State required for blend jit
//////////////////////////////////////////////////////////////////////////
struct BLEND_COMPILE_STATE
{
SWR_FORMAT format; // format of render target being blended
RENDER_TARGET_BLEND_COMPILE_STATE blendState;
BLEND_DESC desc;
SWR_ZFUNCTION alphaTestFunction;
ALPHA_TEST_FORMAT alphaTestFormat;
bool operator==(const BLEND_COMPILE_STATE& other) const
{
return memcmp(this, &other, sizeof(BLEND_COMPILE_STATE)) == 0;
}
// Canonicalize state to reduce unnecessary JIT compiles
void Canonicalize()
{
if (!desc.alphaTestEnable)
{
alphaTestFormat = (ALPHA_TEST_FORMAT)0;
alphaTestFunction = (SWR_ZFUNCTION)0;
}
if (!blendState.blendEnable)
{
blendState.sourceAlphaBlendFactor = (SWR_BLEND_FACTOR)0;
blendState.destAlphaBlendFactor = (SWR_BLEND_FACTOR)0;
blendState.sourceBlendFactor = (SWR_BLEND_FACTOR)0;
blendState.destBlendFactor = (SWR_BLEND_FACTOR)0;
blendState.colorBlendFunc = (SWR_BLEND_OP)0;
blendState.alphaBlendFunc = (SWR_BLEND_OP)0;
}
if (!blendState.logicOpEnable)
{
blendState.logicOpFunc = (SWR_LOGIC_OP)0;
}
if (!blendState.blendEnable && !blendState.logicOpEnable)
{
format = (SWR_FORMAT)0;
}
if (!desc.independentAlphaBlendEnable)
{
blendState.sourceAlphaBlendFactor = (SWR_BLEND_FACTOR)0;
blendState.destAlphaBlendFactor = (SWR_BLEND_FACTOR)0;
blendState.alphaBlendFunc = (SWR_BLEND_OP)0;
}
}
};
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