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/****************************************************************************
* 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 backend.cpp
*
* @brief Backend handles rasterization, pixel shading and output merger
* operations.
*
******************************************************************************/
#include <smmintrin.h>
#include "backend.h"
#include "backend_impl.h"
#include "tilemgr.h"
#include "memory/tilingtraits.h"
#include "core/multisample.h"
#include <algorithm>
template <SWR_FORMAT format>
void ClearRasterTile(uint8_t* pTileBuffer, simd16vector& value)
{
auto lambda = [&](int32_t comp)
{
FormatTraits<format>::storeSOA(comp, pTileBuffer, value.v[comp]);
pTileBuffer += (KNOB_SIMD16_WIDTH * FormatTraits<format>::GetBPC(comp) / 8);
};
const uint32_t numIter =
(KNOB_TILE_Y_DIM / SIMD16_TILE_Y_DIM) * (KNOB_TILE_X_DIM / SIMD16_TILE_X_DIM);
for (uint32_t i = 0; i < numIter; ++i)
{
UnrollerL<0, FormatTraits<format>::numComps, 1>::step(lambda);
}
}
template <SWR_FORMAT format>
INLINE void ClearMacroTile(DRAW_CONTEXT* pDC,
HANDLE hWorkerPrivateData,
SWR_RENDERTARGET_ATTACHMENT rt,
uint32_t macroTile,
uint32_t renderTargetArrayIndex,
uint32_t clear[4],
const SWR_RECT& rect)
{
// convert clear color to hottile format
// clear color is in RGBA float/uint32
simd16vector vClear;
for (uint32_t comp = 0; comp < FormatTraits<format>::numComps; ++comp)
{
simd16scalar vComp = _simd16_load1_ps((const float*)&clear[comp]);
if (FormatTraits<format>::isNormalized(comp))
{
vComp = _simd16_mul_ps(vComp, _simd16_set1_ps(FormatTraits<format>::fromFloat(comp)));
vComp = _simd16_castsi_ps(_simd16_cvtps_epi32(vComp));
}
vComp = FormatTraits<format>::pack(comp, vComp);
vClear.v[FormatTraits<format>::swizzle(comp)] = vComp;
}
uint32_t tileX, tileY;
MacroTileMgr::getTileIndices(macroTile, tileX, tileY);
// Init to full macrotile
SWR_RECT clearTile = {
KNOB_MACROTILE_X_DIM * int32_t(tileX),
KNOB_MACROTILE_Y_DIM * int32_t(tileY),
KNOB_MACROTILE_X_DIM * int32_t(tileX + 1),
KNOB_MACROTILE_Y_DIM * int32_t(tileY + 1),
};
// intersect with clear rect
clearTile &= rect;
// translate to local hottile origin
clearTile.Translate(-int32_t(tileX) * KNOB_MACROTILE_X_DIM,
-int32_t(tileY) * KNOB_MACROTILE_Y_DIM);
// Make maximums inclusive (needed for convert to raster tiles)
clearTile.xmax -= 1;
clearTile.ymax -= 1;
// convert to raster tiles
clearTile.ymin >>= (KNOB_TILE_Y_DIM_SHIFT);
clearTile.ymax >>= (KNOB_TILE_Y_DIM_SHIFT);
clearTile.xmin >>= (KNOB_TILE_X_DIM_SHIFT);
clearTile.xmax >>= (KNOB_TILE_X_DIM_SHIFT);
const int32_t numSamples = GetNumSamples(pDC->pState->state.rastState.sampleCount);
// compute steps between raster tile samples / raster tiles / macro tile rows
const uint32_t rasterTileSampleStep =
KNOB_TILE_X_DIM * KNOB_TILE_Y_DIM * FormatTraits<format>::bpp / 8;
const uint32_t rasterTileStep =
(KNOB_TILE_X_DIM * KNOB_TILE_Y_DIM * (FormatTraits<format>::bpp / 8)) * numSamples;
const uint32_t macroTileRowStep = (KNOB_MACROTILE_X_DIM / KNOB_TILE_X_DIM) * rasterTileStep;
const uint32_t pitch = (FormatTraits<format>::bpp * KNOB_MACROTILE_X_DIM / 8);
HOTTILE* pHotTile = pDC->pContext->pHotTileMgr->GetHotTile(pDC->pContext,
pDC,
hWorkerPrivateData,
macroTile,
rt,
true,
numSamples,
renderTargetArrayIndex);
uint32_t rasterTileStartOffset =
(ComputeTileOffset2D<TilingTraits<SWR_TILE_SWRZ, FormatTraits<format>::bpp>>(
pitch, clearTile.xmin, clearTile.ymin)) *
numSamples;
uint8_t* pRasterTileRow =
pHotTile->pBuffer +
rasterTileStartOffset; //(ComputeTileOffset2D< TilingTraits<SWR_TILE_SWRZ,
// FormatTraits<format>::bpp > >(pitch, x, y)) * numSamples;
// loop over all raster tiles in the current hot tile
for (int32_t y = clearTile.ymin; y <= clearTile.ymax; ++y)
{
uint8_t* pRasterTile = pRasterTileRow;
for (int32_t x = clearTile.xmin; x <= clearTile.xmax; ++x)
{
for (int32_t sampleNum = 0; sampleNum < numSamples; sampleNum++)
{
ClearRasterTile<format>(pRasterTile, vClear);
pRasterTile += rasterTileSampleStep;
}
}
pRasterTileRow += macroTileRowStep;
}
pHotTile->state = HOTTILE_DIRTY;
}
void ProcessClearBE(DRAW_CONTEXT* pDC, uint32_t workerId, uint32_t macroTile, void* pUserData)
{
SWR_CONTEXT* pContext = pDC->pContext;
HANDLE hWorkerPrivateData = pContext->threadPool.pThreadData[workerId].pWorkerPrivateData;
if (KNOB_FAST_CLEAR)
{
CLEAR_DESC* pClear = (CLEAR_DESC*)pUserData;
SWR_MULTISAMPLE_COUNT sampleCount = pDC->pState->state.rastState.sampleCount;
uint32_t numSamples = GetNumSamples(sampleCount);
SWR_ASSERT(pClear->attachmentMask != 0); // shouldn't be here without a reason.
RDTSC_BEGIN(BEClear, pDC->drawId);
if (pClear->attachmentMask & SWR_ATTACHMENT_MASK_COLOR)
{
unsigned long rt = 0;
uint32_t mask = pClear->attachmentMask & SWR_ATTACHMENT_MASK_COLOR;
while (_BitScanForward(&rt, mask))
{
mask &= ~(1 << rt);
HOTTILE* pHotTile =
pContext->pHotTileMgr->GetHotTile(pContext,
pDC,
hWorkerPrivateData,
macroTile,
(SWR_RENDERTARGET_ATTACHMENT)rt,
true,
numSamples,
pClear->renderTargetArrayIndex);
// All we want to do here is to mark the hot tile as being in a "needs clear" state.
pHotTile->clearData[0] = *(uint32_t*)&(pClear->clearRTColor[0]);
pHotTile->clearData[1] = *(uint32_t*)&(pClear->clearRTColor[1]);
pHotTile->clearData[2] = *(uint32_t*)&(pClear->clearRTColor[2]);
pHotTile->clearData[3] = *(uint32_t*)&(pClear->clearRTColor[3]);
pHotTile->state = HOTTILE_CLEAR;
}
}
if (pClear->attachmentMask & SWR_ATTACHMENT_DEPTH_BIT)
{
HOTTILE* pHotTile = pContext->pHotTileMgr->GetHotTile(pContext,
pDC,
hWorkerPrivateData,
macroTile,
SWR_ATTACHMENT_DEPTH,
true,
numSamples,
pClear->renderTargetArrayIndex);
pHotTile->clearData[0] = *(uint32_t*)&pClear->clearDepth;
pHotTile->state = HOTTILE_CLEAR;
}
if (pClear->attachmentMask & SWR_ATTACHMENT_STENCIL_BIT)
{
HOTTILE* pHotTile = pContext->pHotTileMgr->GetHotTile(pContext,
pDC,
hWorkerPrivateData,
macroTile,
SWR_ATTACHMENT_STENCIL,
true,
numSamples,
pClear->renderTargetArrayIndex);
pHotTile->clearData[0] = pClear->clearStencil;
pHotTile->state = HOTTILE_CLEAR;
}
RDTSC_END(BEClear, 1);
}
else
{
// Legacy clear
CLEAR_DESC* pClear = (CLEAR_DESC*)pUserData;
RDTSC_BEGIN(BEClear, pDC->drawId);
if (pClear->attachmentMask & SWR_ATTACHMENT_MASK_COLOR)
{
uint32_t clearData[4];
clearData[0] = *(uint32_t*)&(pClear->clearRTColor[0]);
clearData[1] = *(uint32_t*)&(pClear->clearRTColor[1]);
clearData[2] = *(uint32_t*)&(pClear->clearRTColor[2]);
clearData[3] = *(uint32_t*)&(pClear->clearRTColor[3]);
PFN_CLEAR_TILES pfnClearTiles = gClearTilesTable[KNOB_COLOR_HOT_TILE_FORMAT];
SWR_ASSERT(pfnClearTiles != nullptr);
unsigned long rt = 0;
uint32_t mask = pClear->attachmentMask & SWR_ATTACHMENT_MASK_COLOR;
while (_BitScanForward(&rt, mask))
{
mask &= ~(1 << rt);
pfnClearTiles(pDC,
hWorkerPrivateData,
(SWR_RENDERTARGET_ATTACHMENT)rt,
macroTile,
pClear->renderTargetArrayIndex,
clearData,
pClear->rect);
}
}
if (pClear->attachmentMask & SWR_ATTACHMENT_DEPTH_BIT)
{
uint32_t clearData[4];
clearData[0] = *(uint32_t*)&pClear->clearDepth;
PFN_CLEAR_TILES pfnClearTiles = gClearTilesTable[KNOB_DEPTH_HOT_TILE_FORMAT];
SWR_ASSERT(pfnClearTiles != nullptr);
pfnClearTiles(pDC,
hWorkerPrivateData,
SWR_ATTACHMENT_DEPTH,
macroTile,
pClear->renderTargetArrayIndex,
clearData,
pClear->rect);
}
if (pClear->attachmentMask & SWR_ATTACHMENT_STENCIL_BIT)
{
uint32_t clearData[4];
clearData[0] = pClear->clearStencil;
PFN_CLEAR_TILES pfnClearTiles = gClearTilesTable[KNOB_STENCIL_HOT_TILE_FORMAT];
pfnClearTiles(pDC,
hWorkerPrivateData,
SWR_ATTACHMENT_STENCIL,
macroTile,
pClear->renderTargetArrayIndex,
clearData,
pClear->rect);
}
RDTSC_END(BEClear, 1);
}
}
void InitClearTilesTable()
{
memset(gClearTilesTable, 0, sizeof(gClearTilesTable));
gClearTilesTable[R8G8B8A8_UNORM] = ClearMacroTile<R8G8B8A8_UNORM>;
gClearTilesTable[B8G8R8A8_UNORM] = ClearMacroTile<B8G8R8A8_UNORM>;
gClearTilesTable[R32_FLOAT] = ClearMacroTile<R32_FLOAT>;
gClearTilesTable[R32G32B32A32_FLOAT] = ClearMacroTile<R32G32B32A32_FLOAT>;
gClearTilesTable[R8_UINT] = ClearMacroTile<R8_UINT>;
}
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