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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 Scatter.cpp
*
* @brief Shader support library implementation for scatter emulation
*
* Notes:
*
******************************************************************************/
#include <stdarg.h>
#include "common/os.h"
#include "common/simdlib.hpp"
extern "C" void ScatterPS_256(uint8_t* pBase, SIMD256::Integer vIndices, SIMD256::Float vSrc, uint8_t mask, uint32_t scale)
{
OSALIGN(float, 32) src[8];
OSALIGN(uint32_t, 32) indices[8];
SIMD256::store_ps(src, vSrc);
SIMD256::store_si((SIMD256::Integer*)indices, vIndices);
unsigned long index;
while (_BitScanForward(&index, mask))
{
mask &= ~(1 << index);
*(float*)(pBase + indices[index] * scale) = src[index];
}
}
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