128 lines
4.1 KiB
C++
128 lines
4.1 KiB
C++
/*M///////////////////////////////////////////////////////////////////////////////////////
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//
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// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
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//
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// By downloading, copying, installing or using the software you agree to this license.
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// If you do not agree to this license, do not download, install,
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// copy or use the software.
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//
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//
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// License Agreement
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// For Open Source Computer Vision Library
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//
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// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
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// Copyright (C) 2009, Willow Garage Inc., all rights reserved.
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// Copyright (C) 2013, OpenCV Foundation, all rights reserved.
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// Third party copyrights are property of their respective owners.
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//
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// Redistribution and use in source and binary forms, with or without modification,
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// are permitted provided that the following conditions are met:
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//
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// * Redistribution's of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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//
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// * Redistribution's in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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//
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// * The name of the copyright holders may not be used to endorse or promote products
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// derived from this software without specific prior written permission.
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//
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// This software is provided by the copyright holders and contributors "as is" and
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// any express or implied warranties, including, but not limited to, the implied
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// warranties of merchantability and fitness for a particular purpose are disclaimed.
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// In no event shall the Intel Corporation or contributors be liable for any direct,
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// indirect, incidental, special, exemplary, or consequential damages
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// (including, but not limited to, procurement of substitute goods or services;
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// loss of use, data, or profits; or business interruption) however caused
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// and on any theory of liability, whether in contract, strict liability,
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// or tort (including negligence or otherwise) arising in any way out of
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// the use of this software, even if advised of the possibility of such damage.
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//
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//M*/
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#pragma once
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#ifndef OPENCV_CUDEV_WARP_WARP_HPP
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#define OPENCV_CUDEV_WARP_WARP_HPP
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#include "../common.hpp"
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namespace cv { namespace cudev {
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//! @addtogroup cudev
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//! @{
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enum
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{
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LOG_WARP_SIZE = 5,
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WARP_SIZE = 1 << LOG_WARP_SIZE
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};
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struct Warp
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{
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__device__ __forceinline__ static uint laneId()
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{
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uint ret;
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asm("mov.u32 %0, %%laneid;" : "=r"(ret));
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return ret;
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}
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__device__ __forceinline__ static uint warpId()
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{
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const uint tid = (threadIdx.z * blockDim.y + threadIdx.y) * blockDim.x + threadIdx.x;
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return tid / WARP_SIZE;
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}
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};
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template <class It, typename T>
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__device__ __forceinline__ void warpFill(It beg, It end, const T& value)
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{
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for(It t = beg + Warp::laneId(); t < end; t += WARP_SIZE)
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*t = value;
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}
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template <class InIt, class OutIt>
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__device__ __forceinline__ OutIt warpCopy(InIt beg, InIt end, OutIt out)
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{
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for(InIt t = beg + Warp::laneId(); t < end; t += WARP_SIZE, out += WARP_SIZE)
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*out = *t;
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return out;
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}
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template <class InIt, class OutIt, class UnOp>
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__device__ __forceinline__ OutIt warpTransform(InIt beg, InIt end, OutIt out, const UnOp& op)
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{
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for(InIt t = beg + Warp::laneId(); t < end; t += WARP_SIZE, out += WARP_SIZE)
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*out = op(*t);
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return out;
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}
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template <class InIt1, class InIt2, class OutIt, class BinOp>
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__device__ __forceinline__ OutIt warpTransform(InIt1 beg1, InIt1 end1, InIt2 beg2, OutIt out, const BinOp& op)
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{
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uint lane = Warp::laneId();
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InIt1 t1 = beg1 + lane;
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InIt2 t2 = beg2 + lane;
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for(; t1 < end1; t1 += WARP_SIZE, t2 += WARP_SIZE, out += WARP_SIZE)
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*out = op(*t1, *t2);
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return out;
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}
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template<typename OutIt, typename T>
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__device__ __forceinline__ void warpYota(OutIt beg, OutIt end, T value)
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{
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uint lane = Warp::laneId();
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value += lane;
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for(OutIt t = beg + lane; t < end; t += WARP_SIZE, value += WARP_SIZE)
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*t = value;
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}
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//! @}
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}}
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#endif
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