opencv/modules/ocl/src/blend.cpp

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#include "precomp.hpp"
#include "opencl_kernels.hpp"

using namespace cv;
using namespace cv::ocl;

void cv::ocl::blendLinear(const oclMat &img1, const oclMat &img2, const oclMat &weights1, const oclMat &weights2,
                          oclMat &result)
{
    cv::ocl::Context *ctx = img1.clCxt;
    CV_Assert(ctx == img2.clCxt && ctx == weights1.clCxt && ctx == weights2.clCxt);
    int channels = img1.oclchannels();
    int depth = img1.depth();
    int rows = img1.rows;
    int cols = img1.cols;
    int istep = img1.step1();
    int wstep = weights1.step1();
    size_t globalSize[] = {cols * channels / 4, rows, 1};
    size_t localSize[] = {256, 1, 1};

    std::vector< std::pair<size_t, const void *> > args;
    result.create(img1.size(), CV_MAKE_TYPE(depth,img1.channels()));
    if(globalSize[0] != 0)
    {
        args.push_back( std::make_pair( sizeof(cl_mem), (void *)&result.data ));
        args.push_back( std::make_pair( sizeof(cl_mem), (void *)&img1.data ));
        args.push_back( std::make_pair( sizeof(cl_mem), (void *)&img2.data ));
        args.push_back( std::make_pair( sizeof(cl_mem), (void *)&weights1.data ));
        args.push_back( std::make_pair( sizeof(cl_mem), (void *)&weights2.data ));
        args.push_back( std::make_pair( sizeof(cl_int), (void *)&rows ));
        args.push_back( std::make_pair( sizeof(cl_int), (void *)&cols ));
        args.push_back( std::make_pair( sizeof(cl_int), (void *)&istep ));
        args.push_back( std::make_pair( sizeof(cl_int), (void *)&wstep ));
        String kernelName = "BlendLinear";

        openCLExecuteKernel(ctx, &blend_linear, kernelName, globalSize, localSize, args, channels, depth);
    }
}