void SeededRegionGrowing::recompileOpenCLCode(Image::pointer input) {
    // Check if there is a need to recompile OpenCL code
    if(input->getDimensions() == mDimensionCLCodeCompiledFor &&
            input->getDataType() == mTypeCLCodeCompiledFor)
        return;

    OpenCLDevice::pointer device = getMainDevice();
    std::string buildOptions = "";
    if(input->getDataType() == TYPE_FLOAT) {
        buildOptions = "-DTYPE_FLOAT";
    } else if(input->getDataType() == TYPE_INT8 || input->getDataType() == TYPE_INT16) {
        buildOptions = "-DTYPE_INT";
    } else {
        buildOptions = "-DTYPE_UINT";
    }
    std::string filename;
    if(input->getDimensions() == 2) {
        filename = "Algorithms/SeededRegionGrowing/SeededRegionGrowing2D.cl";
    } else {
        filename = "Algorithms/SeededRegionGrowing/SeededRegionGrowing3D.cl";
    }
    int programNr = device->createProgramFromSource(std::string(FAST_SOURCE_DIR) + filename, buildOptions);
    mKernel = cl::Kernel(device->getProgram(programNr), "seededRegionGrowing");
    mDimensionCLCodeCompiledFor = input->getDimensions();
    mTypeCLCodeCompiledFor = input->getDataType();
}
Beispiel #2
0
void DoubleFilter::execute() {
    if(!mInput.isValid()) {
        throw Exception("No input supplied to GaussianSmoothingFilter");
    }

    Image::pointer input = mInput;
    Image::pointer output = mOutput;

    // Initialize output image
    output->createFromImage(input, mDevice);

    if(mDevice->isHost()) {
        // Execution device is Host, use the executeAlgorithmOnHost function with the given data type
        switch(input->getDataType()) {
            // This macro creates a case statement for each data type and sets FAST_TYPE to the correct C++ data type
            fastSwitchTypeMacro(executeAlgorithmOnHost<FAST_TYPE>(input, output));
        }
    } else {
        // Execution device is an OpenCL device
        OpenCLDevice::pointer device = boost::static_pointer_cast<OpenCLDevice>(mDevice);

        // Set build options based on the data type of the data
        std::string buildOptions = "";
        switch(input->getDataType()) {
        case TYPE_FLOAT:
            buildOptions = "-DTYPE=float";
            break;
        case TYPE_INT8:
            buildOptions = "-DTYPE=char";
            break;
        case TYPE_UINT8:
            buildOptions = "-DTYPE=uchar";
            break;
        case TYPE_INT16:
            buildOptions = "-DTYPE=short";
            break;
        case TYPE_UINT16:
            buildOptions = "-DTYPE=ushort";
            break;
        }

        // Compile the code
        int programNr = device->createProgramFromSource(std::string(FAST_SOURCE_DIR) + "Tests/Algorithms/DoubleFilter.cl", buildOptions);
        cl::Kernel kernel = cl::Kernel(device->getProgram(programNr), "doubleFilter");

        // Get global size for the kernel
        cl::NDRange globalSize(input->getWidth()*input->getHeight()*input->getDepth()*input->getNrOfComponents());

        // Set the arguments for the kernel
        OpenCLBufferAccess inputAccess = input->getOpenCLBufferAccess(ACCESS_READ, device);
        OpenCLBufferAccess outputAccess = output->getOpenCLBufferAccess(ACCESS_READ_WRITE, device);
        kernel.setArg(0, *inputAccess.get());
        kernel.setArg(1, *outputAccess.get());

        // Execute the kernel
        device->getCommandQueue().enqueueNDRangeKernel(
                kernel,
                cl::NullRange,
                globalSize,
                cl::NullRange
        );
    }

    // Update timestamp of the output data
    output->updateModifiedTimestamp();
}