Merge branch 'campvis-nx' of gitlab.lrz.de:weiss/campvis-nx into campvis-nx

                // converting from GL representation

                GenericImageRepresentationLocal<BASETYPE, NUMCHANNELS>* toReturn = nullptr;

                GLJobProc.enqueueJobBlocking([&]() {

                    if (cgt::Texture::calcMatchingDataType(tester->getTexture()->getInternalFormat()) != TypeTraits<BASETYPE, NUMCHANNELS>::glDataType)

                    if (cgt::Texture::calcMatchingPixelDataType(tester->getTexture()->getInternalFormat()) != TypeTraits<BASETYPE, NUMCHANNELS>::glDataType)

                        LDEBUGC("CAMPVis.core.datastructures.GenericLocalConversion", "Performing conversion between data types, you may lose information or the resulting data may show other unexpected features.");

                    WeaklyTypedPointer wtp = tester->getWeaklyTypedPointerConvert(TypeTraits<BASETYPE, NUMCHANNELS>::glDataType);

    }

    const WeaklyTypedPointer ImageRepresentationGL::getWeaklyTypedPointerCopy() const {

        GLint format = cgt::Texture::calcMatchingFormat(_texture->getInternalFormat());

        GLenum dataType = cgt::Texture::calcMatchingDataType(_texture->getInternalFormat());

        GLint format = cgt::Texture::calcMatchingPixelFormat(_texture->getInternalFormat());

        GLenum dataType = cgt::Texture::calcMatchingPixelDataType(_texture->getInternalFormat());

        GLubyte* data = _texture->downloadTextureToBuffer(format, dataType);

        return WeaklyTypedPointer(WeaklyTypedPointer::baseType(dataType), _texture->getNumChannels(), data);

    }

    const WeaklyTypedPointer ImageRepresentationGL::getWeaklyTypedPointerConvert(GLenum dataType) const {

        GLint format = cgt::Texture::calcMatchingFormat(_texture->getInternalFormat());

        GLint format = cgt::Texture::calcMatchingPixelFormat(_texture->getInternalFormat());

        GLubyte* data = _texture->downloadTextureToBuffer(format, dataType);

        return WeaklyTypedPointer(WeaklyTypedPointer::baseType(dataType), _texture->getNumChannels(), data);

// ================================================================================================

// 

// This file is part of the CAMPVis Software Framework.

// 

// If not explicitly stated otherwise: Copyright (C) 2012-2015, all rights reserved,

//      Christian Schulte zu Berge <christian.szb@in.tum.de>

//      Chair for Computer Aided Medical Procedures

//      Technische Universitaet Muenchen

//      Boltzmannstr. 3, 85748 Garching b. Muenchen, Germany

// 

// For a full list of authors and contributors, please refer to the file "AUTHORS.txt".

// 

// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file 

// except in compliance with the License. You may obtain a copy of the License at

// 

// http://www.apache.org/licenses/LICENSE-2.0

// 

// Unless required by applicable law or agreed to in writing, software distributed under the 

// License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 

// either express or implied. See the License for the specific language governing permissions 

// and limitations under the License.

// 

// ================================================================================================

// (c) 2016 Jakob Weiss <jakob.weiss@tum.de>

#include "cshelper.h"

#include <sstream>

#include <cgt/texture.h> 

#include <cgt/imageunit.h>

#include <cgt/gltextureformattraits.h>

namespace campvis {

    namespace CSHelper {

        //const std::string loggerCat_ = "CAMPVis.core.tools.CSHelper";

        CAMPVIS_CORE_API std::string generateGLSLImageDefinition(const cgt::Texture & tex, const std::string& uniformName, const cgt::ImageUnit& imgUnit)

        {

            std::stringstream ss;

            auto fmtTraits = cgt::GLTextureFormatTraits::get(tex.getInternalFormat());

            ss << "layout(" << fmtTraits.glslFormatQualifier() << ", binding = " << imgUnit.getUnitNumber() << ") uniform "; // "layout( (r8|r16|rgba16|...) uniform"

            ss << (fmtTraits.isIntegerFormat() ? (fmtTraits.isSignedFormat() ? "iimage" : "uimage") : "image"); // "(i|u|_)image"

            ss << ( (tex.getType() == GL_TEXTURE_1D) ? 1 : ( (tex.getType() == GL_TEXTURE_2D) ? 2 : 3) ) << "D "; // "(1|2|3)D"

            ss << uniformName << ";" << std::endl;

            return ss.str();

        }

    }

}

 No newline at end of file

// ================================================================================================

// 

// This file is part of the CAMPVis Software Framework.

// 

// If not explicitly stated otherwise: Copyright (C) 2012-2015, all rights reserved,

//      Christian Schulte zu Berge <christian.szb@in.tum.de>

//      Chair for Computer Aided Medical Procedures

//      Technische Universitaet Muenchen

//      Boltzmannstr. 3, 85748 Garching b. Muenchen, Germany

// 

// For a full list of authors and contributors, please refer to the file "AUTHORS.txt".

// 

// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file 

// except in compliance with the License. You may obtain a copy of the License at

// 

// http://www.apache.org/licenses/LICENSE-2.0

// 

// Unless required by applicable law or agreed to in writing, software distributed under the 

// License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 

// either express or implied. See the License for the specific language governing permissions 

// and limitations under the License.

// 

// ================================================================================================

// (c) 2016 Jakob Weiss <jakob.weiss@tum.de>

#ifndef CSHELPER_H__

#define CSHELPER_H__

#include <string>

#include "core/coreapi.h"

namespace cgt {

    class Texture;

    class ImageUnit;

}

namespace campvis {

    /**

     * CSHelper namespace

     * Collection of various helper classes and functions to simplify using Compute Shaders for various applications

     */

    namespace CSHelper {

        /// Loggin category for the LDEBUG macros

        //const std::string loggerCat_;

        /**

         *	Generates a glsl image definition that matches the texture type and layout

         */

        CAMPVIS_CORE_API std::string generateGLSLImageDefinition(const cgt::Texture& tex, const std::string& uniformName, const cgt::ImageUnit& imgUnit);

    }

}

#endif // CSHELPER_H__

        }

        // read back stuff

        GLenum readBackFormat = cgt::Texture::calcMatchingFormat(outputTex->getInternalFormat());

        GLenum readBackFormat = cgt::Texture::calcMatchingPixelFormat(outputTex->getInternalFormat());

        size_t channels = outputTex->getNumChannels();

        toReturn.resize(channels);

        glReadBuffer(GL_COLOR_ATTACHMENT0);