Method createShader_

source/MRViewer/MRGLStaticHolder.cpp:108–638

}

void GLStaticHolder::createShader_( ShaderType type )
{
    std::string vertexShader;
    std::string fragmentShader;
    if ( type == Volume || type == VolumePicker )
    {
        vertexShader = getTrivialVertexShader();
        if ( type == Volume )
            fragmentShader = getVolumeFragmentShader();
        else
            fragmentShader = getVolumePickerFragmentShader();
    }
    else if ( type == Mesh || type == AlphaSortMesh || type == DepthPeelMesh )
    {
        vertexShader = getMeshVerticesShader();

        int major, minor;
        auto window = glfwGetCurrentContext();
        major = glfwGetWindowAttrib( window, GLFW_CONTEXT_VERSION_MAJOR );
        minor = glfwGetWindowAttrib( window, GLFW_CONTEXT_VERSION_MINOR );

        bool gl4 = major >= 4 && ( major != 4 || minor >= 3 );
        ShaderTransparencyMode tMode = ShaderTransparencyMode::None;
        if ( type == AlphaSortMesh )
            tMode = ShaderTransparencyMode::AlphaSort;
        else if ( type == DepthPeelMesh )
            tMode = ShaderTransparencyMode::DepthPeel;
        
        int curSamples = 0;
        GL_EXEC( glGetIntegerv( GL_SAMPLES, &curSamples ) );
        
        fragmentShader = getMeshFragmentShader( gl4, tMode, curSamples > 1 && tMode != ShaderTransparencyMode::AlphaSort );
    }
    else if ( type == Lines || type == LinesJoint || type == AlphaSortLines || type == DepthPeelLines )
    {
        if ( type == Lines || type == AlphaSortLines || type == DepthPeelLines )
        {
            ShaderTransparencyMode tMode = ShaderTransparencyMode::None;
            if ( type == AlphaSortLines )
                tMode = ShaderTransparencyMode::AlphaSort;
            else if ( type == DepthPeelLines )
                tMode = ShaderTransparencyMode::DepthPeel;

            vertexShader = getLinesVertexShader();
            fragmentShader = getLinesFragmentShader( tMode );
        }
        else
        {
            vertexShader = getLinesJointVertexShader();
            fragmentShader = getLinesJointFragmentShader();
        }
    }
    else if ( type == LinesPicker || type == LinesJointPicker )
    {
        if ( type == LinesPicker )
            vertexShader = getLinesPickerVertexShader();
        else
            vertexShader = getLinesJointPickerVertexShader();