Function initialize

source/examples/transformfeedback/main.cpp:52–121

}

void initialize()
{
    g_shaderProgram = new globjects::Program();
    g_shaderProgram->ref();
    
    const auto dataPath = common::retrieveDataPath("globjects", "dataPath");
    g_shaderProgram->attach(
        globjects::Shader::fromFile(GL_VERTEX_SHADER,   dataPath + "transformfeedback/simple.vert")
      , globjects::Shader::fromFile(GL_FRAGMENT_SHADER, dataPath + "transformfeedback/simple.frag"));

    g_transformFeedbackProgram = new globjects::Program();
    g_transformFeedbackProgram->ref();
    g_transformFeedbackProgram->attach(
        globjects::Shader::fromFile(GL_VERTEX_SHADER, dataPath + "transformfeedback/transformfeedback.vert"));

    g_transformFeedbackProgram->setUniform("deltaT", 0.0f);

    g_shaderProgram->setUniform("modelView", glm::mat4());
    g_shaderProgram->setUniform("projection", glm::ortho(-0.4f, 1.4f, -0.4f, 1.4f, 0.f, 1.f));


    // Create and setup geometry
    auto vertexArray = std::vector<glm::vec4>({
        { 0, 0, 0, 1 }
      , { 1, 0, 0, 1 }
      , { 0, 1, 0, 1 }
      , { 1, 0, 0, 1 }
      , { 0, 1, 0, 1 }
      , { 1, 1, 0, 1 } });

    auto colorArray = std::vector<glm::vec4>({
        { 1, 0, 0, 1 }
      , { 1, 1, 0, 1 }
      , { 0, 0, 1, 1 }
      , { 1, 1, 0, 1 }
      , { 0, 0, 1, 1 }
      , { 0, 1, 0, 1 } });

    g_vertexBuffer1 = new globjects::Buffer();
    g_vertexBuffer1->ref();
    g_vertexBuffer1->setData(vertexArray, GL_STATIC_DRAW);
    g_vertexBuffer2 = new globjects::Buffer();
    g_vertexBuffer2->ref();
    g_vertexBuffer2->setData(vertexArray, GL_STATIC_DRAW);
    g_colorBuffer = new globjects::Buffer();
    g_colorBuffer->ref();
    g_colorBuffer->setData(colorArray, GL_STATIC_DRAW);

    g_vao = new globjects::VertexArray();
    g_vao->ref();

    g_vao->binding(0)->setAttribute(0);
    g_vao->binding(0)->setFormat(4, GL_FLOAT);

    g_vao->binding(1)->setAttribute(1);
    g_vao->binding(1)->setBuffer(g_colorBuffer, 0, sizeof(glm::vec4));
    g_vao->binding(1)->setFormat(4, GL_FLOAT);