Method renderDebugInfos

testbed/src/SceneDemo.cpp:533–616

Render Debug Infos

// Render Debug Infos
void SceneDemo::renderDebugInfos(openglframework::Shader& shader, const openglframework::Matrix4& worldToCameraMatrix) {

    rp3d::DebugRenderer& debugRenderer = mPhysicsWorld->getDebugRenderer();

    // Render in wireframe mode
    glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);

    // Bind the shader
    shader.bind();

    // Set the normal matrix (inverse transpose of the 3x3 upper-left sub matrix of the
    // model-view matrix)
    const openglframework::Matrix4 localToCameraMatrix = worldToCameraMatrix;
    const openglframework::Matrix3 normalMatrix = localToCameraMatrix.getUpperLeft3x3Matrix().getInverse().getTranspose();
    shader.setMatrix3x3Uniform("normalMatrix", normalMatrix, false);

    // Set the model to camera matrix
    shader.setMatrix4x4Uniform("localToWorldMatrix", openglframework::Matrix4::identity());
    shader.setMatrix4x4Uniform("worldToCameraMatrix", worldToCameraMatrix);

    shader.setIntUniform("isGlobalVertexColorEnabled", 0, false);

    // Get the location of shader attribute variables
    GLint vertexPositionLoc = shader.getAttribLocation("vertexPosition");
    GLint vertexColorLoc = shader.getAttribLocation("vertexColor");

    // Lines
    if (debugRenderer.getNbLines() > 0) {

        // Bind the VAO
        mDebugLinesVAO.bind();

        mDebugVBOLinesVertices.bind();

        glEnableVertexAttribArray(vertexPositionLoc);
        glVertexAttribPointer(vertexPositionLoc, 3, GL_FLOAT, GL_FALSE, sizeof(rp3d::Vector3) + sizeof(rp3d::uint32), (char*)nullptr);

        glEnableVertexAttribArray(vertexColorLoc);
        glVertexAttribIPointer(vertexColorLoc, 3, GL_UNSIGNED_INT, sizeof(rp3d::Vector3) + sizeof(rp3d::uint32), (void*)sizeof(rp3d::Vector3));

        // Draw the lines geometry
        glDrawArrays(GL_LINES, 0, debugRenderer.getNbLines() * 2);

        glDisableVertexAttribArray(vertexPositionLoc);
        glDisableVertexAttribArray(vertexColorLoc);

        mDebugVBOLinesVertices.unbind();

        // Unbind the VAO
        mDebugLinesVAO.unbind();
    }

    // Triangles
    if (debugRenderer.getNbTriangles() > 0) {

        // Bind the VAO
        mDebugTrianglesVAO.bind();