// initParams(); //done by initGL
initCamera();
initShaders();
initBuffers();
initTextures();
textureManager = new TextureManagerR(client);
textureManager.start();
renderingContext = new RenderingContext(textureManager,
shaderProgram, projectionMatrixUniform,
textureUniform, uAmbientColorUniform,
uLightingDirectionUniform, uDirectionalColorUniform,