private ProgramData loadProgram(String vertexShaderFilename, String fragmentShaderFilename) {
ArrayList<Integer> shaderList = new ArrayList<>();
shaderList.add(Framework.loadShader(GL_VERTEX_SHADER, vertexShaderFilename));
shaderList.add(Framework.loadShader(GL_FRAGMENT_SHADER, fragmentShaderFilename));
ProgramData data = new ProgramData();
data.theProgram = Framework.createProgram(shaderList);
data.cameraToClipMatrixUnif = glGetUniformLocation(data.theProgram, "cameraToClipMatrix");
return data;
}
