void initialize() {
glViewport(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
GLuint vao;
glGenVertexArrays(1, &vao);
glBindVertexArray(vao);
GLuint vbo;
glGenBuffers(1, &vbo);
glBindBuffer(GL_ARRAY_BUFFER, vbo);
std::string vertexShaderSource;
if (!contentsOfFile("vertex.glsl", vertexShaderSource)) {
exit(1);
}
std::string fragmentShaderSource;
if (!contentsOfFile("fragment.glsl", fragmentShaderSource)) {
exit(1);
}
Shader vertexShader(GL_VERTEX_SHADER);
if (!vertexShader.compile(vertexShaderSource)) {
debugPrint("Failed to compile vertex shader: %s", vertexShader.getCompileStatus().c_str());
exit(1);
}
Shader fragmentShader(GL_FRAGMENT_SHADER);
if (!fragmentShader.compile(fragmentShaderSource)) {
debugPrint("Failed to compile fragment shader: %s", fragmentShader.getCompileStatus().c_str());
exit(1);
}
Program shaderProgram(vertexShader, fragmentShader);
if (!shaderProgram.link()) {
debugPrint("Failed to link shader program: %s", shaderProgram.getLinkStatus().c_str());
exit(1);
}
GLuint programID = shaderProgram.getGLID();
glUseProgram(programID);
GLint posAttrib = glGetAttribLocation(programID, "position");
glVertexAttribPointer(posAttrib, 2, GL_FLOAT, GL_FALSE, 5 * sizeof(float), 0);
GLint colorAttrib = glGetAttribLocation(programID, "color");
glEnableVertexAttribArray(colorAttrib);
glVertexAttribPointer(colorAttrib, 3, GL_FLOAT, GL_FALSE, 5 * sizeof(float), (void*)(2 * sizeof(float)));
glEnableVertexAttribArray(posAttrib);
ball.setLeftPlayer(&leftPlayer);
ball.setRightPlayer(&rightPlayer);
}
GLuint Shaders::loadShadersFromFile(const std::string& vertexFilePath, const std::string& fragmentFilePath)
{
try {
return loadShaderFromString(contentsOfFile(vertexFilePath),
contentsOfFile(fragmentFilePath));
} catch (std::exception& e) {
std::cout << e.what() << std::endl;
}
return 0;
}
