Late init

src/Renderer.c

@@ -0,0 +1,155 @@
+#include "Renderer.h"
+
+GLFWwindow* initOpenGL() {
+	
+	glfwInit();
+	glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
+	glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
+	glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
+
+	GLFWwindow* window = glfwCreateWindow(800, 600, "Hello World", NULL, NULL);
+	if(window == NULL) {
+		printf("Failed to create a window\n");
+		glfwTerminate();
+		exit(-1);
+	}
+
+	glfwMakeContextCurrent(window);
+	glfwSetFramebufferSizeCallback(window, WindowGotResized);
+
+	if(!gladLoadGLLoader( (GLADloadproc) glfwGetProcAddress )) {
+		printf("Failed to initialize GLAD");
+		exit(-1);
+	}
+
+
+	// Set Global Texture Parameters
+	float borderColor[] = {1.0f, 1.0f, 0.0f, 1.0f};
+	glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_BORDER_COLOR, borderColor);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+
+	glEnable(GL_DEPTH_TEST);
+
+	return window;
+}
+
+void WindowGotResized(GLFWwindow* window, int width, int height) {
+
+	glViewport(0, 0, width, height);
+}
+
+unsigned int compileShaderProgram(const char** vertexSrc, const char** fragmentSrc) {
+	unsigned int vertexShader;
+	vertexShader = glCreateShader(GL_VERTEX_SHADER);
+	glShaderSource(vertexShader, 1, vertexSrc, NULL);
+	glCompileShader(vertexShader);
+
+	int vertexSuccess;
+	char infoLog[512];
+	glGetShaderiv(vertexShader, GL_COMPILE_STATUS, &vertexSuccess);
+	if(!vertexSuccess) {
+		glGetShaderInfoLog(vertexShader, 512, NULL, infoLog);		
+		printf("SHADER::VERTEX::COMPILATION_FAILED\n %s \n", infoLog);
+	}
+
+	unsigned int fragmentShader;
+	fragmentShader = glCreateShader(GL_FRAGMENT_SHADER);
+	glShaderSource(fragmentShader, 1, fragmentSrc, NULL);
+	glCompileShader(fragmentShader);
+
+	int fragmentSuccess;
+	glGetShaderiv(fragmentShader, GL_COMPILE_STATUS, &fragmentSuccess);
+	if(!fragmentSuccess){
+		glGetShaderInfoLog(fragmentShader, 512, NULL, infoLog);
+		printf("SHADER::FRAGMENT::COMPILATION_FAILED\n %s \n", infoLog);
+	}
+
+	unsigned int shaderProgram;
+	shaderProgram = glCreateProgram();
+	glAttachShader(shaderProgram, vertexShader);
+	glAttachShader(shaderProgram, fragmentShader);
+	
+	glLinkProgram(shaderProgram);
+
+	int programSuccess;
+	glGetProgramiv(shaderProgram, GL_LINK_STATUS, &programSuccess);
+	if(!programSuccess) {
+		glGetProgramInfoLog(shaderProgram, 512, NULL, infoLog);
+		printf("SHADER::PROGRAM::LINKING_FAILED\n %s \n", infoLog);
+	}
+	glDeleteShader(vertexShader);
+	glDeleteShader(fragmentShader);
+
+	return shaderProgram;
+
+}
+
+unsigned int createShader(char* vertexPath, char* fragmentPath) {
+	FILE* vertex_file = fopen(vertexPath, "r");
+	FILE* fragment_file = fopen(fragmentPath, "r");
+	if( vertex_file == NULL || fragment_file == NULL ) {
+		printf("Failed to load shaders.\n");
+		exit(1);
+	}
+
+	struct stat vertex_stat;
+	struct stat fragment_stat;
+	stat(vertexPath, &vertex_stat);
+	stat(fragmentPath, &fragment_stat);
+
+	int vertex_length = vertex_stat.st_size;
+	int fragment_length = fragment_stat.st_size;
+	
+	char* vertex_src = (char*)malloc(vertex_length+1);
+	char* fragment_src = (char*)malloc(fragment_length+1);
+	memset(vertex_src, 0, vertex_length+1);
+	memset(fragment_src, 0, fragment_length+1);
+
+	fread(vertex_src, sizeof(char), vertex_length, vertex_file );
+	fread(fragment_src, sizeof(char), fragment_length, fragment_file );
+	
+	vertex_src[vertex_length+1] = '\0';
+	fragment_src[fragment_length+1] = '\0';
+//	printf("%s", vertex_src);
+//	printf("%s", fragment_src);
+
+	const char* vertexSrc = vertex_src;
+	const char* fragmentSrc = fragment_src;
+	
+	unsigned int shaderProgram;
+	shaderProgram = compileShaderProgram(&vertexSrc, &fragmentSrc);
+	free(fragment_src);
+	free(vertex_src);
+
+	return shaderProgram;
+}
+
+unsigned int createTexture(char* path){
+	// Generate Texture
+	unsigned int texture;
+	glGenTextures(1, &texture);
+	glBindTexture(GL_TEXTURE_2D, texture);
+
+	// Set Texure Parameters
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_MIRRORED_REPEAT);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_MIRRORED_REPEAT);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+
+	// Load texture image
+	int width, height, channels;
+	unsigned char *data = stbi_load(path, &width, &height, &channels, 0);
+
+	if (data) {
+		glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, data);
+		glGenerateMipmap(GL_TEXTURE_2D);
+	} else {
+		printf("Failed to load texture %s", path);
+	}
+	stbi_image_free(data);
+
+	return texture;
+}
+
+