basic-gl/src/main.c

#include "renderer.h"

#include <stdio.h>
#include <assert.h>

#include <glad/glad.h>
#include <GLFW/glfw3.h>



#define WINDOW_WIDTH 1200
#define WINDOW_HEIGHT 800

#define MAX_VERTEX_BUFFER 512 * 1024
#define MAX_ELEMENT_BUFFER 128 * 1024


static void error_callback(int e, const char* d) { 
	fprintf(stderr, "ERROR: %d: %s\n", e, d); 
}

void resize_window_callback(GLFWwindow* window, int width, int height) {
	glViewport(0, 0, width, height);
}


void key_callback(GLFWwindow *window, int key, int scancode, int action, int mods)
{
	if(key == GLFW_KEY_ESCAPE && action == GLFW_RELEASE) {
		glfwSetWindowShouldClose(window, GLFW_TRUE);
	}
}

int main() {

	Renderer renderer = {0};
	RENDERER_ERROR err = renderer_init(&renderer, WINDOW_WIDTH, WINDOW_HEIGHT);
	if (err != RENDERER_ERROR_OK) {
		ERROR_AND_QUIT(err, "could not initialize glfw");
	}
	
	glfwSetErrorCallback(error_callback);
	glfwSetKeyCallback(renderer.window, key_callback);


	while (!glfwWindowShouldClose(renderer.window)) {
		glfwPollEvents();
		glfwGetWindowSize(renderer.window, &renderer.width, &renderer.height);
		glViewport(0, 0, renderer.width, renderer.height);
		glClear(GL_COLOR_BUFFER_BIT);
		glClearColor(0.8f, 0.8f, 0.8f, 1.0f);

		render_quad(&renderer,
			(vec2){	renderer.width * 0.5f, renderer.height * 0.5f	},
			(vec2){	50.0f, 50.0f },
			(vec4) { 0.4f, 1.0f, 0.8f, 1.0f });
			
		

		glfwSwapBuffers(renderer.window);

	}

	renderer_destroy(&renderer);

	return 0;
}