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#include <GL/glew.h>
#include <GLFW/glfw3.h>
#include "fb.h"
#include "die.h"
#include "consts.h"
GLuint init_fb() {
GLuint fbo;
glGenFramebuffers(1, &fbo);
// configure newly created framebuffer
glBindFramebuffer(GL_FRAMEBUFFER, fbo);
GLuint buffer;
glGenTextures(1, &buffer);
glBindTexture(GL_TEXTURE_2D, buffer);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, RES_H, RES_V, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, buffer, 0);
if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
die("can't initialize framebuffer??\n");
// use default framebuffer again
glBindFramebuffer(GL_FRAMEBUFFER, 0);
return fbo;
}
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