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A Python port of the initialization code from a gamedev.net post
# Ported from: http://www.gamedev.net/topic/318673-fbo-question/
#
# Revised to remove the references to cocos2d
import pyglet
from pyglet.gl import *
from ctypes import c_ulong
def init():
# Ported from: http://www.gamedev.net/topic/318673-fbo-question/
numBuffers = 1
lp_color_tex = c_ulong()
glGenTextures(numBuffers, lp_color_tex);
color_tex = lp_color_tex
# initialize textures
glBindTexture(GL_TEXTURE_2D,color_tex);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST);
glTexImage2D(GL_TEXTURE_2D,0,GL_RGBA,512,512,0,GL_RGBA,GL_INT,0);
lp_depth_rb = c_ulong()
glGenRenderbuffersEXT(1, lp_depth_rb);
depth_rb = lp_depth_rb.value
# initialize depth render buffer
glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, depth_rb);
glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT24, 512, 512);
lp_fb = c_ulong()
glGenFramebuffersEXT(numBuffers, lp_fb);
fb = lp_fb.value
# initialize frame buffers
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb);
glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT,GL_COLOR_ATTACHMENT0_EXT,GL_TEXTURE_2D,color_tex, 0);
glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, depth_rb);
if __name__ == '__main__':
init()
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