Pyglet is a fabulous opengl/windowing wrapper you can use to write applications in python. Gletools exposes advanced OpenGL functionality like GLSL, Framebuffers, Float textures etc. to programs using the opengl API of pyglet.

This is an unofficial github mirror of the original by Florian Boesch, documented here.

Features

• Framebuffer Objects
• Luminosity and Float Textures
• GLSL Shader Abstraction
• Managing OpenGL state via context managers
• Matrix Mode contexts
• Projection and Viewport contexts
• Framebuffer, Texture and Shader contexts

Install

gletools is a python package installable by any of the following bash commands:

cd gletools; python setup.py install
easy_install gletools

Example

See the examples folder in the source distribution.

import pyglet
from gletools import (
    Projection, Framebuffer, Texture,
    interval, quad, Group, Matrix,
)
from gletools.gl import *

window = pyglet.window.Window()
projection = Projection(0, 0, window.width, window.height)
fbo = Framebuffer(
    Texture(window.width, window.height,
        data = [100,100,100,255]*(window.width*window.height)
    )
)

@window.event
def on_mouse_drag(x, y, rx, ry, button, modifier):
    if pyglet.window.mouse.LEFT == button:
        glColor4f(1,1,1,1)
        glLineWidth(3)
        with fbo:
            glBegin(GL_LINES)
            glVertex3f(x, y, 0)
            glVertex3f(x-rx, y-ry, 0)
            glEnd()

rotation = 0.0
@interval(0.03)
def simulate(delta):
    global rotation
    rotation += 40.0 * delta

@window.event
def on_draw():
    window.clear()
    with Group(fbo.textures[0], projection, Matrix):
        glTranslatef(0, 0, -3)
        glRotatef(-45, 1, 0, 0)
        glRotatef(rotation, 0.0, 0.0, 1.0)
        quad(scale=2)

if __name__ == '__main__':
    glEnable(GL_LINE_SMOOTH)
    pyglet.app.run()

License

GNU AGPLv3 or later, Copyright 2008 Florian Bösch