GFX Demo Code

This little piece of code draws random sprites all over an 800x600 window using GFX. The GFX specific stuff has been commented, all the rest is standard Python/Pygame stuff.

  1 import random
  2 import pygame
  3 from gfx import gl, array, ext
  4 
  5 
  6 def main():
  7     pygame.init()
  8     flags =  pygame.OPENGL|pygame.DOUBLEBUF|pygame.HWSURFACE
  9     pygame.display.set_mode((800,600), flags)
 10 
 11     #setup the opengl window
 12     gl.init((1280,800))
 13 
 14     #create an image batch of 10000 images, which uses the texture 'sprite.png'
 15     image_count = 10000
 16     texture = ext.GLSurface(pygame.image.load('sprite.png'))
 17     image_batch = ext.ImageBatch(image_count, texture)
 18 
 19     #create 10000 random images, and use the whole texture for each image
 20     for i in xrange(image_count):
 21         x,y = random.randint(0,795), random.randint(0,595)
 22         w,h = 5,5
 23         vertices = (x,y),(x,y+h),(x+w,y+h),(x+w,y)
 24         texture_coords = (0,0),(0,1),(1,1),(1,0)
 25         image_batch.set_quad(i, vertices, texture_coords=texture_coords)
 26 
 27     clock = pygame.time.Clock()
 28     running = True
 29     while running:
 30         #clear the display
 31         gl.clear((0.0,0.0,0.0,1.0))
 32         #draw the image batch
 33         image_batch.draw()
 34         clock.tick()
 35         pygame.display.flip()
 36         if pygame.QUIT in (i.type for i in pygame.event.get()):
 37             running = False
 38     print 'FPS:', clock.get_fps()
 39 
 40 
 41 if __name__ == "__main__":
 42     main()
 43