Pygame Shaders

Easily integrate shaders into your new or existing pygame projects

import pygame
import pygame_shaders
pygame.init()
clock = pygame.time.Clock()
#Create an opengl pygame Surface, this will act as our opengl context. 
screen = pygame.display.set_mode((600, 600), pygame.OPENGL | pygame.DOUBLEBUF)
#This is our main display we will do all of our standard pygame rendering on.
display = pygame.Surface((600, 600))
#The shader we are using to communicate with the opengl context (standard pygame drawing functionality does not work on opengl displays)
screen_shader = pygame_shaders.DefaultScreenShader(display) # <- Here we supply our default display, it's this display which will be displayed onto the opengl context via the screen_shader
#This is our shader object which we can use to render the given shaders onto the screen in various ways. 
shader = pygame_shaders.Shader(pygame_shaders.DEFAULT_VERTEX_SHADER, "fragment.glsl", screen) #<- Because we plan on using this shader for direct rendering (we supply the surface on which we plan to do said direct rendering in this case, screen) 
while True:
 #Fill the display with white
 display.fill((255, 255, 255))
 
 #Standard pygame event stuff
 for event in pygame.event.get():
 if event.type == pygame.QUIT:
 pygame.quit()
 #Render a rect onto the display using the standard pygame method for drawing rects.
 pygame.draw.rect(display, (255, 0, 0), (200, 200, 20, 20))
 
 #Render the contents of "display" (main surface) onto the opengl screen.
 screen_shader.render() 
 #Render the shader directly onto the display.
 shader.render_direct(pygame.Rect(0, 0, 100, 100)) 
 #Update the opengl context
 pygame.display.flip()
 clock.tick(60)

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