Source Code for Module toon.convolution

 1  #!/usr/bin/env python 
 2  """ 
 3  Convolution shader using Python 
 4   
 5  """ 
 6  from rats.serialize import Serializable 
 7  from rats.glsl import ShaderProgram 
 8  from rats.glsl import ShaderError 
 9   
10 -class ShaderEffect(Serializable): 
11      """ 
12      Generic GLSL Shader Effect 
13      """ 
14      name = "default_" # prefix for variables names 
15 -    def __init__(self, **variables): 
16          self.variables = {} # uniform config values 
17          self.variables.update(config) 
18          self.vert = "" # vertex shader text 
19          self.frag = "" # fragment shader text 
20          self.texture0_id = 0 # texture unit number (most likely 0) 
21          self.program = None # glsl compiled program 
22          self.enabled = True 
23   
24 -    def set_uniforms(self): 
25          """Define all uniforms variables here. 
26          """ 
27          pass 
28   
29 -    def program_init(self): 
30          """At application startup. 
31          """ 
32          try: 
33              self.program = ShaderProgram() 
34              self.program.add_shader_text(GL_VERTEX_SHADER_ARB, self.vert) 
35              self.program.add_shader_text(GL_FRAGMENT_SHADER_ARB, self.frag) 
36              self.program.linkShaders() 
37          except Exception, e:  
38              print e.message 
39   
40 -    def program_use_begin(self): 
41          """Before rendering a frame. 
42          """ 
43          if self.enabled: 
44              try: 
45                  self.program.enable() 
46              except Exception, e:  
47                  print e.message 
48   
49 -    def program_use_end(self): 
50          """After rendering a frame. 
51          """ 
52          try: 
53              self.program.disable() 
54          except Exception, e:  
55              print e.message 
56