Changeset bfad34229eccba8d964a27a0fb3a2084c612a7b9 for palette/trunk/palette/gl/offscreen.py

Timestamp:

09/24/08 06:28:06 (4 years ago)

Author:

flupke <flupke@…>

Children:

1b0cdd33d70957213349cfa0cae373c7350c73a5

Parents:

206d95c9b3331ad20b32a8ff1c5e9666a2029a28

git-committer:

flupke <flupke@…> (09/24/08 06:28:06)

Message:

palette:

• corrigé l'init de GLUT pour que la fenêtre soit créée avec la taille spécifiée dans le plugin
• les classes pour utilisers les FBO fonctionnent
• fait un test d'encodage d'animation en moiré

git-svn-id:  http://kawa.selfip.org/svn/projects@503 532e76a9-45ae-c241-9c6d-8309ac6440cd

File:

• palette/trunk/palette/gl/offscreen.py (modified) (1 diff)

palette/trunk/palette/gl/offscreen.py

@@ -1 +1 @@
 """Wrapper objects to work with offscreen rendering"""
 
-from OpenGL.EXT.framebuffer_object import *
-
+from OpenGL.GL.EXT.framebuffer_object import *
+from OpenGL.GL import *
+from texture import Texture2D
 
 class FrameBuffer(object):
     def __init__(self, size):
+        self.size = size
         # Initialise extension
         if not glInitFramebufferObjectEXT():
-            raise Exception("Framebuffer object extension is not supporte")
+            raise Exception("Framebuffer object extension is not supported")
         # Create the framebuffer
-        self.framebuffer_id = glGenFramebuffersEXT(1)
-        self.render_buffer_id = glGenRenderbuffersEXT(1)
-        glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, self.render_buffer_id)
-        glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT24,
-            size[0], size[1])
+        self.framebuffer_id = glGenFramebuffersEXT(1)
+
+    def bind(self):
+        glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, self.framebuffer_id)
+        glPushAttrib(GL_VIEWPORT_BIT)
+        glViewport(0, 0, *self.size)
+
+    def unbind(self):
+        glPopAttrib()
+        glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0)
+ 
+    def __del__(self):
+        glDeleteFramebuffersEXT(1, [self.framebuffer_id])
+
+
+class RenderBuffer(FrameBuffer, Texture2D):
+    def __init__(self, size):
+        FrameBuffer.__init__(self, size)
+        self.bind()
+        # Create the colour (texture) buffer
+        Texture2D.__init__(self, size)
+        glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
+                GL_TEXTURE_2D, self.texture_id, 0)
+        # Create the depth buffer
+        self.depth_buffer_id = glGenRenderbuffersEXT(1)
+        glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, self.depth_buffer_id)
+        glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT,
+            *size)
+        glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, 
+                GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT,
+                self.depth_buffer_id)
+        # Check framebuffer completeness
+        glDrawBuffer(GL_COLOR_ATTACHMENT0_EXT)
+        status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT)
+        if status != GL_FRAMEBUFFER_COMPLETE_EXT:
+            raise Exception("Error in framebuffer activation %s" % hex(status))
+        # Unbind buffer
+        self.unbind()
+
+    def bind(self):
+        FrameBuffer.bind(self)
+
+    def unbind(self):
+        FrameBuffer.unbind(self)
+        glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0)
+
+    def bind_texture(self):
+        Texture2D.bind(self)
 
     def __del__(self):
-        super(FrameBuffer, self).__del__()
-        glDeleteFramebuffersEXT(1, self.framebuffer_id)
-        glDeleteRenderbuffersEXT(1, self.render_buffer_id)
-        
+        FrameBuffer.__del__(self)
+        Texture2D.__del__(self)
+        glDeleteRenderbuffersEXT(1, [self.depth_buffer_id])