Fixed a lot of bugs with render surfaces and bitmaps.

samples/o3d-webgl/render_surface_set.js

 /*
  * Copyright 2010, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 70 matching lines @@
       this.gl.FRAMEBUFFER, this.renderSurface.framebuffer_);
 
   this.gl.framebufferRenderbuffer(
       this.gl.FRAMEBUFFER,
       this.gl.COLOR_ATTACHMENT0,
       this.gl.RENDERBUFFER,
       0);
 
   this.gl.framebufferRenderbuffer(
       this.gl.FRAMEBUFFER,
-      this.gl.DEPTH_STENCIL_ATTACHMENT,
+      this.gl.DEPTH_ATTACHMENT,
       this.gl.RENDERBUFFER,
       0);
 
   this.gl.bindFramebuffer(this.gl.FRAMEBUFFER, 0);
 };
 
 
 /**
  * Helper function to set up both the color and depth-stencil targets.
  * @private
@@ skipping 54 matching lines @@
  * Called during the rendergraph traversal after the children are rendered.
  * @private
  */
 o3d.RenderSurfaceSet.prototype.after = function() {
   this.clearFramebufferObjects_();
   this.gl.displayInfo.height = this.previousHeight;
   this.gl.displayInfo.width = this.previousWidth;
 };