In my clutter application, some of my images are not showing up. (Just blank space instead of the image.) This started occurring after the following commit:
http://git.clutter-project.org/clutter/commit/?id=6cf5ee2cbdad4bb71a065bb7e49a534ca7ba78ac cogl-atlas-texture: Try to do texture blits using an FBO When reorganizing the textures, we can avoid downloading the entire texture data if we bind the source texture in a framebuffer object and copy the destination using glCopyTexSubImage2D. This is also implemented using a much faster path in Mesa. Currently it is calling the GL framebuffer API directly but ideally it would use the Cogl offscreen API. However there is no way to tell Cogl not to create a stencil renderbuffer which seems like a waste in this situation. If FBOs are not available it will fallback to reading back the entire texture data as before. I am using the Imagination graphics core and IEGD driver for the Menlow HW. (My theory is it might be related to the graphics driver, but I am not sure.) Is there an easy way of temporarily disabling this functionality to test out my theory without removing the code? (environment variable or API call) Also, do any of the Intel guys on here know if Intel validates the IEGD driver against Clutter? Regards, Chris
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