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[Bug 1024208] Re: [regression-r3320][GLES] td plugin (3d Windows for the cube) has severe clipping/transformation glitches

To: compiz@xxxxxxxxxxxxxxxxxxx
From: Eleni Maria Stea <1024208@xxxxxxxxxxxxxxxxxx>
Date: Tue, 13 Oct 2015 11:43:08 -0000
Reply-to: Bug 1024208 <1024208@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

Progress update:
In the linked branch above I can fake the clipping on the pixel shader as follows: instead of clipping polygons in view space I discard the pixels that would be clipped by the planes in the fragment shader. The shaders have been tested and work with the fixed function pipeline 3d windows implementation.

TODO:
In order to have clipping in GLES2 I need to modify the compiz shader system (see opengl plugin) to accept clipping planes and re-write the td function to use GLES2 compatible code. This is in progress but it's not a priority so, be patient...

The 3d windows work OK on the desktop.

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https://bugs.launchpad.net/bugs/1024208

Title:
  [regression-r3320][GLES] td plugin (3d Windows for the cube) has
  severe clipping/transformation glitches

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