[cairo] FW: [patch] gl: disable GL_DITHER

Chris Wilson chris at chris-wilson.co.uk
Fri Feb 15 07:38:22 PST 2013

On Thu, Feb 14, 2013 at 07:22:45PM +0000, Henry (Yu) Song - SISA wrote:
> re-post patch
> ________________________________________
> From: Henry (Yu) Song - SISA
> Sent: Tuesday, January 29, 2013 9:30 AM
> To: cairo at cairographics.org
> Subject: [patch] gl: disable GL_DITHER
> gl: disable GL_DITHER
> Leaving GL_DITHER enabled (by default) causes color pixel mismatch on 
> some drivers by comparing uploading then glReadPixels and original image

I've pushed it. I had a moment of doubt, thinking that maybe we should
respect GL_DITHER when rendering to the destination, and turn off
differing around Draw/ReadPixels.

Getting that right is easier once someone has a use case for GL_DITHER.

Chris Wilson, Intel Open Source Technology Centre

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