[PATCH 0/3] glamor: Disable shader-based trapezoids. Bug 76213.

Eric Anholt eric at anholt.net
Wed Aug 6 13:53:06 PDT 2014


Keith Packard <keithp at keithp.com> writes:

> The shader-based trapezoid drawing code in glamor draws incorrectly
> and doesn't appear to offer any performance benefits. This series
> fixes a couple of compiler warning problems and then disables the
> shader based trapezoid code.
>
> This fixes the bottom and right shadows in the XFCE panel when drawn
> with system style as seen in this bug report:

Can we just delete the existing traps code, instead?  It looks like it's
trying to compute coverage using area, which we know isn't right.
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