[Bug 109759] [BISECTED][REGRESSION][IVB, HSW] Font rendering problem in OpenGL

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Wed Feb 27 11:20:20 UTC 2019


--- Comment #10 from Lionel Landwerlin <lionel.g.landwerlin at linux.intel.com> ---
(In reply to Ian Romanick from comment #8)
> An earlier patch in that series 440c0513406 "i965/vec4/dce: Don't narrow the
> write mask if the flags are used" fixed some things related to swizzles and
> compares.  It's possible that didn't fix all the problems.  It's also
> possible that there are latent problems in cmod propagation.  I would first
> try disabling cmod propagation.  If that fixes the problem, comparing the
> before & after shader assembly should make the problem obvious.  The fix may
> not be so obvious. :)
> As a side note... someone should capture the shaders from this app and put
> them in the public shader-db.

Yeah, but shader-db doesn't tell us whether the generated code is correct :(

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