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sna/gen5: Flush the render cache between operations 

When we change the blend mode between operations, it appears that we
must flush the render cache or else we risk render corruption. This is
usually noticeable in rendering of single glyphs.

This was originally fixed for bug 51422, but was reintroduced by
commit 37eb7343be
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Sat Dec 1 09:40:11 2012 +0000

    sna/gen5: Inspired by gen4, reorder the flushing
and the desire to reduce the impact of this w/a.

Reported-by: itumaykin@gmail.com
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=74882
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2014-02-12 16:41:51 +00:00
parent 564a766a6b
commit fb89bfc73f
1 changed files with 1 additions and 1 deletions
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2
src/sna/gen5_render.c
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@ -1017,7 +1017,7 @@ gen5_emit_vertex_elements(struct sna *sna,
inline static void
gen5_emit_pipe_flush(struct sna *sna)
{
#if 0
#if 1
OUT_BATCH(GEN5_PIPE_CONTROL |
GEN5_PIPE_CONTROL_WC_FLUSH |
(4 - 2));