Worth trying just:
diff --git a/src/sna/gen4_render.c b/src/sna/gen4_render.c
index 637137e..dc80de3 100644
--- a/src/sna/gen4_render.c
+++ b/src/sna/gen4_render.c
@@ -660,9 +660,11 @@ inline static int gen4_get_rectangles(struct sna *sna,
if (rem <= 0) {
if (sna->render.vertex_offset) {
gen4_vertex_flush(sna);
- if (gen4_magic_ca_pass(sna, op))
+ if (gen4_magic_ca_pass(sna, op)) {
+ OUT_BATCH(MI_FLUSH |
MI_INHIBIT_RENDER_CACHE_FLUSH);
gen4_emit_pipelined_pointers(sna, op,
op->op,
op->u.gen4.wm_kernel);
+ }
}
OUT_BATCH(MI_FLUSH | MI_INHIBIT_RENDER_CACHE_FLUSH);
rem = MAX_FLUSH_VERTICES;
if you are happy that it reproduces reliably.
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https://bugs.launchpad.net/bugs/1098489
Title:
[gen4] Corruption in Chrome omni bar results using Intel SNA
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