From a03974ffb95bf36240f02ea0d45405ca8030956f Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Mon, 25 Jul 2011 11:50:27 -0700 Subject: [PATCH] i965: Emit texture cache flushes on gen6 along with render cache flushes. It turns out that internally the texture cache gets flushed in a couple of cases, particularly around 2D operations mixed with 3D. In almost all cases one of those happens between rendering to an FBO-attached texture and rendering from that texture. However, as of the next patch, glean tfbo (and the new fbo-flushing-2 test) would manage to get stale texture values because one of those flushes didn't occur. The intention of this code was always to get the render cache cleared and ready to be used from the sampler cache (and it does on <= gen4), so this just catches gen5 up. This patch was also tested to fix fbo-flushing on gen7. (cherry picked from commit 185868c9c2e6a31a7313df2dbe29490547b65f61) --- src/mesa/drivers/dri/intel/intel_batchbuffer.c | 1 + 1 file changed, 1 insertion(+) diff --git a/src/mesa/drivers/dri/intel/intel_batchbuffer.c b/src/mesa/drivers/dri/intel/intel_batchbuffer.c index dca3b3e5983..7ee802be9de 100644 --- a/src/mesa/drivers/dri/intel/intel_batchbuffer.c +++ b/src/mesa/drivers/dri/intel/intel_batchbuffer.c @@ -388,6 +388,7 @@ intel_batchbuffer_emit_mi_flush(struct intel_context *intel) OUT_BATCH(PIPE_CONTROL_INSTRUCTION_FLUSH | PIPE_CONTROL_WRITE_FLUSH | PIPE_CONTROL_DEPTH_CACHE_FLUSH | + PIPE_CONTROL_TC_FLUSH | PIPE_CONTROL_NO_WRITE); OUT_BATCH(0); /* write address */ OUT_BATCH(0); /* write data */