Mesa (master): vc4: Fix early Z behavior on hardware.

[Eric Anholt]

Module: Mesa
Branch: master
Commit: d1f2fc834d1c662726e30ff51d843e3ecd4b06d6
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=d1f2fc834d1c662726e30ff51d843e3ecd4b06d6

Author: Eric Anholt <eric at anholt.net>
Date:   Wed Jan 14 17:11:59 2015 +1300

vc4: Fix early Z behavior on hardware.

It turns out the simulator was not treating this bit the same as the RPi,
and I'd forgotten to remove it when turning on early Z.  The result was
that you'd get big chunks of your rendering missing.

---

 src/gallium/drivers/vc4/vc4_context.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/gallium/drivers/vc4/vc4_context.c b/src/gallium/drivers/vc4/vc4_context.c
index 4c84bd3..6729fa3 100644
--- a/src/gallium/drivers/vc4/vc4_context.c
+++ b/src/gallium/drivers/vc4/vc4_context.c
@@ -151,8 +151,7 @@ vc4_setup_rcl(struct vc4_context *vc4)
                             VC4_RENDER_CONFIG_MEMORY_FORMAT_SHIFT) |
                            (vc4_rt_format_is_565(render_surf->base.format) ?
                             VC4_RENDER_CONFIG_FORMAT_BGR565 :
-                            VC4_RENDER_CONFIG_FORMAT_RGBA8888) |
-                           VC4_RENDER_CONFIG_EARLY_Z_COVERAGE_DISABLE));
+                            VC4_RENDER_CONFIG_FORMAT_RGBA8888)));
 
         /* The tile buffer normally gets cleared when the previous tile is
          * stored.  If the clear values changed between frames, then the tile