Mesa (master): i965: Implement fast color clears using meta operations

[Kristian Høgsberg]

Module: Mesa
Branch: master
Commit: 2f28a0dc23165123cf1e8b5942acad37878edd8a
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=2f28a0dc23165123cf1e8b5942acad37878edd8a

Author: Kristian Høgsberg <krh at bitplanet.net>
Date:   Mon Jul  7 16:44:58 2014 -0700

i965: Implement fast color clears using meta operations

This patch uses the infrastructure put in place by previous patches
to implement fast color clears and replicated color clears in terms of
meta operations.

This works all the way back to gen7 where fast clear was introduced and
adds support for fast clear on gen8.  It replaces the blorp path
completely and improves on a few cases.  Layered clears are now done
using instanced rendering and multiple render-target clears use a
MRT shader with rep16 writes.

Signed-off-by: Kristian Høgsberg <krh at bitplanet.net>
Acked-by: Kenneth Graunke <kenneth at whitecape.org>

---

 src/mesa/drivers/dri/i965/Makefile.sources      |    2 +-
 src/mesa/drivers/dri/i965/brw_blorp.h           |    8 -
 src/mesa/drivers/dri/i965/brw_blorp_blit.cpp    |    4 +
 src/mesa/drivers/dri/i965/brw_blorp_clear.cpp   |  615 --------------------
 src/mesa/drivers/dri/i965/brw_clear.c           |   12 +-
 src/mesa/drivers/dri/i965/brw_context.c         |    1 +
 src/mesa/drivers/dri/i965/brw_context.h         |   15 +
 src/mesa/drivers/dri/i965/brw_meta_fast_clear.c |  704 +++++++++++++++++++++++
 src/mesa/drivers/dri/i965/intel_mipmap_tree.c   |    4 +-
 src/mesa/drivers/dri/i965/intel_tex_copy.c      |   21 +-
 10 files changed, 744 insertions(+), 642 deletions(-)

Diff:   http://cgit.freedesktop.org/mesa/mesa/diff/?id=2f28a0dc23165123cf1e8b5942acad37878edd8a