[Mesa-dev] wider registers in llvmpipe

[Kristian Høgsberg]

On Tue, Jul 17, 2012 at 05:57:37AM -0700, Jose Fonseca wrote:
> ----- Original Message -----
> > FYI, I've just pushed a branch named llvmpipe-wider-regs, which
> > allows llvmpipe to leverage SIMD registers wider than 128bits.
> > 
> > Unfortunately, performance-wise this doesn't change much, as llvmpipe
> > performance is dominated by integer SIMD instructions, whereas
> > currently the AVX instruction set currently only supports floating
> > SIMD instructions.  Actually, often things will get slightly slower,
> > as there are considerable overheads in piecing together the 256
> > floating point code paths and 128-bit integer code paths.
> > 
> > The benefit for this change is foremost architectural: llvmpipe now
> > makes less assumptions regarding the number of pixels/quads/etc that
> > fit into a hardware register, a flexibility which will be necessary
> > to get things like per-pixel LOD working properly.
> > 
> > This barely touch files outside gallivm/draw/llvmpipe modules. I
> > haven't tested i915g, r300g, so let me know if there are regressions
> > / concerns. I'd like to merge this into master soon.
> 
> I went ahead and pushed, after doing more testing. If there's any regression on any driver as consequence just let me know.

We'll need something like this.

Kristian

>From 1ae59bde4c960004aa22255b25fb4175beaafdd6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Kristian=20H=C3=B8gsberg?= <krh at bitplanet.net>
Date: Tue, 17 Jul 2012 09:24:39 -0400
Subject: [PATCH] gallium: Add $(TOP)/src/gallium/auxiliary/util to include
 path
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So we pick up the new util/u_cpu_detect.h

Signed-off-by: Kristian Høgsberg <krh at bitplanet.net>
---
 src/gallium/Makefile.template |    1 +
 1 file changed, 1 insertion(+)

diff --git a/src/gallium/Makefile.template b/src/gallium/Makefile.template
index 036c119..ed14977 100644
--- a/src/gallium/Makefile.template
+++ b/src/gallium/Makefile.template
@@ -20,6 +20,7 @@ INCLUDES = \
 	-I. \
 	-I$(TOP)/src/gallium/include \
 	-I$(TOP)/src/gallium/auxiliary \
+	-I$(TOP)/src/gallium/auxiliary/util \
 	-I$(TOP)/src/gallium/drivers \
 	$(LIBRARY_INCLUDES)
 
-- 
1.7.10.2