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Fix llvm 3.8 radeonsi tess bug (#1413888)

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Dave Airlie 2017-01-24 13:18:38 +10:00
parent ab7cedf46f
commit e9ab3825d5
2 changed files with 43 additions and 1 deletions
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36
mesa-13.0-fix-radeonsi-tess.patch Normal file
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@ -0,0 +1,36 @@
From 57f18623fb94891c04f3a395cfd977ea3747ee61 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marek=20Ol=C5=A1=C3=A1k?= <marek.olsak@amd.com>
Date: Tue, 17 Jan 2017 13:45:42 +0100
Subject: radeonsi: for the tess barrier, only use emit_waitcnt on SI and LLVM
3.9+
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Cc: 17.0 13.0 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
diff --git a/src/gallium/drivers/radeonsi/si_shader.c b/src/gallium/drivers/radeonsi/si_shader.c
index f404273..10f40a9 100644
--- a/src/gallium/drivers/radeonsi/si_shader.c
+++ b/src/gallium/drivers/radeonsi/si_shader.c
@@ -5440,10 +5440,13 @@ static void si_llvm_emit_barrier(const struct lp_build_tgsi_action *action,
struct si_shader_context *ctx = si_shader_context(bld_base);
struct gallivm_state *gallivm = bld_base->base.gallivm;
- /* The real barrier instruction isn’t needed, because an entire patch
+ /* SI only (thanks to a hw bug workaround):
+ * The real barrier instruction isn’t needed, because an entire patch
* always fits into a single wave.
*/
- if (ctx->type == PIPE_SHADER_TESS_CTRL) {
+ if (HAVE_LLVM >= 0x0309 &&
+ ctx->screen->b.chip_class == SI &&
+ ctx->type == PIPE_SHADER_TESS_CTRL) {
emit_waitcnt(ctx, LGKM_CNT & VM_CNT);
return;
}
--
cgit v0.10.2

8
mesa.spec
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@ -59,7 +59,7 @@
Name: mesa
Summary: Mesa graphics libraries
Version: 13.0.3
Release: 3%{?rctag:.%{rctag}}%{?dist}
Release: 4%{?rctag:.%{rctag}}%{?dist}
License: MIT
URL: http://www.mesa3d.org
@ -84,6 +84,9 @@ Patch12: glvnd-fix-gl-dot-pc.patch
Patch13: 0001-Fix-linkage-against-shared-glapi.patch
Patch14: 0001-glapi-Link-with-glapi-when-built-shared.patch
# regression fix should be in 13.0.4
Patch15: mesa-13.0-fix-radeonsi-tess.patch
BuildRequires: gcc
BuildRequires: gcc-c++
BuildRequires: automake
@ -679,6 +682,9 @@ popd
%endif
%changelog
* Tue Jan 24 2017 Dave Airlie <airlied@redhat.com< - 13.0.3-4
- Fix llvm 3.8 radeonsi tess bug (#1413888)
* Tue Jan 17 2017 Hans de Goede <hdegoede@redhat.com> - 13.0.3-3
- Enable libglvnd support (rhbz#1413579)