Mesa (master): i965: also using align1 mode for math2 on sandybridge
Zhenyu Wang
zhen at kemper.freedesktop.org
Wed Dec 1 07:05:17 UTC 2010
Module: Mesa
Branch: master
Commit: c530fd3f8a5b5ac6918dece5d9083b2fac4ef78e
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=c530fd3f8a5b5ac6918dece5d9083b2fac4ef78e
Author: Zhenyu Wang <zhenyuw at linux.intel.com>
Date: Wed Dec 1 15:02:46 2010 +0800
i965: also using align1 mode for math2 on sandybridge
Like Eric's workaround patch of commit 490c23ee6be2e8531b5a14d42f808de83d401130.
This forces to align1 mode for math2 too.
---
src/mesa/drivers/dri/i965/brw_vs_emit.c | 56 +++++++++++++++++++++++++++---
1 files changed, 50 insertions(+), 6 deletions(-)
diff --git a/src/mesa/drivers/dri/i965/brw_vs_emit.c b/src/mesa/drivers/dri/i965/brw_vs_emit.c
index 89e4caf..b13e0c2 100644
--- a/src/mesa/drivers/dri/i965/brw_vs_emit.c
+++ b/src/mesa/drivers/dri/i965/brw_vs_emit.c
@@ -697,7 +697,7 @@ emit_math1(struct brw_vs_compile *c,
emit_math1_gen4(c, function, dst, arg0, precision);
}
-static void emit_math2( struct brw_vs_compile *c,
+static void emit_math2_gen4( struct brw_vs_compile *c,
GLuint function,
struct brw_reg dst,
struct brw_reg arg0,
@@ -705,14 +705,11 @@ static void emit_math2( struct brw_vs_compile *c,
GLuint precision)
{
struct brw_compile *p = &c->func;
- struct intel_context *intel = &p->brw->intel;
struct brw_reg tmp = dst;
GLboolean need_tmp = GL_FALSE;
- if (dst.file != BRW_GENERAL_REGISTER_FILE)
- need_tmp = GL_TRUE;
-
- if (intel->gen < 6 && dst.dw1.bits.writemask != 0xf)
+ if (dst.file != BRW_GENERAL_REGISTER_FILE ||
+ dst.dw1.bits.writemask != 0xf)
need_tmp = GL_TRUE;
if (need_tmp)
@@ -735,6 +732,53 @@ static void emit_math2( struct brw_vs_compile *c,
}
}
+static void emit_math2_gen6( struct brw_vs_compile *c,
+ GLuint function,
+ struct brw_reg dst,
+ struct brw_reg arg0,
+ struct brw_reg arg1,
+ GLuint precision)
+{
+ struct brw_compile *p = &c->func;
+ struct brw_reg tmp_src0, tmp_src1, tmp_dst;
+
+ tmp_src0 = get_tmp(c);
+ tmp_src1 = get_tmp(c);
+ tmp_dst = get_tmp(c);
+
+ brw_MOV(p, tmp_src0, arg0);
+ brw_MOV(p, tmp_src1, arg1);
+
+ brw_set_access_mode(p, BRW_ALIGN_1);
+ brw_math2(p,
+ tmp_dst,
+ function,
+ tmp_src0,
+ tmp_src1);
+ brw_set_access_mode(p, BRW_ALIGN_16);
+
+ brw_MOV(p, dst, tmp_dst);
+
+ release_tmp(c, tmp_src0);
+ release_tmp(c, tmp_src1);
+ release_tmp(c, tmp_dst);
+}
+
+static void emit_math2( struct brw_vs_compile *c,
+ GLuint function,
+ struct brw_reg dst,
+ struct brw_reg arg0,
+ struct brw_reg arg1,
+ GLuint precision)
+{
+ struct brw_compile *p = &c->func;
+ struct intel_context *intel = &p->brw->intel;
+
+ if (intel->gen >= 6)
+ emit_math2_gen6(c, function, dst, arg0, arg1, precision);
+ else
+ emit_math2_gen4(c, function, dst, arg0, arg1, precision);
+}
static void emit_exp_noalias( struct brw_vs_compile *c,
struct brw_reg dst,
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