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i965: also using align1 mode for math2 on sandybridge

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Like Eric's workaround patch of commit 490c23ee6b.
This forces to align1 mode for math2 too.
This commit is contained in:
Zhenyu Wang
2010-12-01 15:02:46 +08:00
parent 06e7a55028
commit c530fd3f8a
1 changed files with 50 additions and 6 deletions
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src/mesa/drivers/dri/i965/brw_vs_emit.c
+50 -6
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@@ -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,