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i965: Don't compute-to-MRF in gen6 VS math.

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There was code to do this for pre-gen6 already, this just enables it
for gen6 as well.
This commit is contained in:
Eric Anholt 2010-10-11 13:56:29 -07:00
parent 720ed3c906
commit 17306c60ad
1 changed files with 15 additions and 7 deletions
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22
src/mesa/drivers/dri/i965/brw_vs_emit.c
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@ -593,11 +593,15 @@ static void emit_math1( struct brw_vs_compile *c,
struct brw_compile *p = &c->func;
struct intel_context *intel = &p->brw->intel;
struct brw_reg tmp = dst;
GLboolean need_tmp = (intel->gen < 6 &&
(dst.dw1.bits.writemask != 0xf ||
dst.file != BRW_GENERAL_REGISTER_FILE));
GLboolean need_tmp = GL_FALSE;
if (need_tmp)
if (dst.file != BRW_GENERAL_REGISTER_FILE)
need_tmp = GL_TRUE;
if (intel->gen < 6 && dst.dw1.bits.writemask != 0xf)
need_tmp = GL_TRUE;
if (need_tmp)
tmp = get_tmp(c);
brw_math(p,
@ -626,9 +630,13 @@ static void emit_math2( struct brw_vs_compile *c,
struct brw_compile *p = &c->func;
struct intel_context *intel = &p->brw->intel;
struct brw_reg tmp = dst;
GLboolean need_tmp = (intel->gen < 6 &&
(dst.dw1.bits.writemask != 0xf ||
dst.file != BRW_GENERAL_REGISTER_FILE));
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)
need_tmp = GL_TRUE;
if (need_tmp)
tmp = get_tmp(c);