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i965: Add support for LRP in VPs.

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Bug #19226.
This commit is contained in:
Eric Anholt
2009-01-07 12:37:58 -08:00
parent b3c7f7466c
commit f53d9913ac
1 changed files with 42 additions and 0 deletions
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42
src/mesa/drivers/dri/i965/brw_vs_emit.c
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@@ -193,6 +193,7 @@ static void unalias1( struct brw_vs_compile *c,
struct brw_reg tmp = brw_writemask(get_tmp(c), dst.dw1.bits.writemask);
func(c, tmp, arg0);
brw_MOV(p, dst, tmp);
release_tmp(c, tmp);
}
else {
func(c, dst, arg0);
@@ -214,12 +215,38 @@ static void unalias2( struct brw_vs_compile *c,
struct brw_reg tmp = brw_writemask(get_tmp(c), dst.dw1.bits.writemask);
func(c, tmp, arg0, arg1);
brw_MOV(p, dst, tmp);
release_tmp(c, tmp);
}
else {
func(c, dst, arg0, arg1);
}
}
static void unalias3( struct brw_vs_compile *c,
struct brw_reg dst,
struct brw_reg arg0,
struct brw_reg arg1,
struct brw_reg arg2,
void (*func)( struct brw_vs_compile *,
struct brw_reg,
struct brw_reg,
struct brw_reg,
struct brw_reg ))
{
if ((dst.file == arg0.file && dst.nr == arg0.nr) ||
(dst.file == arg1.file && dst.nr == arg1.nr) ||
(dst.file == arg2.file && dst.nr == arg2.nr)) {
struct brw_compile *p = &c->func;
struct brw_reg tmp = brw_writemask(get_tmp(c), dst.dw1.bits.writemask);
func(c, tmp, arg0, arg1, arg2);
brw_MOV(p, dst, tmp);
release_tmp(c, tmp);
}
else {
func(c, dst, arg0, arg1, arg2);
}
}
static void emit_sop( struct brw_compile *p,
struct brw_reg dst,
struct brw_reg arg0,
@@ -590,6 +617,18 @@ static void emit_lit_noalias( struct brw_vs_compile *c,
brw_ENDIF(p, if_insn);
}
static void emit_lrp_noalias(struct brw_vs_compile *c,
struct brw_reg dst,
struct brw_reg arg0,
struct brw_reg arg1,
struct brw_reg arg2)
{
struct brw_compile *p = &c->func;
brw_ADD(p, dst, negate(arg0), brw_imm_f(1.0));
brw_MUL(p, brw_null_reg(), dst, arg2);
brw_MAC(p, dst, arg0, arg1);
}
/** 3 or 4-component vector normalization */
static void emit_nrm( struct brw_vs_compile *c,
@@ -1077,6 +1116,9 @@ void brw_vs_emit(struct brw_vs_compile *c )
case OPCODE_LIT:
unalias1(c, dst, args[0], emit_lit_noalias);
break;
case OPCODE_LRP:
unalias3(c, dst, args[0], args[1], args[2], emit_lrp_noalias);
break;
case OPCODE_MAD:
brw_MOV(p, brw_acc_reg(), args[2]);
brw_MAC(p, dst, args[0], args[1]);