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authorEric Anholt <eric@anholt.net>2009-01-07 12:37:58 -0800
committerEric Anholt <eric@anholt.net>2009-01-07 12:40:16 -0800
commitf53d9913ac8efa5cefa428eb21f91298aca78293 (patch)
tree3081568e19c89c50049c49db403546eec754a2c7 /src
parentb3c7f7466c068a5eaeb5adf981b6f776560bb6c9 (diff)
i965: Add support for LRP in VPs.
Bug #19226.
Diffstat (limited to 'src')
-rw-r--r--src/mesa/drivers/dri/i965/brw_vs_emit.c42
1 files changed, 42 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_vs_emit.c b/src/mesa/drivers/dri/i965/brw_vs_emit.c
index 71e2a95bfd9..27301629684 100644
--- a/src/mesa/drivers/dri/i965/brw_vs_emit.c
+++ b/src/mesa/drivers/dri/i965/brw_vs_emit.c
@@ -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]);