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authorBrian Paul <brianp@vmware.com>2008-12-31 16:49:58 -0700
committerBrian Paul <brianp@vmware.com>2009-01-01 14:05:30 -0700
commit131ac5b465d1f676ca2e592e4fecfcbc14b23b49 (patch)
treededecb452ec6bd991b56c9c6a32b9759b55c2dcd /src
parent23b0ad4d7e9130a07fec1e968777dfa59bc1d54e (diff)
i965: implement OPCODE_NRM3/NRM4
Diffstat (limited to 'src')
-rw-r--r--src/mesa/drivers/dri/i965/brw_vs_emit.c36
1 files changed, 33 insertions, 3 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_vs_emit.c b/src/mesa/drivers/dri/i965/brw_vs_emit.c
index ebd8a17f795..10f3e281908 100644
--- a/src/mesa/drivers/dri/i965/brw_vs_emit.c
+++ b/src/mesa/drivers/dri/i965/brw_vs_emit.c
@@ -591,6 +591,31 @@ static void emit_lit_noalias( struct brw_vs_compile *c,
}
+/** 3 or 4-component vector normalization */
+static void emit_nrm( struct brw_vs_compile *c,
+ struct brw_reg dst,
+ struct brw_reg arg0,
+ int num_comps)
+{
+ struct brw_compile *p = &c->func;
+ struct brw_reg tmp = get_tmp(c);
+
+ /* tmp = dot(arg0, arg0) */
+ if (num_comps == 3)
+ brw_DP3(p, tmp, arg0, arg0);
+ else
+ brw_DP4(p, tmp, arg0, arg0);
+
+ /* tmp = 1 / tmp */
+ emit_math1(c, BRW_MATH_FUNCTION_RSQ, tmp, tmp, BRW_MATH_PRECISION_FULL);
+
+ /* dst = arg0 * tmp */
+ brw_MUL(p, dst, arg0, tmp);
+
+ release_tmp(c, tmp);
+}
+
+
/* TODO: relative addressing!
*/
static struct brw_reg get_reg( struct brw_vs_compile *c,
@@ -1019,6 +1044,12 @@ void brw_vs_emit(struct brw_vs_compile *c )
case OPCODE_DPH:
brw_DPH(p, dst, args[0], args[1]);
break;
+ case OPCODE_NRM3:
+ emit_nrm(c, dst, args[0], 3);
+ break;
+ case OPCODE_NRM4:
+ emit_nrm(c, dst, args[0], 4);
+ break;
case OPCODE_DST:
unalias2(c, dst, args[0], args[1], emit_dst_noalias);
break;
@@ -1145,11 +1176,10 @@ void brw_vs_emit(struct brw_vs_compile *c )
/* no-op instructions */
break;
default:
- _mesa_printf("Unsupported opcode %i (%s) in vertex shader\n",
- inst->Opcode, inst->Opcode < MAX_OPCODE ?
+ _mesa_problem(NULL, "Unsupported opcode %i (%s) in vertex shader",
+ inst->Opcode, inst->Opcode < MAX_OPCODE ?
_mesa_opcode_string(inst->Opcode) :
"unknown");
- break;
}
if ((inst->DstReg.File == PROGRAM_OUTPUT)