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authorBrian <brian.paul@tungstengraphics.com>2008-11-06 19:24:47 -0700
committerBrian <brian.paul@tungstengraphics.com>2008-11-06 19:25:21 -0700
commitbb8a9ce705f309a3b38d10c61c3865db79a0f71c (patch)
treede2f3d191ce905ee362b5c371d7274908d49a90f /src/gallium/auxiliary
parent2f1a29654a94a4194fa452e8049c4db67629e545 (diff)
gallium: implement TGSI_OPCODE_NRM/NRM4 in tgsi_exec.c
Diffstat (limited to 'src/gallium/auxiliary')
-rw-r--r--src/gallium/auxiliary/tgsi/tgsi_exec.c59
1 files changed, 58 insertions, 1 deletions
diff --git a/src/gallium/auxiliary/tgsi/tgsi_exec.c b/src/gallium/auxiliary/tgsi/tgsi_exec.c
index 53e92b96ae..41dffc3dba 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_exec.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_exec.c
@@ -2462,7 +2462,64 @@ exec_instruction(
break;
case TGSI_OPCODE_NRM:
- assert (0);
+ /* 3-component vector normalize */
+ {
+ union tgsi_exec_channel tmp, dot;
+
+ /* tmp = dp3(src0, src0): */
+ FETCH( &r[0], 0, CHAN_X );
+ micro_mul( &tmp, &r[0], &r[0] );
+
+ FETCH( &r[1], 0, CHAN_Y );
+ micro_mul( &dot, &r[1], &r[1] );
+ micro_add( &tmp, &tmp, &dot );
+
+ FETCH( &r[2], 0, CHAN_Z );
+ micro_mul( &dot, &r[2], &r[2] );
+ micro_add( &tmp, &tmp, &dot );
+
+ /* tmp = 1 / tmp */
+ micro_div( &tmp, &mach->Temps[TEMP_1_I].xyzw[TEMP_1_C], &tmp );
+
+ /* note: w channel is undefined */
+ FOR_EACH_ENABLED_CHANNEL( *inst, chan_index ) {
+ /* chan = chan * tmp */
+ micro_mul( &r[chan_index], &tmp, &r[chan_index] );
+ STORE( &r[chan_index], 0, chan_index );
+ }
+ }
+ break;
+
+ case TGSI_OPCODE_NRM4:
+ /* 4-component vector normalize */
+ {
+ union tgsi_exec_channel tmp, dot;
+
+ /* tmp = dp4(src0, src0): */
+ FETCH( &r[0], 0, CHAN_X );
+ micro_mul( &tmp, &r[0], &r[0] );
+
+ FETCH( &r[1], 0, CHAN_Y );
+ micro_mul( &dot, &r[1], &r[1] );
+ micro_add( &tmp, &tmp, &dot );
+
+ FETCH( &r[2], 0, CHAN_Z );
+ micro_mul( &dot, &r[2], &r[2] );
+ micro_add( &tmp, &tmp, &dot );
+
+ FETCH( &r[3], 0, CHAN_W );
+ micro_mul( &dot, &r[3], &r[3] );
+ micro_add( &tmp, &tmp, &dot );
+
+ /* tmp = 1 / tmp */
+ micro_div( &tmp, &mach->Temps[TEMP_1_I].xyzw[TEMP_1_C], &tmp );
+
+ FOR_EACH_ENABLED_CHANNEL( *inst, chan_index ) {
+ /* chan = chan * tmp */
+ micro_mul( &r[chan_index], &tmp, &r[chan_index] );
+ STORE( &r[chan_index], 0, chan_index );
+ }
+ }
break;
case TGSI_OPCODE_DIV: