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authorMichal Krol <michal@vmware.com>2009-04-10 11:58:49 +0200
committerMichal Krol <michal@vmware.com>2009-04-10 11:58:49 +0200
commit5fae9514c235cc5590f15fd802bd762107fc689d (patch)
treec739ec89ac34e88793b1fde3ab74c8bd8cf394fa /src/gallium/auxiliary/tgsi/tgsi_sse2.c
parent05c70f8f5d95708cb4564946effb5c49d09068ec (diff)
tgsi/sse2: Cleanup NRM/NRM4 implementation.
Fix comments. Make sure .w is set to 1.0 for NRM. Optimise for non-.xyzw writemasks.
Diffstat (limited to 'src/gallium/auxiliary/tgsi/tgsi_sse2.c')
-rw-r--r--src/gallium/auxiliary/tgsi/tgsi_sse2.c101
1 files changed, 76 insertions, 25 deletions
diff --git a/src/gallium/auxiliary/tgsi/tgsi_sse2.c b/src/gallium/auxiliary/tgsi/tgsi_sse2.c
index 31225ba430..4b4e34b29e 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_sse2.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_sse2.c
@@ -2178,32 +2178,83 @@ emit_instruction(
/* 3 or 4-component normalization */
{
uint dims = (inst->Instruction.Opcode == TGSI_OPCODE_NRM) ? 3 : 4;
- /* note: cannot use xmm regs 2/3 here (see emit_rsqrt() above) */
- FETCH( func, *inst, 4, 0, CHAN_X ); /* xmm4 = src[0].x */
- FETCH( func, *inst, 5, 0, CHAN_Y ); /* xmm5 = src[0].y */
- FETCH( func, *inst, 6, 0, CHAN_Z ); /* xmm6 = src[0].z */
- if (dims == 4) {
- FETCH( func, *inst, 7, 0, CHAN_W ); /* xmm7 = src[0].w */
- }
- emit_MOV( func, 0, 4 ); /* xmm0 = xmm3 */
- emit_mul( func, 0, 4 ); /* xmm0 *= xmm3 */
- emit_MOV( func, 1, 5 ); /* xmm1 = xmm4 */
- emit_mul( func, 1, 5 ); /* xmm1 *= xmm4 */
- emit_add( func, 0, 1 ); /* xmm0 += xmm1 */
- emit_MOV( func, 1, 6 ); /* xmm1 = xmm5 */
- emit_mul( func, 1, 6 ); /* xmm1 *= xmm5 */
- emit_add( func, 0, 1 ); /* xmm0 += xmm1 */
- if (dims == 4) {
- emit_MOV( func, 1, 7 ); /* xmm1 = xmm7 */
- emit_mul( func, 1, 7 ); /* xmm1 *= xmm7 */
- emit_add( func, 0, 0 ); /* xmm0 += xmm1 */
- }
- emit_rsqrt( func, 1, 0 ); /* xmm1 = 1/sqrt(xmm0) */
- FOR_EACH_DST0_ENABLED_CHANNEL( *inst, chan_index ) {
- if (chan_index < dims) {
- emit_mul( func, 4+chan_index, 1); /* xmm[4+ch] *= xmm1 */
- STORE( func, *inst, 4+chan_index, 0, chan_index );
+
+ if (IS_DST0_CHANNEL_ENABLED(*inst, CHAN_X) ||
+ IS_DST0_CHANNEL_ENABLED(*inst, CHAN_Y) ||
+ IS_DST0_CHANNEL_ENABLED(*inst, CHAN_Z) ||
+ (IS_DST0_CHANNEL_ENABLED(*inst, CHAN_W) && dims == 4)) {
+
+ /* NOTE: Cannot use xmm regs 2/3 here (see emit_rsqrt() above). */
+
+ /* xmm4 = src.x */
+ /* xmm0 = src.x * src.x */
+ FETCH(func, *inst, 0, 0, CHAN_X);
+ if (IS_DST0_CHANNEL_ENABLED(*inst, CHAN_X)) {
+ emit_MOV(func, 4, 0);
}
+ emit_mul(func, 0, 0);
+
+ /* xmm5 = src.y */
+ /* xmm0 = xmm0 + src.y * src.y */
+ FETCH(func, *inst, 1, 0, CHAN_Y);
+ if (IS_DST0_CHANNEL_ENABLED(*inst, CHAN_Y)) {
+ emit_MOV(func, 5, 1);
+ }
+ emit_mul(func, 1, 1);
+ emit_add(func, 0, 1);
+
+ /* xmm6 = src.z */
+ /* xmm0 = xmm0 + src.z * src.z */
+ FETCH(func, *inst, 1, 0, CHAN_Z);
+ if (IS_DST0_CHANNEL_ENABLED(*inst, CHAN_Z)) {
+ emit_MOV(func, 6, 1);
+ }
+ emit_mul(func, 1, 1);
+ emit_add(func, 0, 1);
+
+ if (dims == 4) {
+ /* xmm7 = src.w */
+ /* xmm0 = xmm0 + src.w * src.w */
+ FETCH(func, *inst, 1, 0, CHAN_W);
+ if (IS_DST0_CHANNEL_ENABLED(*inst, CHAN_W)) {
+ emit_MOV(func, 7, 1);
+ }
+ emit_mul(func, 1, 1);
+ emit_add(func, 0, 1);
+ }
+
+ /* xmm1 = 1 / sqrt(xmm0) */
+ emit_rsqrt(func, 1, 0);
+
+ /* dst.x = xmm1 * src.x */
+ if (IS_DST0_CHANNEL_ENABLED(*inst, CHAN_X)) {
+ emit_mul(func, 4, 1);
+ STORE(func, *inst, 4, 0, CHAN_X);
+ }
+
+ /* dst.y = xmm1 * src.y */
+ if (IS_DST0_CHANNEL_ENABLED(*inst, CHAN_Y)) {
+ emit_mul(func, 5, 1);
+ STORE(func, *inst, 5, 0, CHAN_Y);
+ }
+
+ /* dst.z = xmm1 * src.z */
+ if (IS_DST0_CHANNEL_ENABLED(*inst, CHAN_Z)) {
+ emit_mul(func, 6, 1);
+ STORE(func, *inst, 6, 0, CHAN_Z);
+ }
+
+ /* dst.w = xmm1 * src.w */
+ if (IS_DST0_CHANNEL_ENABLED(*inst, CHAN_X) && dims == 4) {
+ emit_mul(func, 7, 1);
+ STORE(func, *inst, 7, 0, CHAN_W);
+ }
+ }
+
+ /* dst0.w = 1.0 */
+ if (IS_DST0_CHANNEL_ENABLED(*inst, CHAN_W) && dims == 3) {
+ emit_tempf(func, 0, TEMP_ONE_I, TEMP_ONE_C);
+ STORE(func, *inst, 0, 0, CHAN_W);
}
}
break;