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authorMichal Krol <michal@tungstengraphics.com>2008-08-19 12:07:25 +0200
committerMichal Krol <michal@tungstengraphics.com>2008-08-19 12:08:14 +0200
commit4405e428e4c2a80172c803cc3c4933d546bf2b4d (patch)
treeba34990b1c2e4f5df7959eaa76a4232e814598a7 /src/gallium
parent0d9d2045e86a249a36d8eeebf59979a162c164af (diff)
tgsi: Implement LOG opcode for SSE2 codegen.
Diffstat (limited to 'src/gallium')
-rw-r--r--src/gallium/auxiliary/tgsi/tgsi_exec.c8
-rw-r--r--src/gallium/auxiliary/tgsi/tgsi_sse2.c33
2 files changed, 36 insertions, 5 deletions
diff --git a/src/gallium/auxiliary/tgsi/tgsi_exec.c b/src/gallium/auxiliary/tgsi/tgsi_exec.c
index d584a4e4fa..88a34a6961 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_exec.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_exec.c
@@ -1777,18 +1777,18 @@ exec_instruction(
micro_lg2( &r[1], &r[2] ); /* r1 = lg2(r2) */
micro_flr( &r[0], &r[1] ); /* r0 = floor(r1) */
if (IS_CHANNEL_ENABLED( *inst, CHAN_X )) {
- STORE( &r[0], 0, CHAN_X );
+ STORE( &r[0], 0, CHAN_X );
}
if (IS_CHANNEL_ENABLED( *inst, CHAN_Y )) {
micro_exp2( &r[0], &r[0] ); /* r0 = 2 ^ r0 */
micro_div( &r[0], &r[2], &r[0] ); /* r0 = r2 / r0 */
- STORE( &r[0], 0, CHAN_Y );
+ STORE( &r[0], 0, CHAN_Y );
}
if (IS_CHANNEL_ENABLED( *inst, CHAN_Z )) {
- STORE( &r[1], 0, CHAN_Z );
+ STORE( &r[1], 0, CHAN_Z );
}
if (IS_CHANNEL_ENABLED( *inst, CHAN_W )) {
- STORE( &mach->Temps[TEMP_1_I].xyzw[TEMP_1_C], 0, CHAN_W );
+ STORE( &mach->Temps[TEMP_1_I].xyzw[TEMP_1_C], 0, CHAN_W );
}
break;
diff --git a/src/gallium/auxiliary/tgsi/tgsi_sse2.c b/src/gallium/auxiliary/tgsi/tgsi_sse2.c
index 684bc081e5..485e5a0e6f 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_sse2.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_sse2.c
@@ -1367,7 +1367,38 @@ emit_instruction(
break;
case TGSI_OPCODE_LOG:
- return 0;
+ if (IS_DST0_CHANNEL_ENABLED( *inst, CHAN_X ) ||
+ IS_DST0_CHANNEL_ENABLED( *inst, CHAN_Y ) ||
+ IS_DST0_CHANNEL_ENABLED( *inst, CHAN_Z )) {
+ FETCH( func, *inst, 0, 0, CHAN_X );
+ emit_abs( func, 0 );
+ emit_MOV( func, 1, 0 );
+ emit_lg2( func, 1 );
+ /* dst.z = lg2(abs(src.x)) */
+ if (IS_DST0_CHANNEL_ENABLED( *inst, CHAN_Z )) {
+ STORE( func, *inst, 1, 0, CHAN_Z );
+ }
+ if (IS_DST0_CHANNEL_ENABLED( *inst, CHAN_X ) ||
+ IS_DST0_CHANNEL_ENABLED( *inst, CHAN_Y )) {
+ emit_flr( func, 1 );
+ /* dst.x = floor(lg2(abs(src.x))) */
+ if (IS_DST0_CHANNEL_ENABLED( *inst, CHAN_X )) {
+ STORE( func, *inst, 1, 0, CHAN_X );
+ }
+ /* dst.x = abs(src)/ex2(floor(lg2(abs(src.x)))) */
+ if (IS_DST0_CHANNEL_ENABLED( *inst, CHAN_Y )) {
+ emit_ex2( func, 1 );
+ emit_rcp( func, 1, 1 );
+ emit_mul( func, 0, 1 );
+ STORE( func, *inst, 0, 0, CHAN_Y );
+ }
+ }
+ }
+ /* dst.w = 1.0 */
+ if (IS_DST0_CHANNEL_ENABLED( *inst, CHAN_W )) {
+ emit_tempf( func, 0, TEMP_ONE_I, TEMP_ONE_C );
+ STORE( func, *inst, 0, 0, CHAN_W );
+ }
break;
case TGSI_OPCODE_MUL: