diff options
| author | Michal Krol <michal@tungstengraphics.com> | 2008-08-19 12:07:25 +0200 |
|---|---|---|
| committer | Michal Krol <michal@tungstengraphics.com> | 2008-08-19 12:08:14 +0200 |
| commit | 4405e428e4c2a80172c803cc3c4933d546bf2b4d (patch) | |
| tree | ba34990b1c2e4f5df7959eaa76a4232e814598a7 /src/gallium/auxiliary/tgsi/tgsi_sse2.c | |
| parent | 0d9d2045e86a249a36d8eeebf59979a162c164af (diff) | |
tgsi: Implement LOG opcode for SSE2 codegen.
Diffstat (limited to 'src/gallium/auxiliary/tgsi/tgsi_sse2.c')
| -rw-r--r-- | src/gallium/auxiliary/tgsi/tgsi_sse2.c | 33 |
1 files changed, 32 insertions, 1 deletions
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: |