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| author | Brian Paul <brian.paul@tungstengraphics.com> | 2008-04-18 11:15:53 -0600 |
|---|---|---|
| committer | Brian Paul <brian.paul@tungstengraphics.com> | 2008-04-18 11:46:00 -0600 |
| commit | e430d885e0d819172068805b1492cb6f10eb5d7f (patch) | |
| tree | 72d27ed26ade492d22c66c735d4cc29b0bd3a46c /src/gallium/auxiliary/tgsi | |
| parent | 19218e2195f3dffc9403f16a742ba8c63edbf8b4 (diff) | |
gallium: a few comments
Diffstat (limited to 'src/gallium/auxiliary/tgsi')
| -rwxr-xr-x | src/gallium/auxiliary/tgsi/exec/tgsi_sse2.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/tgsi/exec/tgsi_sse2.c b/src/gallium/auxiliary/tgsi/exec/tgsi_sse2.c index 6f785be3f5..d47935e982 100755 --- a/src/gallium/auxiliary/tgsi/exec/tgsi_sse2.c +++ b/src/gallium/auxiliary/tgsi/exec/tgsi_sse2.c @@ -1598,20 +1598,25 @@ emit_instruction( STORE( func, *inst, 0, 0, CHAN_Y ); } if( IS_DST0_CHANNEL_ENABLED( *inst, CHAN_Z ) ) { + /* XMM[1] = SrcReg[0].yyyy */ FETCH( func, *inst, 1, 0, CHAN_Y ); + /* XMM[1] = max(XMM[1], 0) */ emit_maxps( func, make_xmm( 1 ), get_temp( TGSI_EXEC_TEMP_00000000_I, TGSI_EXEC_TEMP_00000000_C ) ); + /* XMM[2] = SrcReg[0].wwww */ FETCH( func, *inst, 2, 0, CHAN_W ); + /* XMM[2] = min(XMM[2], 128.0) */ emit_minps( func, make_xmm( 2 ), get_temp( TGSI_EXEC_TEMP_128_I, TGSI_EXEC_TEMP_128_C ) ); + /* XMM[2] = max(XMM[2], -128.0) */ emit_maxps( func, make_xmm( 2 ), |