Author: post
Date: 2009-10-12 17:35:30 +0200 (Mon, 12 Oct 2009)
New Revision: 2699
Modified:
trunk/plugins/dcp/dcp.c
Log:
DCP Assembler: Convert to int using truncation (instead of subtracting 0.5
before).
Modified: trunk/plugins/dcp/dcp.c
===================================================================
--- trunk/plugins/dcp/dcp.c 2009-10-11 15:36:36 UTC (rev 2698)
+++ trunk/plugins/dcp/dcp.c 2009-10-12 15:35:30 UTC (rev 2699)
@@ -771,11 +771,10 @@
__m128 hScaled = _mm_mul_ps(h, _mm_set_ps( hScale, hScale,
hScale, hScale));
__m128 sScaled = _mm_mul_ps(s, _mm_set_ps( sScale, sScale,
sScale, sScale));
- __m128 half_ps = _mm_set_ps(0.5, 0.5, 0.5, 0.5);
__m128i maxHueIndex0 = _mm_set_epi32(_maxHueIndex0,
_maxHueIndex0, _maxHueIndex0, _maxHueIndex0);
__m128i maxSatIndex0 = _mm_set_epi32(_maxSatIndex0,
_maxSatIndex0, _maxSatIndex0, _maxSatIndex0);
- __m128i hIndex0 = _mm_cvtps_epi32(_mm_sub_ps( hScaled, half_ps
));
- __m128i sIndex0 = _mm_cvtps_epi32(_mm_sub_ps( sScaled, half_ps
));
+ __m128i hIndex0 = _mm_cvttps_epi32( hScaled );
+ __m128i sIndex0 = _mm_cvttps_epi32( sScaled );
sIndex0 = _mm_min_epi16(sIndex0, maxSatIndex0);
__m128i ones_epi32 = _mm_set_epi32(1,1,1,1);
@@ -791,7 +790,7 @@
__m128 hFract1 = _mm_sub_ps( hScaled, _mm_cvtepi32_ps(hIndex0));
__m128 sFract1 = _mm_sub_ps( sScaled, _mm_cvtepi32_ps(sIndex0));
- __m128 ones_ps = _mm_add_ps( half_ps, half_ps);
+ __m128 ones_ps = _mm_set_ps(1.0f, 1.0f, 1.0f, 1.0f);
__m128 hFract0 = _mm_sub_ps(ones_ps, hFract1);
__m128 sFract0 = _mm_sub_ps(ones_ps, sFract1);
@@ -848,13 +847,12 @@
__m128 sScaled = _mm_mul_ps(s, _mm_set_ps( sScale, sScale,
sScale, sScale));
__m128 vScaled = _mm_mul_ps(v, _mm_set_ps( vScale, vScale,
vScale, vScale));
- __m128 half_ps = _mm_set_ps(0.5, 0.5, 0.5, 0.5);
__m128i maxHueIndex0 = _mm_set_epi32(_maxHueIndex0,
_maxHueIndex0, _maxHueIndex0, _maxHueIndex0);
__m128i maxSatIndex0 = _mm_set_epi32(_maxSatIndex0,
_maxSatIndex0, _maxSatIndex0, _maxSatIndex0);
__m128i maxValIndex0 = _mm_set_epi32(_maxValIndex0,
_maxValIndex0, _maxValIndex0, _maxValIndex0);
- __m128i hIndex0 = _mm_cvtps_epi32(_mm_sub_ps( hScaled, half_ps
));
- __m128i sIndex0 = _mm_cvtps_epi32(_mm_sub_ps( sScaled, half_ps
));
- __m128i vIndex0 = _mm_cvtps_epi32(_mm_sub_ps( vScaled, half_ps
));
+ __m128i hIndex0 = _mm_cvttps_epi32(hScaled);
+ __m128i sIndex0 = _mm_cvttps_epi32(sScaled);
+ __m128i vIndex0 = _mm_cvttps_epi32(vScaled);
// Requires that maxSatIndex0 and sIndex0 can be contained
within a 16 bit signed word.
sIndex0 = _mm_min_epi16(sIndex0, maxSatIndex0);
@@ -874,7 +872,7 @@
__m128 hFract1 = _mm_sub_ps( hScaled, _mm_cvtepi32_ps(hIndex0));
__m128 sFract1 = _mm_sub_ps( sScaled, _mm_cvtepi32_ps(sIndex0));
__m128 vFract1 = _mm_sub_ps( vScaled, _mm_cvtepi32_ps(vIndex0));
- __m128 ones_ps = _mm_add_ps( half_ps, half_ps);
+ __m128 ones_ps = _mm_set_ps(1.0f, 1.0f, 1.0f, 1.0f);
__m128 hFract0 = _mm_sub_ps(ones_ps, hFract1);
__m128 sFract0 = _mm_sub_ps(ones_ps, sFract1);
@@ -1239,9 +1237,8 @@
/* Convert get the fraction of h
* h_fraction = h - (float)(int)h */
- __m128 half_ps = _mm_set_ps(0.5f, 0.5f, 0.5f, 0.5f);
- __m128 h_fraction =
_mm_sub_ps(h,_mm_cvtepi32_ps(_mm_cvtps_epi32(_mm_sub_ps(h, half_ps))));
- __m128 ones_ps = _mm_add_ps(half_ps, half_ps);
+ __m128 ones_ps = _mm_set_ps(1.0f, 1.0f, 1.0f, 1.0f);
+ __m128 h_fraction =
_mm_sub_ps(h,_mm_cvtepi32_ps(_mm_cvttps_epi32(h)));
/* p = v * (1.0f - s) */
__m128 p = _mm_mul_ps(v, _mm_sub_ps(ones_ps, s));
_______________________________________________
Rawstudio-commit mailing list
[email protected]
http://rawstudio.org/cgi-bin/mailman/listinfo/rawstudio-commit
