Author: post
Date: 2009-12-31 01:27:23 +0100 (Thu, 31 Dec 2009)
New Revision: 2932
Modified:
branches/rawstudio-ng-color/plugins/lensfun/lensfun-sse2.c
Log:
Lensfun: Add clamping to SSE2 code.
Modified: branches/rawstudio-ng-color/plugins/lensfun/lensfun-sse2.c
===================================================================
--- branches/rawstudio-ng-color/plugins/lensfun/lensfun-sse2.c 2009-12-30
23:41:09 UTC (rev 2931)
+++ branches/rawstudio-ng-color/plugins/lensfun/lensfun-sse2.c 2009-12-31
00:27:23 UTC (rev 2932)
@@ -65,8 +65,7 @@
__m128i x_gt, y_gt;
/* If positions from lensfun is properly clamped this should not be
needed */
- /* Enable, if crashes begin occuring here here */
-#if 0
+ /* Clamping */
x_gt = _mm_cmpgt_epi32(x, _m_w);
y_gt = _mm_cmpgt_epi32(y, _m_h);
@@ -78,11 +77,11 @@
__m128i y_lt = _mm_cmplt_epi32(y, zero);
x = _mm_andnot_si128(x_lt, x);
y = _mm_andnot_si128(y_lt, y);
-#endif
__m128i one = _mm_set1_epi32(1);
__m128i nx = _mm_add_epi32(one, _mm_srai_epi32(x, 8));
__m128i ny = _mm_add_epi32(one, _mm_srai_epi32(y, 8));
+ /* Check that 'next' pixels are in bounds */
_m_w = _mm_srai_epi32(_m_w, 8);
_m_h = _mm_srai_epi32(_m_h, 8);
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