Author: post
Date: 2010-01-23 18:49:34 +0100 (Sat, 23 Jan 2010)
New Revision: 3062
Modified:
branches/rawstudio-ng-color/plugins/colorspace-transform/colorspace_transform_sse2.c
Log:
Reduce pow precision slightly - should not have any significant influence on 8
bit output.
Modified:
branches/rawstudio-ng-color/plugins/colorspace-transform/colorspace_transform_sse2.c
===================================================================
---
branches/rawstudio-ng-color/plugins/colorspace-transform/colorspace_transform_sse2.c
2010-01-23 17:48:32 UTC (rev 3061)
+++
branches/rawstudio-ng-color/plugins/colorspace-transform/colorspace_transform_sse2.c
2010-01-23 17:49:34 UTC (rev 3062)
@@ -50,7 +50,7 @@
/* SSE2 Polynomial pow function from Mesa3d (MIT License) */
-#define EXP_POLY_DEGREE 3
+#define EXP_POLY_DEGREE 2
#define POLY0(x, c0) _mm_set1_ps(c0)
#define POLY1(x, c0, c1) _mm_add_ps(_mm_mul_ps(POLY0(x, c1), x),
_mm_set1_ps(c0))
@@ -94,7 +94,7 @@
}
-#define LOG_POLY_DEGREE 5
+#define LOG_POLY_DEGREE 4
static inline __m128
log2f4(__m128 x)
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