[ViewVC] Diff of: cvs/deliantra/server/utils/cfhq2xa.C

Comparing deliantra/server/utils/cfhq2xa.C (file contents):
Revision 1.14 by root, Wed Nov 16 23:42:03 2016 UTC vs.
Revision 1.15 by root, Fri Nov 18 05:53:42 2016 UTC

 # define trY   0x30
 # define trU   0x11
 # define trV   0x10
 # define trA   0x40
+static int32_t
+udiff (uint32_t a, uint32_t b)
+{
+  return a > b ? a - b : b - a;
+}
 static inline pixel lerp (pixel c1, int w1, pixel c2, int w2, pixel c3, int w3, int shift)
 {
 #if 0
   if (!(c1 >> Ashift) & Cmask) w1 = 0;
 static inline bool Diff (pixel w1, pixel w2)
 {
   pixel YUV1 = RGBAtoYUVA (w1);
   pixel YUV2 = RGBAtoYUVA (w2);
-  return ((abs (((YUV1 >> Rshift) & Cmask) - ((YUV2 >> Rshift) & Cmask)) > trY) ||
+  return ((udiff ((YUV1 >> Rshift) & Cmask, (YUV2 >> Rshift) & Cmask) > trY) ||
-          (abs (((YUV1 >> Gshift) & Cmask) - ((YUV2 >> Gshift) & Cmask)) > trU) ||
+          (udiff ((YUV1 >> Gshift) & Cmask, (YUV2 >> Gshift) & Cmask) > trU) ||
-          (abs (((YUV1 >> Bshift) & Cmask) - ((YUV2 >> Bshift) & Cmask)) > trV) ||
+          (udiff ((YUV1 >> Bshift) & Cmask, (YUV2 >> Bshift) & Cmask) > trV) ||
-          (abs (((YUV1 >> Ashift) & Cmask) - ((YUV2 >> Ashift) & Cmask)) > trA) );
+          (udiff ((YUV1 >> Ashift) & Cmask, (YUV2 >> Ashift) & Cmask) > trA) );
 }
 static void
 hq2x_32 (unsigned char *pIn, unsigned char *pOut, int Xres, int Yres, int BpL, bool wrap)
 {

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