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Author: boulos
Date: Mon Oct 15 12:37:08 2007
New Revision: 1777

Modified:
   trunk/Model/Textures/ImageTexture.h
Log:
Model/Textures/ImageTexture.h

 Adding an explicit check for whether or not we need to actually do a
 %= resulting in decent perf benefit when we don't.


Modified: trunk/Model/Textures/ImageTexture.h
==============================================================================
--- trunk/Model/Textures/ImageTexture.h (original)
+++ trunk/Model/Textures/ImageTexture.h Mon Oct 15 12:37:08 2007
@@ -79,7 +79,7 @@
   // that.
   ImageTexture<Color>* LoadColorImageTexture( const std::string& file_name,
                                               std::ostream* stream = 0 );
-  
+
   // Whatever type ValueType ends up being, it needs to have
   // ValueType::ScalarType defined.  I'm not sure what to do for
   // things that aren't.  If the occasion arrises such that you need
@@ -153,8 +153,10 @@
           // interpolation.
           weight_high = -weight_high;
         }
-        low  %= size;
-        high %= size;
+        if (low >= size)
+          low  %= size;
+        if (high >= size)
+          high %= size;
         break;
       case Clamp:
         if (val < 0) {
@@ -317,7 +319,7 @@
       break;
     }
   }
-  
+
 } // end namespace Manta
 
 #endif // Manta_Model_ImageTexture_h

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• [Manta] r1777 - trunk/Model/Textures, boulos, 10/15/2007

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