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Author: abe
Date: Thu May 26 16:28:00 2005
New Revision: 352

Modified:
   branches/itanium2/Model/Groups/kdtree.cc
   branches/itanium2/Model/Groups/kdtree.h
Log:
endian swap

Modified: branches/itanium2/Model/Groups/kdtree.cc
==============================================================================
--- branches/itanium2/Model/Groups/kdtree.cc    (original)
+++ branches/itanium2/Model/Groups/kdtree.cc    Thu May 26 16:28:00 2005
@@ -183,19 +183,22 @@
        // Specify the root node loaded from the file.
        rootNode = (KDTreeNode*)buffer;
 
-       rootNode->endian_swap();
-       
        // Get the bounding box from the file.
        AABox3f bboxf = *(AABox3f*)((char*)buffer + fileSize - 
sizeof(AABox3f));
-       
-       bboxf.min[0] = endian_swap( bboxf.min[0] );
-       bboxf.min[1] = endian_swap( bboxf.min[1] );
-       bboxf.min[2] = endian_swap( bboxf.min[2] );
-       
-       bboxf.max[0] = endian_swap( bboxf.max[0] );
-       bboxf.max[1] = endian_swap( bboxf.max[1] );
-       bboxf.max[2] = endian_swap( bboxf.max[2] );
-       
+
+       if (is_big_endian()) {
+
+               rootNode->endian_swap();
+               
+               bboxf.min[0] = endian_swap( bboxf.min[0] );
+               bboxf.min[1] = endian_swap( bboxf.min[1] );
+               bboxf.min[2] = endian_swap( bboxf.min[2] );
+               
+               bboxf.max[0] = endian_swap( bboxf.max[0] );
+               bboxf.max[1] = endian_swap( bboxf.max[1] );
+               bboxf.max[2] = endian_swap( bboxf.max[2] );
+               
+       }
        bbox = BBox( bboxf.min, bboxf.max );
        
        
/////////////////////////////////////////////////////////////////////////////
@@ -225,8 +228,10 @@
        triIndices = indices;
 
        // Swap the indicies.
-       for (int i=0;i<nInt;++i) {
-               (*indices)[i] = endian_swap( (*indices)[i] );
+       if (is_big_endian()) {
+               for (int i=0;i<nInt;++i) {
+                       (*indices)[i] = endian_swap( (*indices)[i] );
+               }
        }
        
        // create material

Modified: branches/itanium2/Model/Groups/kdtree.h
==============================================================================
--- branches/itanium2/Model/Groups/kdtree.h     (original)
+++ branches/itanium2/Model/Groups/kdtree.h     Thu May 26 16:28:00 2005
@@ -88,6 +88,17 @@
                                
                                return out;
                        }
+                       
+               // Check the endianness of this machine.
+               inline bool is_big_endian() {
+                       unsigned int x = 0x00112233;
+                       
+                       char *p = (char *)&x;
+                       
+                       printf(">>%X\n",p[0]);
+                       
+                       return (p[0] == 0x00);
+               }
                
                
///////////////////////////////////////////////////////////////////////////
                // KDTREE INTERNAL NODE

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• [MANTA] r352 - branches/itanium2/Model/Groups, abe, 05/26/2005

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