SW/Rasterizer: Use RAS1_IREF::getTexCoord and getTexMap

Source/Core/VideoBackends/Software/Rasterizer.cpp

@@ -286,13 +286,10 @@ static void BuildBlock(s32 blockX, s32 blockY)
     }
   }
 
-  u32 indref = bpmem.tevindref.hex;
   for (unsigned int i = 0; i < bpmem.genMode.numindstages; i++)
   {
-    u32 texmap = indref & 7;
-    indref >>= 3;
-    u32 texcoord = indref & 7;
-    indref >>= 3;
+    u32 texmap = bpmem.tevindref.getTexMap(i);
+    u32 texcoord = bpmem.tevindref.getTexCoord(i);
 
     CalculateLOD(&rasterBlock.IndirectLod[i], &rasterBlock.IndirectLinear[i], texmap, texcoord);
   }