simplify ((M^-1)^T)^-1 == M^T

OGRECave · Dec 13, 2016 · 6547947 · 6547947
1 parent e43561c
commit 6547947
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/OgreMain/src/OgreGpuProgramParams.cpp b/OgreMain/src/OgreGpuProgramParams.cpp
@@ -2676,7 +2676,7 @@ namespace Ogre
                     break;
                 case ACT_LIGHT_DIRECTION_OBJECT_SPACE:
                     // We need the inverse of the inverse transpose
-                    source->getInverseTransposeWorldMatrix().inverse().extract3x3Matrix(m3);
+                    source->getTransposeWorldMatrix().extract3x3Matrix(m3);
                     vec3 = m3 * source->getLightDirection(i->data);
                     vec3.normalise();
                     // Set as 4D vector for compatibility
@@ -2696,7 +2696,7 @@ namespace Ogre
 
                 case ACT_LIGHT_DIRECTION_OBJECT_SPACE_ARRAY:
                     // We need the inverse of the inverse transpose
-                    source->getInverseTransposeWorldMatrix().inverse().extract3x3Matrix(m3);
+                    source->getTransposeWorldMatrix().extract3x3Matrix(m3);
                     for (size_t l = 0; l < i->data; ++l)
                     {
                         vec3 = m3 * source->getLightDirection(l);