[GL] Planar Reflections had inverted Y if rendered to a RenderTexture

Thanks Crystal Hammer for the repro!
OGRECave · Mar 10, 2024 · d7b95f4 · d7b95f4
1 parent 2983b02
commit d7b95f4
Showing 1 changed file with 5 additions and 2 deletions.
diff --git a/Components/PlanarReflections/src/OgrePlanarReflections.cpp b/Components/PlanarReflections/src/OgrePlanarReflections.cpp
@@ -887,8 +887,11 @@ namespace Ogre
         memset( passBufferPtr, 0, (mMaxActiveActors - mActiveActors.size()) * 4u * sizeof(float) );
         passBufferPtr += (mMaxActiveActors - mActiveActors.size()) * 4u;
 
-        Matrix4 reflProjMat = PROJECTIONCLIPSPACE2DTOIMAGESPACE_PERSPECTIVE * projectionMatrix;
-        for( size_t i=0; i<16; ++i )
+        // We call getProjectionMatrixWithRSDepth directly because
+        // it must NOT account for requiresTextureFlipping.
+        Matrix4 reflProjMat =
+            PROJECTIONCLIPSPACE2DTOIMAGESPACE_PERSPECTIVE * camera->getProjectionMatrixWithRSDepth();
+        for( size_t i = 0; i < 16; ++i )
             *passBufferPtr++ = (float)reflProjMat[0][i];
 
         *passBufferPtr++ = static_cast<float>( mInvMaxDistance );