Make tessellator properly handle 2d triangles (fix #36024)

(cherry picked from commit 800c54f)
qgis · Apr 29, 2020 · 8dadfa4 · 8dadfa4
1 parent 4481380
commit 8dadfa4
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/core/qgstessellator.cpp b/src/core/qgstessellator.cpp
@@ -439,7 +439,7 @@ void QgsTessellator::addPolygon( const QgsPolygon &polygon, float extrusionHeigh
     const double *zData = !mNoZ ? exterior->zData() : nullptr;
     for ( int i = 0; i < 3; i++ )
     {
-      mData << *xData++ - mOriginX << ( mNoZ ? 0 : *zData++ ) << - *yData++ + mOriginY;
+      mData << *xData++ - mOriginX << ( !zData ? 0 : *zData++ ) << - *yData++ + mOriginY;
       if ( mAddNormals )
         mData << pNormal.x() << pNormal.z() << - pNormal.y();
     }