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Zack Galbreath authored
Apparently this test has been failing on dash3 since October. This problem is ultimately due to the fact that we've enabled the depth buffer within vtkOpenGLContextDevice3D::Begin(). This commit changes this behavior, so we now enable the depth buffer at the beginning of each 3D context "Draw" method, and then disable it at the end. While investigating this problem, I realized that we copied code from vtkOpenGLContextDevice2D and pasted it into the new 3D device class. It turns out that this is unnecessary, so this commit removes the copied & pasted code from vtkOpenGLContextDevice3D. Change-Id: If3ec870cedc4eb853a9a8cebba28663ef7137b3f
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