OpenGL vs DirectX Texture Management

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This time I monitored my page file useage during the demo. In both cases the starting page file size was 300mb. During the test I watched the page file size grow...

DirectX Mode: Never went over 345mb.
OpenGL Mode: 800mb+ at the point I stopped the app.

So....it would seem that while we only have created 1 TImage in the code, internally, multiple surfaces are being made and "t1" is pointing to the most recent surface created.