When processing a morphology filter on the GPU, pass the processed texture, not the original source texture.
When processing a morphology filter on the GPU, pass the processed texture,
not the original source texture.

Review URL:  https://codereview.appspot.com/6587057/



git-svn-id: e8541e15acce502a64c929015570ad1648e548cd@5766 2bbb7eff-a529-9590-31e7-b0007b416f81

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