Compute row pitch using the size of the input pixel, not the format pixel. For formats that can be loaded with data that has a different size pixel than the internal format (UNSIGNED_INT -> GL_DEPTH_COMPONENT_24) the row length would be computed as rowLength * 3 which is incorrect. BUG=angleproject:1095 Change-Id: I0f60a3bb9bb387d475ddda1389a3b4b6f4973922 Reviewed-on: https://chromium-review.googlesource.com/360214 Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Geoff Lang <geofflang@chromium.org>