depthstencil-render-miplevels: Refactor how texture is displayed

This affects only non-auto mode.

TODO: Comment new func.
TODO: Commit message.
Signed-off-by: Chad Versace <chad.versace@linux.intel.com>
depthstencil-render-miplevels: Use shaders

TODO: commit message

Signed-off-by: Chad Versace <chad.versace@linux.intel.com>
wip! depthstencil-render-miplevels: Change layout, dynamically resize to window

TODO: commit message