Separate fbo resize logic from creation.
Fix a vertexdec crash from the ge debugger.
Detect staggered/interleaved rendering.

Not sure why you'd do this, maybe to simultaneously render?  Should help
the Silent Hill games which seem to do this.
Avoid displaying a wrong-format framebuf.
Verify fbo exists when copying depth.

Should fix #5343 based on stack trace.
Merge pull request #6245 from unknownbrackets/gpu-minor

Support displaying from an offset in a framebuf