Implements captures of glGetRenderbufferParameteriv,
glGetBufferParameteriv, and glgetAttachedShader. Fix FrameCapture and
CaptureReplay sample so that it has single-frame capture and replay
capabilities.
Bug: angleproject:4681
Bug: angleproject:4682
Change-Id: I12c25a3857a88f2f40b3c3e8624da1379a950339
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2229069Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Cody Northrop <cnorthrop@google.com>
Commit-Queue: Manh Nguyen <nguyenmh@google.com>
