* Still missing several features:
- solid shading of 'secondary' data
- highlighting of vertices/faces/supporting faces
- helpers like axis markers or frustum
- post VS data and re-projection
* So RenderMesh doesn't pick up anything implicitly from the current
event, log, pipeline state etc - everything it needs is explicitly
provided by the config parameters (note this might include a buffer
generated by postvs data fetching, but the implementation now doesn't
need to care or treat it as a special case.
* This will allow shifting to RenderMesh being run locally just by
the UI specifying the buffer and simple vertex specification, rather
than by relying on any local log properties (or replaying the log).
* The reasoning behind this change is that it becomes much simpler to
implement, rather than having to modify the draw to do what we want,
we just do an entirely custom draw based on a few properties - similar
to the texture rendering. This will help e.g. for writing a GL
implementation.
* The second benefit is that we can just transfer the buffer contents
across the network when replaying remotely, so mesh rendering can be
implemented even for remote replay - the last unimplemented feature.
* It could also be used similar to the image viewer in future, to
display mesh files.
* The transform feedback is placed on the geometry shader tab the same as
in D3D11. It doesn't merit its own whole tab and that seemed like the
best place to put it (last processing stage before rasterization).
* To aid understanding, further stages are marked disabled if rasterizer
discard is on, and if no geometry shader is bound the stage is renamed.
* This has been bugging me for ages, it's not a problem typically for users
as the config would be saved on shutdown, but if you're debugging
renderdoc and you kill the process (by stopping debugging) after loading
a log but before closing the program, the recent file wouldn't be saved!
* When binding an empty texture, sanitise the parameters so we don't
pass invalid enums for access/format.
* When fetching, actually use the indexed Get functions to get the right
slot. Ooops :S.
baldurk