* This is almost completely worthless as it seems at least NV and amdvlk both
actually crash the GPU on this instruction, meaning there's no way to get it
to the shader debugger. But on other drivers like radv, or maybe if this is
fixed in future, this will be useful.
* For this reason it also can't be tested automatically.
* We shouldn't require 'pure virtual' functions in CaptureViewer implementations
in python, so detect when the derived class methods point to the base class
pass-throughs, and skip them in that case.
* Unfortunately the new upcoming debian has made the really poor decision to
actively *delete* the pcre package, breaking any programs depending on it even
at build time. As far as I can see it's still available in most other common
distributions.
* Users could easily build it themselves but would have to install it system
wide for it to be picked up. This kind of dependency absolutely should not be
something the build system has to set up itself but when distributions make
poor choices we have little choice but to adapt somehow.
* This will be optional in many cases but for some situations might be required
when type information is not implicitly available in the descriptor store.
Generally it should always be available unless the descriptor store is being
viewed 'blank' purely from its contents with no other context.
* Scalar layout is required for vectors to straddle 16-byte boundaries but this
may not be detected if they are naturally aligned within an otherwise mis-
aligned struct.
if members.size() == 0
rows * columns must be between 1 and 15
type must not be Struct
if members.size() > 0
type must be Struct or Unknown or ConstantBlock
rows must be 0
columns must be 0
then recurse and check construction of each element of members array
Step Forwards: first appearance of a variable must have "before" = {}
Step Forwards: not-first appearance of a variable "before" must equal currently known value
Step Backwards: first appearance of a variable must have "after" = {}
Step Backwards: not-first appearance of a variable "after" must equal currently known value
* For very large shader symbol stores especially those on network drives, the
bad behaviour that PIX has to recursively search all possible subdirectories
and enumerate all files can be really slow. Most of the time a file is
identified by its hash filename and looked up directly - if that isn't a hit,
in many cases users would rather a fast exit to having no symbols.
baldurk