I've been using my apitrace-based shader-db so far, but it's slow
(apitrace decompression), intrusive (apitrace windows spamming the
screen), and doesn't have much coverage. The original shader-db provides
a lot more coverage and compiles faster, at the expense of not having the
actual runtime variant key. As v3d has a lot less runtime variation than
vc4 did, this tradeoff makes more sense.
A few of the upcoming changes would make the V3D_DEBUG=cl output less
readable, so let's make proper CLIF file production be under a separate
V3D_DEBUG=clif flag.
Unlike vc4, where the compiler and gallium driver live together, for vc5
the compiler will live up in the shared broadcom directory, and need
access to the debug flags. Define a set of debug flags and helpers there,
so it can be shared between compiler, vc5, and vulkan.
Eric Anholt