Revert "Untangle dependency cycle in sksl dehydration"
This reverts commit a1ed0dc9f81255351eefe999975408f7afb32cfd.
Reason for revert: Bots will need some guidance to ingest this CL
Original change's description:
> Untangle dependency cycle in sksl dehydration
>
> NOTE: If you have any out directories with skia_compile_processors
> enabled, you will likely need to run `gn clean <dir>`
>
> Explanation: The sksl standalone compiler is used to convert the raw
> (text) SkSL pre-includes into a "dehydrated" binary format. It also
> (previously) depended on those files, as they were #included and used,
> unless a special #define was changed. This created a dependency cycle
> that we hid from GN (by lying about the outputs of the dehydrate step).
> As a result, builds would never reach steady-state, because the compiler
> would be rebuilt (due to the newer dehydrated files), and then the
> dehydrated files would be rebuilt (due to the newer compiler).
>
> This CL changes the logic so that the standalone compiler always uses
> the textual pre-includes, and no longer depends on the dehydrated binary
> files. Thus, to make any kind of change to the dehydrated files (whether
> due to pre-include changes, or the encoding format itself), you just
> need skia_compile_processors enabled. The dependencies are now honestly
> communicated to GN, and we reach steady state after one build.
>
> The NOTE above is because GN/ninja cache the dependencies of each
> target, and will still think that the SkSLCompiler.obj linked into the
> standalone compiler depends on the dehydrated files, at least until one
> successful build, when it will realize that's no longer true.
>
> Bug: skia:10571
> Change-Id: I246360cec387b17d017805ed42ab6424329e32e7
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/308760
> Reviewed-by: Mike Klein <mtklein@google.com>
> Reviewed-by: John Stiles <johnstiles@google.com>
> Commit-Queue: Brian Osman <brianosman@google.com>
TBR=mtklein@google.com,brianosman@google.com,ethannicholas@google.com,johnstiles@google.com
Change-Id: Id0f3f6e18474f7531b8531cfa481031c26b88d51
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:10571
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/308802
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
3 files changed