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wgpu/wgpu-native
bors[bot] a667d50d01 Merge #226
226: Tracking Rewrite r=grovesNL a=kvark

Fixes #44

The idea is to support independent tracking of sub-resources. Today, this is needed for textures, which can have individual layers and mipmap levels in different states at a time. Tomorrow, this will be needed for buffer sub-ranges.

The intent to hack it in grew into a complete rewrite of the tracker... The new approach is cleaner in a few places (e.g. `TrackPermit` is gone), but the implementation is obviously more complex. I tried to separate the levels from each other (see `ResourceState` and `RangedStates`) to fight complexity, but it requires a whole lot of testing infrastructure to be solid.

Also regresses #216 a bit, cc @arashikou : tracker is a relatively complex structure. I somehow doubt it's useful to look at it in debug spew. We may need to implement `Debug` manually for it before re-adding `Debug` derives on passes and command buffers.

TODO:
  - [x] documentation of tracking types
  - [x] unit tests for tracking logic
  - [x] actual testing with existing apps, ensure no regressions
  - [x] write a mipmap generation example

Co-authored-by: Dzmitry Malyshau <kvarkus@gmail.com>
2019-06-16 14:53:26 +00:00
..
2019-06-16 12:31:07 +10:00