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通常 Re: 最新版の修正情報で気になったもの

msg# 1.26
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前の投稿 - 次の投稿 | 親投稿 - 子投稿なし | 投稿日時 2013/12/14 10:23
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気になったもの:
SHA-1: ce893552c359d11cfa93709f239a3c93f4cdb244
* Image cache rewrite to using generic movie cache
Summary:
Behaves very much the same as cache for Movie Clip datablock:
- Image now have `MovieCache *cache` field which replaced
　legacy `ListBase ibufs`.

　This allows image datablock to easily keep of image
　buffers which are owned by itself. This field isn't
　saved to the file and getting restored on undo steps.

　However, cache limit is global for movies, sequences
　and image datablocks now. So overall cached image buffers
　size will not go above cache limit size in user
　preferences.

- Image buffers which are marked as BITMAPDIRTY will never
　be freed from the cache.

- Added utility function to iterate over image buffers
　saved in movie cache.

- Movie cache cleanup check callback now have ImBuf argument
　which can be used in a condition of cleanup.

- Added some utility functions which replaces legacy ibufs
　iterations with image cache iteration which happens from
　inside a lock.

- Fixed `image_mem_size()` which was only counting one of
　the buffers if both float and byte buffer present.

Additional notes:

- `BKE_image_get_first_ibuf()` is rather stupid, but direct
　access to ibufs->first was also the same stupid idea.

　Would consider avoid this function is another project.

- There are some places which doesn't look threadsafe, but
　they already were not so much threadsafe anyway before.

　So think not a big deal with solving this later.

Finally solves infinite memory usage by image sequences! :)


SHA-1: 5a91df32713b7ad9be6befa7124b31890063d91b
* Implement GPU-side dither

Summary:
Uses some magic pseudo-random which is actually a
texture coordinate hashing function.

TODOs:
- Dither noise is the same for all the frames.
- It's different from Floyd's dither we've been
　using before.
- Currently CPU and GPU dithering used different
　implementation. Ideally we need to use the same
　dither in CPU.

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