Cache element textures per style context stack #1337
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performance
Improving speed and memory usage
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maxkfranz
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Jul 4, 2018
…texture cache invalidations - N.b.: Some further minor changes for performance improvements are marked with "TODO" - Don't require parallel edges iteration in `eles.boundingBox()` re. rendered style recalculation - Shift the cached bounding box on node position changes -- rather than complete invalidation - Simplify the rendering `notify()` function - Simplify batching code - Refactoring of control point calculations - Simplify rendered style queuing to do traversals only on ticks - Make the stylesheet more minimalistic - Ensure that the element texture cache is not invalidated when the style hash is unchanged - Style-originating triggers are organised per property Ref: #1881 #2027 #2145 #1337
maxkfranz
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Sep 6, 2018
…. Squash merge label-texture feature branch: - Parameterise the element texture cache with the key lookup and drawing functions. This is currently used for element bodies and element labels. It could also be applied to edge arrows. - Store separate bounding boxes for the labels, element bodies, and edge arrows. These bounds are necessary for using the element texture caches. - Update the cached bounds shift strategy to take into account the sub-bounds. Update the shift a bit more lazily so it's less ops per shift --- and only shift the individual values once per n-miss-1-get cycle. - Caches within a texture are recoverable as long as the texture is not retired. This reduces memory usage and increases execution speed. - Fixes `ElementTextureCacheLookup` diffs. - Updates to `ele.boundingBox()` docs. - Increase the levels at which the element texture cache can operate to try to get more hits. Refs: - Cache element textures per style context stack #1337 - Cache label textures separately from element textures #1270 - Cache edge arrow textures separately #1616
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Caching element textures per context stack for style means that if there are lots of elements of the same style, then those elements share a single texture. This would improve the painting time for nodes on most graphs -- where there are a lot of nodes of the same style and only the label is different.
Depends on #1270, #2027
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