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Sign upRefactor TextRenderBox #485
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…ox's style handle font size
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burg
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May 27, 2013
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LGTM. r+ |
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jdm
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May 27, 2013
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r+ |
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saw approval from jdm |
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merging oncemoreification/servo/refactor_TextRenderBox = 5c8c776 into auto |
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fast-forwarding master to auto = 8f33dfa |
bors-servo
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…r=jdm This removes the TextBoxData struct and places its properties directly on the TextRenderBox. It also removes the font_size property from RenderBox's, in the thinking that this should be (and is) managed by stylers.
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glennw
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Add framework for dynamic/cache render tasks, and use for box shadows. This adds the framework for tiles and primitives to add dependent render tasks. The proof of concept in this patch uses them to speed up box shadow rendering, but the dynamic render tasks can be used for many things in the future. For example, we can use this system to render rotated clip masks, or cache text runs to a texture. The box shadows are rendered by adding a child task that draws the upper left corner of a box shadow. The primitive shader for box shadows then applies this rendered patch over the box shadow by clamping and mirroring the texture coordinates in the fragment shader. Dynamic render tasks are added to passes via a cache key that is defined based on the type of item being cached. This means that dynamic render tasks are du-duplicated during allocation and assignment to render passes and targets. This means that if different tiles require the same cache primitive, it will only get rendered once. It also means that if two primitive exist that require the same resource type (e.g. two box shadows with different colors but same size and blur radius) then the cache item will only be drawn once to the child render target. With this change, GPU time on transparent_rects demo drops from 16ms down to 9ms on my test setup. <!-- Reviewable:start --> --- This change is [<img src="https://reviewable.io/review_button.svg" height="34" align="absmiddle" alt="Reviewable"/>](https://reviewable.io/reviews/servo/webrender/485) <!-- Reviewable:end -->
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jjjjw commentedMay 26, 2013
This removes the TextBoxData struct and places its properties directly on the TextRenderBox.
It also removes the font_size property from RenderBox's, in the thinking that this should be (and is) managed by stylers.