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Sign upText transformation fixes #497
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… to text rendering.
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@bors-servo r+ |
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Oct 30, 2016
Text transformation fixes Fixes #427 well, mostly... Looks like the transformed clips (#498) need to be implemented for this to work fully correct. Also adds a bit of comments to GLSL code to understand what's going on (please check if I misunderstood stuff and documented it wrong!). The errors spotted: 1. `layer.screen_vertices` was fetched with wrong indices 2. `untransform` would use undefined value of `t` if the layer plane is perpendicular to the view 3. text vertex shaders were missing a division by `vi.local_pos.z` for the layer coordinates 4. `prim.local_rect` was used for the text_run local rectangle, instead of `local_rect` <!-- 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/497) <!-- Reviewable:end -->
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kvark commentedOct 28, 2016
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edited
Fixes #427 well, mostly...
Looks like the transformed clips (#498) need to be implemented for this to work fully correct.
Also adds a bit of comments to GLSL code to understand what's going on (please check if I misunderstood stuff and documented it wrong!).
The errors spotted:
layer.screen_verticeswas fetched with wrong indicesuntransformwould use undefined value oftif the layer plane is perpendicular to the viewvi.local_pos.zfor the layer coordinatesprim.local_rectwas used for the text_run local rectangle, instead oflocal_rectThis change is