forked from mirrors/gecko-dev
7a0189e02b
During display list and scene building, there are two coordinate remapping steps that occur: 1) From stacking context coords -> reference frame relative coords 2) From pre-scrolled coords -> removed external scrolling offsets These were previously handled in one place, however we want to split these up so that we can apply snapping _after_ step 1 but prior to step 2. This will allow us to have fractional external scroll offsets that don't affect snapping. These will be snapped later on during frame build after applying any (possibly fractional APZ scroll offsets). This is a cheap operation during frame building as we only need to snap and modify the transform matrices, not individual primitives. This patch should have no functional changes, it's prep work for the changes referenced above. It does move all of step 1 to be done during DL building in the content process, and all of step 2 to be done during scene building in the GPU process. In future, if/when we resolve the issues we have with reliance on cross-iframe knowledge for fractional snapping, we can move step 2 (including snapping) in to the content process as well. Further, as part of the DL bypass work, we will need to remap coord spaces during DL building in a differeny way, which this simplifies. Differential Revision: https://phabricator.services.mozilla.com/D208427 |
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| angle | ||
| cairo | ||
| config | ||
| docs | ||
| gl | ||
| graphite2 | ||
| harfbuzz | ||
| ipc | ||
| layers | ||
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| qcms | ||
| skia | ||
| src | ||
| tests | ||
| thebes | ||
| vr | ||
| webrender_bindings | ||
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| wr | ||
| ycbcr | ||
| metrics.yaml | ||
| moz.build | ||