Jonah Williams 83e59dbe68 [Impeller] fix clip culling with exp canvas. (flutter/engine#54701) ...

Fixes performance problem where image filters break clip culling, and lack of clip culling stops the clear color optimization from firing.

on the current canvas the cull rect computation is slightly incorrect, as we drop it as soon as we get a image filter. With the new canvas, we have the actual render target sizes, so we can correctly cull without it.

After switching to experimental canvas, I will remove the cull rect field from the canvas stack entry - as the clip coverage stack already performs basically the same culling.

This fixes the performance issue on the uncached zoom page transition where we lose the clear color optimization too early.

2024-08-28 23:36:09 +00:00

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src/flutter

[Impeller] fix clip culling with exp canvas. (flutter/engine#54701)

2024-08-28 23:36:09 +00:00