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[Impeller] Make Metal layers readable#41085
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bdero merged 1 commit intoflutter:mainfrom Apr 11, 2023
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chinmaygarde
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If this assumption is changing now, we should make the Vulkan backend do similar things as well. See |
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Removes the "final blit" for Metal because #41085 allows us to read from the onscreen texture. We can't do this trick when running the Vulkan backend right now because it doesn't have `SupportsReadFromResolve` yet, which means we need to toggle between two textures.
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Resolves flutter/flutter#124612. Doing this would also allow us to remove the final blit on iOS when advanced blends/backdrop filters are present (all of the facilities would remain in place for GLES + Vulkan though).
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Removes the "final blit" for Metal because flutter#41085 allows us to read from the onscreen texture. We can't do this trick when running the Vulkan backend right now because it doesn't have `SupportsReadFromResolve` yet, which means we need to toggle between two textures.
bdero
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Resolves flutter/flutter#124612. Doing this would also allow us to remove the final blit on iOS when advanced blends/backdrop filters are present (all of the facilities would remain in place for GLES + Vulkan though). (cherry picked from commit ef089a6)
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Resolves flutter/flutter#124612.
Doing this would also allow us to remove the final blit on iOS when advanced blends/backdrop filters are present (all of the facilities would remain in place for GLES + Vulkan though).