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[CP][Impeller] ensure that OpenGL "flipped" textures do not leak via texture readback. (#163501) - #163667
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auto-submit[bot] merged 6 commits intoFeb 26, 2025
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…ure readback. (flutter#163501) Fixesflutter#163315Fixesflutter#163521Fixesflutter#142641 OpenGL has an inverted coordinate system (bottom left is zero) compared to Metal/Vulkan (top left is zero). We handle this by rendering things upside down on OpenGL. Unfortunately this can leak out of the renderer via readback (toImage), so we need to make sure to undo the inversion. This is not performed for the "TextureCoordinateSystem::kUploadFromHost" state as that indicates the texture is already "right side up".
jtmcdole
approved these changes
Feb 19, 2025
jonahwilliams
commented
Feb 20, 2025
ContributorAuthor
Ah I used an API that is not in the release branch. Fixing. |
justinmc
commented
Feb 25, 2025
Contributor
The presubmits were fixed in #164050. Pushing a merge commit to see if this PR will pass now. |
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…eak via texture readback. (#163501) (flutter/flutter#163667)
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…eak via texture readback. (#163501) (flutter/flutter#163667)
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…texture readback. (flutter#163501) (flutter#163667) Fixesflutter#163315Fixesflutter#163521Fixesflutter#142641 OpenGL has an inverted coordinate system (bottom left is zero) compared to Metal/Vulkan (top left is zero). We handle this by rendering things upside down on OpenGL. Unfortunately this can leak out of the renderer via readback (toImage), so we need to make sure to undo the inversion. This is not performed for the "TextureCoordinateSystem::kUploadFromHost" state as that indicates the texture is already "right side up".
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Fixes#163315Fixes#163521Fixes#142641
OpenGL has an inverted coordinate system (bottom left is zero) compared to Metal/Vulkan (top left is zero). We handle this by rendering things upside down on OpenGL. Unfortunately this can leak out of the renderer via readback (toImage), so we need to make sure to undo the inversion.
This is not performed for the "TextureCoordinateSystem::kUploadFromHost" state as that indicates the texture is already "right side up".