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[Linux] Fix layer offset when compositing with glBlitFramebuffer - #196189
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The source rectangle was offset, the destination ignored the offset in its end coordinates, and the y axis wasn't flipped to OpenGL's bottom-left origin.
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This pull request adjusts the framebuffer blitting logic in the Linux OpenGL compositor to correctly map Flutter's top-left origin coordinates to OpenGL's bottom-left origin coordinates, and adds a unit test to verify this offset mapping. Feedback on the changes suggests using explicit static_cast and std::round when converting the double layer offsets and sizes to GLint to avoid implicit narrowing conversions and prevent subpixel rendering artifacts.
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Who doesn't love an inverse coordinate system!
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autosubmit label was removed for flutter/flutter/196189, because - The status or check suite Mac_arm64_verify_binaries has failed. Please fix the issues identified (or deflake) before re-applying this label. |
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flutter/flutter@b98afb5...9c427b5 2026-11-12 [email protected] Roll Skia from d67d0f22e3ec to 9aa2513a4ac9 (2 revisions) (flutter/flutter#196429) 2026-11-12 [email protected] [flutter_tools] Move CpuArch to flutter_tools_core and define HostPlatform by osName and cpuArch (flutter/flutter#195841) 2026-11-12 [email protected] Roll Skia from 23e7e63789b8 to d67d0f22e3ec (2 revisions) (flutter/flutter#196424) 2026-11-12 [email protected] Uber compactify (flutter/flutter#196392) 2026-11-12 [email protected] Roll Skia from 3d7e335da165 to 23e7e63789b8 (12 revisions) (flutter/flutter#196422) 2026-11-12 [email protected] Roll Dart SDK from 13af329ea4f2 to e5add7a25b32 (1 revision) (flutter/flutter#196413) 2026-11-12 [email protected] Don't terminate the shared EGL display when an engine is disposed (flutter/flutter#194520) 2026-11-11 [email protected] Adds manifest flag to turn on SDFs for Android. (flutter/flutter#196056) 2026-11-11 [email protected] Remove bringup from Linux_pixel_7pro integration_ui_keyboard_inset_jump (flutter/flutter#196334) 2026-11-11 [email protected] Uses system default locale for text rendering when preferred locale isn't supported (flutter/flutter#195997) 2026-11-11 [email protected] [android]: prewarms shaders when the context is created (flutter/flutter#196069) 2026-11-11 [email protected] iOS: Recomposite platform views only if their parameters change (flutter/flutter#196287) 2026-11-11 [email protected] [flutter_tools] Forward encoding in ErrorHandlingFile.readAsStringSync (flutter/flutter#196136) 2026-11-11 [email protected] Roll Skia from b89c24bbab8c to 3d7e335da165 (8 revisions) (flutter/flutter#196390) 2026-11-11 [email protected] Add Flutter Gardener instructions on how to disable a test (flutter/flutter#196312) 2026-11-11 [email protected] [Impeller] Enable malioc analysis for framebuffer_blend shaders (flutter/flutter#196343) 2026-11-11 [email protected] [flutter_tools] Migrate general.shard Android, asset, and build tests off globals (flutter/flutter#196125) 2026-11-11 [email protected] Roll Dart SDK from 8f15c4ca2d41 to 13af329ea4f2 (1 revision) (flutter/flutter#196386) 2026-11-11 [email protected] [Impeller] Do not clamp the local coverage limit to the root render target (flutter/flutter#195860) 2026-11-11 [email protected] [Impeller] Use separate uniform buffers on VMware SVGA3D (flutter/flutter#196022) 2026-11-11 [email protected] [flutter_tools] Introduce AndroidSdkProvider for lazy native_assets SDK lookup (flutter/flutter#196122) 2026-11-11 [email protected] Moves linux to ThinLTO. (flutter/flutter#196314) 2026-11-11 [email protected] [flutter_tools] Migrate bin/fuchsia_tester.dart off globals and runInContext (flutter/flutter#196074) 2026-11-11 [email protected] Changes the tolerances for frame_rate_main_test.dart. (flutter/flutter#196304) 2026-11-11 [email protected] Roll Packages from 08faf64 to 653628e (16 revisions) (flutter/flutter#196381) 2026-11-11 [email protected] Allow SliverCrossAxisGroup children to lay out with zero cross-axis extent instead of asserting (flutter/flutter#191287) 2026-11-11 [email protected] Roll Skia from cc4c54f752ba to b89c24bbab8c (4 revisions) (flutter/flutter#196375) 2026-11-11 [email protected] [Linux] Fix layer offset when compositing with glBlitFramebuffer (flutter/flutter#196189) 2026-11-11 [email protected] [flutter_tools] Inject CrashReportSender into SwiftPM migration (flutter/flutter#196315) If this roll has caused a breakage, revert this CL and set the roller to dry run mode using the controls here: https://autoroll.skia.org/r/flutter-packages Please CC [email protected],[email protected] on the revert to ensure that a human is aware of the problem. To file a bug in Packages: https://github.com/flutter/flutter/issues/new/choose To report a problem with the AutoRoller itself, please file a bug: https://issues.skia.org/issues/new?component=1389291&template=1850622 Documentation for the AutoRoller is here: https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md
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The source rectangle was offset, the destination ignored the offset in its end coordinates, and the y axis wasn't flipped to OpenGL's bottom-left origin.