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  • Hash : 57eded36
    Author : Shahbaz Youssefi
    Date : 2024-04-03T23:02:39

    Vulkan: Fix off-by-one error in compute-based stencil blit
    
    The coordinates used for sampling were calculated based on pixel's
    top-left (integer) coordinates and used with a NEAREST sampler.  This
    resulted in two bugs:
    
    - When X was flipped, the bounds check rejected the first column
    - The sampling could pick the wrong pixel as the on-the-edge coordinates
      could map to either of 4 pixels that share that corner.
    
    This change moves the sampling coordinates to the pixel's center.
    
    Bug: angleproject:8652
    Change-Id: I0b54fa0bad366f52f8e6c17bb0054fa373af8b5c
    Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/5420834
    Auto-Submit: Shahbaz Youssefi <syoussefi@chromium.org>
    Reviewed-by: Geoff Lang <geofflang@chromium.org>
    Commit-Queue: Geoff Lang <geofflang@chromium.org>
    

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