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Commit 0e65e6c2 authored by Dan Stoza's avatar Dan Stoza
Browse files

libgui: Fix surface damage on rotated buffers 

Flips the width and height when the buffer comes in with a 90 degree
rotation so that performing the Y-flip from GL works correctly.

Bug: 20761426
Change-Id: I41c9edc8549c6cbdb534277b996ff20c59034582
parent 20828e63

libs/gui/Surface.cpp

+6 −2
Original line number Diff line number Diff line
@@ -335,10 +335,14 @@ int Surface::queueBuffer(android_native_buffer_t* buffer, int fenceFd) { 
        // the origin being in the bottom-left corner. Here we flip to the

        // convention that the rest of the system uses (top-left corner) by

        // subtracting all top/bottom coordinates from the buffer height.

        int height = buffer->height;

        if ((mTransform ^ mStickyTransform) & NATIVE_WINDOW_TRANSFORM_ROT_90) {

            height = buffer->width;

        }

        Region flippedRegion;

        for (auto rect : mDirtyRegion) {

            auto top = buffer->height - rect.bottom;

            auto bottom = buffer->height - rect.top;

            auto top = height - rect.bottom;

            auto bottom = height - rect.top;

            Rect flippedRect{rect.left, top, rect.right, bottom};

            flippedRegion.orSelf(flippedRect);

        }