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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
This commit is contained in:
Dan Stoza 2015-05-26 13:22:27 -07:00
parent 20828e633d
commit 0e65e6c283
1 changed files with 6 additions and 2 deletions
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8
libs/gui/Surface.cpp
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@ -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);
}