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Commit aa42c9af authored by Chet Haase's avatar Chet Haase
Browse files

Correctly adjust clip regions that lie offscreen 

We were clamping the x/y location of the scissor to 0,0, but not adjusting
the width/height appropriately. This fix adjusts width/height and also clamps
them to 0 to correctly clip out offscreen operations.

Issue #7221524 Top left and top right portions of the screen blanks out after some time

Change-Id: I47f23336ea612409ed86652b9a68e272819ef00e
parent d07fa6e0

libs/hwui/Caches.cpp

+14 −3
Original line number Diff line number Diff line
@@ -399,9 +399,20 @@ bool Caches::setScissor(GLint x, GLint y, GLint width, GLint height) { 
    if (scissorEnabled && (x != mScissorX || y != mScissorY ||

            width != mScissorWidth || height != mScissorHeight)) {



        if (x < 0) x = 0;

        if (y < 0) y = 0;



        if (x < 0) {

            width += x;

            x = 0;

        }

        if (y < 0) {

            height += y;

            y = 0;

        }

        if (width < 0) {

            width = 0;

        }

        if (height < 0) {

            height = 0;

        }

        glScissor(x, y, width, height);



        mScissorX = x;