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SwapBuffersRegionNOK: invert rectangles on y axis

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The EGL_NOK_swap_region2 spec states that the rectangles are specified
with a bottom-left origin within a surface coordinate space also with a
bottom left origin, so this patch ensures the rectangles are flipped
before passing them on to dri2_copy_region.

Fixes piglit's egl-nok-swap-region test.

Tested-by: Matt Turner <mattst88@gmail.com>
This commit is contained in:
Robert Bragg 2012-09-18 16:10:03 +01:00 • committed by Matt Turner
parent df4a88ac43
commit 0a523a8820
1 changed files with 1 additions and 2 deletions
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3
src/egl/drivers/dri2/platform_x11.c
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@ -777,10 +777,9 @@ dri2_swap_buffers_region(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw,
if (numRects > (int)ARRAY_SIZE(rectangles))
return dri2_copy_region(drv, disp, draw, dri2_surf->region);
/* FIXME: Invert y here? */
for (i = 0; i < numRects; i++) {
rectangles[i].x = rects[i * 4];
rectangles[i].y = rects[i * 4 + 1];
rectangles[i].y = dri2_surf->base.Height - rects[i * 4 + 1] - rects[i * 4 + 3];
rectangles[i].width = rects[i * 4 + 2];
rectangles[i].height = rects[i * 4 + 3];
}