On Fri, Dec 11, 2015 at 2:41 PM, Anuj Phogat <anuj.pho...@gmail.com> wrote:
> From OpenGL 4.0 spec, section 4.3.2 "Copying Pixels":
> "The pixels corresponding to these buffers are copied from the source
> rectangle bounded by the locations (srcX0, srcY 0) and (srcX1, srcY 1)
> to the destination rectangle bounded by the locations (dstX0, dstY 0)
> and (dstX1, dstY 1). The lower bounds of the rectangle are inclusive,
> while the upper bounds are exclusive."
>
> So, the rectangles sharing just an edge shouldn't overlap.
> -----------
> | |
> ------- ---
> | | |
> | | |
> ------- ---
>
> Cc: Ian Romanick <ian.d.roman...@intel.com>
> Cc: Matt Turner <matts...@gmail.com>
> Signed-off-by: Anuj Phogat <anuj.pho...@gmail.com>
> ---
> src/mesa/main/blit.c | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/src/mesa/main/blit.c b/src/mesa/main/blit.c
> index a32f1a4..9c4c0f3 100644
> --- a/src/mesa/main/blit.c
> +++ b/src/mesa/main/blit.c
> @@ -68,16 +68,16 @@ _mesa_regions_overlap(int srcX0, int srcY0,
> int dstX0, int dstY0,
> int dstX1, int dstY1)
> {
> - if (MAX2(srcX0, srcX1) < MIN2(dstX0, dstX1))
> + if (MAX2(srcX0, srcX1) <= MIN2(dstX0, dstX1))
> return false; /* dst completely right of src */
>
> - if (MAX2(dstX0, dstX1) < MIN2(srcX0, srcX1))
> + if (MAX2(dstX0, dstX1) <= MIN2(srcX0, srcX1))
> return false; /* dst completely left of src */
>
> - if (MAX2(srcY0, srcY1) < MIN2(dstY0, dstY1))
> + if (MAX2(srcY0, srcY1) <= MIN2(dstY0, dstY1))
> return false; /* dst completely above src */
>
> - if (MAX2(dstY0, dstY1) < MIN2(srcY0, srcY1))
> + if (MAX2(dstY0, dstY1) <= MIN2(srcY0, srcY1))
> return false; /* dst completely below src */
>
> return true; /* some overlap */
> --
> 2.5.0
>
Anyone want
to review these two patches?
https://patchwork.freedesktop.org/series/1763/
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