Framebuffer blitting operation should be skipped if any of the dimensions (width/height) of src/dst rect are zero.
Fixes: fbblit(negative.nullblit.zeroSize) in Intel oglconform https://bugs.freedesktop.org/show_bug.cgi?id=59495 Note: Candidate for all the stable branches. Signed-off-by: Anuj Phogat <anuj.pho...@gmail.com> --- src/mesa/main/fbobject.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/src/mesa/main/fbobject.c b/src/mesa/main/fbobject.c index d6acc58..58a2d0b 100644 --- a/src/mesa/main/fbobject.c +++ b/src/mesa/main/fbobject.c @@ -2876,7 +2876,9 @@ _mesa_BlitFramebuffer(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, readFb = ctx->ReadBuffer; drawFb = ctx->DrawBuffer; - if (!readFb || !drawFb) { + if (!readFb || !drawFb || + (srcX1 - srcX0) == 0 || (srcY1 - srcY0) == 0 || + (dstX1 - dstX0) == 0 || (dstY1 - dstY0) == 0) { /* This will normally never happen but someday we may want to * support MakeCurrent() with no drawables. */ -- 1.7.11.7 _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
