Like the change to op.Offset before this, clip.RRect and UniformRRect
is usually used with integer coordinates. Change to integer coordinates
to eliminate many useless conversions to float32.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
When the rectangle used in an Ellipse has no width
or height, the path would panic with "path not closed".
Use an empty rectangle path in that case instead.
Signed-off-by: Pierre Curto <pierre.curto@gmail.com>