This was an experiment where an offscreen was translated inside an
existing clip.
Because renderers try to limit offscreens to the clip rect, this is
interesting, because they might get the translation wrong.
The repeated tests were not careful enough to produce
the correct reference image to match what the repeat
node does.
With these changes, all cairo tests pass.
Add options to the gsk compare-render test for
modifying the node (and do a matching change to
the reference image).
flip: negative scale flipping things horizontally
rotate: 90 degree rotation
repeat: 2x2 grid
In constrast to our other tests, these use
textures that are big enough to force slicing
with setting GSK_MAX_TEXTURE_SIZE, which we
will use in the following commits to improve
test coverage.
The GL renderer was creating sripes for nodes that were scaled in
particular ways, probably due to rounding errors.
This testsuite focuses on one of those stripes to make sure they are
gone.
This test fails if we naively create fullscale
intermediate offscreens. This was fixed in the
previous commits.
This tests the fixes in 22ba6b1f33 (for
cairo) and 3a0152b65f (for GL).
When large viewports are passed to gsk_renderer_render_texture(), don't
fail (or even return NULL).
Instead, draw multiple tiles and assemble them into a memory texture.
Tests added to the testsuite for this.
Tests that overdrawing of content inside an opacity node happens before
the opacity is applied.
This is broken in the GL renderer and causes the opacity.ui reftest to
fail.
Compare clipped repeat nodes. Must skip cairo here
since it blurred the child by scaling after rendering.
Also skip the gl renderer, since it hasn't been fixed
for this yet. ngl passes this test.
When we are rendering a texture node to an offscreen,
and we have a clip, we must force the offscreen rendering.
Otherwise, the code will notice: Hey, it already is a texture
node, so no need to render it to a texture again. But when
clipping is involved, that is exactly what we want to do.
Testcase included.
Fixes: #3651
If the inner clip intersects with the corners of the outer clip, we
potentially need a texture. We should add more fine-grained checks for
this in the future though.
Test case included.
We don't need to just look at the scale of the new modelview matrix, but
at the one we get when multiplying the new one with the current one.
Test case attached.
