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663 Commits

Author SHA1 Message Date
Timm Bäder
e0436b3d59 gl renderer: Properly delete all shader programs 2017-12-29 05:48:43 +01:00
Timm Bäder
d2d18f74f8 gl driver: Remove gl-context property 
No need for this to be a property.
 2017-12-29 05:48:43 +01:00
Timm Bäder
1cbd4d229e gl driver: Remove dead warning code 
_get_fbo never returns NULL.
 2017-12-29 05:48:43 +01:00
Timm Bäder
c9656e2864 gl driver: Only support one fbo per texture 2017-12-29 05:48:43 +01:00
Timm Bäder
352590cf9f gl driver: Remove vao API 
Unused.
 2017-12-29 05:48:43 +01:00
Timm Bäder
825608af2a gl renderer: Remove unused parameter 2017-12-29 05:48:43 +01:00
Timm Bäder
4abbf929ad gl renderer: Remove some unused uniforms from shader 2017-12-29 05:48:42 +01:00
Timm Bäder
aeaab5557b gl renderer: Only draw what we have to 2017-12-29 05:48:42 +01:00
Timm Bäder
2bc10fa365 gl renderer: draw all outset shadows 
Instead of falling back to cairo for most of them.
 2017-12-29 05:48:40 +01:00
Timm Bäder
9f2674077a gl renderer: Properly flip texture in render_texture path 
Just do this on the CPU instead.
 2017-12-28 16:48:35 +01:00
Timm Bäder
a720a63fa3 gl renderer: Insert render target op in render_texture path 2017-12-28 16:48:35 +01:00
Timm Bäder
7a2d30323e gl renderer: try doing outset box shadows 
Still fall back in cases we can't handle that way.
 2017-12-21 19:12:33 +01:00
Timm Bäder
d211f42091 gl renderer: Remove unused vertex shader 2017-12-21 19:12:32 +01:00
Timm Bäder
f044b01549 gl renderer: Don't crash if the first op is an opacity one 2017-12-21 19:12:32 +01:00
Timm Bäder
490e15021c gl renderer: Force cross-fade nodes offscreen 2017-12-21 19:12:32 +01:00
Timm Bäder
48be2aed23 gl renderer: Use one function per op type to apply data 2017-12-21 19:12:32 +01:00
Timm Bäder
28499032da gl renderer: Don't leak gl resources 2017-12-21 19:12:32 +01:00
Timm Bäder
ee27b17a12 gl renderer: Fix indentation mishap 2017-12-21 19:12:32 +01:00
Timm Bäder
a83037c440 gl renderer: Implement cross fade nodes 2017-12-21 19:12:32 +01:00
Timm Bäder
bed03aa319 gl renderer: Fix linear gradient shader color calculation 
This fixes both the wrong headerbar color and the broken border color in
of the circular button in the widget-factory.
 2017-12-21 19:12:32 +01:00
Timm Bäder
eb221ff305 gl renderer: Only take glyph texture alpha into account 
This way, we can use the very same coloring program to draw text shadows
of fonts with colored glyphs.
 2017-12-21 19:12:32 +01:00
Timm Bäder
075e6ac266 gl renderer: Fix shadow nodes if the child is a container 2017-12-21 19:12:32 +01:00
Timm Bäder
18e7d777a2 gl renderer: Move declarations to the beginning of the block 2017-12-21 19:12:32 +01:00
Timm Bäder
e9be72a73e gl renderer: Fix use of uninitialized values 2017-12-21 19:12:32 +01:00
Timm Bäder
33457b4035 gl renderer: Ensure texture sizes arent 0 
We already ceil() the given float texture sizes here, so if they are
valid, the result should definitely be > 0. Textures with size 0 can't
be properly used, especially not as render targets, where they will
trigger an assertion failure later in a glCheckFramebuffer call.
 2017-12-21 19:12:32 +01:00
Timm Bäder
49c7cf36e4 gl renderer: Fix inset and outset shadows in hidpi 2017-12-21 19:12:32 +01:00
Timm Bäder
b03f08960b gl renderer: Fix cairo node surface size in hidpi 2017-12-21 19:12:32 +01:00
Timm Bäder
d9e135dcb5 gl renderer: Fix rounded clips in hidpi 2017-12-21 19:12:32 +01:00
Timm Bäder
3411e648b4 gl renderer: Handle borders in hidpi better 2017-12-21 19:12:32 +01:00
Timm Bäder
64400e82b5 gl renderer: Default to 0px clip and border radius 
Finally fix the division by 0 in the clip code.
 2017-12-21 19:12:32 +01:00
Timm Bäder
703c4cf003 gl renderer: Ignore render ops before we have a valid program 2017-12-21 19:12:32 +01:00
Timm Bäder
2d3e87da46 gl renderer: Try to fix border rendering 2017-12-21 19:12:32 +01:00
Timm Bäder
a59f380d31 gl renderer: Use one function per node-type 
So a profiler can actually tell me what's slow and not just point at
_add_render_ops in all cases.
 2017-12-21 19:12:32 +01:00
Timm Bäder
ab53ee7377 gl renderer: Don't render opacity nodes offscreen 
We already drag a u_alpha uniform around in every shader, so use that
one.
 2017-12-21 19:12:32 +01:00
Timm Bäder
fd0b7caa7c gl renderer: Fix shadow shader 
We need to take the alpha of the shadow color into account as well.
 2017-12-21 19:12:32 +01:00
Timm Bäder
476450b93e gl renderer: Ignore shadow color matrix nodes... 
... if the color matrix nodes don't touch the child alpha.
 2017-12-21 19:12:32 +01:00
Timm Bäder
98ba28b5d7 gl renderer: Add a helper function 
We'll use this for the common case of a color matrix node inside a
shadow node.
 2017-12-21 19:12:32 +01:00
Timm Bäder
49785974cf gl renderer: Don't zero initialize render ops GArray 2017-12-21 19:12:32 +01:00
Timm Bäder
7cc868910b gl renderer: Avoid crashing tooltips 2017-12-21 19:12:31 +01:00
Timm Bäder
39a241b763 gl renderer: Sort border sides by color 2017-12-21 19:12:31 +01:00
Timm Bäder
c9af94f6db gl renderer: Keep track of border program state 2017-12-21 19:12:31 +01:00
Timm Bäder
f978bf057f gl renderer: Avoid using a new modelview for shadow nodes 
We can just move the vertex data directly.
 2017-12-21 19:12:31 +01:00
Timm Bäder
7ad8f211c6 gl renderer: Default to GL_LINEAR scaling filters 2017-12-21 19:12:31 +01:00
Timm Bäder
5cdd46e38e gl renderer: Remove superfluous modelview matrix changes 2017-12-21 19:12:31 +01:00
Timm Bäder
1fce25c7af gl renderer: Remove unused struct member 2017-12-21 19:12:31 +01:00
Timm Bäder
9479bb6bfc gl renderer: Keep track of color matrix op state 2017-12-21 19:12:31 +01:00
Timm Bäder
b33d85b594 gl renderer: Avoid consecutive opacity ops 2017-12-21 19:12:31 +01:00
Timm Bäder
a0e033b2cd gl renderer: Define debug structs inline 2017-12-21 19:12:31 +01:00
Timm Bäder
5d0c279351 gl renderer: Add more detailed render op output 2017-12-21 19:12:31 +01:00
Timm Bäder
7831d9a463 gl renderer: Only draw blurred shadow nodes once 2017-12-21 19:12:31 +01:00
Timm Bäder
7dc6a46cff gl renderer: Remove consecutive clip ops 2017-12-21 19:12:31 +01:00
Timm Bäder
bb69d64a0f gl renderer: Rename a macro 2017-12-21 19:12:31 +01:00
Timm Bäder
8463040ad1 gl renderer: Fix debugging output 2017-12-21 19:12:31 +01:00
Timm Bäder
3b7cfd068b gl renderer: Implement simple border nodes 2017-12-21 19:12:31 +01:00
Timm Bäder
8089cde977 gl renderer: Don't render unblurred text shadows to a texture 
We can do the same thing by simply drawing the text in the given shadow
color.
 2017-12-21 19:12:31 +01:00
Timm Bäder
d5a759652f gl renderer: Split out text rendering function 
We'll use that for text shadow nodes
 2017-12-21 19:12:31 +01:00
Timm Bäder
e95b356465 gl renderer: Implement simple shadow nodes 2017-12-21 19:12:31 +01:00
Timm Bäder
c524ac7bb5 gl renderer: Split out a utility function 2017-12-21 19:12:31 +01:00
Timm Bäder
8c9e203458 gl renderer: Fix inset shadow offset calculation 2017-12-21 19:12:31 +01:00
Timm Bäder
47c4bf5be0 gl renderer: Implement unblurred outset shadows 2017-12-21 19:12:31 +01:00
Timm Bäder
5c7838e168 gl renderer: Rework program creation 
Make sure all uniform names have to match between the shader names and
the _location integers we save in every Program struct.
 2017-12-21 19:12:31 +01:00
Timm Bäder
388157b995 gl renderer: Implement unblurred inset shadows 2017-12-21 19:12:31 +01:00
Timm Bäder
6a1a70c677 gl renderer: Implement blur nodes 2017-12-21 19:12:31 +01:00
Timm Bäder
ff1cacb54a gl renderer: Remove some unused members 2017-12-21 19:12:31 +01:00
Timm Bäder
19700fccb2 gl renderer: Keep track of current program color value 2017-12-21 19:12:31 +01:00
Timm Bäder
2865ab84a9 gl renderer: Don't draw texture nodes to a framebuffer 
We don't need to create a texture from a texture node. We can simply use
its texture instead and draw it however we want.
 2017-12-21 19:12:31 +01:00
Timm Bäder
e3264d5fd3 gl renderer: Implement color matrix nodes again 2017-12-21 19:12:31 +01:00
Timm Bäder
cb9c4e362c gl render ops: Rename a member 2017-12-21 19:12:31 +01:00
Timm Bäder
b56a7afd19 gl renderer: Factor out a helper function for offscreen drawing 2017-12-21 19:12:30 +01:00
Timm Bäder
95051e13c3 gl ops: Remove dead code 
This is already checked further up in that function
 2017-12-21 19:12:30 +01:00
Timm Bäder
832920c6ba gl renderer: Optimize text drawing 
Text nodes will almost always end up using the exact same texture and
the same program. So, in that case we can simply add vertex data for all
the characters we need to draw and use just one draw call.
 2017-12-21 19:12:30 +01:00
Timm Bäder
fa564e1f93 gl renderer: Remove unused VAO 2017-12-21 19:12:30 +01:00
Timm Bäder
d5eeb9d6f0 gl renderer: Stop collecting VAOs in clear_tree 
We don't use that part of the gl driver anymore.
 2017-12-21 19:12:30 +01:00
Timm Bäder
6606c1f682 gl renderer: Only check for color glyphs once per text node 
It does not depend on the glyph, so no need to do it once for every
glyph.
 2017-12-21 19:12:30 +01:00
Timm Bäder
5615fd26c2 gl renderer: Implement cairo nodes again 2017-12-21 19:12:30 +01:00
Timm Bäder
a1d3e77347 gl renderer: Move render ops into separate file 2017-12-21 19:12:30 +01:00
Timm Bäder
823369f275 gsk: Move all gskgl* files into gl/ 2017-12-21 19:12:30 +01:00
Timm Bäder
358c139a43 gl renderer: Rework once more 
Last time, I swear.
 2017-12-21 19:12:30 +01:00
Timm Bäder
dd1a9745db gl renderer: Don't initialize modelview matrix twice 2017-12-21 19:12:30 +01:00
Timm Bäder
59a7584386 gl renderer: Group render node types by render item creation 2017-12-21 19:12:30 +01:00
Timm Bäder
f4304336ea gl renderer: Don't pass MVP to shaders 
We already pass both modelview and projection matrix individually.
 2017-12-21 19:12:30 +01:00
Timm Bäder
4cf2a482ea gl: Add glyph cache 
Based on the one used by the vulkan renderer
 2017-12-21 19:12:30 +01:00
Timm Bäder
3e23f6c22b gl renderer: Remove unused member 2017-12-21 19:12:30 +01:00
Timm Bäder
9b400134d5 gl renderer: Remove unused shaders 2017-12-21 19:12:30 +01:00
Timm Bäder
33aa61ef2c gl renderer: Save clip in every node 2017-12-21 19:12:30 +01:00
Timm Bäder
1f5fd4d564 gl renderer: Don't create framebuffer for texture opacity children 
Slowly a pattern emerges...
 2017-12-21 19:12:30 +01:00
Timm Bäder
24e69bb877 gl renderer: Implement rounded clip nodes 
mostly a proof of concept
 2017-12-21 19:12:30 +01:00
Timm Bäder
cd730ccff5 gl renderer: save on some frame buffers 
If the child of a color matrix node is a texture, we can directly use
that instead of drawing it to a texture first and then using that
texture.
 2017-12-21 19:12:30 +01:00
Timm Bäder
1d1c6a98ce GskGLDriver: Add profiler 
Count the newly created textures, the reused ones and the uploads from
cairo surfaces per frame.
 2017-12-21 19:12:30 +01:00
Timm Bäder
ddb77d6c9b GskGLDriver: Use float for texture size in create_texture 
Render nodes can end up with bounds < 1 since they are floats, and the
implicit cast to int ends up creating a texture with 0 width or height.
Use ceil() instead in create_texture so we don't have to do that on the
caller side everywhere.
 2017-12-21 18:25:52 +01:00
Timm Bäder
4aa3f51016 test-render-nodes: Add color matrix test 2017-12-21 18:25:52 +01:00
Timm Bäder
6bce14bee2 Rework the GL renderer 2017-12-21 18:25:52 +01:00
Timm Bäder
5fa5008ee9 gl renderer: Remove some unused code 2017-12-21 18:25:52 +01:00
Timm Bäder
fe7db31663 gl driver: Make some members const 2017-12-21 18:25:52 +01:00
Timm Bäder
b488329104 GskRenderer: Remove viewport property 2017-12-21 18:25:52 +01:00
Georges Basile Stavracas Neto
8993a51893 vulkan: Destroy buffer before releasing associate memory 
Exact same issue as the previous commit.
 2017-12-13 23:14:58 -02:00
Georges Basile Stavracas Neto
147a455171 vulkan: Destroy image before releasing associate memory 
VkImage contains a reference to the VkDeviceMemory and, because
the current code frees the VkDeviceMemory before destroying the
VkImage that references it, a warning is triggered by the validation
layers.

This is not critical, since we release both resources at the same
place. But the warning triggered by the validation layers sums up
adding 1 MB per second of extra debug logging, making the debugging
process much more painful.

This commit simply swaps the destruction order, and destroys the
VkImage first, then the now unused VkDeviceMemory.
 2017-12-13 22:49:16 -02:00
Benjamin Otte
52b1cd40d1 gsk: Remove gsk_render_node_set_scaling_filters() 
This is a leftover from the very early rendernode that we forgot to delete.

This can be seen by the fact that it is settable on an immutable object.
 2017-12-03 21:57:21 +01:00
Benjamin Otte
9048d40bc2 vulkan: Fix mask shader to premultiply color 
The inColor wasn't premultiplied, so the resulting colors were wrong
with translucent borders.
 2017-12-02 16:21:58 +01:00
Benjamin Otte
abc8d61730 vulkan: Fix border shader to premultiply color 
The inColor wasn't premultiplied, so the resulting colors were wrong
with translucent borders.
 2017-12-02 16:21:58 +01:00
Timm Bäder
34e233e1c3 GskVulkanGlyphCache: Remove unused struct member 2017-12-01 07:30:25 +01:00
Alexander Larsson
521b09cc96 broadway: Send diffs of node trees 
Reusing pre-created nodes is a lot faster both in terms of
dom modifications and of transfer sizes.
 2017-11-30 21:57:42 +01:00
Matthias Clasen
9b582db492 gsk: Quiet a compiler warning 
We insist on handling all cases in a switch, nowadays.
 2017-11-24 08:51:22 -05:00
Alexander Larsson
820f999f14 broadway: Disable fallback spew by default 2017-11-23 10:48:29 +01:00
Alexander Larsson
12d3cd8f29 broadway: Handle cairo nodes 
This means we can directly upload these as textures, rather than
create a new surface and draw it into that. We still have to upload,
but there isn't a lot we can do about this as for these nodes
we generally redraw everything each time.
 2017-11-23 10:48:29 +01:00
Alexander Larsson
4d1eca0d57 broadway: Handle texture gsd nodes 2017-11-23 10:48:29 +01:00
Alexander Larsson
b74959a605 broadway: Add clip node 2017-11-23 10:48:29 +01:00
Alexander Larsson
7a180f554d broadway: Don't log cache hits 2017-11-23 10:48:29 +01:00
Alexander Larsson
0d4a26f148 broadway: Cache color translated textures 
These happen a lot due to the recolored symbolics
 2017-11-23 10:48:29 +01:00
Alexander Larsson
9e5a22bbe5 broadway: Add opacity node 2017-11-23 10:48:29 +01:00
Alexander Larsson
9b1f6acc2b broadway: Add shadow node 2017-11-23 10:48:29 +01:00
Alexander Larsson
cbbbf49043 broadway: Add node cache for text 2017-11-23 10:48:29 +01:00
Alexander Larsson
278370c8e5 broadway: Add linear gradient node 2017-11-23 10:48:29 +01:00
Alexander Larsson
f7ff6dbb66 broadway: Add RoundedClip node 2017-11-23 10:48:29 +01:00
Alexander Larsson
0083c084e4 broadway: Add inset shadow 2017-11-23 10:48:29 +01:00
Alexander Larsson
35ceb8e626 broadway: Add outset shadow node 2017-11-23 10:48:29 +01:00
Alexander Larsson
cf03229a99 broadway: Add border node 2017-11-23 10:48:29 +01:00
Alexander Larsson
0b38ab339e broadway: Add color nodes 2017-11-23 10:48:29 +01:00
Alexander Larsson
f7d8ee041b broadway: Initial version of using actual render nodes 2017-11-23 10:48:29 +01:00
Alexander Larsson
23845a57a9 broadway: Add GskBroadwayRenderer 
This is a custom renderer for broadway windows, although at the
moment it doesn't really do anything other than the old cairo
fallbacks.
 2017-11-23 10:46:47 +01:00
Emmanuele Bassi
481b5d1b89 Partially revert GskTexture → GdkTexture rename 
Excessive use of sed when moving GskTexture to GDK; the GskTextureNode
should still live under the GSK namespace.
 2017-11-04 15:06:00 +00:00
Benjamin Otte
bd287ba3cf renderer: Assert having been unrealized in dispose 
We cannot unrealize a renderer in the dispose function, because that
would cause this chain to happen:
  gsk_gl_renderer_dispose
  gsk_renderer_dispose
  gsk_renderer_unrealize
  gsk_gl_renderer_unrealize
So we would call into thje GL renderers unrealize when it has already
(partially) disposed itself and ause accesses to dead variables.
 2017-11-04 15:22:25 +01:00
Benjamin Otte
ca3c23662c GskTexture => GdkTexture 
We want this thing to replace GdkPixbuf, so it has to live in GDK.
 2017-11-04 00:07:13 +01:00
Benjamin Otte
6b3d979196 gskgl: Deal with being rerealized 2017-11-01 15:48:00 +01:00
Matthias Clasen
ca7c148687 gsk: Apply scale factor for fallback rendering 
This fixes blurry text and icons whenever we apply shadows
in a hidpi window. Shadow nodes are the last ones that we
still use fallback for, and this was causing us to render
the text blurry.
 2017-10-28 14:38:49 -04:00
Matthias Clasen
439e1054c4 Triival cleanup 
No need to go to the window, we store a copy of the scale factor
in the render pass object.
 2017-10-28 14:38:21 -04:00
Matthias Clasen
a0bbd14325 gsk: Scale glyphs in the glyph cache 
Pass a scale factor when caching glyphs or looking them
up in the cache. The glyphs in the cache are rendered
with subpixel precision determined by the scale. Update
all callers to pass a scale factor according to the window
scale. This lets us render crisp glyphs on hidpi systems.
 2017-10-28 13:13:31 -04:00
Matthias Clasen
dc0570cc17 gsk: Drop the GskRenderer::scale-factor property 
This is can always be obtained from the window that is already
associated with the renderer, no need to maintain a separate
property for it.
 2017-10-28 11:49:39 -04:00
Matthias Clasen
ea91ab1d99 gsk: Make text nodes more compact 
The copy of the PangoGlyphString we do here was showing up
in some profiles. To avoid it, allocate the PangoGlyphInfo array
as part of the node itself. Update all callers to deal with
the slight api change required for this.
 2017-10-27 17:13:40 -04:00
Benjamin Otte
e1572e003a vulkan: No need to redefine gl_PerVertex 
The compiler has those predefined, so use them.
 2017-10-24 01:29:28 +02:00
Benjamin Otte
e4dbff6bfc vulkan: Delete unused shaders 
These have been renamed to .frag/.vert, apparently the originals weren't
deleted.
 2017-10-24 01:29:28 +02:00
Emmanuele Bassi
dd4c800542 Remove unnecessary const 
We return a scalar value, so we don't need it to be constant.

https://bugzilla.gnome.org/show_bug.cgi?id=789351
 2017-10-23 15:23:09 +01:00
Matthias Clasen
9e78fbaac4 Fix compiler warnings 
I overlooked these when I recently did the render node api changes.
 2017-10-21 15:17:36 +02:00
Matthias Clasen
e474e9e274 Remove some outdated information 
Render nodes don't have transformations, currently.
Only transform nodes do.
 2017-10-20 13:54:01 +02:00
Matthias Clasen
b76c5abb57 Tweak transform node apis 
Rename the getter to follow the peek naming scheme.

Update all callers.
 2017-10-20 13:54:01 +02:00
Matthias Clasen
04f6b26205 gsk: Tweak text node apis 
Rename getters to follow the peek naming pattern.

Update all callers.
 2017-10-20 13:54:01 +02:00
Matthias Clasen
243bd4f0c8 gsk: Tweak cairo node apis 
Rename the surface getter to peek, following other render
node getters, and make the surface-based constructor private,
since it is not something we want to encourage.

Update all callers.
 2017-10-20 13:54:01 +02:00
Matthias Clasen
eee89587c3 Make render node getter public 
Keeping these private does not really buy us anything.
 2017-10-20 13:54:01 +02:00
Matthias Clasen
b564dd853c Avoid super-luminous pixels 
The color-matrix shader was creating pixels with r,g,b > a in
some cases, which leads to unexpected test failures. In particular
this as visible the opacity render node test for opacity 0.
 2017-10-19 15:16:54 +02:00
Timm Bäder
af734c4007 rendernode: Don't leak mem_surface 2017-10-10 09:49:35 +02:00
Matthias Clasen
76aa237cce Fix blendmode shader 
My reading of the spec formulas was imperfect.
 2017-10-08 21:12:22 -04:00
Matthias Clasen
090ec2e56f Revise coordinate handling for blend nodes 
This is the same change that was applied to cross-fade
nodes.
 2017-10-08 20:06:33 -04:00
Matthias Clasen
5280a2c874 Revise the coordinate handling one more time 
This makes the new reftests pass and hopefully does not
break other things.
 2017-10-08 19:21:52 -04:00
Matthias Clasen
9a9aec05c0 vulkan: Fix cross-fade node coordinates 
This is the same fix as was just committed for blendmode nodes.
 2017-10-08 11:31:55 -04:00
Matthias Clasen
4d7b8f5a66 vulkan: Fix blendmode coordinate handling 
We were node handling coordinates correctly when dealing
with differently sized child nodes in a blendmode node.
This was showing up in the gtk4-demo css blendmode example,
for blendmodes other than normal.
 2017-10-08 09:02:35 -04:00
Matthias Clasen
fe6e80fdde vulkan: Fix repeat node coordinates 
We were not treating non-trivial child bounds right at all.
This was visible in the css blendmode cmyk example in gtk4-demo,
for the normal blendmode.
 2017-10-08 09:02:35 -04:00
Umang Jain
a933c7c4bd gsk: Move gsk_cairo_node_new_for_surface into public API 
https://bugzilla.gnome.org/show_bug.cgi?id=788534
 2017-10-08 18:22:34 +05:30
Umang Jain
74f8fc80d3 gsk: Fix serialization of cairo node 
https://bugzilla.gnome.org/show_bug.cgi?id=788534
 2017-10-08 18:22:34 +05:30
Matthias Clasen
b9b03cf570 gskrenderer: Make the window property not construct 
We never set this, since it is assigned as a side-effect
of realizing the renderer. Make this a plain readonly property.
 2017-10-06 19:29:42 -04:00
Benjamin Otte
43c212ac28 build: Enable -Wswitch-enum and -Wswitch-default 
This patch makes that work using 1 of 2 options:

1. Add all missing enums to the switch statement
  or
2. Cast the switch argument to a uint to avoid having to do that (mostly
   for GdkEventType).

I even found a bug while doing that: clearing a GtkImage with a surface
did not notify thae surface property.

The reason for enabling this flag even though it is tedious at times is
that it is very useful when adding values to an enum, because it makes
GTK immediately warn about all the switch statements where this enum is
relevant.
And I expect changes to enums to be frequent during the GTK4 development
cycle.
 2017-10-06 21:23:39 +02:00