Commit graph

12 commits

Author SHA1 Message Date
Aleix Pol
eeeac04974 Implement EGL_KHR_partial_update and EGL_EXT_swap_buffers_with_damage
Summary:
Notify the driver about the parts of the screen that will be repainted.
In some cases this can be benefitial. This is especially useful on lima
and panfrost devices (e.g. pinephone, pinebook, pinebook pro).

Test Plan:
Tested on a pinebook pro with a late mesa version.
Basically I implemented it, then it didn't work and I fixed it.
Maybe next step we want to look into our damage algorithm.
2020-08-19 14:51:42 +00:00
Vlad Zahorodnii
4ce853e8e4 Prettify license headers 2020-08-07 19:57:56 +00:00
Vlad Zahorodnii
1fb9f6f13a Switch to SPDX license markers
The main advantage of SPDX license identifiers over the traditional
license headers is that it's more difficult to overlook inappropriate
licenses for kwin, for example GPL 3. We also don't have to copy a
lot of boilerplate text.

In order to create this change, I ran licensedigger -r -c from the
toplevel source directory.
2020-08-07 19:57:56 +00:00
Aleix Pol
27ea1b9527 screencasting: Expose necessary information to implement efficient screencasting 2020-07-23 13:14:22 +02:00
Roman Gilg
bcf64af49b Revert "Remove vsync detection and configurability"
This reverts commit b3a19f9e5b.

See: https://mail.kde.org/pipermail/kwin/2020-January/002999.html
2020-01-16 10:00:12 +01:00
Roman Gilg
ac05dd01c8 Revert "[platforms/x11] Never block on retrace, always present after paint"
This reverts commit 8d13729031.

See: https://mail.kde.org/pipermail/kwin/2020-January/002999.html
2020-01-16 10:00:08 +01:00
Roman Gilg
8d13729031 [platforms/x11] Never block on retrace, always present after paint
Summary:
Compositing in X11 was done time shifted, meaning that we paint first, then
wait one vblank interval length and present on prepareRenderingFrame the
previous paint result. This is supposed to make sure we don't miss the vblank
and in case of block till retrace be able to continue issuing commands and
only shortly before next vblank present.

This is counter-intuitiv, not how we do it on Wayland or even on MESA with X.
The reason seems to be that the GLX backend was in the beginning written
against Nvidia proprietary driver which needed this but nowadays even this
driver defaults to non-blocking behavior on buffer swap.

Therefore remove this legacy anomaly fully and directly present after paint.
We then wait one refresh cycle and in the future can optimize this by delaying
the paint and present till shortly before vsync.

Test Plan: kwin_x11 tested on i915 and Nvidia proprietary driver.

Reviewers: #kwin

Subscribers: zzag, alexeymin, kwin

Tags: #kwin

Maniphest Tasks: T11071

Differential Revision: https://phabricator.kde.org/D23514
2019-11-14 09:03:44 +01:00
Roman Gilg
b3a19f9e5b Remove vsync detection and configurability
Summary:
Selecting not to vsync does not make sense for an X11 compositor. In the end
we want clients to be able to present async if they want to but the compositor
is supposed to send swaps with vsync to the XServer in order to not generate
tearing artifacts.

There was also a detection logic which did some questionable things in case
vsync was not available. I don't think this is necessary at all since we can
just always run a timer to present with or without vsync.

Test Plan: kwin_x11 tested on i915.

Reviewers: #kwin, zzag

Subscribers: zzag, kwin

Tags: #kwin

Maniphest Tasks: T11071

Differential Revision: https://phabricator.kde.org/D23511
2019-11-14 08:55:08 +01:00
Vlad Zahorodnii
62a7db7028 Use nullptr everywhere
Summary:
Because KWin is a very old project, we use three kinds of null pointer
literals: 0, NULL, and nullptr. Since C++11, it's recommended to use
nullptr keyword.

This change converts all usages of 0 and NULL literal to nullptr. Even
though it breaks git history, we need to do it in order to have consistent
code as well to ease code reviews (it's very tempting for some people to
add unrelated changes to their patches, e.g. converting NULL to nullptr).

Test Plan: Compiles.

Reviewers: #kwin, davidedmundson, romangg

Reviewed By: #kwin, davidedmundson, romangg

Subscribers: romangg, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D23618
2019-09-19 17:48:21 +03:00
Roman Gilg
1db84a2ba7 Split Compositor class in Wayland and X11 child classes
Summary:
This patch is a first take at splitting up of the Compositor class into
Wayland and X11 child classes.

In this first patch we mostly deal with setup and teardown procedures.
A future goal is to further differentiate the compositing part itself too.

Test Plan: Manually X from VT and Wayland nested. Autotests pass.

Reviewers: #kwin

Subscribers: sbergeron, anthonyfieroni, zzag, kwin

Tags: #kwin

Maniphest Tasks: T11071

Differential Revision: https://phabricator.kde.org/D22195
2019-08-07 21:06:53 +02:00
Vlad Zagorodniy
4e5d3d0010 Port away from QRegion::rects
Summary:
QRegion::rects was deprecated in Qt 5.11. It is advised to use begin()
and end() methods instead.

Reviewers: #kwin, romangg

Reviewed By: #kwin, romangg

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D22353
2019-07-10 01:00:51 +03:00
Martin Flöser
8ae37c420b Move SceneOpenGL into a dedicated plugin
Summary:
Unfortunately a rather large change which required more refactoring than
initially expected. The main problem was that some parts needed to go
into platformsupport so that the platform plugins can link them. Due to
the rather monolithic nature of scene_opengl.h a few changes were
required:
* SceneOpenGL::Texture -> SceneOpenGLTexture
* SceneOpenGL::TexturePrivate -> SceneOpenGLTexturePrivate
* texture based code into dedicated files
* SwapProfiler code into dedicated files
* SwapProfiler only used in x11 variants
* Safety checks for OpenGL scene moved into the new plugin
* signal declared in SceneOpenGL moved to Scene, so that we don't need
to include SceneOpenGL in composite

Test Plan: Nested OpenGL compositor works

Reviewers: #kwin, #plasma

Subscribers: plasma-devel, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D7740
2017-09-30 13:12:10 +02:00