Commit graph

4 commits

Author SHA1 Message Date
Eike Hein
2c26215d7e Request a high-priority EGL contexts
Summary:
This patch implements using EGL_IMG_context_priority to request
high-priority rendering contexts if the extension is available.

EGL_IMG_context_priority is currently used in this fashion by
e.g. Android's SurfaceFlinger (RenderEngine.cpp) and libweston
(gl-renderer.c) and seems promising given this widespread
acceptance.

Reviewers: #kwin, graesslin, romangg, davidedmundson

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D11572
2018-03-29 20:34:22 +09:00
Martin Flöser
f88c322a3b [platforms/x11] Use a GlxContextAttributeBuilder
Summary:
Based on the work of 3f4995fb9b this change
introduces a GlxContextAttributeBuilder to make the requesting of context
attributes cleaner, more verbose and less error prone copy and paste.

Test Plan:
Switched between Core and legacy and verified the output;
extended auto test

Reviewers: #kwin, #plasma

Subscribers: plasma-devel

Tags: #plasma

Differential Revision: https://phabricator.kde.org/D6411
2017-08-19 11:34:51 +02:00
Martin Flöser
73fa7b21a1 [qpa] Use the new OpenGLContextAttributeBuilder to create Qt's OpenGL context
Summary:
Introduces a few more attributes needed for creating the OpenGL context
used by the QPA.

Test Plan:
Extended test and run KWin/Wayland and verified that OpenGL context
gets created correctly.

Reviewers: #kwin, #plasma

Subscribers: plasma-devel, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D6734
2017-07-17 16:53:37 +02:00
Martin Flöser
3f4995fb9b Refactor the specification of OpenGL context attributes
Summary:
The current way to specify the OpenGL context attributes does no longer
scale as can be seen in D6344. There are too many different context
attribute sets and with every addition we grow lots of copied code. The
chances to introduce errors in that code which is difficult to debug are
very high. As can be seen in the glx backend which defines major 1,
minor 2, but it should be major 2, minor 1.

This change reworks this code by creating a builder class which contains
only an abstract definition of what needs to be in the attributes.
E.g. the version, whether it's robust and so on.

Now we can just have a list of possible attributes in a well described
way:
    auto builder;
    builder.setVersion(3, 1);
    builder.setRobust(true);

All possible builders are added to a list and operated on in a for loop
which tries to creat a context. Once it succeeded it breaks the list.
In addition a debug statement is added which prints out the set of
options which went into the context.

So far this is only done for EGL, GLX can follow once D6344 is merged.

Test Plan: New unit test added, kwin_wayland OpenGL tests run and verified

Reviewers: #kwin, #plasma

Subscribers: plasma-devel, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D6396
2017-06-26 22:13:47 +02:00