diff options
| author | Morten Johan Sørvig <morten.sorvig@qt.io> | 2019-04-10 14:25:59 +0200 |
|---|---|---|
| committer | Simon Hausmann <simon.hausmann@qt.io> | 2019-04-12 05:55:03 +0000 |
| commit | 72a16358112512c49022a8f80432d2d3a330fff2 (patch) | |
| tree | 042b5a3171ea59d4fc500d66256299e718536429 /src | |
| parent | fe3e9110327f022daf676766ce04b8a0a147c7c9 (diff) | |
Document macOS threaded render loop availability
The threaded render loop (or specifically
QPlatformIntegration::Capability::ThreadedOpenGL) is
disabled when building with Xcode 10 (10.14 SDK).
Task-number: QTBUG-75037
Change-Id: Ib0b4cab56c053958fcae5616cbb496602efbf5e1
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
Diffstat (limited to 'src')
| -rw-r--r-- | src/quick/doc/src/concepts/visualcanvas/scenegraph.qdoc | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/src/quick/doc/src/concepts/visualcanvas/scenegraph.qdoc b/src/quick/doc/src/concepts/visualcanvas/scenegraph.qdoc index 4c94259139..9383c78a42 100644 --- a/src/quick/doc/src/concepts/visualcanvas/scenegraph.qdoc +++ b/src/quick/doc/src/concepts/visualcanvas/scenegraph.qdoc @@ -1,6 +1,6 @@ /**************************************************************************** ** -** Copyright (C) 2018 The Qt Company Ltd. +** Copyright (C) 2019 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the documentation of the Qt Toolkit. @@ -269,7 +269,7 @@ animations, process events, etc. \endlist The threaded renderer is currently used by default on Windows with -opengl32.dll, Linux with non-Mesa based drivers, \macos, mobile +opengl32.dll, Linux with non-Mesa based drivers, mobile platforms, and Embedded Linux with EGLFS but this is subject to change. It is possible to force use of the threaded renderer by setting \c {QSG_RENDER_LOOP=threaded} in the environment. @@ -277,13 +277,19 @@ setting \c {QSG_RENDER_LOOP=threaded} in the environment. \section2 Non-threaded Render Loops ("basic" and "windows") The non-threaded render loop is currently used by default on Windows -with ANGLE or a non-default opengl32 implementation and Linux with +with ANGLE or a non-default opengl32 implementation, \macos, and Linux with Mesa drivers. For the latter this is mostly a precautionary measure, as not all combinations of OpenGL drivers and windowing systems have been tested. At the same time implementations like ANGLE or Mesa llvmpipe are not able to function properly with threaded rendering at all so not using threaded rendering is essential for these. +On macOS, the threaded render loop is not supported when building +with XCode 10 (10.14 SDK) or later, since this opts in to layer-backed +views on macOS 10.14. You can build with Xcode 9 (10.13 SDK) to opt +out of layer-backing, in which case the threaded render loop is +available and used by default. + By default \c windows is used for non-threaded rendering on Windows with ANGLE, while \c basic is used for all other platforms when non-threaded rendering is needed. |