fboitem, the OpenGL-based QQuickFramebufferObject example is now gone,
replaced by the rhitextureitem example.
It is now possible to implement a custom QQuickItem that renders into a
QRhiTexture and then draws a triangle/strip geometry textured with that
texture using just public Qt Quick APIs and the semi-public QRhi APIs.
There should be conveniences provided for this in future Qt versions,
but for the time being we provide an example how applications can do
this in Qt 6.6 already. This complements the rhiunderqml example which
shows the underlay/overlay approach, and the customrendernode example
that shows the "inline" approach with a custom QSGRenderNode. The
rhitextureitem example added here shows the third, "offscreen" approach
that goes through a texture.
The example docs are better than before but not yet complete.
To be extended separately.
Task-number: QTBUG-113331
Change-Id: I83000c08b057dd72371e2909905120dc496cb34d
Reviewed-by: Andy Nichols <andy.nichols@qt.io>
And fix up the scenegraph example list on the Qt Quick example page.
Task-number: QTBUG-113331
Change-Id: Ic7b97871253d16b778f7da6088f4a9130bef2ec5
Reviewed-by: Andy Nichols <andy.nichols@qt.io>
Replace the current license disclaimer in files by
a SPDX-License-Identifier.
Files that have to be modified by hand are modified.
License files are organized under LICENSES directory.
Pick-to: 6.4
Task-number: QTBUG-67283
Change-Id: I63563bbeb6f60f89d2c99660400dca7fab78a294
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>
406f15ce0e only removed the "QtGui" prefix from some includes, but we are
trying to move (almost) everything OpenGL related from QtGui.
This removes prefixes for additional QOpenGL includes (QOpenGLShaderProgram,
versioned opengl functions etc.).
Task-number: QTBUG-74409
Change-Id: I91e1feac0676859f11de9b75301a0a4e81db50d9
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
Opt in via environment variables:
QSG_RHI=1 -> enable using QRhi instead of GL
QSG_RHI_BACKEND -> set to vulkan, metal, d3d11, gl to override the default
(the default is d3d11 on Windows, metal on Mac, gl elsewhere)
Or force a given rhi backend via the existing
QQuickWindow::setSceneGraphBackend().
Otherwise the default behavior is the same as before, the rhi code path
is never active by default.
-no-opengl builds are supported in the sense that they work and default
to the software backend. However, the rhi code path cannot currently be
used in such builds, even though QRhi from qtbase is fully functional
with Vulkan, D3D, or Metal even when qtbase was configured with
-no-opengl. This cannot be utilized by Quick atm due to OpenGL usage
being all over the place in the sources corresponding to the default
backend, and those host the rhi code path as well. This will be cleaned up
hopefully in Qt 6, with the removal all direct OpenGL usage.
Other env.vars.:
QSG_RHI_DEBUG_LAYER=1 -> enable D3D debug or Vulkan validation layer
(assuming the system is set up for this)
QSG_RHI_SHADEREFFECT_DEBUG=1 -> print stuff from ShaderEffect
QSG_SAMPLES=1,2,4,... -> MSAA sample count (but QSurfaceFormat works too)
QT_D3D_ADAPTER_INDEX=0,1,... -> D3D adapter index
QT_VK_PHYSICAL_DEVICE_INDEX=0,1,... -> Vulkan physical device index
QSG_RHI_UINT32_INDEX=1 -> always use uint index data (both
merged/unmerged, convert when needed - with some rhi backends this is
implicit)
QSG_RENDER_LOOP -> to override the render loop as usual. The default
with RHI is threaded for Metal, threaded for Vulkan on Windows, basic
for Vulkan on Linux and Android (to be checked later), while the existing
rules apply for OpenGL.
Not supported when running with QRhi:
- particles
- compressed atlases (though this is transparent to the apps)
- QSGRenderNode
- QQuickRenderControl
- QQuickFramebufferObject
- certain QQuickWindow functionality that depends directly on OpenGL
- anisotropic filtering for textures
- native text may lack some gamma correction
- QSGEngine applicability unclear
- some QML profiler logs may be incorrect or irrelevant
Change-Id: I7822e99ad79e342e4166275da6e9e66498d76521
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Use M_PI in C++ and Math.PI in JavaScript (including QML).
Use qmath.h's value for M_PI where we can't avoid an explicit value.
Task-number: QTBUG-58083
Change-Id: Iabe938aff62ceac27b939ec33c6ee5e854aac15e
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
Qt copyrights are now in The Qt Company, so we could update the source
code headers accordingly. In the same go we should also fix the links to
point to qt.io.
Change-Id: I61120571787870c0ed17066afb31779b1e6e30e9
Reviewed-by: Iikka Eklund <iikka.eklund@theqtcompany.com>
I also cleaned up the naming of the other scene graph examples a bit,
so that they sort together in the samples list and have a more obvious
naming scheme.
Task-number: QTBUG-29548
Change-Id: I455eacb02c06058a6d49e12e4f1813ec80b655f6
Reviewed-by: Samuel Rødal <samuel.rodal@digia.com>
Eskil Abrahamsen Blomfeldt
Laszlo Agocs
Lucie Gérard
Jarek Kobus
Johan Klokkhammer Helsing
Liang Qi
Kai Koehne
Edward Welbourne
Jani Heikkinen
Laszlo Agocs
Gunnar Sletta