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From API review.
Change-Id: I3cda6f4b4e5a2e33356e7af4f7720e0b019b546d
Reviewed-by: Andy Nichols <andy.nichols@qt.io>
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Quick3D is broken in combination with QQuickRenderControl. This is
because just exposing the swapchain is not enough - there is no
swapchain with QQuickRenderControl. Rather, one needs access to the
command buffer and render target then.
Change-Id: I6c06ad3d83ab0018b9f985073757a3378dbce24b
Reviewed-by: Andy Nichols <andy.nichols@qt.io>
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We want to be able to use this enum from the public API, so we move
it out to a suitable public class.
Task-number: QTBUG-84695
Change-Id: I8a3860ecfd0da7990941540bcf39fb0c2bf0ff83
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
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...similarly to how we already do it for the QRhi itself. Just follow
the same pattern.
This allows Qt Quick 3D to stop peeking directly into QQuickWindowPrivate
and accessing member variables in there.
Code like the following
QQuickWindowPrivate *wd = QQuickWindowPrivate::get(window);
QRhiCommandBuffer *cb = wd->swapchain->currentFrameCommandBuffer();
QRhiRenderPassDescriptor *rp = wd->rpDescForSwapchain;
can now be written ca. like this, without pulling in quick-private:
QRhiSwapChain *swapchain = window->rendererInterface->getResource(window, RhiSwapchain)
QRhiCommandBuffer *cb = swapchain->currentFrameCommandBuffer();
QRhiRenderPassDescriptor *rp = swapchain->renderPassDescriptor();
This provides a more stable interface between the scenegraph and Quick 3D.
In addition, this is also handy for manual tests, external test applications, etc.
in case they do QRhi-based rendering in a QQuickWindow. Now these are also fine with
just gui-private, no need to access QQuickWindowPrivate anymore.
Change-Id: I921fb1c33c2fc77081272b1f180fdc2c87ed3ab5
Reviewed-by: Andy Nichols <andy.nichols@qt.io>
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Task-number: QTBUG-79925
Change-Id: Id3f0a688f47efaf1653c85d23ef49618ed09c931
Reviewed-by: Paul Olav Tvete <paul.tvete@qt.io>
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Change-Id: I50c6a5c7a55cfc481ff572113c58951983671cdc
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
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Important for Vulkan and (upcoming) examples like vulkanunderqml.
Change-Id: I5b6c978f38175eca76efe059aa83bb7158724752
Reviewed-by: Andy Nichols <andy.nichols@qt.io>
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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>
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Undocumented parameter 'window' in QSGRendererInterface::getResource()
Change-Id: I13cd520ad0b06abe1ad76be7aec83eae5c3e4d7c
Reviewed-by: Martin Smith <martin.smith@qt.io>
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This is an OpenVG backend for the Qt Quick 2 scenegraph.
Should be feature complete now, but there are still some issues that
could be improved in future commits:
If Rectangle nodes are rendered with a non-affine transform, they will
be rendered incorrectly. This is because paths expect affine
transformations.
The Glyph cache is a bit cheeky in that it's caching paths, but doing
so per font size. It shoudln't need to, but right now I've not though
up a good way of getting the transform/scale needed when rendering yet.
Change-Id: Ie3c4f2df35d14279b0f9f55e0e10a873328c025b
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
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Change-Id: I60e674760725d4c4dd13f53b31c3abb6b09c1790
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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Have to change getResource() a bit since it turns out it is not suitable
currently for backends that do not have a per-window rendercontext and do
not implement the interface on the rendercontext. Pass in the window to
make sure it can always figure out which window we want the resources for.
(we do not want rendererInterface() to return window-specific instances
created on the fly, with ownership issues, so stick with the simple model
where backends implement the interface on one of their existing classes)
To support clipping, QSGRenderNode::RenderState is extended accordingly.
Also updated the docs since some claims in the rendernode docs are not true
since Qt 5.3.
Change-Id: I34779c83926f5231b888fcab7131e873ae97964f
Reviewed-by: Andy Nichols <andy.nichols@qt.io>
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Fix formatting, wrong class names, and remove sprites as an unsupported
feature. Add a note about the glslcore file selector.
Change-Id: I2caffc4485157d053bb0fffa47fed8ee1d506774
Reviewed-by: Andy Nichols <andy.nichols@qt.io>
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rendererInterface() should not require isSceneGraphInitialized() to be
true - the API and language queries like graphicsApi() have no need for the
scenegraph, they only need the plugin to be loaded, i.e. that the QQuickWindow
is constructed.
This is the key to be able to make GraphicsInfo report graphicsApi and
shaderType with the correct values as early as possible - meaning as soon
as the item is associated with a window. The initialization of the
scenegraph (the exact timing of which varies backend to backend) does not
matter here.
The fragment and vertex shader property setting is now unified in the two
ShaderEffect implementations:
- If the component is complete, the shader is attempted to be processed
right from the setter.
- Otherwise the item will trigger processing once the component is
complete.
- If there is no window when processing is trigerred, it is deferred via
polish.
To implement item polish handling we need a new virtual in
QQuickItemPrivate since we cannot intrdouce virtuals into the public
classes.
This way one can write a condition (and later potentially use file
selectors) like this:
fragmentShader: GraphicsInfo.shaderType == GraphicsInfo.GLSL ? "..." : ...
without having to worry about getting an unintended value processed due to
GraphicsInfo not yet reporting an up-to-date value.
parseLog() forces, for GL at least, shader processing to prevent autotests
from breaking.
Change-Id: If55c69d746c29cd07348ddad2d6b0f2b5dd7f3a2
Reviewed-by: Andy Nichols <andy.nichols@qt.io>
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Some enums were missing.
Change-Id: I68ff3043eed247b659ccafeb7ee709dd94b653fb
Reviewed-by: Andy Nichols <andy.nichols@qt.io>
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Rename RendererInfo to GraphicsInfo. Deprecate OpenGLInfo and move
the surface format properties into GraphicsInfo. Move also the
shader info properties from ShaderEffect.
Change-Id: I3b3f01080e059b3a30a132fd67de19a4bfca54ef
Reviewed-by: Andy Nichols <andy.nichols@qt.io>
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Change-Id: I065f17abd1cb71cd8d6ead76abf7a544eb7a99c0
Reviewed-by: Andy Nichols <andy.nichols@qt.io>
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The D3D12 node implementation is mostly missing. The rest of the enablers
should be in place now however.
Importing QtQuick 2.8 provides new properties for ShaderEffect:
- shaderType can be used to decide which language should be used
- shaderCompilationType tells if compilation is runtime or offline
- shaderSourceType tells if the vertex/fragmentShader properties refer
to source strings or source files or pre-compiled bytecode files
The last two are bitmasks. In practice however we will support only
one approach per backend for now (runtime + source string for OpenGL,
offline + bytecode for D3D12).
In addition to QSGShaderEffectNode, introduce the QSGGuiThreadShaderEffectManager
interface. This provides the gui thread bits for the above and performs shader
reflection. Backends that use the new ShaderEffect system must provide both.
For each ShaderEffect item there will be a manager (on the gui thread) and
a node (on the render thread).
Reflection is expected to be done via standard helper libs (d3d12shader
+ D3DReflect from d3dcompiler for the D3D12 backend), or via manually inspecting
SPIR-V, or parsing the source (like the GL path does now), or by using some
3rd party library (not recommended). In any case we require that reflection is
doable on the gui thread without dependencies to the actual graphics API.
The ShaderEffect documentation is greatly extended, covering HLSL and the new
properties.
The test app uses manually compiled shaders on its HLSL path for now. This
is because there is no story yet for build system integration for public
use (the internal HLSL -> bytecode in C header rule is only suitable for
the d3d12 plugin itself, apps need something different).
Change-Id: Id112104906fbcb26b9902a35f19d8d509b340d1b
Reviewed-by: Andy Nichols <andy.nichols@qt.io>
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For non-OpenGL APIs the primary (and likely the only) way to add custom
rendering into the Qt Quick scene is via the render node. Other
approaches,like the before/afterRendering signals,
QQuickFramebufferObject, remain OpenGL-only. (although QQuickFramebufferObject
may get a multi-API replacement based on QSGRenderNode at a later time)
Note that this is not a generic 3D content integration enabler. It targets
creating 2D and 2.5D Quick items with custom rendering via the graphics
API in use.
Make QSGRenderNode public, enhance the docs a bit and add a releaseResources().
Add a QSGRendererInterface with a query function in QQuickWindow and
QSGEngine. The scenegraph adaptation can then return a custom implementation of
the interface. This will be necessary to query API-specific values, f.ex. the
ID3D12Device and ID3D12CommandList when running with the d3d12 backend.
The interface allows querying the API and void* resources. Resources that
we know about in advance are enum-based to prevent the
QPlatformNativeInterface-like ugliness of string keys.
Support is there in the batch renderer already, fix this up according to
the new public API, and implement the corresponding bits for the D3D12
renderer.
For D3D12, fix also an issue with QSGNode destruction where graphics resources
in use were attempted to be final-released without a proper wait.
The semantics of changedStates() in QSGRenderNode is changed so that it can be
called at any time, including before render(). This is very useful since we can
implement some state restoring in a more efficient manner.
Added a new example as well. Documentation for QSGRenderNode is heavily
expanded.
Change-Id: I4c4a261c55791d0e38743a784bc4c05a53b3462d
Reviewed-by: Andy Nichols <andy.nichols@qt.io>
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