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GraphicsInfo QML Type

Provides information about the used Qt Quick backend.

This type was introduced in QtQuick 2.8.

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GraphicsInfo QML Type

  • Import Statement: import QtQuick 2.13

  • Since: QtQuick 2.8

  • Group: GraphicsInfo is part of qtquick-visual

Detailed Description

The GraphicsInfo attached type provides information about the scenegraph backend used to render the contents of the associated window.

If the item to which the properties are attached is not currently associated with any window, the properties are set to default values. When the associated window changes, the properties will update.

Property Documentation

 

api : enumeration

This property describes the graphics API that is currently in use.

The possible values are:

  • GraphicsInfo.Unknown - the default value when no active scenegraph is associated with the item

  • GraphicsInfo.Software - Qt Quick's software renderer based on QPainter with the raster paint engine

  • GraphicsInfo.OpenGL - OpenGL or OpenGL ES

  • GraphicsInfo.Direct3D12 - Direct3D 12

majorVersion : int

This property holds the major version of the graphics API in use.

With OpenGL the default version is 2.0.

See Also

See also minorVersion, profile

minorVersion : int

This property holds the minor version of the graphics API in use.

With OpenGL the default version is 2.0.

See Also

See also majorVersion, profile

profile : enumeration

This property holds the configured OpenGL context profile.

The possible values are:

  • GraphicsInfo.OpenGLNoProfile (default) - OpenGL version is lower than 3.2 or OpenGL is not in use.

  • GraphicsInfo.OpenGLCoreProfile - Functionality deprecated in OpenGL version 3.0 is not available.

  • GraphicsInfo.OpenGLCompatibilityProfile - Functionality from earlier OpenGL versions is available.

Reusable QML components will typically use this property in bindings in order to choose between core and non core profile compatible shader sources.

See Also

See also majorVersion, minorVersion, QSurfaceFormat

renderableType : enumeration

This property holds the renderable type. The value has no meaning for APIs other than OpenGL.

The possible values are:

  • GraphicsInfo.SurfaceFormatUnspecified (default) - Unspecified rendering method

  • GraphicsInfo.SurfaceFormatOpenGL - Desktop OpenGL or other graphics API

  • GraphicsInfo.SurfaceFormatOpenGLES - OpenGL ES

See Also

See also QSurfaceFormat

[since QtQuick 2.8] shaderCompilationType : enumeration

This property contains a bitmask of the shader compilation approaches supported by the Qt Quick backend the application is using.

With OpenGL the value is GraphicsInfo.RuntimeCompilation, which corresponds to the traditional way of using ShaderEffect. Non-OpenGL backends are expected to focus more on GraphicsInfo.OfflineCompilation, however.

The value is only up-to-date once the item is associated with a window. Bindings relying on the value have to keep this in mind since the value may change from 0 to the actual bitmask after component initialization is complete. This is particularly relevant for ShaderEffect items inside ShaderEffectSource items set as property values.

This property was introduced in QtQuick 2.8.

See Also

[since QtQuick 2.8] shaderSourceType : enumeration

This property contains a bitmask of the supported ways of providing shader sources.

With OpenGL the value is GraphicsInfo.ShaderSourceString, which corresponds to the traditional way of inlining GLSL source code into QML. Other, non-OpenGL Qt Quick backends may however decide not to support inlined shader sources, or even shader sources at all. In this case shaders are expected to be pre-compiled into formats like SPIR-V or D3D shader bytecode.

The value is only up-to-date once the item is associated with a window. Bindings relying on the value have to keep this in mind since the value may change from 0 to the actual bitmask after component initialization is complete. This is particularly relevant for ShaderEffect items inside ShaderEffectSource items set as property values.

This property was introduced in QtQuick 2.8.

See Also

[since QtQuick 2.8] shaderType : enumeration

This property contains the shading language supported by the Qt Quick backend the application is using.

The value is only up-to-date once the item is associated with a window. Bindings relying on the value have to keep this in mind since the value may change from GraphicsInfo.UnknownShadingLanguage to the actual value after component initialization is complete. This is particularly relevant for ShaderEffect items inside ShaderEffectSource items set as property values.

This property was introduced in QtQuick 2.8.

See Also

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