Technique QML Type

Encapsulates a Technique. More...

• List of all members, including inherited members

Properties

• filterKeys : list<FilterKey>
• graphicsApiFilter : GraphicsApiFilter
• parameters : list<Parameter>
• renderPasses : list<RenderPass>

Detailed Description

A Technique specifies a set of RenderPass objects, FilterKey objects, Parameter objects and a GraphicsApiFilter, which together define a rendering technique the given graphics API can render. The filter keys are used by TechniqueFilter to select specific techniques at specific parts of the FrameGraph. A Parameter defined on a Technique overrides parameter (of the same name) defined in RenderPass, but are overridden by parameter in RenderPassFilter, TechniqueFilter, Material and Effect.

When creating an Effect that targets several versions of a graphics API, it is useful to create several Technique nodes each with a graphicsApiFilter set to match one of the targeted versions. At runtime, the Qt3D renderer will select the most appropriate Technique based on which graphics API versions are supported and (if specified) the FilterKey nodes that satisfy a given TechniqueFilter in the FrameGraph.

Technique {
    id: gl3Technique
    parameters: [
        Parameter { name: "color"; value: "orange" }
    ]
    filterKeys: [
        FilterKey { name: "renderingStyle"; value: "forward" }
    ]
    graphicsApiFilter: {
        api: GraphicsApiFilter.OpenGL
        profile: GraphicsApiFilter.CoreProfile
        majorVersion: 3
        minorVersion: 1
    }
    renderPasses: [
        RenderPass {
            id: firstPass
            shaderProgram: ShaderProgram {
                // ...
            }
        },
        RenderPass {
            id: secondPass
            shaderProgram: ShaderProgram {
                // ...
            }
        }
    ]
}

See also Effect, RenderPass, and TechniqueFilter.

Property Documentation