Qt3D 2.0 (+QML) simple shader doesn't appear to work

[KitizzDev]

I have a basic scene using Qt3D 2.0. It has a cube and a Material like in the following code. And the fragment shader just sets fragColor = vec4(1.0, 0.0, 0.0, 1.0). But no matter how I rearrange things, I get the default brown-yellow color. I can confirm that the shaders themselves are being properly loaded.

Full example project: https://drive.google.com/file/d/0B-ZerBBuuf3tclNDSUNCVWRzNVE/view?usp=sharing

Material {
    id: material
    effect: Effect {
        techniques: [
            Technique {
                openGLFilter {
                    api: OpenGLFilter.Desktop
                    profile: OpenGLFilter.Core
                    majorVersion: 3; minorVersion: 1
                }

                renderPasses: [
                    RenderPass {
                        shaderProgram: ShaderProgram {
                            vertexShaderCode:   loadSource( "qrc:/shader.vert" )
                            fragmentShaderCode: loadSource( "qrc:/shader.frag" )
                        }
                    }
                ]
            }
        ]
    }
}

I know I'm working at the bleeding edge. I'm not sure if this is a bug, or something that I'm not quite doing right.