QT 3D Transparent Texture (Alpha)

[Cupras]

Hello everyone,

i want to render some text with a texture.
The texture is a png-File with blue letters and transparent background.

If i render those texture, the background is not transparent but white.
I tried it with the "QNormalDiffuseSpecularMapAlphaMaterial" and the other material classes.

How can i render the texture with an transparent background?

thanks in advance, Markus