Transparency is not working with QuadRenderer and AlphaBlendPremultiplied

vvvv gamma bug
1

Premultiply Alpha is the default setting of FileTexture . But Transparency is not working with AlphaBlendPremultiplied.

image
image800×304 56 KB

AlphaBlendPremultiplied.vl (20.8 KB)

2

I looks like a problem with the shader used in the Quad. it does a simple multiplication with the tint color (where you set the alpha), but the multiplication with the tint is essentially a color blend operation that works differently for pre or non-pre multiplied colors.

so consider this a bug, we have to add the premultiplied blend op to the shader that does the multiplication with the texture.