Material Not visible after multiplying Constant3 by 0 Red

[anonymous_user_f926f2c0]

Hey, so I have a material setup that allows me to control the color using Constant3 Parameters. Have two texture which im multiplying by a Constant3 (Color) and then adding together before plugging into the Emissive Color node. However, if i multiply the second Texture with a value of 0 Red, the Preview and the In game material are not visible.

See screenshots. In First one i am multiplying by Constant3(1, 1, 0) which shows the yellow texture during the preview.
The second is multiplied by Constant3(0,1,0) which causes the preview to fail.

The Texture is using a Blend Mode of Additive.

[anonymous_user_f926f2c0]

Turns out the texture i was using didn’t have a alpha channel, so when i was multiplying the added textures to the alpha it was Zeroing out. Removing that fixed the issue.