Gradient Alpha Blending

Graphics and GPU Programming Programming

Started by dave September 25, 2004 03:17 PM

1 comment, last by DrunkenHyena 19 years, 7 months ago

2,188

Author

September 25, 2004 03:17 PM

Hi, If i have an image in PNG format, how do i gradient the trans parency of the image so one side is 100% opaque and the other side is 100% transparent? I know how to do basic blending using the render states but imnot sure what the source and destination modes should be. thanks for any replies, ace

uavfun

744

September 25, 2004 03:28 PM

1) Open up the PNG in an image editting program and put a gradient in the alpha channel

or

2) Use individual vertex colours. Set the alpha to 100% on one side and 0 on the other.

DrunkenHyena

805

September 26, 2004 02:21 AM

Quote:Original post by ace_lovegrove
I know how to do basic blending using the render states but imnot sure what the source and destination modes should be.

Typically SrcBlend = SrcAlpha, DestBlend = InvSrcAlpha

but really it depends on the effect you're trying to achieve

Stay Casual,KenDrunken Hyena