Define a key color

Graphics and GPU Programming Programming

Started by pinard83 April 05, 2002 07:45 AM

2 comments, last by pinard83 22 years, 1 month ago

pinard83

122

Author

April 05, 2002 07:45 AM

How define a key color? Is there any other possibility to use mask? Thanks Pinard :"The warrior" !

Pinard :"The warrior" !

outRider

852

April 05, 2002 08:02 AM

Wherever your colorkey appears give that pixel an alpha value of 0, then glEnable(GL_ALPHA_TEST); and glAlphaFunc(GL_GREATER, 0); or glAlphaFunc(GL_GREATER, GL_ZERO); What that does is NOT draw any pixel with an alpha of 0, which your colorkey has, and thats that.

------------
- outRider -

pinard83

122

Author

April 05, 2002 08:41 AM

Your answer is not good. I want to make a mask with a texture, so I want to define a color key like you can do with Direct Draw.

Pinard :"The warrior" !

Pinard :"The warrior" !

Null and Void

1,088

April 05, 2002 08:46 AM

Color keys are not accelerated in 3D. Use alpha testing (or blending) like he told you to. For examples try searching the forums (this comes up a lot).