03/18/2003
15-462 Graphics I
4
Blending in OpenGL
•Enable
blending
•Set up
source and destination factors
•Source
and destination choices
–GL_ONE, GL_ZERO
–GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA
–GL_DST_ALPHA, GL_ONE_MINUS_DST_ALPHA
glEnable(GL_BLEND);
glBlendFund(source_factor, dest_factor);