Blending in OpenGL
•
glEnable
(GL_BLEND)
•
glBlendFunc
(source_factor, destination_factor)
–
GL_ONE, GL_ZERO, GL_SRC_ALPHA,
GL_ONE_MINUS_SRC_ALPHA, GL_DST_ALPHA,
GL_ONE_MINUS_DST_ALPHA
•
Eg:
glBlendFunc
(GL_SRC_ALPHA,
GL_ONE_MINUS_SRC_ALPHA)
–
–
Demo
Graphics Hardware
Vector/Raster Graphics