blend_color
Extends blending capability - use in combination with
glBlendFunc()
.
Allows the definition of a constant color (rgba) for use in blending equations.
void
glBlendColorEXT
( clampf red, clampf green, clampf blue, clampf alpha);
Tuning tip:
Set alpha through blend color to allow for constant alpha blend of one RGB image with another (avoid need to specify alpha per pixel).