Subtractive Blending availability test GLboolean glaf_IsBlendSubtractSupported(void) This function returns GL_TRUE if the feature is supported or
GL_FALSE
otherwise.
Calling the functions of an unsupported feature or using its enumerants
may crash the application, or generate OpenGL errors, or even undefined
behaviour, so you should never use a feature without testing its availability
first.
Subtractive Blending support rules
(Add either a 'GLAF_' or 'GL_' prefix before each enumerant. GLAF enumerants are always defined, while GL ones depend on the version of your include files). FUNC_ADD
Subtractive Blending functions glaf_BlendEquation
Subtractive Blending definitions in 'gl2glaf.h' (optional) #define glBlendEquation
glaf_BlendEquation
Subtractive Blending side effects None. |
Copyright (C) 2001 César Blecua Udías