3D Graphics Programming with QuickDraw 3D 1.5.4

Gestalt Fast Features Response Masks

When you pass the kQAGestalt_FastFeatures selector to the QAEngineGestalt function, QAEngineGestalt returns (through its response parameter) a value that indicates which, if any, features supported by a drawing engine are accelerated. You can use these masks to test that value for a specific feature. The bits corresponding to accelerated features are ORed together to determine the returned value.

A feature is considered accelerated if it is performed substantially faster by the drawing engine than it would be if performed in software only.



 
#define kQAFast_None                                0

#define kQAFast_Line                                (1 << 0)

#define kQAFast_Gouraud                             (1 << 1)

#define kQAFast_Texture                             (1 << 2)

#define kQAFast_TextureHQ                           (1 << 3)

#define kQAFast_Blend                               (1 << 4)

#define kQAFast_Antialiasing                        (1 << 5)

#define kQAFast_ZSorted                             (1 << 6)

#define kQAFast_CL4                                 (1 << 7)

#define kQAFast_CL8                                 (1 << 8)

Constant descriptions

kQAFast_None: This value is returned if the drawing engine accelerates no features.
kQAFast_Line: This bit is set if the drawing engine accelerates line drawing.
kQAFast_Gouraud: This bit is set if the drawing engine accelerates Gouraud shading.
kQAFast_Texture: This bit is set if the drawing engine accelerates texture mapping.
kQAFast_TextureHQ: This bit is set if the drawing engine accelerates high-quality texture mapping.
kQAFast_Blend: This bit is set if the drawing engine accelerates transparency blending.
kQAFast_Antialiasing: This bit is set if the drawing engine accelerates antialiasing.
kQAFast_ZSorted: This bit is set if the drawing engine accelerates z sorted rendering.
kQAFast_CL4: This bit is set if the drawing engine accelerates kQAPixel_CL4 pixel type rendering.
kQAFast_CL8: This bit is set if the drawing engine accelerates kQAPixel_CL8 pixel type rendering.