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QuickDraw 3D RAVE / QuickDraw 3D RAVE Reference

Constants

Buffer Drawing Operations

A drawing engine may support an OpenGL buffer drawing mode that determines which color buffers a drawing engine draws into. You specify one or more buffers by assigning a value to the kQATagGL_DrawBuffer state variable of that engine. The default value of this variable for a drawing engine that supports OpenGL buffering is kQAGL_DrawBuffer_Front for single-buffered contexts and kQAGL_DrawBuffer_Back for double-buffered contexts. You can use the following masks to specify a buffer drawing mode.

#define kQAGL_DrawBuffer_None          0
#define kQAGL_DrawBuffer_FrontLeft     (1 << 0)
#define kQAGL_DrawBuffer_FrontRight    (1 << 1)
#define kQAGL_DrawBuffer_BackLeft      (1 << 2)
#define kQAGL_DrawBuffer_BackRight     (1 << 3)
#define kQAGL_DrawBuffer_Front         \
      (kQAGL_DrawBuffer_FrontLeft | kQAGL_DrawBuffer_FrontRight)
#define kQAGL_DrawBuffer_Back          \
      (kQAGL_DrawBuffer_BackLeft | kQAGL_DrawBuffer_BackRight)

Constant descriptions

kQAGL_DrawBuffer_None

The drawing engine draws into no color buffer.

kQAGL_DrawBuffer_FrontLeft

The drawing engine draws into the front left buffer only.

kQAGL_DrawBuffer_FrontRight

The drawing engine draws into the front right buffer only.

kQAGL_DrawBuffer_BackLeft

The drawing engine draws into the back left buffer only.

kQAGL_DrawBuffer_BackRight

The drawing engine draws into the back right buffer only.

kQAGL_DrawBuffer_Front

The drawing engine draws into the front left and right buffers only.

kQAGL_DrawBuffer_Back

The drawing engine draws into the back left and right buffers only.