glClearAccum

The glClearAccum function clears values for the accumulation buffer.

void glClearAccum(
  GLfloat red,    
  GLfloat green,  
  GLfloat blue,   
  GLfloat alpha   
);

Parameters

red, green, blue, alpha
The red, green, blue, and alpha values used when the accumulation buffer is cleared. The default values are all zero.

Remarks

The glClearAccum function specifies the red, green, blue, and alpha values used by glClear to clear the accumulation buffer.

Values specified by glClearAccum are clamped to the range [ – 1,1].

The following function retrieves information related to glClearAccum:

glGet with argument GL_ACCUM_CLEAR_VALUE

Error Codes

The following are the error codes generated and their conditions.

Error Code Condition
GL_INVALID_OPERATION glClearAccum was called between a call to glBegin and the corresponding call to glEnd

QuickInfo

  Windows NT: Use version 3.5 and later.
  Windows: Use Windows 95 and later.
  Windows CE: Unsupported.
  Header: Declared in gl.h.
  Import Library: Link with opengl32.lib.

See Also

glBegin, glClear, glEnd, glGet