glClearAccum function
The glClearAccum function specifies the clear values for the accumulation buffer.
Syntax
void WINAPI glClearAccum(
GLfloat red,
GLfloat green,
GLfloat blue,
GLfloat alpha
);
Parameters
-
red
-
The red value used when the accumulation buffer is cleared. The default value is zero.
-
green
-
The green value used when the accumulation buffer is cleared. The default value is zero.
-
blue
-
The blue value used when the accumulation buffer is cleared. The default value is zero.
-
alpha
-
The alpha value used when the accumulation buffer is cleared. The default value is zero.
Return value
This function does not return a value.
Error codes
The following error code can be retrieved by the glGetError function.
| Name | Meaning |
|---|---|
|
The function was called between a call to glBegin and the corresponding call to glEnd. |
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
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows 2000 Professional [desktop apps only] |
| Minimum supported server |
Windows 2000 Server [desktop apps only] |
| Header |
|
| Library |
|
| DLL |
|