Note
Access to this page requires authorization. You can try signing in or changing directories.
Access to this page requires authorization. You can try changing directories.
The glClearIndex function specifies the clear value for the color-index buffers.
Syntax
void WINAPI glClearIndex(
GLfloat c
);
Parameters
-
c
-
The index used when the color-index buffers are cleared. The default value is zero.
Return value
This function does not return a value.
Error codes
The following error codes 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 glClearIndex function specifies the index used by glClear to clear the color-index buffers. The c parameter is not clamped. Rather, c is converted to a fixed-point value with unspecified precision to the right of the binary point. The integer part of this value is then masked with 2m - 1, where m is the number of bits in a color index stored in the framebuffer.
The following functions retrieve information related to glClearIndex:
glGet with argument GL_INDEX_CLEAR_VALUE
glGet with argument GL_INDEX_BITS
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows 2000 Professional [desktop apps only] |
| Minimum supported server |
Windows 2000 Server [desktop apps only] |
| Header |
|
| Library |
|
| DLL |
|