GLCLEARCOLOR(3G) | GLCLEARCOLOR(3G) |
glClearColor - specify clear values for the color buffers
void glClearColor( GLclampf red,
GLclampf green, GLclampf blue, GLclampf alpha )
glClearColor specifies the red, green, blue, and alpha values used by glClear to clear the color buffers. Values specified by glClearColor are clamped to the range [0, 1].
GL_INVALID_OPERATION is generated if glClearColor is executed between the execution of glBegin and the corresponding execution of glEnd.
glGet with argument GL_COLOR_CLEAR_VALUE
glClear