glClearDepth — specify the clear value for the depth buffer
void glClearDepth( | GLclampd | depth); |
depthSpecifies the depth value used when the depth buffer is cleared. The initial value is 1.
glClearDepth specifies the depth value used by glClear to clear the depth buffer.
Values specified by glClearDepth are clamped to the range
GL_INVALID_OPERATION is generated if glClearDepth
is executed between the execution of glBegin
and the corresponding execution of glEnd.
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