GL_NV_scissor_exclusive
https://www.khronos.org/registry/OpenGL/extensions/NV/NV_scissor_exclusive.txt
GL_NV_scissor_exclusive

	GL_SCISSOR_TEST_EXCLUSIVE_NV 0x9555
	GL_SCISSOR_BOX_EXCLUSIVE_NV 0x9556
	void glScissorExclusiveArrayvNV (GLuint first, GLsizei count, const GLint* v)
	void glScissorExclusiveNV (GLint x, GLint y, GLsizei width, GLsizei height)