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Type	Web IDL type	Description
`GLenum`	`unsigned long`	Used for enums. See also the list of constants.
`GLboolean`	`boolean`	A boolean value.
`GLbitfield`	`unsigned long`	A bit field that stores multiple, logical bits. Used for example in `WebGLRenderingContext.clear()`.
`GLbyte`	`byte`	8-bit twos complement signed integer.
`GLshort`	`short`	16-bit twos complement signed integer.
`GLint`	`long`	32-bit twos complement signed integer.
`GLsizei`	`long`	Used for sizes (e.g., width and height of the drawing buffer).
`GLintptr`	`long long`	Special type for pointer arithmetic.
`GLsizeiptr`	`long long`	Special type for pointer arithmetic.
`GLubyte`	`octet`	8-bit unsigned integer.
`GLushort`	`unsigned short`	16-bit unsigned integer.
`GLuint`	`unsigned long`	32-bit unsigned integer.
`GLfloat`	`unrestricted float`	32-bit IEEE floating point number.
`GLclampf`	`unrestricted float`	Clamped 32-bit IEEE floating point number.

WebGL types