WebGL API: Types

The following types are used in WebGL interfaces.

WebGL 1

These types are used within a WebGLRenderingContext.

Type	Web IDL type	Description
GLenum	unsigned long	Used for enums. See also the list of constants.
GLboolean	boolean	A Boolean.
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 twos complement unsigned integer.
GLushort	unsigned short	16-bit twos complement unsigned integer.
GLuint	unsigned long	32-bit twos complement unsigned integer.
GLfloat	unrestricted float	32-bit IEEE floating point number.
GLclampf	unrestricted float	Clamped 32-bit IEEE floating point number.

WebGL 2

These types are used within a WebGL2RenderingContext. All WebGL 1 types are used as well.

Type	Web IDL type	Description
GLint64	long long	Signed 64-bit integer number.

WebGL extensions

These types are used within WebGL extensions.

Type	Web IDL type	Description
GLuint64EXT	long long	Unsigned 64-bit integer number.

Specifications

Specification	Status	Comment
WebGL 1.0 The definition of 'Types' in that specification.	Recommendation	Initial definition
WebGL 2.0 The definition of 'Types' in that specification.	Editor's Draft	Defines additional types.
EXT_disjoint_timer_query The definition of 'GLuint64EXT' in that specification.	Working Draft	Adds GLuint64EXT

Browser compatibility

See also

• WebGLRenderingContext