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Texture2DArray (WebGL2)

A Texture2DArray holds a array of textures of the same size and format. The entire array can be passed to the shader which uses an extra texture coordinate to sample from. A core feature of Texture2DArrays is that the entire array can passed as a single uniform to and accessed in a GLSL shader.

Texture arrays can be used as texture atlases if all textures are of the same size and format.

Most texture related functionality is implemented by and documented on the Texture base class. For additional information, see OpenGL Wiki.

Usage

Create a new texture array

if (Texture2DArray.isSupported()) {
  textureArray = new Texture2DArray(gl, {...});
}

Members

handle - The underlying WebGLTexture
target - Always GL.TEXTURE_2D_ARRAY
depth - the number of textures in the array
width - width of the textures
height - height of the textures
format - format of the textures

Methods

Texture2DArray is a subclass of the Texture and Resource classes and inherit all methods and members of those classes.

Texture2DArray.isSupported(gl)

Returns true if the context supports creation of Texture2DArrays.

constructor

new Texture2DArray(gl, {parameters});

Limits

GL.MAX_ARRAY_TEXTURE_LAYERS - The maximum number of textures in the array (at least 256).

Remarks

The maximum number of textures in the array is implementation defined, it can be queried via GL.MAX_ARRAY_TEXTURE_LAYERS (at least 256).

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