The WebGL2RenderingContext.copyTexSubImage3D() method of the WebGL API copies pixels from the current WebGLFramebuffer into an existing 3D texture sub-image.

target

A GLenum specifying the binding point (target) of the active texture. Possible values:

• gl.TEXTURE_3D: A three-dimensional texture.
• gl.TEXTURE_2D_ARRAY: A two-dimensional array texture.

level

A GLint specifying the level of detail. Level 0 is the base image level and level n is the n-th mipmap reduction level.

xoffset

A GLint specifying the x offset within the texture image.

yoffset

A GLint specifying the y offset within the texture image.

zoffset

A GLint specifying the z offset within the texture image.

x

A GLint specifying the x coordinate of the lower left corner where to start copying.

y

A GLint specifying the y coordinate of the lower left corner where to start copying.

width

A GLsizei specifying the width of the texture.

height

A GLsizei specifying the height of the texture.

None (undefined).

• WebGLRenderingContext.copyTexImage2D()
• WebGLRenderingContext.texImage2D()
• WebGLRenderingContext.texSubImage2D()
• WebGLRenderingContext.compressedTexImage2D()