compressedTexSubImage2D method
      
void
compressedTexSubImage2D()
      
     
    
The WebGLRenderingContext.compressedTexSubImage2D()
method of the
WebGL API
specifies a
two-dimensional sub-rectangle for a texture image in a compressed format.
Compressed image formats must be enabled by WebGL extensions before using this method or a WebGL2RenderingContext must be used.
Implementation
external void compressedTexSubImage2D(
  GLenum target,
  GLint level,
  GLint xoffset,
  GLint yoffset,
  GLsizei width,
  GLsizei height,
  GLenum format,
  ArrayBufferView data,
);