WebGL2RenderingContext: blitFramebuffer() method

Note: This feature is available in Web Workers.

The WebGL2RenderingContext.blitFramebuffer() method of the WebGL 2 API transfers a block of pixels from the read framebuffer to the draw framebuffer. Read and draw framebuffers are bound using WebGLRenderingContext.bindFramebuffer().

Syntax

js
blitFramebuffer(srcX0, srcY0, srcX1, srcY1,
                dstX0, dstY0, dstX1, dstY1,
                mask, filter)

Parameters

srcX0, srcY0, srcX1, srcY1

A GLint specifying the bounds of the source rectangle.

dstX0, dstY0, dstX1, dstY1

A GLint specifying the bounds of the destination rectangle.

mask

A GLbitfield specifying a bitwise OR mask indicating which buffers are to be copied. Possible values:

filter

A GLenum specifying the interpolation to be applied if the image is stretched. Possible values:

Return value

None (undefined).

Examples

js
gl.blitFramebuffer(
  0,
  0,
  canvas.width,
  canvas.height,
  0,
  0,
  canvas.width,
  canvas.height,
  gl.COLOR_BUFFER_BIT,
  gl.NEAREST,
);

Specifications

See also