WebGL2RenderingContext: blitFramebuffer() method

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

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:

gl.COLOR_BUFFER_BIT
gl.DEPTH_BUFFER_BIT
gl.STENCIL_BUFFER_BIT

filter

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

gl.NEAREST
gl.LINEAR

Return value

None (undefined).

Examples

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

Specifications

Specification
WebGL 2.0 Specification # 3.7.4

Browser compatibility

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