WebGL2RenderingContext.blitFramebuffer

The WebGL2RenderingContext.blitFramebuffer() method of the WebGL 2 API transfers a block of pixels from the read framebuffer to the draw framebuffer.

Syntax

void gl.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.

Examples

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

Specifications

Browser compatibility

See also

• WebGLRenderingContext.getRenderbufferParameter()