Baseline Widely available
Note: This feature is available in Web Workers.
The WebGL2RenderingContext.invalidateSubFramebuffer() method of the WebGL 2 API invalidates portions of the contents of attachments in a framebuffer.
invalidateSubFramebuffer(target, attachments, x, y, width, height)
target
A GLenum specifying the binding point (target). Possible values:
gl.FRAMEBUFFER
Collection buffer data storage of color, alpha, depth and stencil buffers used to render an image.
gl.DRAW_FRAMEBUFFER
Equivalent to gl.FRAMEBUFFER.
gl.READ_FRAMEBUFFER
Used as a source for reading operations.
attachments
An Array of GLenum specifying the attachment points to invalidate. Possible values:
gl.COLOR_ATTACHMENT{0-15}
Invalidates one of the framebuffer's color buffers.
gl.DEPTH_ATTACHMENT
Invalidates the framebuffer's depth buffer.
gl.STENCIL_ATTACHMENT
Invalidates the framebuffer's stencil buffer.
gl.DEPTH_STENCIL_ATTACHMENT
Invalidates both the framebuffer's depth and stencil buffer.
x
A GLint specifying the left origin of the pixel rectangle to invalidate.
y
A GLint specifying the bottom origin of the pixel rectangle to invalidate.
width
A GLsizei specifying the width of the pixel rectangle to invalidate.
height
A GLsizei specifying the height of the pixel rectangle to invalidate.
None (undefined).
gl.invalidateSubFramebuffer(
gl.READ_FRAMEBUFFER,
[gl.COLOR_ATTACHMENT0, gl.COLOR_ATTACHMENT1],
0,
0,
256,
256,
);
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