XRWebGLSubImage: colorTexture property

Limited availability

The read-only colorTexture property of the XRWebGLSubImage interface represents the color WebGLTexture object for the XRCompositionLayer to render.

Value

An opaque WebGLTexture. See WebXR opaque textures for details.

Examples

Using colorTexture

The colorTexture property can be passed to framebufferTextureLayer() to attach the color texture to a framebuffer.

const xrGlBinding = new XRWebGLBinding(xrSession, gl);
const layer = xrGlBinding.createProjectionLayer({
  textureType: "texture-array",
});
const framebuffer = gl.createFramebuffer();

xrSession.updateRenderState({ layers: [layer] });
xrSession.requestAnimationFrame(onXRFrame);

function onXRFrame(time, xrFrame) {
  xrSession.requestAnimationFrame(onXRFrame);

  gl.bindFramebuffer(gl.FRAMEBUFFER, framebuffer);
  const viewport = xrGlBinding.getSubImage(layer, xrFrame).viewport;
  gl.viewport(viewport.x, viewport.y, viewport.width, viewport.height);

  for (const view in xrViewerPose.views) {
    const subImage = xrGlBinding.getViewSubImage(layer, view);
    gl.framebufferTextureLayer(
      gl.FRAMEBUFFER,
      gl.COLOR_ATTACHMENT0,
      subImage.colorTexture,
      0,
      subImage.imageIndex,
    );
    gl.framebufferTextureLayer(
      gl.FRAMEBUFFER,
      gl.DEPTH_ATTACHMENT,
      subImage.depthStencilTexture,
      0,
      subImage.imageIndex,
    );

    // Render from the viewpoint of xrView
  }
}

Specifications

Browser compatibility

See also

• framebufferTextureLayer()