The read-only depthStencilTexture
property of the XRWebGLSubImage
interface represents the depth/stencil WebGLTexture
object for the XRCompositionLayer
to render.
The depthStencilTexture
property can be passed to WebGL2RenderingContext.framebufferTextureLayer()
to attach the depth 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,
);
}
}