1. Initialize |state|'s {{XRRenderState/depthFar}} to <code>1000.0</code>.

1. Initialize |state|'s {{XRRenderState/inlineVerticalFieldOfView}} based on the following:

<dl class="switch">

<dd> Initialize |state|'s {{XRRenderState/inlineVerticalFieldOfView}} to <code>PI * 0.5</code>.

</dl>

1. Initialize |state|'s {{XRRenderState/baseLayer}} to <code>null</code>.

1. If |space|'s [=XRSpace/session=] does not equal |session|, throw an {{InvalidStateError}} and abort these steps.

1. If |baseSpace|'s [=XRSpace/session=] does not equal |session|, throw an {{InvalidStateError}} and abort these steps.

1. Check if [=poses may be reported=] and, if not, throw a {{SecurityError}} and abort these steps.

1. Let |transform| be |pose|'s {{XRPose/transform}}.

1. Query the [=/XR device=]'s tracking system for |space|'s pose relative to |baseSpace| at the time represented by |frame|, then perform the following steps:

<dl class="switch">

1. If |type| is {{viewer}}, return <code>true</code>.

1. If |type| is {{local}} or {{local-floor}}, and |session| is an [=immersive session=], return <code>true</code>.

1. If |type| is {{local}} or {{local-floor}}, and the [=XRSession/XR device=] supports reporting orientation data, return <code>true</code>.

1. If |type| is {{unbounded}}, |session| is an [=immersive session=], and the [=XRSession/XR device=] supports stable tracking near the user over an unlimited distance, return <code>true</code>.

1. Return <code>false</code>.

</dl>

1. Initialize |layer|'s [=XRWebGLLayer/composition disabled=] boolean as follows:

<dl class="switch">

<dd> Initialize |layer|'s [=XRWebGLLayer/composition disabled=] to <code>true</code>

</dl>

1. <dl class="switch">

<dt> If |layer|'s [=XRWebGLLayer/composition disabled=] boolean is <code>false</code>: