Update spec for new eye params interface

webvr.bs

@@ -117,32 +117,32 @@ interface VRDevice {
 The {{HMDVRDevice}} interface represents a {{VRDevice}} for a head-mounted display. It contains configuration and information about the HMD.
 
 <pre class="idl">
-interface HMDVRDevice : VRDevice {
- /* The translation that should be applied to the view matrix for rendering each eye */
- DOMPoint getEyeTranslation(VREye whichEye);
-
- // the FOV that the HMD was configured with
- VRFieldOfView getCurrentEyeFieldOfView(VREye whichEye);
-
- // the recommended FOV, per eye.
- VRFieldOfView getRecommendedEyeFieldOfView(VREye whichEye);
+interface EyeParameters {
+ /* These values are expected to be static per-device/per-user */
+ readonly attribute VRFieldOfView minimumFieldOfView;
+ readonly attribute VRFieldOfView maximumFieldOfView;
+ readonly attribute VRFieldOfView recommendedFieldOfView;
+ readonly attribute DOMPoint eyeTranslation;
+
+ /* These values will vary after a FOV has been set */
+ readonly attribute VRFieldOfView currentFieldOfView;
+ readonly attribute DOMRect renderRect;
+};
 
- // the maximum FOV, per eye. Above this, rendering will look broken.
- VRFieldOfView getMaximumEyeFieldOfView(VREye whichEye);
+interface HMDVRDevice : VRDevice {
+ /* Return the parameters for the given eye */
+ EyeParameters getEyeParameters(VREye whichEye);
 
- // Set a field of view. If either of the fields of view is null,
- // or if their values are all zeros, then the recommended field of view
- // for that eye will be used.
+ /* Set a field of view for both eyes. If either of the fields of view is null,
+ * or if their values are all zeros, then the recommended field of view
+ * for that eye will be used.
+ *
+ * zNear and zFar configure the depth range for CSS-based rendering.
+ */
  void setFieldOfView(optional VRFieldOfViewInit leftFOV,
  optional VRFieldOfViewInit rightFOV,
  optional double zNear = 0.01,
  optional double zFar = 10000.0);
-
- // return a recommended rect for this eye. Only useful for Canvas rendering,
- // the x/y coordinates will be the location in the canvas where this eye should
- // begin, and the width/height are the dimensions. Any canvas in the appropriate
- // ratio will work.
- DOMRect getRecommendedEyeRenderRect(VREye whichEye);
 };
 </pre>