VRFrameData

这是 实验性技术
检查 浏览器兼容性表格 在生产中使用这之前。

VRFrameData interface of the WebVR API represents all the information needed to render a single frame of a VR scene; constructed by VRDisplay.getFrameData() .

构造函数

VRFrameData.VRFrameData()
创建 VRFrameData object instance.

特性

VRFrameData.leftProjectionMatrix 只读
A Float32Array representing a 4x4 matrix that describes the projection to be used for the left eye’s rendering.
VRFrameData.leftViewMatrix 只读
A Float32Array representing a 4x4 matrix that describes the view transform to be used for the left eye’s rendering.
VRFrameData.pose 只读
VRPose of the VRDisplay 在当前 VRFrameData.timestamp .
VRFrameData.rightProjectionMatrix 只读
A Float32Array representing a 4x4 matrix that describes the projection to be used for the right eye’s rendering.
VRFrameData.rightViewMatrix 只读
A Float32Array representing a 4x4 matrix that describes the view transform to be used for the right eye’s rendering.
VRFrameData.timestamp 只读
A constantly increasing timestamp value representing the time a frame update occurred.

范例

var frameData = new VRFrameData();
var vrDisplay;
navigator.getVRDisplays().then(function(displays) {
  vrDisplay = displays[0];
  console.log('Display found');
  // Starting the presentation when the button is clicked: It can only be called in response to a user gesture
  btn.addEventListener('click', function() {
    vrDisplay.requestPresent([{ source: canvas }]).then(function() {
      drawVRScene();
    });
  });
});
// WebVR: Draw the scene for the WebVR display.
function drawVRScene() {
  // WebVR: Request the next frame of the animation
  vrSceneFrame = vrDisplay.requestAnimationFrame(drawVRScene);
  // Populate frameData with the data of the next frame to display
  vrDisplay.getFrameData(frameData);
  // You can get the position, orientation, etc. of the display from the current frame's pose
  // curFramePose is a VRPose object
  var curFramePose = frameData.pose;
  var curPos = curFramePose.position;
  var curOrient = curFramePose.orientation;
  // Clear the canvas before we start drawing on it.
  gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
  // WebVR: Create the required projection and view matrix locations needed
  // for passing into the uniformMatrix4fv methods below
  var projectionMatrixLocation = gl.getUniformLocation(shaderProgram, "projMatrix");
  var viewMatrixLocation = gl.getUniformLocation(shaderProgram, "viewMatrix");
  // WebVR: Render the left eye’s view to the left half of the canvas
  gl.viewport(0, 0, canvas.width * 0.5, canvas.height);
  gl.uniformMatrix4fv(projectionMatrixLocation, false, frameData.leftProjectionMatrix);
  gl.uniformMatrix4fv(viewMatrixLocation, false, frameData.leftViewMatrix);
  drawGeometry();
  // WebVR: Render the right eye’s view to the right half of the canvas
  gl.viewport(canvas.width * 0.5, 0, canvas.width * 0.5, canvas.height);
  gl.uniformMatrix4fv(projectionMatrixLocation, false, frameData.rightProjectionMatrix);
  gl.uniformMatrix4fv(viewMatrixLocation, false, frameData.rightViewMatrix);
  drawGeometry();
  function drawGeometry() {
    // draw the view for each eye
  }
    ...
  // WebVR: Indicate that we are ready to present the rendered frame to the VR display
  vrDisplay.submitFrame();
}
					

注意 : You can see this complete code at raw-webgl-example .

规范

规范 状态 Comment
WebVR 1.1
The definition of 'VRDisplayEvent' in that specification.
草案 初始定义

浏览器兼容性

更新 GitHub 上的兼容性数据
Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari Android webview Chrome for Android Firefox for Android Opera for Android Safari on iOS Samsung Internet
VRFrameData
弃用
Chrome No Edge ≤18 — 79 Firefox 55
55
Windows support was enabled in Firefox 55.
64
macOS support was enabled in Firefox 64.
IE No Opera ? Safari No WebView Android No Chrome Android 56 — 80
Disabled
不支持 56 — 80
Disabled
Only works in an experimental version of Chrome . (Other builds won't return any devices when Navigator.getVRDisplays() is invoked.)
Daydream View supported in Chrome 56.
Google Cardboard supported in Chrome 57.
Disabled From version 56 until version 80 (exclusive): this feature is behind the WebVR preference. To change preferences in Chrome, visit chrome://flags.
Firefox Android 55 Opera Android ? Safari iOS ? Samsung Internet Android 6.0
6.0
Google Cardboard supported in Samsung Internet 7.0.
VRFrameData() 构造函数
弃用
Chrome No Edge ≤18 — 79 Firefox 55
55
Windows support was enabled in Firefox 55.
64
macOS support was enabled in Firefox 64.
IE No Opera ? Safari No WebView Android No Chrome Android 56 — 80
Disabled
不支持 56 — 80
Disabled
Only works in an experimental version of Chrome . (Other builds won't return any devices when Navigator.getVRDisplays() is invoked.)
Daydream View supported in Chrome 56.
Google Cardboard supported in Chrome 57.
Disabled From version 56 until version 80 (exclusive): this feature is behind the WebVR preference. To change preferences in Chrome, visit chrome://flags.
Firefox Android 55 Opera Android ? Safari iOS ? Samsung Internet Android 6.0
6.0
Google Cardboard supported in Samsung Internet 7.0.
leftProjectionMatrix
弃用
Chrome No Edge 15 — 79 Firefox 55
55
Windows support was enabled in Firefox 55.
64
macOS support was enabled in Firefox 64.
IE No Opera ? Safari No WebView Android No Chrome Android 56 — 80
Disabled
不支持 56 — 80
Disabled
Only works in an experimental version of Chrome . (Other builds won't return any devices when Navigator.getVRDisplays() is invoked.)
Daydream View supported in Chrome 56.
Google Cardboard supported in Chrome 57.
Disabled From version 56 until version 80 (exclusive): this feature is behind the WebVR preference. To change preferences in Chrome, visit chrome://flags.
Firefox Android 55 Opera Android ? Safari iOS ? Samsung Internet Android 6.0
6.0
Google Cardboard supported in Samsung Internet 7.0.
leftViewMatrix
弃用
Chrome No Edge 15 — 79 Firefox 55
55
Windows support was enabled in Firefox 55.
64
macOS support was enabled in Firefox 64.
IE No Opera ? Safari No WebView Android No Chrome Android 56 — 80
Disabled
不支持 56 — 80
Disabled
Only works in an experimental version of Chrome . (Other builds won't return any devices when Navigator.getVRDisplays() is invoked.)
Daydream View supported in Chrome 56.
Google Cardboard supported in Chrome 57.
Disabled From version 56 until version 80 (exclusive): this feature is behind the WebVR preference. To change preferences in Chrome, visit chrome://flags.
Firefox Android 55 Opera Android ? Safari iOS ? Samsung Internet Android 6.0
6.0
Google Cardboard supported in Samsung Internet 7.0.
pose
弃用
Chrome No Edge 15 — 79 Firefox 55
55
Windows support was enabled in Firefox 55.
64
macOS support was enabled in Firefox 64.
IE No Opera ? Safari No WebView Android No Chrome Android 56 — 80
Disabled
不支持 56 — 80
Disabled
Only works in an experimental version of Chrome . (Other builds won't return any devices when Navigator.getVRDisplays() is invoked.)
Daydream View supported in Chrome 56.
Google Cardboard supported in Chrome 57.
Disabled From version 56 until version 80 (exclusive): this feature is behind the WebVR preference. To change preferences in Chrome, visit chrome://flags.
Firefox Android 55 Opera Android ? Safari iOS ? Samsung Internet Android 6.0
6.0
Google Cardboard supported in Samsung Internet 7.0.
rightProjectionMatrix
弃用
Chrome No Edge 15 — 79 Firefox 55
55
Windows support was enabled in Firefox 55.
64
macOS support was enabled in Firefox 64.
IE No Opera ? Safari No WebView Android No Chrome Android 56 — 80
Disabled
不支持 56 — 80
Disabled
Only works in an experimental version of Chrome . (Other builds won't return any devices when Navigator.getVRDisplays() is invoked.)
Daydream View supported in Chrome 56.
Google Cardboard supported in Chrome 57.
Disabled From version 56 until version 80 (exclusive): this feature is behind the WebVR preference. To change preferences in Chrome, visit chrome://flags.
Firefox Android 55 Opera Android ? Safari iOS ? Samsung Internet Android 6.0
6.0
Google Cardboard supported in Samsung Internet 7.0.
rightViewMatrix
弃用
Chrome No Edge 15 — 79 Firefox 55
55
Windows support was enabled in Firefox 55.
64
macOS support was enabled in Firefox 64.
IE No Opera ? Safari No WebView Android No Chrome Android 56 — 80
Disabled
不支持 56 — 80
Disabled
Only works in an experimental version of Chrome . (Other builds won't return any devices when Navigator.getVRDisplays() is invoked.)
Daydream View supported in Chrome 56.
Google Cardboard supported in Chrome 57.
Disabled From version 56 until version 80 (exclusive): this feature is behind the WebVR preference. To change preferences in Chrome, visit chrome://flags.
Firefox Android 55 Opera Android ? Safari iOS ? Samsung Internet Android 6.0
6.0
Google Cardboard supported in Samsung Internet 7.0.
timestamp
弃用
Chrome No Edge 15 — 79 Firefox 55
55
Windows support was enabled in Firefox 55.
64
macOS support was enabled in Firefox 64.
IE No Opera ? Safari No WebView Android No Chrome Android 56 — 80
Disabled
不支持 56 — 80
Disabled
Only works in an experimental version of Chrome . (Other builds won't return any devices when Navigator.getVRDisplays() is invoked.)
Daydream View supported in Chrome 56.
Google Cardboard supported in Chrome 57.
Disabled From version 56 until version 80 (exclusive): this feature is behind the WebVR preference. To change preferences in Chrome, visit chrome://flags.
Firefox Android 55 Opera Android ? Safari iOS ? Samsung Internet Android 6.0
6.0
Google Cardboard supported in Samsung Internet 7.0.

图例

完整支持
完整支持
不支持
不支持
兼容性未知
兼容性未知
实验。期望将来行为有所改变。
实验。期望将来行为有所改变。
弃用。不要用于新网站。
弃用。不要用于新网站。
见实现注意事项。
用户必须明确启用此特征。
用户必须明确启用此特征。

另请参阅