ANGLE_instanced_arrays

ANGLE_instanced_arrays extension is part of the WebGL API and allows to draw the same object, or groups of similar objects multiple times, if they share the same vertex data, primitive count and type.

WebGL extensions are available using the WebGLRenderingContext.getExtension() method. For more information, see also Using Extensions WebGL tutorial .

Availability: This extension is only available to WebGL1 contexts. In WebGL2 , the functionality of this extension is available on the WebGL2 context by default and the constants and methods are available without the " ANGLE " suffix.

Despite the name "ANGLE", this extension works on any device if the hardware supports it and not just on Windows when using the ANGLE library. "ANGLE" just indicates that this extension has been written by the ANGLE library authors.

常量

This extension exposes one new constant, which can be used in the gl.getVertexAttrib() method:

ext.VERTEX_ATTRIB_ARRAY_DIVISOR_ANGLE
返回 GLint describing the frequency divisor used for instanced rendering when used in the gl.getVertexAttrib() 作为 pname 参数。

方法

This extension exposes three new methods.

ext.drawArraysInstancedANGLE()

Behaves identically to gl.drawArrays() except that multiple instances of the range of elements are executed, and the instance advances for each iteration.

ext.drawElementsInstancedANGLE()

Behaves identically to gl.drawElements() except that multiple instances of the set of elements are executed and the instance advances between each set.

ext.vertexAttribDivisorANGLE()

Modifies the rate at which generic vertex attributes advance when rendering multiple instances of primitives with ext.drawArraysInstancedANGLE() and ext.drawElementsInstancedANGLE() .

范例

Enabling the extension:

var ext = gl.getExtension('ANGLE_instanced_arrays');
					

规范

规范 状态 Comment
ANGLE_instanced_arrays
The definition of 'ANGLE_instanced_arrays' in that specification.
Recommendation 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
ANGLE_instanced_arrays Chrome 30
Alternate Name
30
Alternate Name
Alternate Name Uses the non-standard name: ANGLEInstancedArrays
Edge 79
Alternate Name
79
Alternate Name
Alternate Name Uses the non-standard name: ANGLEInstancedArrays
不支持 12 — 79
Firefox 33 IE 11 Opera 17
Alternate Name
17
Alternate Name
Alternate Name Uses the non-standard name: ANGLEInstancedArrays
Safari 7 WebView Android 4.4
Alternate Name
4.4
Alternate Name
Alternate Name Uses the non-standard name: ANGLEInstancedArrays
Chrome Android 30
Alternate Name
30
Alternate Name
Alternate Name Uses the non-standard name: ANGLEInstancedArrays
Firefox Android Yes Opera Android 18
Alternate Name
18
Alternate Name
Alternate Name Uses the non-standard name: ANGLEInstancedArrays
Safari iOS Yes Samsung Internet Android 2.0
Alternate Name
2.0
Alternate Name
Alternate Name Uses the non-standard name: ANGLEInstancedArrays
drawArraysInstancedANGLE Chrome 30 Edge 12 Firefox 33 IE 11 Opera 17 Safari 7 WebView Android 4.4 Chrome Android 30 Firefox Android Yes Opera Android 18 Safari iOS Yes Samsung Internet Android 2.0
drawElementsInstancedANGLE Chrome 30 Edge 12 Firefox 33 IE 11 Opera 17 Safari 7 WebView Android 4.4 Chrome Android 30 Firefox Android Yes Opera Android 18 Safari iOS Yes Samsung Internet Android 2.0
vertexAttribDivisorANGLE Chrome 30 Edge 12 Firefox 33 IE 11 Opera 17 Safari 7 WebView Android 4.4 Chrome Android 30 Firefox Android Yes Opera Android 18 Safari iOS Yes Samsung Internet Android 2.0

图例

完整支持
完整支持
使用非标名称。

另请参阅