The ANGLE_instanced_arrays.drawElementsInstancedANGLE()
method of the WebGL API renders primitives from array data like the gl.drawElements()
method. In addition, it can execute multiple instances of a set of elements.
Note: When using WebGL2
, this method is available as gl.drawElementsInstanced()
by default.
Syntax
void ext.drawElementsInstancedANGLE(mode, count, type, offset, primcount);
Parameters
mode
- A
GLenum
specifying the type primitive to render. Possible values are:gl.POINTS
: Draws a single dot.gl.LINE_STRIP
: Draws a straight line to the next vertex.gl.LINE_LOOP
: Draws a straight line to the next vertex, and connects the last vertex back to the first.gl.LINES
: Draws a line between a pair of vertices.gl.TRIANGLE_STRIP
gl.TRIANGLE_FAN
gl.TRIANGLES
: Draws a triangle for a group of three vertices.
- count
- A
GLsizei
specifying the number of elements to be rendered. - type
- A
GLenum
specifying the type of the values in the element array buffer. Possible values are:gl.UNSIGNED_BYTE
gl.UNSIGNED_SHORT
- When using the
OES_element_index_uint
extension:gl.UNSIGNED_INT
- offset
- A
GLintptr
specifying an offset in the element array buffer. Must be a valid multiple of the size of the giventype
. - primcount
- A
GLsizei
specifying the number of instances of the set of elements to execute.
Return value
None.
Exceptions
- If
mode
is not one of the accepted values, agl.INVALID_ENUM
error is thrown. - If
offset
is a valid multiple of the size of the given type, agl.INVALID_OPERATION
error is thrown. - If
count
orprimcount
are negative, agl.INVALID_VALUE
error is thrown.
Examples
var ext = gl.getExtension('ANGLE_instanced_arrays'); ext.drawElementsInstancedANGLE(gl.POINTS, 2, gl.UNSIGNED_SHORT, 0, 4);
Specifications
Specification | Status | Comment |
---|---|---|
ANGLE_instanced_arrays The definition of 'ANGLE_instanced_arrays' in that specification. |
Recommendation | Initial definition. |
Browser compatibility
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Feature | Chrome | Firefox | Edge | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|---|
Basic Support | ? | 33.0 | ? | 11 | ? | ? |
Feature | Android | Chrome for Android | Edge mobile | Firefox for Android | IE mobile | Opera Android | iOS Safari |
---|---|---|---|---|---|---|---|
Basic Support | ? | ? | ? | ? | ? | ? | ? |