The WebGLRenderingContext.uniformMatrix[234]fv() methods of the WebGL API specify matrix values for uniform variables.
The three versions of this method (uniformMatrix2fv(), uniformMatrix3fv(), and uniformMatrix4fv()) take as the input value 2-component, 3-component, and 4-component square matrices, respectively. They are expected to have 4, 9 or 16 floats.
js
uniformMatrix2fv(location, transpose, value) uniformMatrix3fv(location, transpose, value) uniformMatrix4fv(location, transpose, value)
location A WebGLUniformLocation object containing the location of the uniform attribute to modify. The location is obtained using getUniformLocation().
transpose A GLboolean specifying whether to transpose the matrix. Must be false.
value A Float32Array or sequence of GLfloat values. The values are assumed to be supplied in column major order.
None (undefined).
js
gl.uniformMatrix2fv(loc, false, [2, 1, 2, 2]);
| Specification |
|---|
| WebGL Specification # 5.14.10 |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
uniformMatrix |
9 | 12 | 4 | 11 | 12 | 5.1 | 4.4.3 | 25 | 4 | 12 | 8 | 1.5 |
WebGLRenderingContext.uniform()WebGL2RenderingContext.uniformMatrix() – WebGL 2 versions of these methods.
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https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/uniformMatrix