The WebGLRenderingContext.getUniform()
method of the WebGL API returns the value of a uniform variable at a given location.
The WebGLRenderingContext.getUniform()
method of the WebGL API returns the value of a uniform variable at a given location.
js
getUniform(program, location)
program
A WebGLProgram
containing the uniform attribute.
location
A WebGLUniformLocation
object containing the location of the uniform attribute to get.
The returned type depends on the uniform type:
Uniform type | Returned type |
---|---|
WebGL 1 only | |
boolean | GLBoolean |
int | GLint |
float | GLfloat |
vec2 |
Float32Array (with 2 elements) |
ivec2 |
Int32Array (with 2 elements) |
bvec2 | Array of GLBoolean (with 2 elements) |
vec3 |
Float32Array (with 3 elements) |
ivec3 |
Int32Array (with 3 elements) |
bvec3 | Array of GLBoolean (with 3 elements) |
vec4 |
Float32Array (with 4 elements) |
ivec4 |
Int32Array (with 4 elements) |
bvec4 | Array of GLBoolean (with 4 elements) |
mat2 |
Float32Array (with 4 elements) |
mat3 |
Float32Array (with 9 elements) |
mat4 |
Float32Array (with 16 elements) |
sampler2D | GLint |
samplerCube | GLint |
Additionally available in WebGL 2 | |
uint | GLuint |
uvec2 |
Uint32Array (with 2 elements) |
uvec3 |
Uint32Array (with 3 elements) |
uvec4 |
Uint32Array (with 4 elements) |
mat2x3 |
Float32Array (with 6 elements) |
mat2x4 |
Float32Array (with 8 elements) |
mat3x2 |
Float32Array (with 6 elements) |
mat3x4 |
Float32Array (with 12 elements) |
mat4x2 |
Float32Array (with 8 elements) |
mat4x3 |
Float32Array (with 12 elements) |
any sampler type | GLint |
js
const loc = gl.getUniformLocation(program, "u_foobar"); gl.getUniform(program, loc);
Specification |
---|
WebGL Specification # 5.14.10 |
WebGL 2.0 Specification # 3.7.8 |
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
getUniform |
9 | 12 | 4 | 11 | 12 | 5.1 | 4.4.3 | 25 | 4 | 12 | 8 | 1.5 |
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https://developer.mozilla.org/en-US/docs/Web/API/WebGLRenderingContext/getUniform