Baseline Widely available
Note: This feature is available in Web Workers.
The WebGLRenderingContext.uniform[1234][fi][v]() methods of the WebGL API specify values of uniform variables. All active uniform variables defined in a program object are initialized to 0 when the program object is linked successfully. They retain the values assigned to them by a call to this method until the next successful link operation occurs on the program object, when they are once again initialized to 0.
Note: Many of the functions described here have expanded WebGL 2 interfaces, which can be found under WebGL2RenderingContext.uniform[1234][uif][v]().
uniform1f(location, v0)
uniform1fv(location, value)
uniform1i(location, v0)
uniform1iv(location, value)
uniform2f(location, v0, v1)
uniform2fv(location, value)
uniform2i(location, v0, v1)
uniform2iv(location, value)
uniform3f(location, v0, v1, v2)
uniform3fv(location, value)
uniform3i(location, v0, v1, v2)
uniform3iv(location, value)
uniform4f(location, v0, v1, v2, v3)
uniform4fv(location, value)
uniform4i(location, v0, v1, v2, v3)
uniform4iv(location, value)
location
A WebGLUniformLocation object containing the location of the uniform attribute to modify.
value, v0, v1, v2, v3
A new value to be used for the uniform variable. Possible types:
Number for floating point values (methods with "f").Float32Array or an Array of numbers) for floating point vector methods (methods with "fv").Number for integer values (methods with "i").Int32Array for integer vector methods (methods with "iv").None (undefined).
gl.uniform1f(u_alpha, 0.8);
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