WebGL2RenderingContext.getActiveUniforms()
The WebGL2RenderingContext.getActiveUniforms()
method of
the WebGL 2 API retrieves information about
active uniforms within a WebGLProgram
.
Syntax
any gl.getActiveUniforms(program, uniformIndices, pname);
Parameters
program
-
A
WebGLProgram
containing the active uniforms. uniformIndices
-
An
Array
ofGLuint
specifying the indices of the active uniforms to query. pname
-
A
GLenum
specifying which information to query. Possible values:-
gl.UNIFORM_TYPE
: Returns anArray
ofGLenum
indicating the types of the uniforms. -
gl.UNIFORM_SIZE
: Returns anArray
ofGLuint
indicating the sizes of the uniforms. -
gl.UNIFORM_BLOCK_INDEX
: Returns anArray
ofGLint
indicating the block indices of the uniforms. -
gl.UNIFORM_OFFSET
: Returns anArray
ofGLint
indicating the uniform buffer offsets. -
gl.UNIFORM_ARRAY_STRIDE
: Returns anArray
ofGLint
indicating the strides between the elements. -
gl.UNIFORM_MATRIX_STRIDE
: Returns anArray
ofGLint
indicating the strides between columns of a column-major matrix or a row-major matrix. -
gl.UNIFORM_IS_ROW_MAJOR
: Returns anArray
ofGLboolean
indicating whether each of the uniforms is a row-major matrix or not.
-
Return value
Depends on which information is requested using the pname
parameter.
Examples
var uniformIndices = gl.getUniformIndices(program, ['UBORed', 'UBOGreen', 'UBOBlue']);
var uniformOffsets = gl.getActiveUniforms(program, uniformIndices, gl.UNIFORM_OFFSET);
Specifications
Specification |
---|
WebGL 2.0 Specification # 3.7.16 |
Browser compatibility
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