The WebGL2RenderingContext.getActiveUniformBlockParameter()
method of the WebGL 2 API retrieves information about an active uniform block within a WebGLProgram
.
The WebGL2RenderingContext.getActiveUniformBlockParameter()
method of the WebGL 2 API retrieves information about an active uniform block within a WebGLProgram
.
js
getActiveUniformBlockParameter(program, uniformBlockIndex, pname)
program
A WebGLProgram
containing the active uniform block.
uniformBlockIndex
A GLuint
specifying the index of the active uniform block within the program.
pname
A GLenum
specifying which information to query. Possible values:
gl.UNIFORM_BLOCK_BINDING
Returns a GLuint
indicating the uniform buffer binding point.
gl.UNIFORM_BLOCK_DATA_SIZE
Returns a GLuint
indicating the minimum total buffer object size.
gl.UNIFORM_BLOCK_ACTIVE_UNIFORMS
Returns a GLuint
indicating the number of active uniforms in the uniform block.
gl.UNIFORM_BLOCK_ACTIVE_UNIFORM_INDICES
Returns a Uint32Array
indicating the list of active uniforms in the uniform block.
gl.UNIFORM_BLOCK_REFERENCED_BY_VERTEX_SHADER
Returns a GLboolean
indicating whether the uniform block is referenced by the vertex shader.
gl.UNIFORM_BLOCK_REFERENCED_BY_FRAGMENT_SHADER
Returns a GLboolean
indicating whether the uniform block is referenced by the fragment shader.
Depends on which information is requested using the pname
parameter. If an error occurs, null
is returned.
js
const blockSize = gl.getActiveUniformBlockParameter( program, blockIndex, gl.UNIFORM_BLOCK_DATA_SIZE, );
Specification |
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WebGL 2.0 Specification # 3.7.16 |
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Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
getActiveUniformBlockParameter |
56 | 79 | 51 | No | 43 | 15 | 58 | 58 | 51 | 43 | 15 | 7.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/WebGL2RenderingContext/getActiveUniformBlockParameter