WebGLRenderingContext.getProgramParameter()

WebGLRenderingContext.getProgramParameter() 方法返回WebGLProgram的信息。

any gl.getProgramParameter(program, pname);

program

A WebGLProgram to get parameter information from.

pname

A Glenum (en-US) specifying the information to query. Possible values:

• gl.DELETE_STATUS: Returns a GLboolean (en-US) indicating whether or not the program is flagged for deletion.
• gl.LINK_STATUS: Returns a GLboolean (en-US) indicating whether or not the last link operation was successful.
• gl.VALIDATE_STATUS: Returns a GLboolean (en-US) indicating whether or not the last validation operation was successful.
• gl.ATTACHED_SHADERS: Returns a GLint (en-US) indicating the number of attached shaders to a program.
• gl.ACTIVE_ATTRIBUTES: Returns a GLint (en-US) indicating the number of active attribute variables to a program.
• gl.ACTIVE_UNIFORMS: Returns a GLint (en-US) indicating the number of active uniform variables to a program.
• When using a WebGL 2 context, the following values are available additionally:
  • gl.TRANSFORM_FEEDBACK_BUFFER_MODE: Returns a GLenum (en-US) indicating the buffer mode when transform feedback is active. May be gl.SEPARATE_ATTRIBS or gl.INTERLEAVED_ATTRIBS.
  • gl.TRANSFORM_FEEDBACK_VARYINGS: Returns a GLint (en-US) indicating the number of varying variables to capture in transform feedback mode.
  • gl.ACTIVE_UNIFORM_BLOCKS: Returns a GLint (en-US) indicating the number of uniform blocks containing active uniforms.

Returns the requested program information (as specified with pname).

• WebGLRenderingContext.getShaderParameter()