NAME

       glGetUniformSubroutine - retrieve the value of a subroutine uniform of a given shader
       stage of the current program

C SPECIFICATION

       void glGetUniformSubroutineuiv(GLenum shadertype, GLint location, GLuint *values);

PARAMETERS

       shadertype
           Specifies the shader stage from which to query for subroutine uniform index.
           shadertype must be one of GL_VERTEX_SHADER, GL_TESS_CONTROL_SHADER,
           GL_TESS_EVALUATION_SHADER, GL_GEOMETRY_SHADER or GL_FRAGMENT_SHADER.

       location
           Specifies the location of the subroutine uniform.

       values
           Specifies the address of a variable to receive the value or values of the subroutine
           uniform.

DESCRIPTION

       glGetUniformSubroutine retrieves the value of the subroutine uniform at location location
       for shader stage shadertype of the current program.  location must be less than the value
       of GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS for the shader currently in use at shader stage
       shadertype. The value of the subroutine uniform is returned in values.

ERRORS

       GL_INVALID_ENUM is generated if shadertype is not one of the accepted values.

       GL_INVALID_VALUE is generated if location is greater than or equal to the value of
       GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS for the shader currently in use at shader stage
       shadertype.

       GL_INVALID_OPERATION is generated if no program is active.

VERSION SUPPORT

       ┌──────────────────────────┬───────────────────────────────────────────────────────────────────────┐
       │                          │                OpenGL Version                                         │
       ├──────────────────────────┼─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┤
       │Function                  │ 2.0 │ 2.1 │ 3.0 │ 3.1 │ 3.2 │ 3.3 │ 4.0 │ 4.1 │ 4.2 │ 4.3 │ 4.4 │ 4.5 │
       │/                         │     │     │     │     │     │     │     │     │     │     │     │     │
       │Feature                   │     │     │     │     │     │     │     │     │     │     │     │     │
       │Name                      │     │     │     │     │     │     │     │     │     │     │     │     │
       ├──────────────────────────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┤
       │glGetUniformSubroutineuiv │  -  │  -  │  -  │  -  │  -  │  -  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │
       └──────────────────────────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┘

SEE ALSO

       glGetProgram(), glGetActiveSubroutineUniform(), glGetActiveSubroutineUniformName(),
       glGetUniformLocation()

COPYRIGHT

       Copyright © 2010-2014 Khronos Group. This material may be distributed subject to the terms
       and conditions set forth in the Open Publication License, v 1.0, 8 June 1999.
       http://opencontent.org/openpub/.

COPYRIGHT

       Copyright © 2010-2014 Khronos Group.

[FIXME: source]                             01/03/2018                   GLGETUNIFORMSUBROUTI(3G)