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

voidglGetUniformSubroutineuiv(GLenumshadertype,GLintlocation,GLuint*values);

       Copyright © 2010-2014 Khronos Group.

[FIXME: source]                                    11/18/2024                           GLGETUNIFORMSUBROUTI(3G)

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.

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.

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

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.

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

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       ├───────────────────────────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┤
       │ glGetUniformSubroutineuiv │  -  │  -  │  -  │  -  │  -  │  -  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │
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