Bash INKEY$ function... Post: 302785605

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glgetsubroutineindex

GLGETSUBROUTINEINDEX(3G)					   OpenGL Manual					  GLGETSUBROUTINEINDEX(3G)

NAME

       glGetSubroutineIndex - retrieve the index of a subroutine uniform of a given shader stage within a program

C SPECIFICATION

       GLuint glGetSubroutineIndex(GLuint program, GLenum shadertype, const GLchar *name);

PARAMETERS

       program
	   Specifies the name of the program containing shader stage.

       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.

       name
	   Specifies the name of the subroutine uniform whose index to query.

DESCRIPTION

       glGetSubroutineIndex returns the index of a subroutine uniform within a shader stage attached to a program object.  program contains the
       name of the program to which the shader is attached.  shadertype specifies the stage from which to query shader subroutine index.  name
       contains the null-terminated name of the subroutine uniform whose name to query.

       If name is not the name of a subroutine uniform in the shader stage, GL_INVALID_INDEX is returned, but no error is generated. If name is
       the name of a subroutine uniform in the shader stage, a value between zero and the value of GL_ACTIVE_SUBROUTINES minus one will be
       returned. Subroutine indices are assigned using consecutive integers in the range from zero to the value of GL_ACTIVE_SUBROUTINES minus one
       for the shader stage.

ERRORS

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

       GL_INVALID_VALUE is generated if program is not the name of an existing program object.

SEE ALSO

       glGetProgram(), glGetActiveSubroutineUniform(), glGetActiveSubroutineUniformName()

COPYRIGHT

       Copyright (C) 2010 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/.

AUTHORS

       opengl.org

opengl.org							    06/10/2014						  GLGETSUBROUTINEINDEX(3G)

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