OpenGL 1.5 to OpenGL 2.0 GLSL Migration Guide

The OpenGL Shading Language was initially supported through ARB extensions to OpenGL 1.5. The following table (originally compiled by Teri Morrison) documents the mapping of OpenGL 1.5 ARB extension API entry points to the OpenGL 2.0 API entry points.

glAttachObjectARB	Renamed to glAttachShader. Input arguments program and shader were changed from GLhandleARB to GLuint.
glBindAttribLocationARB	Renamed to glBindAttribLocation. Input argument program was changed from GLhandleARB to GLuint. Input argument name was changed from const GLcharARB* to const GLchar*.
glCompileShaderARB	Renamed to glCompileShader. Input argument shader was changed from GLhandleARB to GLuint.
glCreateProgramObjectARB	Renamed to glCreateProgram. Function return value was changed from GLhandleARB to GLuint.
glCreateShaderObjectARB	Renamed to glCreateShader. Function return value was changed from GLhandleARB to GLuint.
glDeleteObjectARB	Split into two functions, glDeleteProgram and glDeleteShader. Input argument object was changed from GLhandleARB to GLuint. Additional error checking was added to ensure that the input argument in the new function (program or shader) is the proper object type.
glDetachObjectARB	Renamed to glDetachShader. Input arguments program and shader were changed from GLhandleARB to GLuint.
glDisableVertexAttribArrayARB	Renamed to glDisableVertexAttribArray.
glEnableVertexAttribArrayARB	Renamed to glEnableVertexAttribArray.
glGetActiveAttribARB	Renamed to glGetActiveAttrib. Input argument program was changed from GLhandleARB to GLuint. Input argument name was changed from GLcharARB* to GLchar*.
glGetActiveUniformARB	Renamed to glGetActiveUniform. Input argument program was changed from GLhandleARB to GLuint. Input argument name was changed from GLcharARB* to GLchar*.
glGetAttachedObjectsARB	Renamed to glGetAttachedShaders. Input argument program was changed from GLhandleARB to GLuint. Input argument objects was changed from GLhandleARB* to GLuint*.
glGetAttribLocationARB	Renamed to glGetAttribLocation. Input argument program was changed from GLhandleARB to GLuint. Input argument name was changed from const GLcharARB* to const GLchar*.
glGetHandleARB	Replaced by calling glGet with the symbolic constant GL_CURRENT_PROGRAM.
glGetInfoLogARB	Split into two functions, glGetProgramInfoLog and glGetShaderInfoLog. Input argument object was changed from GLhandleARB to GLuint. Output argument infoLog was changed from const GLcharARB* to const GLchar*. New error checking was added to ensure that the input argument in the new function (program or shader) is the proper object type.
glGetObjectParameterARB	Split into two functions, glGetProgram and glGetShader. Input argument object was changed from GLhandleARB to GLuint. Additional error checking was added to ensure that the input argument in the new function (program or shader) is the proper object type. In OpenGL 2.0 there is no equivalent for the floating-point version of the ARB function glGetObjectParameterfvARB.
glGetShaderSourceARB	Renamed to glGetShaderSource. Input argument shader was changed from GLhandleARB to GLuint. Output argument source was changed from const GLcharARB* to const GLchar*.
glGetUniformARB	Renamed to glGetUniform. Input argument program was changed from GLhandleARB to GLuint.
glGetUniformLocationARB	Renamed to glGetUniformLocation. Input argument program was changed from GLhandleARB to GLuint. Input argument name was changed from const GLcharARB* to const GLchar*.
glGetVertexAttribARB	Renamed to glGetVertexAttrib.
glGetVertexAttribPointerARB	Renamed to glGetVertexAttribPointer.
glLinkProgramARB	Renamed to glLinkProgram. Input argument program was changed from GLhandleARB to GLuint.
glShaderSourceARB	Renamed to glShaderSource. Input argument shader was changed from GLhandleARB to GLuint. Input argument strings was changed from const GLcharARB** to const GLchar**.
glUniformARB	Renamed to glUniform.
glUseProgramObjectARB	Renamed to glUseProgram. Input argument program was changed from GLhandleARB to GLuint.
glValidateProgramARB	Renamed to glValidateProgram. Input argument program was changed from GLhandleARB to GLuint.
glVertexAttribARB	Renamed to glVertexAttrib.
glVertexAttribPointerARB	Renamed to glVertexAttribPointer.
New functions	The functions glIsProgram and glIsShader were added in OpenGL 2.0 and have no equivalent in the ARB extensions that support GLSL.
	The function glDrawBuffers was promoted to OpenGL 2.0 from the ARB_draw_buffers extension specification, where it was called glDrawBuffersARB.