TglGetShaderSource = procedure(shaderObj: GLhandle; maxlength: GLsizei; var length: GLsizei; source: PGLChar); {$IFDEF DGL_WIN}stdcall; {$ELSE}cdecl; {$ENDIF}
TglGetUniformLocation = function(programObj: GLhandle; const char: PGLChar): glint; {$IFDEF DGL_WIN}stdcall; {$ELSE}cdecl; {$ENDIF}
TglGetUniformfv = procedure(programObj: GLhandle; location: GLint; params: PGLfloat); {$IFDEF DGL_WIN}stdcall; {$ELSE}cdecl; {$ENDIF}
TglGetShaderSource = procedure(shaderObj: GLhandle; maxlength: GLsizei; var length: GLsizei; source: PGLChar); {$IFDEF DGL_WIN}stdcall; {$ELSE}cdecl; {$ENDIF}
TglGetUniformLocation = function(programObj: GLhandle; const char: PGLChar): glint; {$IFDEF DGL_WIN}stdcall; {$ELSE}cdecl; {$ENDIF}
TglGetUniformfv = procedure(programObj: GLhandle; location: GLint; params: PGLfloat); {$IFDEF DGL_WIN}stdcall; {$ELSE}cdecl; {$ENDIF}