/*

     File: GLUQuery.h

 Abstract: 

 Utility toolkit for constructing a query of OpenGL Core profile features.

  Version: 1.2

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 */

// MacOS X

#ifndef _GL_UTILITIES_QUERY_H_

#define _GL_UTILITIES_QUERY_H_

// Mac OS X frameworks

#import <Cocoa/Cocoa.h>

#import <OpenGL/OpenGL.h>

// OpenGL container types

#import "GLUContainers.h"

#ifdef __cplusplus

namespace GLU

{

    // In a large scale system architecture, instead of exposing the data

    // structure, one would hide all the instance variables and instead

    // expose a single opaque data reference.  In this case our opaque data

    // reference is represented by a pointer to Query structure.  The

    // details of this data structure are hidden and only exposed in the

    // implementation file.  All subsequent methods then work with this

    // opaque data reference.

    typedef struct Query  *QueryRef;

    // Query OpenGL for features

    QueryRef QueryCreate();

    // Delete query

    void QueryDelete(QueryRef pQuery);

    // Is the feature available

    const bool QueryFeatureIsAvailable(const GLU::Feature &rFeature, QueryRef pQuery);

    // If the feature is found, the returned string will be GL_APPLE, GL_ARB, or GL_EXT

    const String QueryFeatureGetType(const GLU::Feature &rFeature, QueryRef pQuery);

    // OpenGL Apple features

    const Features QueryFeaturesGetApple(const QueryRef pQuery);

    // OpenGL ARB features

    const Features QueryFeaturesGetARB(const QueryRef pQuery);

    // OpenGL EXT features

    const Features QueryFeaturesGetEXT(const QueryRef pQuery);

    // OpenGL vendor

    const String QueryStringGetVendor(const QueryRef pQuery);

    // OpenGL version

    const String QueryStringGetVersion(const QueryRef pQuery);

    // OpenGL renderer

    const String QueryStringGetRenderer(const QueryRef pQuery);

    // OpenGL Apple features as a string, where each feature is separated using a seperator string

    const String QueryStringGetApple(const String &rSeperator, const QueryRef pQuery);

    // OpenGL Apple features as a string, where each feature is separated using a seperator string

    const String QueryStringGetARB(const String &rSeperator, const QueryRef pQuery);

    // OpenGL Apple features as a string, where each feature is separated using a seperator string

    const String QueryStringGetEXT(const String &rSeperator, const QueryRef pQuery);

    // Apple feature set as a CF array

    CFArrayRef QueryArrayGetApple(QueryRef pQuery);

    // ARB feature set as a CF array

    CFArrayRef QueryArrayGetARB(QueryRef pQuery);

    // EXT feature set as a CF array

    CFArrayRef QueryArrayGetEXT(QueryRef pQuery);

} // GLU

#endif

#endif