//
//  GLESView.h
//  MarineCompass
//
//  Created by döme on 03.08.2009.
//

/*
 * Copyright (c) 2009 Doemoetoer Gulyas.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */


#import <UIKit/UIKit.h>
#import <OpenGLES/EAGL.h>
#import <OpenGLES/ES2/gl.h>
#import <OpenGLES/ES2/glext.h>

#define USE_DEPTH_BUFFER 1

@interface GLESView : UIView
{
	float osVersion;

    GLint backingWidth;
    GLint backingHeight;
    
    EAGLContext *context;
    
    /* OpenGL names for the renderbuffer and framebuffers used to render to this view */
    GLuint viewRenderbuffer, viewFramebuffer;
    
    /* OpenGL name for the depth buffer that is attached to viewFramebuffer, if it exists (0 if it does not exist) */
    GLuint depthRenderbuffer;

	CADisplayLink*	displayLink;
	NSThread*		displayThread;
	BOOL			displayThreadShouldRun;
	BOOL			recreateFramebuffer;

}

- (void) setupGraphicsForApi: (EAGLRenderingAPI) glApi;

- (void) textureFromCgImage: (CGImageRef) img texName: (GLuint*) texname width: (size_t) width height: (size_t) height repeat: (BOOL) doRepeat mipmap: (BOOL) doMipmap filter: (BOOL) doFilter;
- (void) loadTextureFromBitmapNamed: (NSString*) name texName: (GLuint*) texname repeat: (BOOL) doRepeat mipmap: (BOOL) doMipmap filter: (BOOL) doFilter;
- (void) loadTextureFromPDFNamed: (NSString*) name texName: (GLuint*) texname width: (size_t) width height: (size_t) height repeat: (BOOL) doRepeat mipmap: (BOOL) doMipmap filter: (BOOL) doFilter;
- (void) lineGradientTexture: (GLuint*) texname red: (float) r green: (float) g blue: (float) b;
- (void) doubleGradientTexture: (GLuint*) texname red: (float) r green: (float) g blue: (float) b;


- (void)animationCallback;
- (void)startAnimation: (BOOL) threaded;
- (void)stopAnimation;

- (void) setupViewDrawing;
- (void) finishViewDrawing;
- (void) drawView;

@property NSTimeInterval animationInterval;

@end