MyEAGLView.h
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- /*
- ===== IMPORTANT =====
- This is sample code demonstrating API, technology or techniques in development.
- Although this sample code has been reviewed for technical accuracy, it is not
- final. Apple is supplying this information to help you plan for the adoption of
- the technologies and programming interfaces described herein. This information
- is subject to change, and software implemented based on this sample code should
- be tested with final operating system software and final documentation. Newer
- versions of this sample code may be provided with future seeds of the API or
- technology. For information about updates to this and other developer
- documentation, view the New & Updated sidebars in subsequent documentation
- seeds.
- =====================
- File: MyEAGLView.h
- Abstract: Convenience class that wraps the CAEAGLLayer from CoreAnimation into a
- UIView subclass.
- Version: 1.6
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- COMBINATION WITH YOUR PRODUCTS.
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- */
- #import <UIKit/UIKit.h>
- #import <OpenGLES/EAGL.h>
- #import <OpenGLES/EAGLDrawable.h>
- #import <OpenGLES/ES1/gl.h>
- #import <OpenGLES/ES1/glext.h>
- //CLASSES:
- @class MyEAGLView;
- //PROTOCOLS:
- @protocol MyEAGLViewDelegate <NSObject>
- - (void) didResizeEAGLSurfaceForView:(MyEAGLView*)view; //Called whenever the EAGL surface has been resized
- @end
- //CLASS INTERFACE:
- /*
- This class wraps the CAEAGLLayer from CoreAnimation into a convenient UIView subclass.
- The view content is basically an EAGL surface you render your OpenGL scene into.
- Note that setting the view non-opaque will only work if the EAGL surface has an alpha channel.
- */
- @interface MyEAGLView : UIView
- {
- @private
- NSString* _format;
- GLuint _depthFormat;
- BOOL _autoresize;
- EAGLContext *_context;
- GLuint _framebuffer;
- GLuint _renderbuffer;
- GLuint _depthBuffer;
- CGSize _size;
- BOOL _hasBeenCurrent;
- id<MyEAGLViewDelegate> _delegate;
- }
- - (id)initWithCoder:(NSCoder*)coder;
- @property(readonly) GLuint framebuffer;
- @property(readonly) NSString* pixelFormat;
- @property(readonly) GLuint depthFormat;
- @property(readonly) EAGLContext *context;
- @property BOOL autoresizesSurface; //NO by default - Set to YES to have the EAGL surface automatically resized when the view bounds change, otherwise the EAGL surface contents is rendered scaled
- @property(readonly, nonatomic) CGSize surfaceSize;
- @property(assign) id<MyEAGLViewDelegate> delegate;
- - (void) setCurrentContext;
- - (BOOL) isCurrentContext;
- - (void) clearCurrentContext;
- - (void) swapBuffers; //This also checks the current OpenGL error and logs an error if needed
- - (CGPoint) convertPointFromViewToSurface:(CGPoint)point;
- - (CGRect) convertRectFromViewToSurface:(CGRect)rect;
- @end