nuclear@39: /* SimplyGL window system module for iOS */
nuclear@39: /* mac-framework: -framework UIKit */
nuclear@39: 
nuclear@39: #ifdef USE_WSYS_MODULE_IOS
nuclear@39: 
nuclear@36: #include <assert.h>
nuclear@36: #import <UIKit/UIKit.h>
nuclear@37: #import <QuartzCore/QuartzCore.h>
nuclear@36: #include <OpenGLES/ES2/gl.h>
nuclear@36: #include <OpenGLES/ES2/glext.h>
nuclear@40: #include "sgl.h"
nuclear@40: #include "wsys.h"
nuclear@36: 
nuclear@37: @interface SGLView : UIView {
nuclear@36: @private
nuclear@36: 	BOOL active;
nuclear@36: 	BOOL use_disp_link;
nuclear@36: 	NSInteger frame_interval;
nuclear@36: 	id disp_link;
nuclear@36: 	NSTimer *anim_timer;
nuclear@36: 	EAGLContext *ctx;
nuclear@36: 	unsigned int fbo, rbuf_color, rbuf_depth;
nuclear@36: }
nuclear@36: 
nuclear@37: @property (readonly, nonatomic, getter=isAnimating) BOOL active;
nuclear@37: @property (nonatomic) NSInteger frame_interval;
nuclear@37: 
nuclear@36: -(void)start_anim;
nuclear@36: -(void)stop_anim;
nuclear@37: -(void)drawView: (id)sender;
nuclear@36: @end
nuclear@36: 
nuclear@36: @interface SGLDelegate : NSObject <UIApplicationDelegate> {
nuclear@36: 	UIWindow *win;
nuclear@37: 	SGLView *view;
nuclear@36: }
nuclear@37: 
nuclear@40: 
nuclear@37: @property (nonatomic, retain) IBOutlet UIWindow *win;
nuclear@37: @property (nonatomic, retain) IBOutlet SGLView *view;
nuclear@36: @end
nuclear@36: 
nuclear@36: 
nuclear@36: 
nuclear@39: static int init(void);
nuclear@39: static void shutdown(void);
nuclear@39: 
nuclear@39: /* video mode switching */
nuclear@39: static int set_vidmode(int xsz, int ysz);
nuclear@39: static int get_vidmode(int *xsz, int *ysz);
nuclear@39: 
nuclear@39: /* create/destroy windows */
nuclear@39: static int create_window(int xsz, int ysz, unsigned int flags);
nuclear@39: static void close_window(int wid);
nuclear@39: 
nuclear@39: /* window management */
nuclear@39: static int set_active(int wid);
nuclear@39: static int set_title(const char *str);
nuclear@39: static void redisplay(void);
nuclear@39: static void swap_buffers(void);
nuclear@39: 
nuclear@39: static int get_modifiers(void);
nuclear@39: 
nuclear@39: /* event handling and friends */
nuclear@39: static void set_event(int idx, int enable);
nuclear@39: static int process_events(void);
nuclear@39: 
nuclear@39: 
nuclear@39: static struct wsys_module ws = {
nuclear@39: 	"ios", 0,
nuclear@39: 	init,
nuclear@39: 	shutdown,
nuclear@39: 	set_vidmode,
nuclear@39: 	get_vidmode,
nuclear@39: 	create_window,
nuclear@39: 	close_window,
nuclear@39: 	set_active,
nuclear@39: 	set_title,
nuclear@39: 	redisplay,
nuclear@39: 	swap_buffers,
nuclear@39: 	get_modifiers,
nuclear@39: 	set_event,
nuclear@39: 	process_events,
nuclear@39: 	0
nuclear@39: };
nuclear@39: 
nuclear@39: 
nuclear@39: void sgl_register_ios(void)
nuclear@39: {
nuclear@39: 	sgl_register_module(&ws);
nuclear@39: }
nuclear@39: 
nuclear@39: 
nuclear@37: @implementation SGLView
nuclear@36: 
nuclear@37: @synthesize active;
nuclear@36: @dynamic frame_interval;
nuclear@36: 
nuclear@36: +(Class)layerClass
nuclear@36: {
nuclear@36: 	return [CAEAGLLayer class];
nuclear@36: }
nuclear@36: 
nuclear@39: /*The EAGL view is stored in the nib file. When it's unarchived it's sent -initWithCoder: */
nuclear@36: -(id)initWithCoder: (NSCoder*)coder
nuclear@36: {
nuclear@36: 	if((self = [super initWithCoder: coder])) {
nuclear@39: 		/* Get the layer */
nuclear@36: 		CAEAGLLayer *layer = (CAEAGLLayer*)self.layer;
nuclear@36: 
nuclear@39: 		/*self.contentScaleFactor = 2.0; */
nuclear@36: 
nuclear@36: 		layer.opaque = TRUE;
nuclear@36: 		layer.drawableProperties = [NSDictionary dictionaryWithObjectsAndKeys:
nuclear@36: 			[NSNumber numberWithBool: FALSE],
nuclear@36: 			kEAGLDrawablePropertyRetainedBacking, kEAGLColorFormatRGBA8,
nuclear@36: 			kEAGLDrawablePropertyColorFormat,
nuclear@36: 			nil];
nuclear@36: 
nuclear@36: 		ctx = [[EAGLContext alloc] initWithAPI: kEAGLRenderingAPIOpenGLES2];
nuclear@36: 		if(!ctx || ![EAGLContext setCurrentContext: ctx]) {
nuclear@36: 			[self release];
nuclear@36: 			return nil;
nuclear@36: 		}
nuclear@36: 
nuclear@39: 		/* initialize fbos etc... */
nuclear@36: 		glGenFramebuffers(1, &fbo);
nuclear@36: 		glBindFramebuffer(GL_FRAMEBUFFER, fbo);
nuclear@36: 
nuclear@36: 		glGenRenderbuffers(1, &rbuf_color);
nuclear@36: 		glBindRenderbuffer(GL_RENDERBUFFER, rbuf_color);
nuclear@36: 		glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, rbuf_color);
nuclear@36: 
nuclear@36: 		glGenRenderbuffers(1, &rbuf_depth);
nuclear@36: 		glBindRenderbuffer(GL_RENDERBUFFER, rbuf_depth);
nuclear@36: 		glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, rbuf_depth);
nuclear@36: 		assert(glGetError() == GL_NO_ERROR);
nuclear@36: 
nuclear@37: 		active = FALSE;
nuclear@36: 		use_disp_link = FALSE;
nuclear@36: 		frame_interval = 1;
nuclear@36: 		disp_link = nil;
nuclear@36: 		anim_timer = nil;
nuclear@36: 
nuclear@39: 		/* A system version of 3.1 or greater is required to use CADisplayLink. The NSTimer */
nuclear@39: 		/* class is used as fallback when it isn't available. */
nuclear@36: 		NSString *req_ver = @"3.1";
nuclear@36: 		NSString *cur_ver = [[UIDevice currentDevice] systemVersion];
nuclear@37: 		if([cur_ver compare: req_ver options: NSNumericSearch] != NSOrderedAscending) {
nuclear@36: 			use_disp_link = TRUE;
nuclear@36: 		}
nuclear@36: 
nuclear@39: 		/*self.multipleTouchEnabled = 1; */
nuclear@36: 
nuclear@39: 		/* TODO call user init ? */
nuclear@36: 	}
nuclear@36: 
nuclear@36: 	return self;
nuclear@36: }
nuclear@36: 
nuclear@36: -(void)drawView: (id)sender
nuclear@36: {
nuclear@39: 	/* TODO call display */
nuclear@36: }
nuclear@36: 
nuclear@36: -(void)layoutSubviews
nuclear@36: {
nuclear@39: 	/* TODO call reshape */
nuclear@39: 	/* XXX originally call to renderer resizeFromLayer */
nuclear@39: 	/* XXX originally call to [self drawView: nil] */
nuclear@36: }
nuclear@36: 
nuclear@36: -(void)setAnimationFrameInterval: (NSInteger)interval
nuclear@36: {
nuclear@36: 	/* Frame interval defines how many display frames must pass
nuclear@36: 	 * between each time the display link fires. The display
nuclear@36: 	 * link will only fire 30 times a second when the frame
nuclear@36: 	 * internal is two on a display that refreshes 60 times a
nuclear@36: 	 * second. The default frame interval setting of one will
nuclear@36: 	 * fire 60 times a second when the display refreshes at 60
nuclear@36: 	 * times a second. A frame interval setting of less than
nuclear@36: 	 * one results in undefined behavior.
nuclear@36: 	 */
nuclear@36: 	if(interval >= 1) {
nuclear@36: 		frame_interval = frame_interval;
nuclear@36: 
nuclear@36: 		if(active)
nuclear@36: 		{
nuclear@37: 			[self stop_anim];
nuclear@37: 			[self start_anim];
nuclear@36: 		}
nuclear@36: 	}
nuclear@36: }
nuclear@36: 
nuclear@37: -(void)start_anim
nuclear@36: {
nuclear@36: 	if(!active) {
nuclear@36: 		if(use_disp_link) {
nuclear@39: 			/* CADisplayLink is API new to iPhone SDK 3.1. Compiling against earlier versions will result in a warning, but can be dismissed
nuclear@39: 			 * if the system version runtime check for CADisplayLink exists in -initWithCoder:. The runtime check ensures this code will
nuclear@39: 			 * not be called in system versions earlier than 3.1.
nuclear@39: 			 */
nuclear@36: 
nuclear@36: 			disp_link = [NSClassFromString(@"CADisplayLink") displayLinkWithTarget: self
nuclear@36: 				selector: @selector(drawView:)];
nuclear@37: 			[disp_link setFrameInterval: frame_interval];
nuclear@37: 			[disp_link addToRunLoop: [NSRunLoop currentRunLoop] forMode: NSDefaultRunLoopMode];
nuclear@36: 		} else {
nuclear@36: 			anim_timer = [NSTimer scheduledTimerWithTimeInterval: (NSTimeInterval)((1.0 / 60.0) * frame_interval)
nuclear@36: 				target: self selector: @selector(drawView:) userInfo: nil
nuclear@36: 				repeats: TRUE];
nuclear@36: 		}
nuclear@36: 
nuclear@36: 		active = TRUE;
nuclear@36: 	}
nuclear@36: }
nuclear@36: 
nuclear@37: - (void)stop_anim
nuclear@36: {
nuclear@36: 	if(active) {
nuclear@36: 		if(use_disp_link) {
nuclear@36: 			[disp_link invalidate];
nuclear@36: 			disp_link = nil;
nuclear@36: 		} else {
nuclear@36: 			[anim_timer invalidate];
nuclear@36: 			anim_timer = nil;
nuclear@36: 		}
nuclear@36: 
nuclear@36: 		active = FALSE;
nuclear@36: 	}
nuclear@36: }
nuclear@36: 
nuclear@36: -(void)dealloc
nuclear@36: {
nuclear@39: 	/* XXX originally [renderer release]; */
nuclear@36: 	[super dealloc];
nuclear@36: }
nuclear@36: @end
nuclear@36: 
nuclear@36: @implementation SGLDelegate
nuclear@36: 
nuclear@36: @synthesize win;
nuclear@36: @synthesize view;
nuclear@36: 
nuclear@36: -(BOOL)application: (UIApplication*)app didFinishLaunchingWithOptions: (NSDictionary*)opt
nuclear@36: {
nuclear@37: 	[view start_anim];
nuclear@36: 	return YES;
nuclear@36: }
nuclear@36: 
nuclear@36: -(void)applicationWillResignActive: (UIApplication*)app
nuclear@36: {
nuclear@37: 	[view stop_anim];
nuclear@36: }
nuclear@36: 
nuclear@36: -(void)applicationDidBecomeActive: (UIApplication*)app
nuclear@36: {
nuclear@37: 	[view start_anim];
nuclear@36: }
nuclear@36: 
nuclear@36: -(void)applicationWillTerminate: (UIApplication*)app
nuclear@36: {
nuclear@37: 	[view stop_anim];
nuclear@36: }
nuclear@36: 
nuclear@36: -(void)dealloc
nuclear@36: {
nuclear@36: 	[win release];
nuclear@36: 	[view release];
nuclear@36: 	[super dealloc];
nuclear@36: }
nuclear@36: @end
nuclear@39: 
nuclear@39: 
nuclear@39: 
nuclear@39: static int init(void)
nuclear@39: {
nuclear@39: 	return -1;
nuclear@39: }
nuclear@39: 
nuclear@39: static void shutdown(void)
nuclear@39: {
nuclear@39: }
nuclear@39: 
nuclear@39: /* video mode switching */
nuclear@39: static int set_vidmode(int xsz, int ysz)
nuclear@39: {
nuclear@39: 	return -1;
nuclear@39: }
nuclear@39: 
nuclear@39: static int get_vidmode(int *xsz, int *ysz)
nuclear@39: {
nuclear@39: 	return -1;
nuclear@39: }
nuclear@39: 
nuclear@39: /* create/destroy windows */
nuclear@39: static int create_window(int xsz, int ysz, unsigned int flags)
nuclear@39: {
nuclear@39: 	return -1;
nuclear@39: }
nuclear@39: 
nuclear@39: static void close_window(int wid)
nuclear@39: {
nuclear@39: }
nuclear@39: 
nuclear@39: /* window management */
nuclear@39: static int set_active(int wid)
nuclear@39: {
nuclear@39: 	return -1;
nuclear@39: }
nuclear@39: 
nuclear@39: static int set_title(const char *str)
nuclear@39: {
nuclear@39: 	return -1;
nuclear@39: }
nuclear@39: 
nuclear@39: static void redisplay(void)
nuclear@39: {
nuclear@39: }
nuclear@39: 
nuclear@39: static void swap_buffers(void)
nuclear@39: {
nuclear@39: }
nuclear@39: 
nuclear@39: static int get_modifiers(void)
nuclear@39: {
nuclear@39: 	return 0;
nuclear@39: }
nuclear@39: 
nuclear@39: /* event handling and friends */
nuclear@39: static void set_event(int idx, int enable)
nuclear@39: {
nuclear@39: }
nuclear@39: 
nuclear@39: static int process_events(void)
nuclear@39: {
nuclear@40: 	char *argv[] = {"foobar", 0};
nuclear@40: 	NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
nuclear@40: 	
nuclear@40: 	int res = UIApplicationMain(1, argv, 0, @"SGLDelegate");
nuclear@40: 	
nuclear@40: 	[pool release];
nuclear@40: 	return res;
nuclear@39: }
nuclear@39: 
nuclear@39: 
nuclear@39: 
nuclear@39: 
nuclear@39: 
nuclear@39: /* only compile the following if we're building in xcode and we
nuclear@39:  * don't have generated modules.c file
nuclear@39:  */
nuclear@39: #ifdef XCODE_BUILD
nuclear@39: @interface sgl : NSObject
nuclear@39: /* XXX no need for init yet... */
nuclear@39: @end
nuclear@39: 
nuclear@39: @implementation sgl
nuclear@39: 
nuclear@39: - (id)init
nuclear@39: {
nuclear@39:     self = [super init];
nuclear@39:     if(self) {
nuclear@39:         /* XXX Initialization code here. */
nuclear@39:     }
nuclear@39:     return self;
nuclear@39: }
nuclear@39: 
nuclear@39: @end
nuclear@39: 
nuclear@39: void sgl_modules_init(void)
nuclear@39: {
nuclear@40: 	sgl_register_ios();
nuclear@39: }
nuclear@39: 
nuclear@39: #endif	/* XCODE_BUILD */
nuclear@39: 
nuclear@39: 
nuclear@39: #else
nuclear@39: int sgl_wsys_ios_silence_the_fucking_empty_file_warnings;
nuclear@39: #endif	/* USE_WSYS_MODULE_IOS */