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我已經使用這個EAGLView過去（約的iOS 4.3）爲什麼我的EAGLView無法創建幀緩衝區？
#import <UIKit/UIKit.h>
#import <QuartzCore/QuartzCore.h>
#import <OpenGLES/EAGLDrawable.h>
#import "EAGLView.h"
#import "DrawingUtil.h"
#define USE_DEPTH_BUFFER 0
@interface EAGLView (EAGLViewPrivate)
- (BOOL)createFramebuffer;
- (void)destroyFramebuffer;
@end
@interface EAGLView (EAGLViewSprite)
- (void)setupView;
@end
@implementation EAGLView
@synthesize animationInterval, applicationResignedActive;
// You must implement this
+ (Class) layerClass
{
return [CAEAGLLayer class];
}
- (id)initWithFrame:(CGRect)frame
{
NSLog(@"[INFO] initWithFrame %f %f %f %f", frame.origin.x, frame.origin.y, frame.size.width, frame.size.height);
frame.size.width = 256;
frame.size.width = 256;
if((self = [super initWithFrame:frame])) {
// Get the layer
CAEAGLLayer *eaglLayer = (CAEAGLLayer*) self.layer;
eaglLayer.opaque = NO;
eaglLayer.drawableProperties = [NSDictionary dictionaryWithObjectsAndKeys:
[NSNumber numberWithBool:FALSE], kEAGLDrawablePropertyRetainedBacking, kEAGLColorFormatRGBA8, kEAGLDrawablePropertyColorFormat, nil];
context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES1];
NSLog(@"[INFO] Ready to create framebuffer");
if(!context || ![EAGLContext setCurrentContext:context] || ![self createFramebuffer]) {
[self release];
return nil;
}
animationInterval = 1.0/30.0;
[self setupView];
[self drawView];
}
self.opaque = NO;
return self;
}
- (void)layoutSubviews
{
[EAGLContext setCurrentContext:context];
[self destroyFramebuffer];
[self createFramebuffer];
[self drawView];
}
- (BOOL)createFramebuffer
{
glGenFramebuffersOES(1, &viewFramebuffer);
glGenRenderbuffersOES(1, &viewRenderbuffer);
glBindFramebufferOES(GL_FRAMEBUFFER_OES, viewFramebuffer);
glBindRenderbufferOES(GL_RENDERBUFFER_OES, viewRenderbuffer);
[context renderbufferStorage:GL_RENDERBUFFER_OES fromDrawable:(id<EAGLDrawable>)self.layer];
glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, viewRenderbuffer);
glGetRenderbufferParameterivOES(GL_RENDERBUFFER_OES, GL_RENDERBUFFER_WIDTH_OES, &backingWidth);
glGetRenderbufferParameterivOES(GL_RENDERBUFFER_OES, GL_RENDERBUFFER_HEIGHT_OES, &backingHeight);
if(USE_DEPTH_BUFFER) {
glGenRenderbuffersOES(1, &depthRenderbuffer);
glBindRenderbufferOES(GL_RENDERBUFFER_OES, depthRenderbuffer);
glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_DEPTH_COMPONENT16_OES, backingWidth, backingHeight);
glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, GL_DEPTH_ATTACHMENT_OES, GL_RENDERBUFFER_OES, depthRenderbuffer);
}
if(glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES) != GL_FRAMEBUFFER_COMPLETE_OES) {
NSLog(@"failed to make complete framebuffer object %x", glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES));
return NO;
}
return YES;
}
- (void)destroyFramebuffer
{
glDeleteFramebuffersOES(1, &viewFramebuffer);
viewFramebuffer = 0;
glDeleteRenderbuffersOES(1, &viewRenderbuffer);
viewRenderbuffer = 0;
if(depthRenderbuffer) {
glDeleteRenderbuffersOES(1, &depthRenderbuffer);
depthRenderbuffer = 0;
}
}
- (void)startAnimation
{
animationTimer = [NSTimer scheduledTimerWithTimeInterval:animationInterval target:self selector:@selector(drawView) userInfo:nil repeats:YES];
animationStarted = [NSDate timeIntervalSinceReferenceDate];
}
- (void)stopAnimation
{
[animationTimer invalidate];
animationTimer = nil;
}
- (void)setAnimationInterval:(NSTimeInterval)interval
{
animationInterval = interval;
if(animationTimer) {
[self stopAnimation];
[self startAnimation];
}
}
- (void)setupView
{
self.opaque = NO;
// Sets up matrices and transforms for OpenGL ES
glViewport(0, 0, backingWidth, backingHeight);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrthof(0, backingWidth, 0, backingHeight, -1.0f, 1.0f);
glMatrixMode(GL_MODELVIEW);
// Clears the view with (transparent) black
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
// glEnableClientState(GL_VERTEX_ARRAY);
}
// Updates the OpenGL view when the timer fires
- (void)drawView
{
// the NSTimer seems to fire one final time even though it's been invalidated
// so just make sure and not draw if we're resigning active
if (self.applicationResignedActive) return;
// Make sure that you are drawing to the current context
[EAGLContext setCurrentContext:context];
glBindFramebufferOES(GL_FRAMEBUFFER_OES, viewFramebuffer);
[delegate drawView:self forTime:([NSDate timeIntervalSinceReferenceDate] - animationStarted)];
glBindRenderbufferOES(GL_RENDERBUFFER_OES, viewRenderbuffer);
[context presentRenderbuffer:GL_RENDERBUFFER_OES];
}
// Stop animating and release resources when they are no longer needed.
- (void)dealloc
{
[self stopAnimation];
if([EAGLContext currentContext] == context) {
[EAGLContext setCurrentContext:nil];
}
[context release];
context = nil;
[super dealloc];
}
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
if ([(id)delegate respondsToSelector:@selector(touchesBegan:withEvent:)])
[delegate touchesBegan:touches withEvent:event];
}
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
if ([(id)delegate respondsToSelector:@selector(touchesMoved:withEvent:)])
[delegate touchesMoved:touches withEvent:event];
}
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
if ([(id)delegate respondsToSelector:@selector(touchesEnded:withEvent:)])
[delegate touchesEnded:touches withEvent:event];
}
- (id <EAGLViewDelegate>)delegate { return delegate; }
- (void)setDelegate:(id <EAGLViewDelegate>)v
{
delegate = v;
}
@end
這裏是我的主要觀點創建EAGLView：
glView = [[EAGLView alloc] initWithFrame:[self frame]];
[self addSubview:glView];
NSLog(@"[INFO] create glView %o", [self frame]);
glView.delegate = self;
glView.userInteractionEnabled = FALSE;
[glView setAnimationInterval:1./30.];
[glView startAnimation];
我越來越GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_OES當我Init這EAGLView。我的主要觀點是用於Titanium模塊的TiUIView。這可能是一個線程問題嗎？