Remember texture size so we don't have to load the image again

Author: phoboslab

Source/Ejecta/EJCanvas/EJTexture.h

@@ -10,6 +10,7 @@
 	BOOL drawFlippedY;
 	BOOL isCompressed;
 	BOOL lazyLoaded;
+	BOOL dimensionsKnown;
 	short width, height;
 	NSString *fullPath;
 	EJTextureStorage *textureStorage;

Source/Ejecta/EJCanvas/EJTexture.m

@@ -158,6 +158,7 @@ - (id)initWithWidth:(int)widthp height:(int)heightp format:(GLenum)formatp {
 
 		width = widthp;
 		height = heightp;
+		dimensionsKnown = true;
 		[self createWithPixels:NULL format:formatp];
 	}
 	return self;
@@ -171,6 +172,7 @@ - (id)initWithWidth:(int)widthp height:(int)heightp pixels:(NSData *)pixels {
 
 		width = widthp;
 		height = heightp;
+		dimensionsKnown = true;
 		[self createWithPixels:pixels format:GL_RGBA];
 	}
 	return self;
@@ -278,16 +280,25 @@ - (BOOL)isDynamic {
 }
 
 - (short)width {
+	if( dimensionsKnown ) {
+		return width;
+	}
 	EJ_ENSURE_LAZY_LOADED_STORAGE();
 	return width;
 }
 
 - (short)height {
+	if( dimensionsKnown ) {
+		return height;
+	}
 	EJ_ENSURE_LAZY_LOADED_STORAGE();
 	return height;
 }
 
 - (float)contentScale {
+	if( dimensionsKnown ) {
+		return contentScale;
+	}
 	EJ_ENSURE_LAZY_LOADED_STORAGE();
 	return contentScale;
 }
@@ -323,6 +334,7 @@ - (void)createWithTexture:(EJTexture *)other {
 	height = other->height;
 	isCompressed = other->isCompressed;
 	lazyLoaded = other->lazyLoaded;
+	dimensionsKnown = other->dimensionsKnown;
 
 	textureStorage = [other->textureStorage retain];
 }
@@ -511,6 +523,7 @@ - (NSMutableData *)loadPixelsFromPath:(NSString *)path {
 		PVRTextureHeader *header = (PVRTextureHeader *)pixels.bytes;
 		width = header->width;
 		height = header->height;
+		dimensionsKnown = true;
 		isCompressed = true;
 	}
 
@@ -535,6 +548,7 @@ - (NSMutableData *)loadPixelsFromUIImage:(UIImage *)image {
 
 	width = CGImageGetWidth(cgImage);
 	height = CGImageGetHeight(cgImage);
+	dimensionsKnown = true;
 
 	NSMutableData *pixels = [NSMutableData dataWithLength:width*height*4];
 	CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();