X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fbufferable.h;h=86c5c77fc4d39226295c3e442903eb476e85de1b;hb=5f78db03b3285c977760a41da1e3927720e50352;hp=a88f7b07a719535d426e262157fc8ef10879bd80;hpb=9f25c3632cfd5c669a2ad24255e2e85dfa1cb460;p=libs%2Fgl.git

diff --git a/source/bufferable.h b/source/bufferable.h
index a88f7b07..86c5c77f 100644
--- a/source/bufferable.h
+++ b/source/bufferable.h
@@ -20,7 +20,6 @@ public:
 	private:
 		const Bufferable &bufferable;
 		char *mapped_address;
-		bool buffer_resized;
 
 	public:
 		AsyncUpdater(const Bufferable &);
@@ -34,6 +33,7 @@ private:
 	unsigned offset;
 	Bufferable *next_in_buffer;
 	Bufferable *prev_in_buffer;
+	mutable bool location_dirty;
 protected:
 	mutable bool dirty;
 
@@ -45,18 +45,27 @@ public:
 	buffer, and this object is inserted after it. */
 	void use_buffer(Buffer *buf, Bufferable *prev = 0);
 
+	/** Informs the objects in this chain that the buffer has been resized and
+	data should be reuploaded. */
+	void buffer_resized();
+
+	/** Returns the total amount of storage required by this object and others
+	in the same chain, including any alignment between objects. */
+	unsigned get_required_buffer_size() const;
+
 	/** Uploads new data into the buffer if necessary. */
-	void refresh() const { if(dirty) update_buffer(); }
+	void refresh() const { if(buffer && dirty) upload_data(0); }
 
 	AsyncUpdater *refresh_async() const;
 
 private:
 	void unlink_from_buffer();
 
-protected:
+public:
 	/** Returns the buffer in which the data is stored. */
-	Buffer *get_buffer() const { return buffer; }
+	const Buffer *get_buffer() const { return buffer; }
 
+protected:
 	/** Returns the amount of data to be stored in the buffer, in bytes. */
 	virtual unsigned get_data_size() const = 0;
 
@@ -75,19 +84,13 @@ protected:
 	/** Returns the offset where the data should be uploaded. */
 	unsigned get_offset() const { return offset; }
 
-	/** Called when the offset for the data has changed. */
-	virtual void offset_changed() { }
+	/** Called when the target buffer or offset within it has changed. */
+	virtual void location_changed(Buffer *, unsigned, unsigned) const { }
 
 private:
-	bool resize_buffer() const;
-
-protected:
-	/** Resizes the buffer if necessary and calls upload_data(). */
-	void update_buffer() const;
-
 	/** Uploads data to the buffer.  Receives pointer to mapped buffer memory as
 	parameter.  If null, buffer interface should be used instead. */
-	virtual void upload_data(char *) const;
+	void upload_data(char *) const;
 };
 
 } // namespace GL