X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fbufferable.h;h=a88f7b07a719535d426e262157fc8ef10879bd80;hp=0a30e80e817e8343b374094651008a7d03935714;hb=a4549c55a6d47129bd9e42c6a49a671b759ce6d9;hpb=900cf40469972b1f32a6dbac95c42f46c3726fa8

diff --git a/source/bufferable.h b/source/bufferable.h
index 0a30e80e..a88f7b07 100644
--- a/source/bufferable.h
+++ b/source/bufferable.h
@@ -14,6 +14,21 @@ uploading fresh data to the buffer.
 */
 class Bufferable
 {
+public:
+	class AsyncUpdater
+	{
+	private:
+		const Bufferable &bufferable;
+		char *mapped_address;
+		bool buffer_resized;
+
+	public:
+		AsyncUpdater(const Bufferable &);
+		~AsyncUpdater();
+
+		void upload_data();
+	};
+
 private:
 	Buffer *buffer;
 	unsigned offset;
@@ -22,7 +37,6 @@ private:
 protected:
 	mutable bool dirty;
 
-protected:
 	Bufferable();
 public:
 	virtual ~Bufferable();
@@ -31,6 +45,11 @@ public:
 	buffer, and this object is inserted after it. */
 	void use_buffer(Buffer *buf, Bufferable *prev = 0);
 
+	/** Uploads new data into the buffer if necessary. */
+	void refresh() const { if(dirty) update_buffer(); }
+
+	AsyncUpdater *refresh_async() const;
+
 private:
 	void unlink_from_buffer();
 
@@ -41,6 +60,9 @@ protected:
 	/** Returns the amount of data to be stored in the buffer, in bytes. */
 	virtual unsigned get_data_size() const = 0;
 
+	/** Returns a pointer to the start of data in client memory. */
+	virtual const void *get_data_pointer() const = 0;
+
 	/** Returns the alignment required for the data, in bytes.  The offset is
 	guaranteed to be a multiple of this. */
 	virtual unsigned get_alignment() const { return 1; }
@@ -56,11 +78,16 @@ protected:
 	/** Called when the offset for the data has changed. */
 	virtual void offset_changed() { }
 
+private:
+	bool resize_buffer() const;
+
+protected:
 	/** Resizes the buffer if necessary and calls upload_data(). */
 	void update_buffer() const;
 
-	/** Uploads data to the buffer. */
-	virtual void upload_data() const = 0;
+	/** 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;
 };
 
 } // namespace GL