X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fcore%2Fbufferable.h;h=25d29fd8f393021c6d6af4f86e624d77ec79705b;hb=5003bcfeb0832ec2d0f74f4149bc97888a70a900;hp=8bd3f77f021d39e2722f0b8d7e13e5f60ae2a353;hpb=e70662d7812464159f2e47f4bebb69d88f89ae93;p=libs%2Fgl.git

diff --git a/source/core/bufferable.h b/source/core/bufferable.h
index 8bd3f77f..25d29fd8 100644
--- a/source/core/bufferable.h
+++ b/source/core/bufferable.h
@@ -12,9 +12,7 @@ class Buffer;
 Base class for things that can store data in buffers.  Multiple Bufferables
 may be put in the same buffer.
 
-A dirty flag is provided for derived classes.  It should be set when the data
-in the buffer is considered out of date, and is cleared by Bufferable after
-uploading fresh data to the buffer.
+Derived classes should call mark_dirty() when the stored data has changed.
 */
 class Bufferable: public NonCopyable
 {
@@ -43,9 +41,9 @@ private:
 	Bufferable *next_in_buffer = 0;
 	Bufferable *prev_in_buffer = 0;
 	mutable bool location_dirty = false;
-protected:
-	mutable bool dirty = false;
+	mutable uint8_t dirty = 0;
 
+protected:
 	Bufferable() = default;
 	Bufferable(Bufferable &&);
 public:
@@ -54,7 +52,7 @@ public:
 	/** Sets the buffer to use.  If prev is not null, it must use the same
 	buffer, and this object is inserted after it.
 
-	Date is not uploaded immediately, but only when refresh() is called. */
+	Data is not uploaded immediately, but only when refresh() is called. */
 	void use_buffer(Buffer *, Bufferable *prev = 0);
 
 	/** Sets the buffer for the entire chain of objects. */
@@ -62,14 +60,14 @@ public:
 
 	/** Returns the total amount of storage required by this object and others
 	in the same chain, including any padding required by object alignment. */
-	std::size_t get_required_buffer_size() const;
+	std::size_t get_required_buffer_size(bool = false) const;
 
 	/** Uploads new data into the buffer if necessary. */
-	void refresh() const { if(dirty) upload_data(0); }
+	void refresh(unsigned f) const { if(dirty&(1<<f)) upload_data(f, 0); }
 
 	/** Returns an object which can be used to upload data to the buffer using
 	mapped memory.  If data is not dirty, returns null. */
-	AsyncUpdater *refresh_async() const { return dirty ? new AsyncUpdater(*this) : 0; }
+	AsyncUpdater *refresh_async() const { return dirty ? create_async_updater() : 0; }
 
 private:
 	void unlink_from_buffer();
@@ -94,6 +92,10 @@ protected:
 	changes. */
 	void update_offset();
 
+	/* Indicates that the data of the bufferable has changed and should be
+	uploaded to the buffer again. */
+	void mark_dirty();
+
 public:
 	/** Returns the offset of the data from the beginning of the buffer. */
 	std::size_t get_offset() const { return offset; }
@@ -101,7 +103,9 @@ public:
 private:
 	/** Uploads data to the buffer.  Receives pointer to mapped buffer memory as
 	parameter, or null to use the buffer upload interface. */
-	void upload_data(char *) const;
+	void upload_data(unsigned, char *) const;
+
+	AsyncUpdater *create_async_updater() const;
 };
 
 } // namespace GL