X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fbufferable.cpp;h=3178e0adefa38f72e2d8aa22ecbae6769c50cdc7;hp=eb3f1c006e925244f1c58ff671e4d28237378f4a;hb=08e19bc2b4eba572bc7699378cf55cd8772ac67e;hpb=02feac06937ec4e8e122a833b4903ccf0bd6d030

diff --git a/source/bufferable.cpp b/source/bufferable.cpp
index eb3f1c00..3178e0ad 100644
--- a/source/bufferable.cpp
+++ b/source/bufferable.cpp
@@ -1,4 +1,6 @@
 #include <stdexcept>
+#include <msp/core/raii.h>
+#include <msp/gl/extensions/arb_direct_state_access.h>
 #include "bindable.h"
 #include "buffer.h"
 #include "bufferable.h"
@@ -40,9 +42,15 @@ void Bufferable::use_buffer(Buffer *buf, Bufferable *prev)
 		}
 	}
 
+	dirty = true;
 	update_offset();
 }
 
+Bufferable::AsyncUpdater *Bufferable::refresh_async() const
+{
+	return dirty ? new AsyncUpdater(*this) : 0;
+}
+
 void Bufferable::unlink_from_buffer()
 {
 	if(prev_in_buffer)
@@ -80,9 +88,8 @@ void Bufferable::update_offset()
 	the buffer is actually used. */
 }
 
-void Bufferable::update_buffer() const
+bool Bufferable::resize_buffer() const
 {
-	BindRestore bind(buffer, buffer->get_type());
 	if(offset+get_data_size()>=buffer->get_size())
 	{
 		const Bufferable *last = this;
@@ -93,17 +100,74 @@ void Bufferable::update_buffer() const
 		if(total_size>buffer->get_size())
 		{
 			buffer->data(total_size, 0);
-			/* Resizing the buffer invalidates its contents.  Non-dirty data may
-			be in use, so reupload it. */
-			for(const Bufferable *b=last; b; b=b->prev_in_buffer)
-				if(!b->dirty)
-					b->upload_data();
+			return true;
 		}
 	}
 
-	upload_data();
+	return false;
+}
+
+void Bufferable::update_buffer() const
+{
+	Conditional<BindRestore> _bind(!ARB_direct_state_access, buffer, buffer->get_type());
+
+	if(resize_buffer())
+	{
+		/* Resizing the buffer invalidates its contents.  Non-dirty data may
+		be in use, so reupload it. */
+		for(const Bufferable *b=prev_in_buffer; b; b=b->prev_in_buffer)
+			if(!b->dirty)
+				b->upload_data(0);
+		for(const Bufferable *b=next_in_buffer; b; b=b->next_in_buffer)
+			if(!b->dirty)
+				b->upload_data(0);
+	}
+
+	upload_data(0);
 	dirty = false;
 }
 
+void Bufferable::upload_data(char *target) const
+{
+	if(target)
+	{
+		const char *source = reinterpret_cast<const char *>(get_data_pointer());
+		copy(source, source+get_data_size(), target);
+	}
+	else
+		buffer->sub_data(offset, get_data_size(), get_data_pointer());
+}
+
+
+Bufferable::AsyncUpdater::AsyncUpdater(const Bufferable &b):
+	bufferable(b)
+{
+	buffer_resized = bufferable.resize_buffer();
+	mapped_address = reinterpret_cast<char *>(bufferable.buffer->map(WRITE_ONLY));
+}
+
+Bufferable::AsyncUpdater::~AsyncUpdater()
+{
+	bufferable.buffer->unmap();
+}
+
+void Bufferable::AsyncUpdater::upload_data()
+{
+	bufferable.upload_data(mapped_address+bufferable.offset);
+	// Update all bufferables in the same buffer at once
+	for(const Bufferable *b=bufferable.prev_in_buffer; b; b=b->prev_in_buffer)
+		if(b->dirty || buffer_resized)
+		{
+			b->upload_data(mapped_address+b->offset);
+			b->dirty = false;
+		}
+	for(const Bufferable *b=bufferable.next_in_buffer; b; b=b->next_in_buffer)
+		if(b->dirty || buffer_resized)
+		{
+			b->upload_data(mapped_address+b->offset);
+			b->dirty = false;
+		}
+}
+
 } // namespace GL
 } // namespace Msp