X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fbufferable.cpp;h=e022a71676eed0a52ee36ed9be087b3eac1e9999;hb=9be04243c92f024327e74ad8d48861581d83b7ed;hp=60df3eec92c1bd188dbab825e998baf1dd97e7b4;hpb=900cf40469972b1f32a6dbac95c42f46c3726fa8;p=libs%2Fgl.git

diff --git a/source/bufferable.cpp b/source/bufferable.cpp
index 60df3eec..e022a716 100644
--- a/source/bufferable.cpp
+++ b/source/bufferable.cpp
@@ -1,4 +1,7 @@
 #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"
 
@@ -12,6 +15,7 @@ Bufferable::Bufferable():
 	offset(0),
 	next_in_buffer(0),
 	prev_in_buffer(0),
+	location_dirty(false),
 	dirty(false)
 { }
 
@@ -39,9 +43,16 @@ void Bufferable::use_buffer(Buffer *buf, Bufferable *prev)
 		}
 	}
 
+	location_dirty = true;
+	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)
@@ -68,18 +79,20 @@ void Bufferable::update_offset()
 	if(new_offset!=offset)
 	{
 		offset = new_offset;
+		location_dirty = true;
 		dirty = true;
-		offset_changed();
 	}
 
 	if(next_in_buffer)
 		next_in_buffer->update_offset();
-
-	/* Do not resize the buffer here, as more bufferables may be added before
-	the buffer is actually used. */
+	else if(buffer && offset+get_data_size()>buffer->get_size())
+	{
+		location_dirty = true;
+		dirty = true;
+	}
 }
 
-void Bufferable::update_buffer() const
+bool Bufferable::resize_buffer() const
 {
 	if(offset+get_data_size()>=buffer->get_size())
 	{
@@ -91,17 +104,74 @@ 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_size() const
+{
+	if(resize_buffer())
+	{
+		Conditional<BindRestore> _bind(!ARB_direct_state_access, buffer, buffer->get_type());
+
+		/* 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);
+	}
+}
+
+void Bufferable::upload_data(char *target) const
+{
+	unsigned data_size = get_data_size();
+	if(location_dirty)
+	{
+		update_buffer_size();
+		location_changed(buffer, offset, data_size);
+		location_dirty = false;
+	}
+
+	if(target)
+	{
+		const char *source = reinterpret_cast<const char *>(get_data_pointer());
+		copy(source, source+data_size, target);
+	}
+	else
+		buffer->sub_data(offset, data_size, get_data_pointer());
 	dirty = false;
 }
 
+
+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);
+	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);
+}
+
 } // namespace GL
 } // namespace Msp