From: Mikko Rasa <tdb@tdb.fi>
Date: Sun, 15 Dec 2013 18:03:20 +0000 (+0200)
Subject: Explicitly bind buffer in Bufferable::update_buffer
X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=commitdiff_plain;h=5c51ba1057b222ab44eca253828d58e107e80df0

Explicitly bind buffer in Bufferable::update_buffer

This reduces unnecessary bind/unbind thrashing if the buffer needs to be
resized.
---

diff --git a/source/bufferable.cpp b/source/bufferable.cpp
index 60df3eec..1f6122e0 100644
--- a/source/bufferable.cpp
+++ b/source/bufferable.cpp
@@ -81,6 +81,8 @@ void Bufferable::update_offset()
 
 void Bufferable::update_buffer() const
 {
+	const Buffer *old_buffer = Buffer::current(buffer->get_type());
+	buffer->bind();
 	if(offset+get_data_size()>=buffer->get_size())
 	{
 		const Bufferable *last = this;
@@ -100,6 +102,10 @@ void Bufferable::update_buffer() const
 	}
 
 	upload_data();
+	if(old_buffer)
+		old_buffer->bind_to(buffer->get_type());
+	else
+		buffer->unbind();
 	dirty = false;
 }