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 60df3eec92c1bd188dbab825e998baf1dd97e7b4..1f6122e0914561e91338a80650351ea48ae28306 100644 (file)
--- 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;
 }