From: Mikko Rasa <tdb@tdb.fi>
Date: Wed, 25 Apr 2018 11:53:33 +0000 (+0300)
Subject: Check for OES_mapbuffer in Buffer::unmap
X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=commitdiff_plain;h=bb162b9edd4b8c0e9faeed75da4148f5b9735450

Check for OES_mapbuffer in Buffer::unmap

It might have been mapped through ARB_map_buffer_range, in which case
OES_mapbuffer didn't get initialized in Buffer::map.
---

diff --git a/source/buffer.cpp b/source/buffer.cpp
index 040ae8df..2b18d7d7 100644
--- a/source/buffer.cpp
+++ b/source/buffer.cpp
@@ -110,13 +110,16 @@ void *Buffer::map(BufferAccess access)
 
 bool Buffer::unmap()
 {
+	// TODO check if it's mapped
 	if(ARB_direct_state_access)
 		return glUnmapNamedBuffer(id);
-	else
+	else if(OES_mapbuffer)
 	{
 		BindRestore _bind(this, type);
 		return glUnmapBuffer(type);
 	}
+	else
+		return true;
 }
 
 void Buffer::bind_to(BufferType t) const