X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fframebuffer.cpp;h=1c2ae519bade1ef1059df7ff1a43dbdd33a23440;hb=9ea7e740503b09298ae814b1bf521312d1744db2;hp=8c618ce51b7112ba96f4332cb1e08de683744397;hpb=357acfb941a8b5b4a6fb36e2134707d46e028d88;p=libs%2Fgl.git

diff --git a/source/framebuffer.cpp b/source/framebuffer.cpp
index 8c618ce5..1c2ae519 100644
--- a/source/framebuffer.cpp
+++ b/source/framebuffer.cpp
@@ -1,6 +1,7 @@
 #include <msp/gl/extensions/arb_draw_buffers.h>
 #include <msp/gl/extensions/ext_framebuffer_blit.h>
 #include <msp/gl/extensions/ext_framebuffer_object.h>
+#include <msp/gl/extensions/msp_draw_buffer.h>
 #include "error.h"
 #include "framebuffer.h"
 #include "misc.h"
@@ -109,22 +110,17 @@ void Framebuffer::update_attachment(unsigned mask) const
 				color_bufs.push_back(attch.attachment);
 		}
 
-		if(color_bufs.empty())
-		{
-			glDrawBuffer(GL_NONE);
-			glReadBuffer(GL_NONE);
-		}
-		else if(color_bufs.size()==1)
-		{
-			glDrawBuffer(color_bufs.front());
-			glReadBuffer(color_bufs.front());
-		}
-		else
-		{
+		if(color_bufs.size()>1)
 			static Require _req(ARB_draw_buffers);
+
+		GLenum first_buffer = (color_bufs.empty() ? GL_NONE : color_bufs.front());
+		if(ARB_draw_buffers)
 			glDrawBuffers(color_bufs.size(), &color_bufs[0]);
-			glReadBuffer(color_bufs.front());
-		}
+		else if(MSP_draw_buffer)
+			glDrawBuffer(first_buffer);
+
+		if(MSP_draw_buffer)
+			glReadBuffer(first_buffer);
 	}
 	else
 		dirty |= mask;