Set read buffer as well as draw buffer for FBO

[libs/gl.git] / source / framebuffer.cpp

diff --git a/source/framebuffer.cpp b/source/framebuffer.cpp
index 8e8be663e32f3ad48430b84eb9a55e1ed24543a0..8f54020009586cd5b20e97f64a7faa14d2327e17 100644 (file)
--- a/source/framebuffer.cpp
+++ b/source/framebuffer.cpp
@@ -111,13 +111,20 @@ void Framebuffer::update_attachment(unsigned mask) const
                }
 
                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
                {
                        static Require _req(ARB_draw_buffers);
                        glDrawBuffers(color_bufs.size(), &color_bufs[0]);
+                       glReadBuffer(color_bufs.front());
                }
        }
        else