Render final pipeline output into the bound framebuffer

diff --git a/source/pipeline.cpp b/source/pipeline.cpp
index 59e6bbb843c40bbf470087eb63b7bf9a8fa9f987..c6260f0ee73f15d060436ec99edf3d71aa57a3bf 100644 (file)
--- a/source/pipeline.cpp
+++ b/source/pipeline.cpp
@@ -137,10 +137,14 @@ void Pipeline::render(Renderer &renderer, const Tag &tag) const
        if(!in_frame)
                setup_frame();
 
+       const Framebuffer *out_fbo = Framebuffer::current();
+       /* Binding the current object is a no-op, but this will restore the original
+       FBO in case an exception is thrown. */
+       Bind restore_fbo(out_fbo, true);
+
        if(target[0])
        {
                Framebuffer &fbo = (samples ? target_ms->fbo : target[0]->fbo);
-               // XXX exception safety
                fbo.bind();
                fbo.clear(COLOR_BUFFER_BIT|DEPTH_BUFFER_BIT);
        }
@@ -167,11 +171,11 @@ void Pipeline::render(Renderer &renderer, const Tag &tag) const
                        if(i+1<postproc.size())
                                target[1-j]->fbo.bind();
                        else
-                               Framebuffer::unbind();
+                               out_fbo->bind();
                        postproc[i]->render(target[j]->color, target[j]->depth);
                }
 
-               Framebuffer::unbind();
+               out_fbo->bind();
        }
 
        if(!was_in_frame)