Rewrite Bind as two different classes

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

diff --git a/source/pipeline.cpp b/source/pipeline.cpp
index bfd7bc679c6d69c4432d8f3d52a83003c4b16157..0546a4e847829f33844cf6236db2047816ba0b2f 100644 (file)
--- a/source/pipeline.cpp
+++ b/source/pipeline.cpp
@@ -21,7 +21,8 @@ Pipeline::Pipeline(unsigned w, unsigned h, bool d):
        height(h),
        hdr(d),
        samples(0),
-       target_ms(0)
+       target_ms(0),
+       in_frame(false)
 {
        target[0] = 0;
        target[1] = 0;
@@ -36,14 +37,29 @@ Pipeline::~Pipeline()
 
 void Pipeline::set_hdr(bool h)
 {
+       if(h==hdr)
+               return;
+
        hdr = h;
-       create_targets(true);
+       create_targets(2);
 }
 
 void Pipeline::set_multisample(unsigned s)
 {
+       if(s==samples)
+               return;
+
+       unsigned old_samples = samples;
        samples = s;
-       create_targets(false);
+       try
+       {
+               create_targets(1);
+       }
+       catch(...)
+       {
+               samples = old_samples;
+               throw;
+       }
 }
 
 void Pipeline::set_camera(const Camera *c)
@@ -95,7 +111,21 @@ void Pipeline::remove_renderable(const Renderable &r)
 void Pipeline::add_postprocessor(PostProcessor &pp)
 {
        postproc.push_back(&pp);
-       create_targets(false);
+       create_targets(0);
+}
+
+void Pipeline::setup_frame() const
+{
+       in_frame = true;
+       for(vector<Slot>::const_iterator i=renderables.begin(); i!=renderables.end(); ++i)
+               i->renderable->setup_frame();
+}
+
+void Pipeline::finish_frame() const
+{
+       in_frame = false;
+       for(vector<Slot>::const_iterator i=renderables.begin(); i!=renderables.end(); ++i)
+               i->renderable->finish_frame();
 }
 
 void Pipeline::render(const Tag &tag) const
@@ -112,10 +142,16 @@ void Pipeline::render(Renderer &renderer, const Tag &tag) const
        if(tag.id)
                return;
 
+       bool was_in_frame = in_frame;
+       if(!in_frame)
+               setup_frame();
+
+       const Framebuffer *out_fbo = Framebuffer::current();
+       // XXX Make sure the correct FBO is restored if an exception is thrown
+
        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);
        }
@@ -124,13 +160,15 @@ void Pipeline::render(Renderer &renderer, const Tag &tag) const
        {
                Bind bind_depth_test(i->get_depth_test());
                Bind bind_blend(i->get_blend());
-               Bind bind_lighting(i->get_lighting());
+               renderer.set_lighting(i->get_lighting());
 
                for(vector<Slot>::const_iterator j=renderables.begin(); j!=renderables.end(); ++j)
                        if(j->passes.empty() || j->passes.count(i->get_tag()))
-                               j->renderable->render(renderer, i->get_tag());
+                               renderer.render(*j->renderable, i->get_tag());
        }
 
+       renderer.escape();
+
        if(target[0])
        {
                if(samples)
@@ -142,31 +180,40 @@ 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)
+               finish_frame();
 }
 
-void Pipeline::create_targets(bool recreate)
+void Pipeline::create_targets(unsigned recreate)
 {
-       if(recreate)
+       if(recreate>=2)
        {
                delete target[0];
                delete target[1];
-               delete target_ms;
                target[0] = 0;
                target[1] = 0;
+       }
+       if(recreate>=1)
+       {
+               delete target_ms;
                target_ms = 0;
        }
 
        PixelFormat fmt = (hdr ? RGB16F : RGB);
-       if(!target[0])
-               target[0] = new RenderTarget(width, height, fmt);
-       if(!target[1] && postproc.size()>1)
-               target[1] = new RenderTarget(width, height, fmt);
+       if(!postproc.empty() || samples)
+       {
+               if(!target[0])
+                       target[0] = new RenderTarget(width, height, fmt);
+               if(!target[1] && postproc.size()>1)
+                       target[1] = new RenderTarget(width, height, fmt);
+       }
 
        if(!target_ms && samples)
                target_ms = new MultisampleTarget(width, height, samples, fmt);
@@ -214,6 +261,8 @@ Pipeline::RenderTarget::RenderTarget(unsigned w, unsigned h, PixelFormat f)
        depth.set_wrap(CLAMP_TO_EDGE);
        depth.storage(DEPTH_COMPONENT, w, h);
        fbo.attach(DEPTH_ATTACHMENT, depth, 0);
+
+       fbo.require_complete();
 }
 
 
@@ -224,6 +273,8 @@ Pipeline::MultisampleTarget::MultisampleTarget(unsigned w, unsigned h, unsigned
 
        depth.storage_multisample(s, DEPTH_COMPONENT, w, h);
        fbo.attach(DEPTH_ATTACHMENT, depth);
+
+       fbo.require_complete();
 }
 
 } // namespace GL