]> git.tdb.fi Git - libs/gl.git/blobdiff - source/pipeline.cpp
Use DSA for binding textures if available
[libs/gl.git] / source / pipeline.cpp
index 466aa23c69b6b3107457817f8efea8f33aa829ac..53b51d7924bc91cfeb6b8c4e84ef6cf24134061a 100644 (file)
@@ -9,21 +9,37 @@
 #include "renderer.h"
 #include "tests.h"
 #include "texture2d.h"
+#include "view.h"
 
 using namespace std;
 
 namespace Msp {
 namespace GL {
 
-Pipeline::Pipeline(unsigned w, unsigned h, bool d):
-       camera(0),
-       width(w),
-       height(h),
-       hdr(d),
-       samples(0),
-       target_ms(0),
-       in_frame(false)
+Pipeline::Pipeline(unsigned w, unsigned h, bool d)
 {
+       init(w, h);
+       hdr = d;
+}
+
+Pipeline::Pipeline(const View &view)
+{
+       init(view.get_width(), view.get_height());
+}
+
+Pipeline::Pipeline(const Framebuffer &fbo)
+{
+       init(fbo.get_width(), fbo.get_height());
+}
+
+void Pipeline::init(unsigned w, unsigned h)
+{
+       camera = 0;
+       width = w;
+       height = h;
+       hdr = false;
+       samples = 0;
+       target_ms = 0;
        target[0] = 0;
        target[1] = 0;
 }
@@ -37,14 +53,38 @@ Pipeline::~Pipeline()
 
 void Pipeline::set_hdr(bool h)
 {
+       if(h==hdr)
+               return;
+
+       bool old_hdr= hdr;
        hdr = h;
-       create_targets(true);
+       try
+       {
+               create_targets(2);
+       }
+       catch(...)
+       {
+               hdr = old_hdr;
+               throw;
+       }
 }
 
 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)
@@ -54,11 +94,11 @@ void Pipeline::set_camera(const Camera *c)
 
 Pipeline::Pass &Pipeline::add_pass(const Tag &tag)
 {
-       passes.push_back(Pass(tag));
+       passes.push_back(Pass(tag, 0));
        return passes.back();
 }
 
-void Pipeline::add_renderable(const Renderable &r)
+void Pipeline::add_renderable(Renderable &r)
 {
        for(vector<Slot>::iterator i=renderables.begin(); i!=renderables.end(); ++i)
                if(i->renderable==&r)
@@ -70,7 +110,7 @@ void Pipeline::add_renderable(const Renderable &r)
        renderables.push_back(&r);
 }
 
-void Pipeline::add_renderable_for_pass(const Renderable &r, const Tag &tag)
+void Pipeline::add_renderable_for_pass(Renderable &r, const Tag &tag)
 {
        for(vector<Slot>::iterator i=renderables.begin(); i!=renderables.end(); ++i)
                if(i->renderable==&r)
@@ -83,7 +123,7 @@ void Pipeline::add_renderable_for_pass(const Renderable &r, const Tag &tag)
        renderables.back().passes.insert(tag);
 }
 
-void Pipeline::remove_renderable(const Renderable &r)
+void Pipeline::remove_renderable(Renderable &r)
 {
        for(vector<Slot>::iterator i=renderables.begin(); i!=renderables.end(); ++i)
                if(i->renderable==&r)
@@ -93,33 +133,62 @@ void Pipeline::remove_renderable(const Renderable &r)
                }
 }
 
+Pipeline::Pass &Pipeline::add_pass(const Tag &tag, Renderable &r)
+{
+       passes.push_back(Pass(tag, &r));
+       return passes.back();
+}
+
 void Pipeline::add_postprocessor(PostProcessor &pp)
 {
-       postproc.push_back(&pp);
-       create_targets(false);
+       add_postprocessor(&pp, true);
+}
+
+void Pipeline::add_postprocessor_owned(PostProcessor *pp)
+{
+       add_postprocessor(pp, false);
+}
+
+void Pipeline::add_postprocessor(PostProcessor *pp, bool keep)
+{
+       postproc.push_back(pp);
+       if(keep)
+               postproc.back().keep();
+       try
+       {
+               create_targets(0);
+       }
+       catch(...)
+       {
+               postproc.pop_back();
+               throw;
+       }
 }
 
-void Pipeline::setup_frame() const
+void Pipeline::setup_frame(Renderer &renderer)
 {
-       in_frame = true;
+       for(PassList::const_iterator i=passes.begin(); i!=passes.end(); ++i)
+               if(Renderable *renderable = i->get_renderable())
+                       renderable->setup_frame(renderer);
        for(vector<Slot>::const_iterator i=renderables.begin(); i!=renderables.end(); ++i)
-               i->renderable->setup_frame();
+               i->renderable->setup_frame(renderer);
 }
 
-void Pipeline::finish_frame() const
+void Pipeline::finish_frame()
 {
-       in_frame = false;
+       for(PassList::const_iterator i=passes.begin(); i!=passes.end(); ++i)
+               if(Renderable *renderable = i->get_renderable())
+                       renderable->finish_frame();
        for(vector<Slot>::const_iterator i=renderables.begin(); i!=renderables.end(); ++i)
                i->renderable->finish_frame();
 }
 
-void Pipeline::render(const Tag &tag) const
+void Pipeline::render()
 {
-       if(tag.id)
-               return;
-
        Renderer renderer(camera);
-       render(renderer, tag);
+       setup_frame(renderer);
+       render(renderer);
+       finish_frame();
 }
 
 void Pipeline::render(Renderer &renderer, const Tag &tag) const
@@ -127,23 +196,36 @@ 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();
+       // These are no-ops but will ensure the related state gets restored
+       BindRestore restore_fbo(out_fbo);
+       BindRestore restore_depth_test(DepthTest::current());
+       BindRestore restore_blend(Blend::current());
 
        if(target[0])
        {
-               Framebuffer &fbo = (samples ? target_ms->fbo : target[0]->fbo);
-               // XXX exception safety
+               Framebuffer &fbo = (samples ? target_ms : target[0])->get_framebuffer();
                fbo.bind();
                fbo.clear(COLOR_BUFFER_BIT|DEPTH_BUFFER_BIT);
        }
 
        for(PassList::const_iterator i=passes.begin(); i!=passes.end(); ++i)
        {
-               Bind bind_depth_test(i->get_depth_test());
-               Bind bind_blend(i->get_blend());
-               Bind bind_lighting(i->get_lighting());
+               if(const DepthTest *dt = i->get_depth_test())
+                       dt->bind();
+               else
+                       DepthTest::unbind();
+
+               if(const Blend *b = i->get_blend())
+                       b->bind();
+               else
+                       Blend::unbind();
+
+               renderer.set_lighting(i->get_lighting());
+               renderer.set_clipping(i->get_clipping());
+
+               if(const Renderable *renderable = i->get_renderable())
+                       renderer.render(*renderable, i->get_tag());
 
                for(vector<Slot>::const_iterator j=renderables.begin(); j!=renderables.end(); ++j)
                        if(j->passes.empty() || j->passes.count(i->get_tag()))
@@ -152,54 +234,63 @@ void Pipeline::render(Renderer &renderer, const Tag &tag) const
 
        if(target[0])
        {
+               DepthTest::unbind();
+               Blend::unbind();
+
                if(samples)
-                       target[0]->fbo.blit_from(target_ms->fbo, COLOR_BUFFER_BIT|DEPTH_BUFFER_BIT, false);
+                       target[0]->blit_from(*target_ms);
 
                for(unsigned i=0; i<postproc.size(); ++i)
                {
                        unsigned j = i%2;
                        if(i+1<postproc.size())
-                               target[1-j]->fbo.bind();
+                               target[1-j]->get_framebuffer().bind();
                        else
-                               Framebuffer::unbind();
-                       postproc[i]->render(target[j]->color, target[j]->depth);
+                               out_fbo->bind();
+                       const Texture2D &color = target[j]->get_target_texture(RENDER_COLOR);
+                       const Texture2D &depth = target[j]->get_target_texture(RENDER_DEPTH);
+                       postproc[i]->render(renderer, color, depth);
                }
-
-               Framebuffer::unbind();
        }
-
-       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);
+       PixelFormat color_pf = (hdr ? RGB16F : RGB);
+       RenderTargetFormat fmt = (RENDER_COLOR,color_pf, RENDER_DEPTH);
+       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);
+               target_ms = new RenderTarget(width, height, samples, fmt);
 }
 
 
-Pipeline::Pass::Pass(const Tag &t):
+Pipeline::Pass::Pass(const Tag &t, Renderable *r):
        tag(t),
        lighting(0),
        depth_test(0),
-       blend(0)
+       blend(0),
+       clipping(0),
+       renderable(r)
 { }
 
 void Pipeline::Pass::set_lighting(const Lighting *l)
@@ -217,36 +308,15 @@ void Pipeline::Pass::set_blend(const Blend *b)
        blend = b;
 }
 
-
-Pipeline::Slot::Slot(const Renderable *r):
-       renderable(r)
-{ }
-
-
-Pipeline::RenderTarget::RenderTarget(unsigned w, unsigned h, PixelFormat f)
+void Pipeline::Pass::set_clipping(const Clipping *c)
 {
-       color.set_min_filter(NEAREST);
-       color.set_mag_filter(NEAREST);
-       color.set_wrap(CLAMP_TO_EDGE);
-       color.storage(f, w, h);
-       fbo.attach(COLOR_ATTACHMENT0, color, 0);
-
-       depth.set_min_filter(NEAREST);
-       depth.set_mag_filter(NEAREST);
-       depth.set_wrap(CLAMP_TO_EDGE);
-       depth.storage(DEPTH_COMPONENT, w, h);
-       fbo.attach(DEPTH_ATTACHMENT, depth, 0);
+       clipping =c;
 }
 
 
-Pipeline::MultisampleTarget::MultisampleTarget(unsigned w, unsigned h, unsigned s, PixelFormat f)
-{
-       color.storage_multisample(s, f, w, h);
-       fbo.attach(COLOR_ATTACHMENT0, color);
-
-       depth.storage_multisample(s, DEPTH_COMPONENT, w, h);
-       fbo.attach(DEPTH_ATTACHMENT, depth);
-}
+Pipeline::Slot::Slot(Renderable *r):
+       renderable(r)
+{ }
 
 } // namespace GL
 } // namespace Msp