Make it possible to specify explicit clear values

[libs/gl.git] / source / render / sequence.cpp

diff --git a/source/render/sequence.cpp b/source/render/sequence.cpp
index 3460bc724c30905a05759a3f51046bac720eb306..7a964c870d39e2bbe40a9cbf4a2571d1e1f40843 100644 (file)
--- a/source/render/sequence.cpp
+++ b/source/render/sequence.cpp
@@ -7,62 +7,74 @@
 #include "renderer.h"
 #include "sequence.h"
 #include "texture2d.h"
-#include "view.h"
 
 using namespace std;
 
 namespace Msp {
 namespace GL {
 
-Sequence::Sequence(unsigned w, unsigned h, const FrameFormat &f)
+Sequence::Sequence():
+       width(0),
+       height(0),
+       target{0, 0},
+       target_ms(0),
+       clear_enabled(false),
+       clear_depth(1.0f),
+       clear_stencil(0)
+{ }
+
+Sequence::Sequence(unsigned w, unsigned h, const FrameFormat &f):
+       width(w),
+       height(h),
+       target_format(f),
+       target_ms(0),
+       clear_enabled(false),
+       clear_depth(1.0f),
+       clear_stencil(0)
 {
-       init(w, h, f);
+       if(target_format.empty())
+               throw invalid_argument("Sequence::Sequence");
+
+       FrameFormat postproc_fmt = target_format;
+       postproc_fmt.set_samples(1);
+       target[0] = new RenderTarget(width, height, postproc_fmt);
+       target[1] = new RenderTarget(width, height, postproc_fmt);
+
+       if(target_format.get_samples()>1)
+               target_ms = new RenderTarget(width, height, target_format);
 }
 
-Sequence::Sequence(const View &view, const FrameFormat &f)
+Sequence::~Sequence()
 {
-       init(view.get_width(), view.get_height(), f);
+       for(PostProcStep &p: postproc)
+               if(p.owned)
+                       delete p.postproc;
+       delete target[0];
+       delete target[1];
+       delete target_ms;
 }
 
-Sequence::Sequence(const Framebuffer &fbo, const FrameFormat &f)
+void Sequence::set_clear_enabled(bool c)
 {
-       init(fbo.get_width(), fbo.get_height(), f);
+       clear_enabled = c;
 }
 
-void Sequence::init(unsigned w, unsigned h, const FrameFormat &f)
+void Sequence::set_clear_colors(const vector<Color> &c)
 {
-       width = w;
-       height = h;
-       target_format = f;
+       clear_enabled = true;
+       clear_colors = c;
+}
 
-       if(!target_format.empty())
-       {
-               FrameFormat postproc_fmt = target_format;
-               postproc_fmt.set_samples(1);
-               target[0] = new RenderTarget(width, height, postproc_fmt);
-               target[1] = new RenderTarget(width, height, postproc_fmt);
-
-               if(target_format.get_samples()>1)
-                       target_ms = new RenderTarget(width, height, target_format);
-               else
-                       target_ms = 0;
-       }
-       else
-       {
-               target_ms = 0;
-               target[0] = 0;
-               target[1] = 0;
-       }
+void Sequence::set_clear_depth(float d)
+{
+       clear_enabled = true;
+       clear_depth = d;
 }
 
-Sequence::~Sequence()
+void Sequence::set_clear_stencil(int s)
 {
-       for(vector<PostProcStep>::iterator i=postproc.begin(); i!=postproc.end(); ++i)
-               if(i->owned)
-                       delete i->postproc;
-       delete target[0];
-       delete target[1];
-       delete target_ms;
+       clear_enabled = true;
+       clear_stencil = s;
 }
 
 Sequence::Step &Sequence::add_step(Tag tag, Renderable &r)
@@ -94,15 +106,15 @@ void Sequence::add_postprocessor(PostProcessor *pp, bool owned)
 
 void Sequence::setup_frame(Renderer &renderer)
 {
-       for(vector<Step>::const_iterator i=steps.begin(); i!=steps.end(); ++i)
-               if(Renderable *renderable = i->get_renderable())
+       for(const Step &s: steps)
+               if(Renderable *renderable = s.get_renderable())
                        renderable->setup_frame(renderer);
 }
 
 void Sequence::finish_frame()
 {
-       for(vector<Step>::const_iterator i=steps.begin(); i!=steps.end(); ++i)
-               if(Renderable *renderable = i->get_renderable())
+       for(const Step &s: steps)
+               if(Renderable *renderable = s.get_renderable())
                        renderable->finish_frame();
 }
 
@@ -116,25 +128,47 @@ void Sequence::render(Renderer &renderer, Tag tag) const
        const Framebuffer *out_fbo = renderer.get_framebuffer();
 
        if(target[0])
-       {
                renderer.set_framebuffer(&(target_ms ? target_ms : target[0])->get_framebuffer());
-               renderer.clear();
+
+       if(clear_enabled)
+       {
+               const Framebuffer *target_fbo = renderer.get_framebuffer();
+               if(!target_fbo)
+                       throw invalid_operation("Sequence::render");
+
+               const FrameFormat &format = target_fbo->get_format();
+               ClearValue clear_values[7];
+               unsigned i = 0;
+               Color default_color = (clear_colors.empty() ? Color(0.0f, 0.0f, 0.0f, 0.0f) : clear_colors.front());
+               ClearValue *cv = clear_values;
+               for(FrameAttachment a: format)
+               {
+                       if(get_attach_point(a)==get_attach_point(DEPTH_ATTACHMENT))
+                               cv->depth_stencil.depth = clear_depth;
+                       else if(get_attach_point(a)==get_attach_point(STENCIL_ATTACHMENT))
+                               cv->depth_stencil.stencil = clear_stencil;
+                       else
+                               cv->color = (i<clear_colors.size() ? clear_colors[i++] : default_color);
+                       ++cv;
+               }
+
+               renderer.clear(clear_values);
        }
 
-       for(vector<Step>::const_iterator i=steps.begin(); i!=steps.end(); ++i)
+       for(const Step &s: steps)
        {
                Renderer::Push _push2(renderer);
 
-               renderer.set_depth_test(&i->get_depth_test());
-               renderer.set_stencil_test(&i->get_stencil_test());
-               renderer.set_blend(&i->get_blend());
+               renderer.set_depth_test(&s.get_depth_test());
+               renderer.set_stencil_test(&s.get_stencil_test());
+               renderer.set_blend(&s.get_blend());
 
-               if (const Lighting *lighting = i->get_lighting())
+               if (const Lighting *lighting = s.get_lighting())
                        renderer.add_shader_data(lighting->get_shader_data());
-               renderer.set_clipping(i->get_clipping());
+               renderer.set_clipping(s.get_clipping());
 
-               if(const Renderable *renderable = i->get_renderable())
-                       renderer.render(*renderable, i->get_tag());
+               if(const Renderable *renderable = s.get_renderable())
+                       renderer.render(*renderable, s.get_tag());
        }
 
        if(target[0])