X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Foccludedscene.h;fp=source%2Foccludedscene.h;h=3f8ca76ce4dcbfe40dc3edaa5553f92785640acb;hb=b160f64ab6da260bad06a4e5f5bfed243e2cdc24;hp=0000000000000000000000000000000000000000;hpb=3e6a7f8ae2ba43728d16954ac7c31257b7bfb581;p=libs%2Fgl.git

diff --git a/source/occludedscene.h b/source/occludedscene.h
new file mode 100644
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+++ b/source/occludedscene.h
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+#ifndef MSP_GL_OCCLUDEDSCENE_H_
+#define MSP_GL_OCCLUDEDSCENE_H_
+
+#include <set>
+#include <vector>
+#include "mesh.h"
+#include "program.h"
+#include "scene.h"
+
+namespace Msp {
+namespace GL {
+
+/**
+A scene that performs occlusion queries on renderables to skip those that are
+entirely occluded by others.
+*/
+class OccludedScene: public Scene
+{
+private:
+	struct OccludedRenderable
+	{
+		const Renderable *renderable;
+		const Geometry::BoundingSphere<float, 3> *bounding_sphere;
+		bool in_frustum;
+		bool occluder;
+		unsigned query;
+
+		OccludedRenderable();
+	};
+
+	typedef std::set<const Renderable *> RenderableSet;
+	typedef std::vector<OccludedRenderable> OccludedArray;
+
+	Mesh bounding_mesh;
+	Program bounding_shader;
+	RenderableSet renderables;
+	float occluder_min_size;
+	mutable OccludedArray occluded_cache;
+	mutable bool cache_dirty;
+
+public:
+	OccludedScene();
+	~OccludedScene();
+
+	virtual void add(const Renderable &);
+	virtual void remove(const Renderable &);
+
+	virtual void render(Renderer &, const Tag &) const;
+};
+
+} // namespace GL
+} // namespace Msp
+
+#endif