Merge branch 'master' of https://github.com/minetest/minetest

1 files changed, 59 insertions, 20 deletions

diff --git a/src/client/clientmap.h b/src/client/clientmap.h
index 97ce8d355..6d57f1911 100644
--- a/src/client/clientmap.h
+++ b/src/client/clientmap.h
@@ -56,6 +56,7 @@ struct MeshBufListList
 
 class Client;
 class ITextureSource;
+class PartialMeshBuffer;
 
 /*
 	ClientMap
@@ -75,45 +76,37 @@ public:
 
 	virtual ~ClientMap() = default;
 
-	s32 mapType() const
+	bool maySaveBlocks() override
 	{
-		return MAPTYPE_CLIENT;
+		return false;
 	}
 
-	void drop()
+	void drop() override
 	{
-		ISceneNode::drop();
+		ISceneNode::drop(); // calls destructor
 	}
 
-	void updateCamera(const v3f &pos, const v3f &dir, f32 fov, const v3s16 &offset)
-	{
-		m_camera_position = pos;
-		m_camera_direction = dir;
-		m_camera_fov = fov;
-		m_camera_offset = offset;
-	}
+	void updateCamera(v3f pos, v3f dir, f32 fov, v3s16 offset);
 
 	/*
 		Forcefully get a sector from somewhere
 	*/
-	MapSector * emergeSector(v2s16 p);
-
-	//void deSerializeSector(v2s16 p2d, std::istream &is);
+	MapSector * emergeSector(v2s16 p) override;
 
 	/*
 		ISceneNode methods
 	*/
 
-	virtual void OnRegisterSceneNode();
+	virtual void OnRegisterSceneNode() override;
 
-	virtual void render()
+	virtual void render() override
 	{
 		video::IVideoDriver* driver = SceneManager->getVideoDriver();
 		driver->setTransform(video::ETS_WORLD, AbsoluteTransformation);
 		renderMap(driver, SceneManager->getSceneNodeRenderPass());
 	}
 
-	virtual const aabb3f &getBoundingBox() const
+	virtual const aabb3f &getBoundingBox() const override
 	{
 		return m_box;
 	}
@@ -121,7 +114,9 @@ public:
 	void getBlocksInViewRange(v3s16 cam_pos_nodes,
 		v3s16 *p_blocks_min, v3s16 *p_blocks_max, float range=-1.0f);
 	void updateDrawList();
-	void updateDrawListShadow(const v3f &shadow_light_pos, const v3f &shadow_light_dir, float shadow_range);
+	void updateDrawListShadow(v3f shadow_light_pos, v3f shadow_light_dir, float radius, float length);
+	// Returns true if draw list needs updating before drawing the next frame.
+	bool needsUpdateDrawList() { return m_needs_update_drawlist; }
 	void renderMap(video::IVideoDriver* driver, s32 pass);
 
 	void renderMapShadows(video::IVideoDriver *driver,
@@ -133,13 +128,54 @@ public:
 	void renderPostFx(CameraMode cam_mode);
 
 	// For debug printing
-	virtual void PrintInfo(std::ostream &out);
+	void PrintInfo(std::ostream &out) override;
 
 	const MapDrawControl & getControl() const { return m_control; }
 	f32 getWantedRange() const { return m_control.wanted_range; }
 	f32 getCameraFov() const { return m_camera_fov; }
 
 private:
+
+	// update the vertex order in transparent mesh buffers
+	void updateTransparentMeshBuffers();
+
+	// Orders blocks by distance to the camera
+	class MapBlockComparer
+	{
+	public:
+		MapBlockComparer(const v3s16 &camera_block) : m_camera_block(camera_block) {}
+
+		bool operator() (const v3s16 &left, const v3s16 &right) const
+		{
+			auto distance_left = left.getDistanceFromSQ(m_camera_block);
+			auto distance_right = right.getDistanceFromSQ(m_camera_block);
+			return distance_left > distance_right || (distance_left == distance_right && left > right);
+		}
+
+	private:
+		v3s16 m_camera_block;
+	};
+
+
+	// reference to a mesh buffer used when rendering the map.
+	struct DrawDescriptor {
+		v3s16 m_pos;
+		union {
+			scene::IMeshBuffer *m_buffer;
+			const PartialMeshBuffer *m_partial_buffer;
+		};
+		bool m_reuse_material:1;
+		bool m_use_partial_buffer:1;
+
+		DrawDescriptor(v3s16 pos, scene::IMeshBuffer *buffer, bool reuse_material) :
+			m_pos(pos), m_buffer(buffer), m_reuse_material(reuse_material), m_use_partial_buffer(false)
+		{}
+
+		DrawDescriptor(v3s16 pos, const PartialMeshBuffer *buffer) :
+			m_pos(pos), m_partial_buffer(buffer), m_reuse_material(false), m_use_partial_buffer(true)
+		{}
+	};
+
 	Client *m_client;
 	RenderingEngine *m_rendering_engine;
 
@@ -152,9 +188,11 @@ private:
 	v3f m_camera_direction = v3f(0,0,1);
 	f32 m_camera_fov = M_PI;
 	v3s16 m_camera_offset;
+	bool m_needs_update_transparent_meshes = true;
 
-	std::map<v3s16, MapBlock*> m_drawlist;
+	std::map<v3s16, MapBlock*, MapBlockComparer> m_drawlist;
 	std::map<v3s16, MapBlock*> m_drawlist_shadow;
+	bool m_needs_update_drawlist;
 
 	std::set<v2s16> m_last_drawn_sectors;
 
@@ -162,4 +200,5 @@ private:
 	bool m_cache_bilinear_filter;
 	bool m_cache_anistropic_filter;
 	bool m_added_to_shadow_renderer{false};
+	u16 m_cache_transparency_sorting_distance;
 };