6 #include <msp/datafile/objectloader.h>
10 #include "vertexarray.h"
11 #include "vertexsetup.h"
20 Stores mesh data using a VertexArray and one or more Batches.
22 Meshes can be created at runtime using the MeshBuilder class.
24 The Object class provides a higher-level interface which associates a Mesh with
25 a Technique and is usually the appropriate way to of rendering geometry.
27 class Mesh: public Resource
29 friend class MeshBuilder;
32 class Loader: public DataFile::ObjectLoader<Mesh>
38 Loader(Mesh &, bool = true);
40 void storage(const std::vector<VertexAttribute> &);
42 void vertices_with_format(const std::vector<VertexAttribute> &);
43 void batch(PrimitiveType);
47 class AsyncLoader: public Resource::AsyncLoader
52 Bufferable::AsyncUpdater *vertex_updater;
53 Bufferable::AsyncUpdater *index_updater;
57 AsyncLoader(Mesh &, IO::Seekable &);
60 virtual bool needs_sync() const;
61 virtual bool process();
71 std::vector<Batch> batches;
74 VertexSetup vtx_setup;
75 mutable unsigned short dirty = 0;
76 bool disallow_rendering = false;
77 FaceWinding face_winding = NON_MANIFOLD;
78 std::string debug_name;
82 Mesh(const VertexFormat &);
85 /** Sets the vertex format for the mesh. It cannot be changed once set. */
86 void storage(const VertexFormat &);
88 /** Clears all vertices and batches. Vertex format is retained. */
91 void check_buffers(unsigned);
94 const VertexArray &get_vertices() const { return vertices; }
95 const VertexSetup &get_vertex_setup() const { return vtx_setup; }
96 const Buffer *get_index_buffer() const { return ibuf; }
97 std::size_t get_n_vertices() const;
99 /** Returns a pointer to a vertex. Offsets of individual attributes can be
100 queried from VertexFormat. */
101 char *modify_vertex(std::size_t);
103 /** Adds a batch to the mesh. It may be combined with the last existing
104 batch if the primitive types are compatible. */
105 void add_batch(const Batch &b);
107 const std::vector<Batch> &get_batches() const { return batches; }
109 void set_winding(FaceWinding);
111 void draw(Renderer &) const;
113 /** Draws multiple instances of the mesh. The supplied VertexSetup must use
114 the mesh's vertex array. */
115 void draw_instanced(Renderer &, const VertexSetup &, unsigned) const;
118 void draw(Renderer &, const VertexSetup *, unsigned) const;
119 void resize_buffers() const;
122 virtual int get_load_priority() const { return 1; }
123 virtual Resource::AsyncLoader *load(IO::Seekable &, const Resources * = 0);
124 virtual std::uint64_t get_data_size() const;
125 virtual void unload();
127 void set_debug_name(const std::string &);