X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fcore%2Fbatch.h;fp=source%2Fcore%2Fbatch.h;h=2e4ad9ef3005d9d01c15dbdc4d119ce79f570460;hb=7aaec9a70b8d7733429bec043f8e33e02956f266;hp=0000000000000000000000000000000000000000;hpb=bec07999d95b76f4b47cffcc564d0cd0afc0435e;p=libs%2Fgl.git

diff --git a/source/core/batch.h b/source/core/batch.h
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+++ b/source/core/batch.h
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+#ifndef MSP_GL_BATCH_H_
+#define MSP_GL_BATCH_H_
+
+#include <vector>
+#include <msp/datafile/objectloader.h>
+#include "bufferable.h"
+#include "datatype.h"
+#include "primitivetype.h"
+
+namespace Msp {
+namespace GL {
+
+class Buffer;
+
+/**
+Stores primitive type and element indices for a single GL draw call.  Data
+type for indices is automatically chosen to accommodate the largest index in
+the Batch.
+
+This is a pretty low-level class and mainly intended to be used by the Mesh
+class.
+*/
+class Batch: public Bufferable
+{
+public:
+	class Loader: public DataFile::ObjectLoader<Batch>
+	{
+	public:
+		Loader(Batch &);
+	private:
+		void indices(const std::vector<unsigned> &);
+	};
+
+private:
+	PrimitiveType prim_type;
+	DataType index_type;
+	std::vector<UInt8> data;
+	unsigned max_index;
+	bool restart;
+
+	static unsigned restart_index;
+
+public:
+	Batch(PrimitiveType t);
+	~Batch();
+
+	PrimitiveType get_type() const { return prim_type; }
+	void set_index_type(DataType);
+	DataType get_index_type() const { return index_type; }
+
+	DEPRECATED void set_data_type(DataType t) { set_index_type(t); }
+	DEPRECATED DataType get_data_type() const { return index_type; }
+
+	Batch &append(unsigned);
+	Batch &append(const std::vector<unsigned> &);
+	bool can_append(PrimitiveType);
+	Batch &append(const Batch &);
+private:
+	void append_index(unsigned);
+	virtual unsigned get_data_size() const { return data.size(); }
+	virtual const void *get_data_pointer() const { return &data[0]; }
+	virtual unsigned get_alignment() const { return get_index_size(); }
+	unsigned get_index_size() const;
+public:
+	unsigned size() const { return data.size()/get_index_size(); }
+
+	unsigned get_index(unsigned) const;
+
+	void draw() const;
+	void draw_instanced(unsigned) const;
+private:
+	const void *setup_draw() const;
+	static void set_restart_index(unsigned);
+};
+
+} // namespace GL
+} // namespace Msp
+
+#endif