ppsspp/GPU/GLES/IndexGenerator.h

// Copyright (c) 2012- PPSSPP Project.

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0 or later versions.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License 2.0 for more details.

// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/

// Official git repository and contact information can be found at
// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.


#pragma once

#include "CommonTypes.h"
#include "../ge_constants.h"

class IndexGenerator
{
public:
	void Reset();
	void Start(u16 *indexptr, int baseIndex, int prim);
	bool PrimCompatible(int prim);

	// Triangles
	void AddList(int numVerts);
	void AddStrip(int numVerts);
	void AddFan(int numVerts);
	// Lines
	void AddLineList(int numVerts);
	void AddLineStrip(int numVerts);

	// Translates already indexed lists
	void TranslateLineList(int numVerts, const u8 *inds, int offset);
	void TranslateLineStrip(int numVerts, const u8 *inds, int offset);
	void TranslateLineList(int numVerts, const u16 *inds, int offset);
	void TranslateLineStrip(int numVerts, const u16 *inds, int offset);

	void TranslateList(int numVerts, const u8 *inds, int offset);
	void TranslateStrip(int numVerts, const u8 *inds, int offset);
	void TranslateFan(int numVerts, const u8 *inds, int offset);
	void TranslateList(int numVerts, const u16 *inds, int offset);
	void TranslateStrip(int numVerts, const u16 *inds, int offset);
	void TranslateFan(int numVerts, const u16 *inds, int offset);

private:
	u16 *inds_;
	int index_;
	int prim_;
};