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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#ifndef _FARTEXTURE_HANDLER_H
#define _FARTEXTURE_HANDLER_H
#include <vector>
#include "System/Vec2.h"
#include "GL/myGL.h"
#include "Rendering/GL/FBO.h"
class CSolidObject;
class CVertexArray;
/**
* @brief Cheap unit lodding using imposters.
*/
class CFarTextureHandler
{
public:
CFarTextureHandler();
~CFarTextureHandler();
void Queue(const CSolidObject* obj);
void Draw();
private:
int texSizeX;
int texSizeY;
static const int iconSizeX;
static const int iconSizeY;
static const int numOrientations;
GML_VECTOR<const CSolidObject*> queuedForRender;
std::vector< std::vector<int> > cache;
FBO fbo;
unsigned int farTextureID;
unsigned int usedFarTextures;
bool HaveFarIcon(const CSolidObject* obj) const;
bool CheckResizeAtlas();
float2 GetTextureCoords(const int& farTextureNum, const int& orientation) const;
void DrawFarTexture(const CSolidObject* obj, CVertexArray*);
int2 GetTextureCoordsInt(const int& farTextureNum, const int& orientation) const;
void CreateFarTexture(const CSolidObject* obj);
};
extern CFarTextureHandler* farTextureHandler;
#endif // _FARTEXTURE_HANDLER_H
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