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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#ifndef _SMF_GROUND_TEXTURES_H_
#define _SMF_GROUND_TEXTURES_H_
#include <vector>
#include "Map/BaseGroundTextures.h"
#include "Rendering/GL/PBO.h"
class CSMFMapFile;
class CSMFReadMap;
class CSMFGroundTextures: public CBaseGroundTextures
{
public:
CSMFGroundTextures(CSMFReadMap* rm);
~CSMFGroundTextures();
void DrawUpdate() override;
void DrawUpdateSquare(int texSquareX, int texSquareY) override;
bool SetSquareLuaTexture(int texSquareX, int texSquareY, int texID) override;
bool GetSquareLuaTexture(int texSquareX, int texSquareY, int texID, int texSizeX, int texSizeY, int texMipLevel) override;
void BindSquareTextureArray() const override;
void UnBindSquareTextureArray() const override;
unsigned int GetSquareMipLevel(unsigned int i) const override { return squares[i].GetMipLevel(); }
protected:
void LoadTiles(CSMFMapFile& file);
void LoadSquareTextures(const int minLevel, const int maxLevel);
void ConvolveHeightMap(const int mapWidth, const int mipLevel);
void ExtractSquareTiles(const int texSquareX, const int texSquareY, const int mipLevel, GLint* tileBuf) const;
void LoadSquareTexture(int x, int y, int level);
inline bool TexSquareInView(int, int) const;
CSMFReadMap* smfMap;
private:
struct GroundSquare {
enum {
RAW_TEX_IDX = 0,
LUA_TEX_IDX = 1,
};
GroundSquare(): textureIDs{0, 0}, texMipLevel(0), texDrawFrame(1) {}
~GroundSquare();
bool HasLuaTexture() const { return (textureIDs[LUA_TEX_IDX] != 0); }
void SetRawTexture(unsigned int id) { textureIDs[RAW_TEX_IDX] = id; }
void SetLuaTexture(unsigned int id) { textureIDs[LUA_TEX_IDX] = id; }
void SetMipLevel(unsigned int l) { texMipLevel = l; }
void SetDrawFrame(unsigned int f) { texDrawFrame = f; }
unsigned int* GetTextureIDPtr() { return &textureIDs[RAW_TEX_IDX]; }
unsigned int GetTextureID() const { return textureIDs[HasLuaTexture()]; }
unsigned int GetMipLevel() const { return texMipLevel; }
unsigned int GetDrawFrame() const { return texDrawFrame; }
private:
unsigned int textureIDs[2];
unsigned int texMipLevel;
unsigned int texDrawFrame;
};
// note: intentionally declared static (see ReadMap)
static std::vector<GroundSquare> squares;
static std::vector<int> tileMap;
static std::vector<char> tiles;
// FIXME? these are not updated at runtime
static std::vector<float> heightMaxima;
static std::vector<float> heightMinima;
static std::vector<float> stretchFactors;
// use Pixel Buffer Objects for async. uploading (DMA)
PBO pbo;
unsigned int tileArrayTex = 0;
unsigned int tileTexFormat = 0;
};
#endif // _BF_GROUND_TEXTURES_H_
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