Textures.h

#ifndef TEXTURES_H
#define TEXTURES_H
#include <GL/glew.h>
//#include <gl/gl.h>
#include "convert.h"

enum FILTERS
{
    None,
    SaI,
    xBRZ,
};

struct CachedTexture
{
    GLuint glName;
    u32 address;
    u32 crc;
    //	float	fulS, fulT;
    //	WORD	ulS, ulT, lrS, lrT;
    float offsetS, offsetT;
    u32 maskS, maskT;
    u32 clampS, clampT;
    u32 mirrorS, mirrorT;
    u32 line;
    u32 size;
    u32 format;
    u32 tMem;
    u32 palette;
    u32 width, height; // N64 width and height
    u32 clampWidth, clampHeight; // Size to clamp to
    u32 realWidth, realHeight; // Actual texture size
    f32 scaleS, scaleT; // Scale to map to 0.0-1.0
    f32 shiftScaleS, shiftScaleT; // Scale to shift
    u32 textureBytes;

    CachedTexture *lower, *higher;
    u32 lastDList;

    u32 frameBufferTexture;
};


struct TextureCache
{
    CachedTexture *bottom, *top;

    CachedTexture* (current[2]);
    u32 maxBytes;
    u32 cachedBytes;
    u32 numCached;
    u32 hits, misses;
    GLuint glNoiseNames[32];
    //GLuint			glDummyName;
    CachedTexture* dummy;
    u32 textureFilter, bitDepth;
};

extern TextureCache cache;

inline u32 pow2(u32 dim)
{
    u32 i = 1;

    while (i < dim) i <<= 1;

    return i;
}

inline u32 powof(u32 dim)
{
    u32 num = 1;
    u32 i = 0;

    while (num < dim)
    {
        num <<= 1;
        i++;
    }

    return i;
}

CachedTexture* TextureCache_AddTop();
void TextureCache_MoveToTop(CachedTexture* newtop);
void TextureCache_Remove(CachedTexture* texture);
void TextureCache_RemoveBottom();
void TextureCache_Init();
void TextureCache_Destroy();
void TextureCache_Update(u32 t);
void TextureCache_ActivateTexture(u32 t, CachedTexture* texture);
void TextureCache_ActivateNoise(u32 t);
void TextureCache_ActivateDummy(u32 t);
BOOL TextureCache_Verify();

#endif