draw_sampling.h

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#ifndef __DRAW_SAMPLING_H__
#define __DRAW_SAMPLING_H__
 
#include <tamtypes.h>

#define LOD_FORMULAIC               0
#define LOD_USE_K                   1

#define LOD_MAG_NEAREST             0
#define LOD_MAG_LINEAR              1
#define LOD_MIN_NEAREST             0
#define LOD_MIN_LINEAR              1
#define LOD_MIN_NEAR_MIPMAP_NEAR    2
#define LOD_MIN_NEAR_MIPMAP_LINE    3
#define LOD_MIN_LINE_MIPMAP_NEAR    4
#define LOD_MIN_LINE_MIPMAP_LINE    5

#define LOD_MIPMAP_REGISTER         0
#define LOD_MIPMAP_CALCULATE        1

#define WRAP_REPEAT                 0
#define WRAP_CLAMP                  1
#define WRAP_REGION_CLAMP           2
#define WRAP_REGION_REPEAT          3

#define ALPHA_EXPAND_NORMAL         0
#define ALPHA_EXPAND_TRANSPARENT    1
 
typedef struct {
    unsigned char calculation;
    unsigned char max_level;
    unsigned char mag_filter;
    unsigned char min_filter;
    unsigned char mipmap_select;
    unsigned char l;
    float k;
} lod_t;
 
typedef struct {
    int address1;
    int address2;
    int address3;
    char width1;
    char width2;
    char width3;
} mipmap_t;
 
typedef struct {
    unsigned char horizontal;
    unsigned char vertical;
    int minu, maxu;
    int minv, maxv;
} texwrap_t;
 
#ifdef __cplusplus
extern "C" {
#endif

extern qword_t *draw_texture_sampling(qword_t *q, int context, lod_t *lod);

extern qword_t *draw_mipmap1(qword_t *q, int context, mipmap_t *mipmap);

extern qword_t *draw_mipmap2(qword_t *q, int context, mipmap_t *mipmap);

extern qword_t *draw_texture_wrapping(qword_t *q, int context, texwrap_t *wrap);

extern qword_t *draw_texture_expand_alpha(qword_t *q, unsigned char zero_value, int expand, unsigned char one_value);
 
#ifdef __cplusplus
}
#endif
 
#endif /* __DRAW_SAMPLING_H__ */