draw_buffers.h

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

#define TEXTURE_COMPONENTS_RGB      0
#define TEXTURE_COMPONENTS_RGBA     1

#define TEXTURE_FUNCTION_MODULATE   0
#define TEXTURE_FUNCTION_DECAL      1
#define TEXTURE_FUNCTION_HIGHLIGHT  2
#define TEXTURE_FUNCTION_HIGHLIGHT2 3

#define CLUT_STORAGE_MODE1          0
#define CLUT_STORAGE_MODE2          1

#define CLUT_NO_LOAD                0
#define CLUT_LOAD                   1
#define CLUT_LOAD_COPY_CBP0         2
#define CLUT_LOAD_COPY_CBP1         3
#define CLUT_COMPARE_CBP0           4
#define CLUT_COMPARE_CBP1           5
 
typedef struct {
    unsigned char width;
    unsigned char height;
    unsigned char components;
    unsigned char function;
} texinfo_t;
 
typedef struct {
    unsigned int address;
    unsigned int width;
    unsigned int height;
    unsigned int psm;
    unsigned int mask;
} framebuffer_t;
 
typedef struct {
    unsigned int enable;
    unsigned int method;
    unsigned int address;
    unsigned int zsm;
    unsigned int mask;
} zbuffer_t;
 
typedef struct {
    unsigned int address;
    unsigned int width;
    unsigned int psm;
    texinfo_t info;
} texbuffer_t;
 
typedef struct {
    unsigned int address;
    unsigned int psm;
    unsigned int storage_mode;
    unsigned int start;
    unsigned int load_method;
} clutbuffer_t;
 
#ifdef __cplusplus
extern "C" {
#endif

extern unsigned char draw_log2(unsigned int x);

extern qword_t *draw_framebuffer(qword_t *q, int context, framebuffer_t *frame);

extern qword_t *draw_zbuffer(qword_t *q, int context, zbuffer_t *zbuffer);

extern qword_t *draw_texturebuffer(qword_t *q, int context, texbuffer_t *texbuffer, clutbuffer_t *clut);

extern qword_t *draw_clutbuffer(qword_t *q, int context, int psm, clutbuffer_t *clut);

extern qword_t *draw_clut_offset(qword_t *q, int cbw, int u, int v);
 
#ifdef __cplusplus
}
#endif
 
#endif /* __DRAW_BUFFERS_H__ */