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#ifndef render_h
#define render_h
#include "rect.h"
struct Map;
typedef struct {
unsigned char r, g, b, a;
} Colour;
Colour make_colour(unsigned rgb, unsigned char a);
Colour make_red(void);
Colour make_green(void);
Colour make_blue(void);
Colour make_cyan(void);
Colour make_pink(void);
Colour make_yellow(void);
Colour make_aliceblue(void);
Colour blend(Colour dst, Colour src);
Colour blend_mod(Colour dst, Colour src, Colour mod);
Colour col_mul(Colour a, Colour b);
typedef struct {
Colour* p;
int w, h;
} Bitmap;
typedef struct Texture {
int w, h;
} Texture;
typedef struct {
unsigned short p, n, t;
} Mesh_Vert;
typedef struct Mesh {
int vc, pc, nc, tc;
int* p, * n, * t;
Mesh_Vert* verts;
} Mesh;
typedef struct Renderer {
Colour* t;
int* d;
int asp, n;
int vp[2];
int clip[4];
} Renderer;
int tri_os(
const Renderer* r,
const int* v0,
const int* v1,
const int* v2
);
int point_os(
const Renderer* r,
int x,
int y
);
Colour sample_tex(const Texture* t, int u, int v);
void ren_begin(Renderer* r, Colour* t, int* d, int w, int h);
void ren_end(Renderer* r);
void ren_clear(Renderer* r);
void ren_clearc(Renderer* r, Colour c);
void ren_cleard(Renderer* r, int depth);
void ren_clip(Renderer* r, const Rect* c);
void ren_point(Renderer* r, Colour c, int x, int y);
void ren_rect(Renderer* r, Colour c, const Rect*);
void ren_char(
Renderer* r,
Colour c,
int x,
int y,
char ch
);
void ren_chars(
Renderer* r,
Colour c,
int x,
int y,
char ch
);
void ren_text(
Renderer* r,
Colour c,
int x,
int y,
const char* t
);
void ren_texts(
Renderer* r,
Colour c,
int x,
int y,
const char* t
);
void ren_line(
Renderer* r,
Colour c,
const int* s,
const int* e
);
/* Vertex format:
* x y z u v r g b
* All fixed point values with 9 bits of precision.
*/
void ren_tri(
Renderer* r,
const int* v0,
const int* v1,
const int* v2,
const Texture* tex
); /* Unsafe for 3D. Clips against the r->clip */
void ren_tri3(
Renderer* r,
const int* v0,
const int* v1,
const int* v2,
const Texture* tex
); /* Does perspective calculation and clips against the near. */
void ren_mesh(
Renderer* r,
const Mesh* mesh,
const Texture* tex
);
void ren_map(
Renderer* r,
const struct Map* map,
const int* pos,
const int* dir,
const int* left
);
#endif
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