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typedef struct Polygon Polygon;
typedef struct Tilerparam Tilerparam;
typedef struct Rasterparam Rasterparam;
typedef struct Rastertask Rastertask;
struct Polygon
{
Vertex *v;
ulong n;
ulong cap;
};
struct Tilerparam
{
int id;
Channel *paramsc;
Channel **taskchans; /* Channel*[nproc] */
Rectangle *wr; /* Rectangle[nproc] */
ulong nproc;
};
struct Rasterparam
{
int id;
Channel *taskc;
};
struct Rastertask
{
SUparams *params;
Rectangle wr; /* working rect */
Primitive p;
};
/* alloc */
void *emalloc(ulong);
void *erealloc(void*, ulong);
Memimage *eallocmemimage(Rectangle, ulong);
/* fb */
Raster *allocraster(char*, Rectangle, ulong);
void clearraster(Raster*, ulong);
void fclearraster(Raster*, float);
uchar *rasterbyteaddr(Raster*, Point);
void rasterput(Raster*, Point, void*);
void rasterget(Raster*, Point, void*);
void rasterputcolor(Raster*, Point, ulong);
ulong rastergetcolor(Raster*, Point);
void rasterputfloat(Raster*, Point, float);
float rastergetfloat(Raster*, Point);
void freeraster(Raster*);
Framebuf *mkfb(Rectangle);
void rmfb(Framebuf*);
Framebufctl *mkfbctl(Rectangle);
void rmfbctl(Framebufctl*);
/* vertex */
Vertex dupvertex(Vertex*);
void lerpvertex(Vertex*, Vertex*, Vertex*, double);
void berpvertex(Vertex*, Vertex*, Vertex*, Vertex*, Point3);
void delvattrs(Vertex*);
void fprintvattrs(int, Vertex*);
/* clip */
int clipprimitive(Primitive*, Primitive*);
int rectclipline(Rectangle, Point*, Point*, Vertex*, Vertex*);
/* util */
void memsetf(void*, float, usize);
void memsetl(void*, ulong, usize);
/* nanosec */
uvlong nanosec(void);
#define getpixel(fb, p) rastergetcolor(fb, p)
#define putpixel(fb, p, c) rasterputcolor(fb, p, c)
#define getdepth(fb, p) rastergetfloat(fb, p)
#define putdepth(fb, p, z) rasterputfloat(fb, p, z)
/* void SWAP(type t, type *a, type *b) */
#define SWAP(t, a, b) {t tmp; tmp = *(a); *(a) = *(b); *(b) = tmp;}
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