ref: 6eab9793d68feb3282714083b355d38c6c36400b
dir: /internal.h/
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 */
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 */
int min(int, int);
int max(int, int);
void memsetf(void*, float, usize);
void memsetl(void*, ulong, usize);
/* nanosec */
uvlong nanosec(void);
/* ulong getpixel(Framebuf *fb, Point p) */
#define getpixel(fb, p) (((fb)->cb)[Dx((fb)->r)*(p).y + (p).x])
/* void putpixel(Framebuf *fb, Point p, ulong c) */
#define putpixel(fb, p, c) (((fb)->cb)[Dx((fb)->r)*(p).y + (p).x] = (c))
/* void SWAP(type t, type *a, type *b) */
#define SWAP(t, a, b) {t tmp; tmp = *(a); *(a) = *(b); *(b) = tmp;}