#include <string.h>

#include <stdint.h>

#include "bdat.h"

#include "appio.h"

#include "map.h"

#include "render.h"

struct drawsurf_s *surfs = NULL;

struct drawsurf_s *surfs_p = NULL;

struct drawsurf_s *surfs_end = NULL;

static void

DrawSpan (struct drawspan_s *s, int c)

{

if (video.bpp == 16)

{

unsigned short *dest = (unsigned short *)video.rows[s->v] + s->u;

unsigned short *end = dest + s->len;

while (dest != end)

*dest++ = c;

}

else

{

unsigned int *dest = (unsigned int *)video.rows[s->v] + s->u;

unsigned int *end = dest + s->len;

while (dest != end)

*dest++ = c;

}

}

void

R_Surf_Emit (struct msurface_s *msurf, int firstspanidx, int numspans)

{

if (surfs_p == surfs_end)

return;

surfs_p->firstspanidx = firstspanidx;

surfs_p->numspans = numspans;

surfs_p->msurfidx = msurf - map.surfaces;

//TODO: texturing n' stuff

surfs_p++;

}

void

R_Surf_DrawAll (void)

{

struct drawsurf_s *ds;

for (ds = surfs; ds != surfs_p; ds++)

{

struct drawspan_s *s;

int i;

for (i = 0, s = &r_spans[ds->firstspanidx]; i < ds->numspans; i++, s++)

{

int c = ((uintptr_t)&map.surfaces[ds->msurfidx] >> 4) & 0xffffff;

DrawSpan (s, c);

}

}

}

void

R_Surf_BeginFrame (void *surfbuf, int surfbufsize)

{

unsigned int cnt;

surfs_p = surfs = AlignAllocation (surfbuf, surfbufsize, sizeof(*surfs), &cnt);

surfs_end = surfs + cnt;

}