/**
* @sa R_ModLoadSurfaces
*/
void R_CreateSurfaceLightmap (mBspSurface_t * surf)
{
int smax, tmax;
byte *samples, *directions;
if (!(surf->flags & MSURF_LIGHTMAP))
return;
smax = (surf->stextents[0] / surf->lightmap_scale) + 1;
tmax = (surf->stextents[1] / surf->lightmap_scale) + 1;
if (!R_AllocLightmapBlock(smax, tmax, &surf->light_s, &surf->light_t)) {
/* upload the last block */
R_UploadLightmapBlock();
if (!R_AllocLightmapBlock(smax, tmax, &surf->light_s, &surf->light_t))
Com_Error(ERR_DROP, "R_CreateSurfaceLightmap: Consecutive calls to R_AllocLightmapBlock(%d,%d) failed (lightmap_scale: %i, stextends: %f %f)\n",
smax, tmax, surf->lightmap_scale, surf->stextents[0], surf->stextents[1]);
}
surf->lightmap_texnum = r_lightmaps.lightmap_texnums[r_lightmaps.lightmap_count];
surf->deluxemap_texnum = r_lightmaps.deluxemap_texnums[r_lightmaps.deluxemap_count];
samples = r_lightmaps.sample_buffer;
samples += (surf->light_t * r_lightmaps.size + surf->light_s) * LIGHTMAP_BLOCK_BYTES;
directions = r_lightmaps.direction_buffer;
directions += (surf->light_t * r_lightmaps.size + surf->light_s) * DELUXEMAP_BLOCK_BYTES;
if (!surf->samples) /* make it fullbright */
R_BuildDefaultLightmap(surf, samples, directions, r_lightmaps.size * LIGHTMAP_BLOCK_BYTES);
else /* or light it properly */
R_BuildLightmap(surf, samples, directions, r_lightmaps.size * LIGHTMAP_BLOCK_BYTES);
}
/**
* @sa R_BeginBuildingLightmaps
* @sa R_ModBeginLoading
*/
void R_EndBuildingLightmaps (void)
{
/* upload the pending lightmap block */
R_UploadLightmapBlock();
Mem_Free(r_lightmaps.allocated);
Mem_Free(r_lightmaps.sample_buffer);
Mem_Free(r_lightmaps.direction_buffer);
r_lightmaps.allocated = NULL;
r_lightmaps.sample_buffer = NULL;
r_lightmaps.direction_buffer = NULL;
}
/**
* @sa R_BeginBuildingLightmaps
* @sa R_ModBeginLoading
*/
void R_EndBuildingLightmaps (void)
{
/* upload the pending lightmap block */
R_UploadLightmapBlock();
}
