Function RenderSubmodelFace

model/newstyle.cpp:173–474

int Lightmap_debug_model = -1;

inline void RenderSubmodelFace(poly_model *pm, bsp_info *sm, int facenum) {

  g3Point *pointlist[100];
  int bm_handle;
  int smooth = 0;
  polyface *fp = &sm->faces[facenum];
  int modelnum = sm - pm->submodel;
  texture *texp = nullptr;
  int t;
  int custom = 0;
  g3Codes face_cc;
  int triface = 0;

  face_cc.cc_and = 0xff;
  face_cc.cc_or = 0;

  triangulated_faces[facenum] = 0;

  if (sm->flags & SOF_CUSTOM)
    custom = 1;

  // Setup texturing
  if (fp->texnum != -1)
    texp = &GameTextures[pm->textures[fp->texnum]];

  if (texp && custom && Polymodel_use_effect && (Polymodel_effect.type & PEF_CUSTOM_TEXTURE))
    texp = &GameTextures[Polymodel_effect.custom_texture];

  // Set radiosity lightmaps if needed
  if (Polymodel_light_type == POLYMODEL_LIGHTING_LIGHTMAP) {
    rend_SetOverlayMap(
        LightmapInfo[Polylighting_lightmap_object->lightmap_faces[modelnum][facenum].lmi_handle].lm_handle);
  }

  // Do bump mapping
  if ((Polymodel_effect.type & PEF_BUMPMAPPED) && texp && texp->bumpmap != -1 &&
      Polymodel_light_type == POLYMODEL_LIGHTING_GOURAUD) {
    rend_SetOverlayType(OT_NONE);
    rend_SetBumpmapReadyState(1, texp->bumpmap);
    if ((GameTextures[fp->texnum].flags & TF_SMOOTH_SPECULAR))
      smooth = 1;
  }

  float uchange = 0, vchange = 0;

  // Figure out if there is any texture sliding
  if (texp && texp->slide_u != 0) {
    int int_time = Gametime / texp->slide_u;
    float norm_time = Gametime - (int_time * texp->slide_u);
    norm_time /= texp->slide_u;

    uchange = norm_time;
  }

  if (texp && texp->slide_v != 0) {
    int int_time = Gametime / texp->slide_v;
    float norm_time = Gametime - (int_time * texp->slide_v);
    norm_time /= texp->slide_v;