Function WriteLightmapChunk

Descent3/LoadLevel.cpp:4888–4973

}

void WriteLightmapChunk(CFILE *fp) {
  int start_pos;
  int i;
  int lightmap_info_count = 0;
  int lightmap_count = 0;

  uint16_t *lightmap_remap = (uint16_t *)mem_malloc(MAX_LIGHTMAPS * sizeof(uint16_t));
  uint8_t *lightmap_spoken_for = (uint8_t *)mem_malloc(MAX_LIGHTMAPS);

  ASSERT(lightmap_remap);
  ASSERT(lightmap_spoken_for);

  memset(lightmap_spoken_for, 0, MAX_LIGHTMAPS);

  // Build a lightmap remap list
  for (i = 0; i < MAX_LIGHTMAP_INFOS; i++) {
    if (LightmapInfo[i].used && LightmapInfo[i].type != LMI_DYNAMIC) {
      if (!lightmap_spoken_for[LightmapInfo[i].lm_handle]) {
        lightmap_spoken_for[LightmapInfo[i].lm_handle] = 1;
        lightmap_remap[LightmapInfo[i].lm_handle] = lightmap_count;

        lightmap_count++;
      }

      LightmapInfoRemap[i] = lightmap_info_count;
      lightmap_info_count++;
    } else
      LightmapInfoRemap[i] = BAD_LMI_INDEX;
  }

  memset(lightmap_spoken_for, 0, MAX_LIGHTMAPS);
  start_pos = StartChunk(fp, CHUNK_NEW_LIGHTMAPS);

  cf_WriteInt(fp, lightmap_count);

  // Write out lightmap texture data
  for (i = 0; i < MAX_LIGHTMAP_INFOS; i++) {
    if (LightmapInfo[i].used && LightmapInfo[i].type != LMI_DYNAMIC) {
      if (!lightmap_spoken_for[LightmapInfo[i].lm_handle]) {
        lightmap_spoken_for[LightmapInfo[i].lm_handle] = 1;
        int w = lm_w(LightmapInfo[i].lm_handle);
        int h = lm_h(LightmapInfo[i].lm_handle);

        ASSERT(w >= 2 && w <= 128);
        ASSERT(h >= 2 && h <= 128);

        cf_WriteShort(fp, w);
        cf_WriteShort(fp, h);

        uint16_t *data = lm_data(LightmapInfo[i].lm_handle);
        ASSERT(data != NULL);

        CheckToWriteCompressShort(fp, data, w * h);
      }
    }
  }

  cf_WriteInt(fp, lightmap_info_count);