Function LoadTextureImage

Descent3/gametexture.cpp:544–614

Given a filename, loads either the bitmap or vclip found in that file. If type is not NULL, sets it to 1 if file is animation, otherwise sets it to zero

// Given a filename, loads either the bitmap or vclip found in that file.  If type
// is not NULL, sets it to 1 if file is animation, otherwise sets it to zero
int LoadTextureImage(const char *filename, int *type, int texture_size, int mipped, int pageable, int format) {
  int anim = 0, bm_handle;
  char extension[10];
  int w, h;

  int len = strlen(filename);

  if (len < 4)
    return -1;

  strncpy(extension, &filename[len - 3], 5);

  if ((!strnicmp("oaf", extension, 3)) || (!strnicmp("ifl", extension, 3)) || (!strnicmp("abm", extension, 3)))
    anim = 1;

  if (type != NULL)
    *type = anim;

  if (anim)
    bm_handle = AllocLoadVClip(IGNORE_TABLE(filename), texture_size, mipped, pageable, format);
  else {
    if (pageable)
      bm_handle = bm_AllocLoadFileNoMemBitmap(IGNORE_TABLE(filename), mipped, format);
    else
      bm_handle = bm_AllocLoadFileBitmap(IGNORE_TABLE(filename), mipped, format);

    if (bm_handle < 1)
      return -1;

    if (texture_size == NORMAL_TEXTURE) {
      w = TEXTURE_WIDTH;
      h = TEXTURE_HEIGHT;
    } else if (texture_size == SMALL_TEXTURE) {
      // Make small textures a quarter of the size of normal textures
      w = TEXTURE_WIDTH / 2;
      h = TEXTURE_HEIGHT / 2;
    } else if (texture_size == TINY_TEXTURE) {
      // Make these tinys an eigth of the size of normal textures
      w = TEXTURE_WIDTH / 4;
      h = TEXTURE_HEIGHT / 4;
    } else if (texture_size == HUGE_TEXTURE) {
      // Make these tinys an eigth of the size of normal textures
      w = TEXTURE_WIDTH * 2;
      h = TEXTURE_HEIGHT * 2;
    } else
      return bm_handle;

    // If differing size, resize!
    if (!pageable && (w != bm_w(bm_handle, 0) || h != bm_h(bm_handle, 0))) {
      int dest_bm;

      mprintf(0, "WARNING: Resizing bitmap %s from %d x %d to %d x %d!\n", GameBitmaps[bm_handle].name,
               bm_w(bm_handle, 0), bm_h(bm_handle, 0), w, h);

      dest_bm = bm_AllocBitmap(w, h, mipped * ((w * h * 2) / 3));
      ASSERT(dest_bm >= 0);

      if (mipped)