Function d3d_TextureCacheInit

legacy/renderer/Direct3D.cpp:1007–1187

Initializes the texture cache for Direct3D

// Initializes the texture cache for Direct3D
int d3d_TextureCacheInit() {
  int i;

  // Clear our cache slots
  for (i = 0; i < MAX_LIGHTMAPS; i++) {
    GameLightmaps[i].cache_slot = -1;
  }

  for (i = 0; i < MAX_BITMAPS; i++) {
    GameBitmaps[i].cache_slot = -1;
  }

  for (i = 0; i < MAX_BUMPMAPS; i++) {
    GameBumpmaps[i].cache_slot = -1;
  }

  // Allocate room to hold all our surfaces
  UploadSurfaces = (LPDIRECTDRAWSURFACE4 *)mem_malloc(NUM_TEXTURE_CLASSES * sizeof(LPDIRECTDRAWSURFACE4));
  if (UploadSurfaces == NULL) {
    mprintf(0, "Couldn't allocate memory for UploadSurfaces!\n");

    rend_SetErrorMessage("Couldn't alloc mem for UploadSurfaces!");
    return 0;
  }

  // Allocate room to hold all our 4444 surfaces
  Upload4444Surfaces = (LPDIRECTDRAWSURFACE4 *)mem_malloc(NUM_TEXTURE_CLASSES * sizeof(LPDIRECTDRAWSURFACE4));
  if (Upload4444Surfaces == NULL) {
    mprintf(0, "Couldn't allocate memory for Upload4444Surfaces!\n");

    rend_SetErrorMessage("Couldn't alloc mem for Upload4444Surfaces!");
    return 0;
  }

  BitmapTextureSurfaces = (LPDIRECTDRAWSURFACE4 *)mem_malloc(MAX_BITMAPS * sizeof(LPDIRECTDRAWSURFACE4));
  if (BitmapTextureSurfaces == NULL) {
    mprintf(0, "Couldn't allocate memory for BitmapTextureSurfaces!\n");

    rend_SetErrorMessage("Couldn't alloc mem for BitmapTextureSurfaces!");
    return 0;
  }

  // Allocate room to hold all our surfaces
  LightmapTextureSurfaces = (LPDIRECTDRAWSURFACE4 *)mem_malloc(MAX_LIGHTMAPS * sizeof(LPDIRECTDRAWSURFACE4));
  if (LightmapTextureSurfaces == NULL) {
    mprintf(0, "Couldn't allocate memory for LightmapTextureSurfaces!\n");
    rend_SetErrorMessage("Couldn't alloc mem for LightmapTextureSurfaces!");
    return 0;
  }

  if (d3d_CanBumpmap) {
    BumpmapTextureSurfaces = (LPDIRECTDRAWSURFACE4 *)mem_malloc(MAX_BUMPMAPS * sizeof(LPDIRECTDRAWSURFACE4));
    if (BumpmapTextureSurfaces == NULL) {
      mprintf(0, "Couldn't allocate memory for BumpmapTextureSurfaces!\n");
      rend_SetErrorMessage("Couldn't alloc mem for BumpmapTextureSurfaces!");
      return 0;
    }