Function d3d_CreateUploadSurfaces

legacy/renderer/Direct3D.cpp:938–991

Creates the surfaces we use for uploading

// Creates the surfaces we use for uploading
int d3d_CreateUploadSurfaces() {
  int i;
  HRESULT ddrval;

  for (i = 0; i < NUM_TEXTURE_CLASSES; i++) {
    // Create a texture interface and make it auto-managed
    DDSURFACEDESC2 ddsd;

    memset(&ddsd, 0, sizeof(ddsd));
    ddsd.dwSize = sizeof(ddsd);
    ddsd.dwFlags = DDSD_CAPS;
    ddsd.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN;
    ddsd.dwFlags = DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH | DDSD_PIXELFORMAT;

    ddsd.dwWidth = 256 >> i;
    ddsd.dwHeight = 256 >> i;

    ddsd.ddpfPixelFormat = RGB_texture_format;

    ddrval = lpDD->CreateSurface(&ddsd, &UploadSurfaces[i], NULL);

    if (ddrval != DD_OK) {
      mprintf(0, "Creating 1555 texture surface failed!\n");
      return 0;
    }
  }

  // Now create 4444 surfaces
  for (i = 0; i < NUM_TEXTURE_CLASSES; i++) {
    // Create a texture interface and make it auto-managed
    DDSURFACEDESC2 ddsd;

    memset(&ddsd, 0, sizeof(ddsd));
    ddsd.dwSize = sizeof(ddsd);
    ddsd.dwFlags = DDSD_CAPS;
    ddsd.ddsCaps.dwCaps = DDSCAPS_TEXTURE;
    ddsd.ddsCaps.dwCaps2 = DDSCAPS2_TEXTUREMANAGE;
    ddsd.dwFlags = DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH | DDSD_PIXELFORMAT;

    ddsd.dwWidth = 256 >> i;
    ddsd.dwHeight = 256 >> i;

    ddsd.ddpfPixelFormat = Texture_4444_format;

    ddrval = lpDD->CreateSurface(&ddsd, &Upload4444Surfaces[i], NULL);

    if (ddrval != DD_OK) {
      mprintf(0, "Creating 4444 texture surface failed!\n");
      return 0;
    }
  }

  return 1;
}

// Loads an environment map for bumpmapping. Returns 1 on success, 0 on fail
int d3d_LoadEnvironmentMap() {