3D image 0:
  Level 0: {512, 512, 6} @ Bc3RGBAUnorm (1536.0 kB)
  Level 1: {256, 256, 6} @ Bc3RGBAUnorm (384.0 kB)
  Level 2: {128, 128, 6} @ Bc3RGBAUnorm (96.0 kB)
  Level 3: {64, 64, 6} @ Bc3RGBAUnorm (24.0 kB)
  Level 4: {32, 32, 6} @ Bc3RGBAUnorm (6.0 kB)
  Level 5: {16, 16, 6} @ Bc3RGBAUnorm (1.5 kB)
Total image data size: 2047.5 kB