In _mesa_compressed_texture_size(), texcompress.c there's lots of code
similar to the following:

case MESA_FORMAT_RGBA_DXT1:
      /* round up width, height to next multiple of 4 */
      width = (width + 3) & ~3;
      height = (height + 3) & ~3;
      /* 8 bytes per 4x4 tile of RGB[A] texels */
      size = width * height / 2;
      /* Textures smaller than 4x4 will effectively be made into 4x4 and
       * take 8 bytes.
       */
      if (size < 8)
         size = 8;
      return size;

What's the purpose of the if (size < 8) size = 8;? It seems redundant to me.

Philipp

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