Fixed a rare issue when mipmap 0 and mipmap 1 of an DXT1 texture have different transparency
Fixed a rare issue when mipmap 0 and mipmap 1 of an DXT1 texture have different transparency

ptitSeb/glshim,ptitSeb/gl4es,ptitSeb/gl4es,ptitSeb/glshim,ptitSeb/glshim,ptitSeb/gl4es,ptitSeb/gl4es,ptitSeb/glshim