message: Fixed -Wshift-negative-value warnings
diff: @@ -315,7 +315,7 @@ namespace irr { namespace video
  {
  int8_t& pix = reinterpret_cast<int8_t*>(_pix)[0];
  {
  - const int8_t mask = 0xffLL;
  + const uint8_t mask = 0xffULL;
  pix &= (~(mask << 0));
  double inp = _input[0];
  inp *= 127.;
  @@ -344,7 +344,7 @@ namespace irr { namespace video
  {
  int8_t& pix = reinterpret_cast<int8_t*>(_pix)[0];
  {
  - const int8_t mask = 0xffLL;
  + const uint8_t mask = 0xffULL;
  pix &= (~(mask << 0));
  double inp = _input[0];
  inp /= _scale;
  @@ -372,7 +372,7 @@ namespace irr { namespace video
  {
  int8_t& pix = reinterpret_cast<int8_t*>(_pix)[0];
  {
  - const int8_t mask = 0xffLL;
  + const uint8_t mask = 0xffULL;
  pix &= (~(mask << 0));
  int64_t inp = _input[0];
  pix |= ((inp & mask) << 0);
  @@ -1671,7 +1671,7 @@ namespace irr { namespace video
  {
  int16_t& pix = reinterpret_cast<int16_t*>(_pix)[0];
  {
  - const int16_t mask = 0xffffLL;
  + const uint16_t mask = 0xffffULL;
  pix &= (~(mask << 0));
  double inp = _input[0];
  inp *= 32767.;
  @@ -2138,7 +2138,7 @@ namespace irr { namespace video
  {
  int32_t& pix = reinterpret_cast<int32_t*>(_pix)[0];
  {
  - const int32_t mask = 0xffffffffLL;
  + const uint32_t mask = 0xffffffffULL;
  pix &= (~(mask << 0));
  int64_t inp = _input[0];
  pix |= ((inp & mask) << 0);
  @@ -2234,7 +2234,7 @@ namespace irr { namespace video
  {
  int64_t& pix = reinterpret_cast<int64_t*>(_pix)[0];
  {
  - const int64_t mask = 0xffffffffffffffffLL;
  + const uint64_t mask = 0xffffffffffffffffULL;
  pix &= (~(mask << 0));
  int64_t inp = _input[0];
  pix |= ((inp & mask) << 0);
  