message: Minor update to SRGBAverage helper function
diff: @@ -136,7 +136,8 @@ void GenerateCheckerBoardPattern(Uint32 Width, Uint32 Height, TEXTURE_FORMAT Fmt
  template <typename ChannelType>
  ChannelType SRGBAverage(ChannelType c0, ChannelType c1, ChannelType c2, ChannelType c3)
  {
  - static constexpr float MinVal = static_cast<float>(std::numeric_limits<ChannelType>::min());
  + static_assert(std::numeric_limits<ChannelType>::is_integer && !std::numeric_limits<ChannelType>::is_signed, "Unsigned integers are expected");
  +
  static constexpr float MaxVal = static_cast<float>(std::numeric_limits<ChannelType>::max());
  static constexpr float MaxValInv = 1.f / MaxVal;
  @@ -148,7 +149,7 @@ ChannelType SRGBAverage(ChannelType c0, ChannelType c1, ChannelType c2, ChannelT
  float fLinearAverage = (FastSRGBToLinear(fc0) + FastSRGBToLinear(fc1) + FastSRGBToLinear(fc2) + FastSRGBToLinear(fc3)) * 0.25f;
  float fSRGBAverage = FastLinearToSRGB(fLinearAverage) * MaxVal;
  - fSRGBAverage = std::max(fSRGBAverage, MinVal);
  + // Clamping by MaxVal is essential because fast SRGB math is imprecise
  fSRGBAverage = std::min(fSRGBAverage, MaxVal);
  return static_cast<ChannelType>(fSRGBAverage);
  