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Fix some small integer type issues

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This commit is contained in:
Andrew Cassidy 2021-02-14 18:19:14 -08:00
parent eb4fa20d2f
commit 36bd624273
2 changed files with 12 additions and 22 deletions
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26
src/interpolator.cpp
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@ -127,22 +127,16 @@ std::array<Color, 4> Interpolator::InterpolateBC1(uint16_t low, uint16_t high) c
return colors;
}
uint8_t Interpolator::Interpolate8(uint8_t v0, uint8_t v1) const {
return (v0 * 2 + v1) / 3;
}
uint8_t Interpolator::Interpolate8(uint8_t v0, uint8_t v1) const { return (v0 * 2 + v1) / 3; }
uint8_t Interpolator::InterpolateHalf8(uint8_t v0, uint8_t v1) const {
return (v0 + v1) / 2;
}
uint8_t Interpolator::InterpolateHalf8(uint8_t v0, uint8_t v1) const { return (v0 + v1) / 2; }
// endregion
// region InterpolatorRound implementation
uint8_t InterpolatorRound::Interpolate5(uint8_t v0, uint8_t v1) const { return Interpolate8(scale5To8(v0), scale5To8(v1)); }
uint8_t InterpolatorRound::Interpolate6(uint8_t v0, uint8_t v1) const { return Interpolate8(scale6To8(v0), scale6To8(v1)); }
uint8_t InterpolatorRound::Interpolate8(uint8_t v0, uint8_t v1) const {
return (v0 * 2 + v1 + 1) / 3;
}
uint8_t InterpolatorRound::Interpolate8(uint8_t v0, uint8_t v1) const { return (v0 * 2 + v1 + 1) / 3; }
// endregion
// region InterpolatorNvidia implementation
@ -153,7 +147,7 @@ uint8_t InterpolatorNvidia::Interpolate5(uint8_t v0, uint8_t v1) const {
uint8_t InterpolatorNvidia::Interpolate6(uint8_t v0, uint8_t v1) const {
assert(v0 < 64 && v1 < 64);
const int gdiff = v1 - v0;
const int gdiff = (int) v1 - v0;
return static_cast<uint8_t>((256 * v0 + (gdiff / 4) + 128 + gdiff * 80) >> 8);
}
@ -164,13 +158,13 @@ uint8_t InterpolatorNvidia::InterpolateHalf5(uint8_t v0, uint8_t v1) const {
uint8_t InterpolatorNvidia::InterpolateHalf6(uint8_t v0, uint8_t v1) const {
assert(v0 < 64 && v1 < 64);
const int gdiff = v1 - v0;
const int gdiff = (int) v1 - v0;
return static_cast<uint8_t>((256 * v0 + gdiff / 4 + 128 + gdiff * 128) >> 8);
}
std::array<Color, 4> InterpolatorNvidia::InterpolateBC1(uint16_t low, uint16_t high) const {
// Nvidia is special and interpolation cant be done with 8-bit values, so we need to override the default behavior
auto colors = std::array<Color, 4>();
std::array<Color, 4> colors;
auto low565 = Color::Unpack565Unscaled(low);
auto high565 = Color::Unpack565Unscaled(high);
colors[0] = low565.ScaleFrom565();
@ -196,12 +190,8 @@ uint8_t InterpolatorAMD::Interpolate6(uint8_t v0, uint8_t v1) const { return Int
uint8_t InterpolatorAMD::InterpolateHalf5(uint8_t v0, uint8_t v1) const { return InterpolateHalf8(scale5To8(v0), scale5To8(v1)); }
uint8_t InterpolatorAMD::InterpolateHalf6(uint8_t v0, uint8_t v1) const { return InterpolateHalf8(scale6To8(v0), scale6To8(v1)); }
uint8_t InterpolatorAMD::Interpolate8(uint8_t v0, uint8_t v1) const {
return (v0 * 43 + v1 * 21 + 32) >> 6;
}
uint8_t InterpolatorAMD::Interpolate8(uint8_t v0, uint8_t v1) const { return (v0 * 43 + v1 * 21 + 32) >> 6; }
uint8_t InterpolatorAMD::InterpolateHalf8(uint8_t v0, uint8_t v1) const {
return (v0 + v1 + 1) >> 1;
}
uint8_t InterpolatorAMD::InterpolateHalf8(uint8_t v0, uint8_t v1) const { return (v0 + v1 + 1) >> 1; }
// endregion
} // namespace rgbcx

8
src/util.h
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@ -104,12 +104,12 @@ template <size_t Size, int Op(int)> constexpr std::array<uint8_t, Size> ExpandAr
}
template <typename S> constexpr S scale8To5(S v) {
v = v * 31 + 128;
return static_cast<S>((v + (v >> 8)) >> 8);
auto v2 = v * 31 + 128;
return static_cast<S>((v2 + (v2 >> 8)) >> 8);
}
template <typename S> constexpr S scale8To6(S v) {
v = v * 63 + 128;
return static_cast<S>((v + (v >> 8)) >> 8);
auto v2 = v * 63 + 128;
return static_cast<S>((v2 + (v2 >> 8)) >> 8);
}
template <typename S> constexpr S scale5To8(S v) {