| /////////////////////////////////////////////////////////////////////////////// |
| // // |
| // DxilInterpolationMode.cpp // |
| // Copyright (C) Microsoft Corporation. All rights reserved. // |
| // This file is distributed under the University of Illinois Open Source // |
| // License. See LICENSE.TXT for details. // |
| // // |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| #include "dxc/DXIL/DxilInterpolationMode.h" |
| #include "dxc/Support/Global.h" |
| |
| namespace hlsl { |
| |
| //------------------------------------------------------------------------------ |
| // |
| // InterpolationMode class methods. |
| // |
| InterpolationMode::InterpolationMode() : m_Kind(Kind::Undefined) {} |
| |
| InterpolationMode::InterpolationMode(Kind Kind) : m_Kind(Kind) {} |
| |
| InterpolationMode::InterpolationMode(unsigned long long kind) { |
| m_Kind = (Kind)kind; |
| if (m_Kind >= Kind::Invalid) { |
| m_Kind = Kind::Invalid; |
| } |
| } |
| |
| // NoInterpolation, |
| // bLinear, |
| // bNoperspective, |
| // bCentroid, |
| // bSample |
| static const DXIL::InterpolationMode interpModeTab[] = { |
| DXIL::InterpolationMode::Undefined, // 0 , False , False , |
| // False , False , False |
| DXIL::InterpolationMode::LinearSample, // 1 , False , False , |
| // False , False , |
| // True |
| DXIL::InterpolationMode::LinearCentroid, // 2 , False , False |
| // , False , True , |
| // False |
| DXIL::InterpolationMode::LinearSample, // 3 , False , False , |
| // False , True , True |
| DXIL::InterpolationMode::LinearNoperspective, // 4 , False , |
| // False , True , |
| // False , False |
| DXIL::InterpolationMode:: |
| LinearNoperspectiveSample, // 5 , False , False , |
| // True , False , True |
| DXIL::InterpolationMode:: |
| LinearNoperspectiveCentroid, // 6 , False , False , |
| // True , True , False |
| DXIL::InterpolationMode::LinearNoperspectiveSample, // 7 , False , |
| // False , True |
| // , True , True |
| DXIL::InterpolationMode::Linear, // 8 , False , True , |
| // False , False , False |
| DXIL::InterpolationMode::LinearSample, // 9 , False , True , |
| // False , False , |
| // True |
| DXIL::InterpolationMode::LinearCentroid, // 10 , False , True |
| // , False , True , |
| // False |
| DXIL::InterpolationMode::LinearSample, // 11 , False , True , |
| // False , True , True |
| DXIL::InterpolationMode::LinearNoperspective, // 12 , False , |
| // True , True , False |
| // , False |
| DXIL::InterpolationMode::LinearNoperspectiveSample, // 13 , False , |
| // True , True |
| // , False , True |
| DXIL::InterpolationMode:: |
| LinearNoperspectiveCentroid, // 14 , False , True , |
| // True , True , False |
| DXIL::InterpolationMode::LinearNoperspectiveSample, // 15 , False , |
| // True , True |
| // , True , True |
| DXIL::InterpolationMode::Constant, // 16 , True , False , |
| // False , False , False |
| DXIL::InterpolationMode::Invalid, // 17 , True , False , False |
| // , False , True |
| DXIL::InterpolationMode::Invalid, // 18 , True , False , False |
| // , True , False |
| DXIL::InterpolationMode::Invalid, // 19 , True , False , False |
| // , True , True |
| DXIL::InterpolationMode::Invalid, // 20 , True , False , True |
| // , False , False |
| DXIL::InterpolationMode::Invalid, // 21 , True , False , True |
| // , False , True |
| DXIL::InterpolationMode::Invalid, // 22 , True , False , True |
| // , True , False |
| DXIL::InterpolationMode::Invalid, // 23 , True , False , True |
| // , True , True |
| DXIL::InterpolationMode::Invalid, // 24 , True , True , |
| // False , False , False |
| DXIL::InterpolationMode::Invalid, // 25 , True , True , |
| // False , False , True |
| DXIL::InterpolationMode::Invalid, // 26 , True , True , |
| // False , True , False |
| DXIL::InterpolationMode::Invalid, // 27 , True , True , |
| // False , True , True |
| DXIL::InterpolationMode::Invalid, // 28 , True , True , |
| // True , False , False |
| DXIL::InterpolationMode::Invalid, // 29 , True , True , |
| // True , False , True |
| DXIL::InterpolationMode::Invalid, // 30 , True , True , |
| // True , True , False |
| DXIL::InterpolationMode::Invalid, // 31 , True , True , |
| // True , True , True |
| }; |
| |
| InterpolationMode::InterpolationMode(bool bNoInterpolation, bool bLinear, |
| bool bNoperspective, bool bCentroid, |
| bool bSample) { |
| unsigned mask = (unsigned)bNoInterpolation << 4; |
| mask |= ((unsigned)bLinear) << 3; |
| mask |= ((unsigned)bNoperspective) << 2; |
| mask |= ((unsigned)bCentroid) << 1; |
| mask |= ((unsigned)bSample); |
| |
| m_Kind = interpModeTab[mask]; |
| |
| // interpModeTab is generate from following code. |
| // m_Kind = Kind::Invalid; // Cases not set below are invalid. |
| // bool bAnyLinear = bLinear | bNoperspective | bCentroid | bSample; |
| // if (bNoInterpolation) { |
| // if (!bAnyLinear) m_Kind = Kind::Constant; |
| //} |
| // else if (bAnyLinear) { |
| // if (bSample) { // warning case: sample overrides centroid. |
| // if (bNoperspective) m_Kind = Kind::LinearNoperspectiveSample; |
| // else m_Kind = Kind::LinearSample; |
| // } |
| // else { |
| // if (!bNoperspective && !bCentroid) m_Kind = Kind::Linear; |
| // else if (!bNoperspective && bCentroid) m_Kind = Kind::LinearCentroid; |
| // else if ( bNoperspective && !bCentroid) m_Kind = |
| // Kind::LinearNoperspective; else if ( bNoperspective && bCentroid) |
| // m_Kind = Kind::LinearNoperspectiveCentroid; |
| // } |
| //} |
| // else { |
| // m_Kind = Kind::Undefined; |
| //} |
| } |
| |
| InterpolationMode &InterpolationMode::operator=(const InterpolationMode &o) { |
| if (this != &o) { |
| m_Kind = o.m_Kind; |
| } |
| |
| return *this; |
| } |
| |
| bool InterpolationMode::operator==(const InterpolationMode &o) const { |
| return m_Kind == o.m_Kind; |
| } |
| |
| bool InterpolationMode::IsAnyLinear() const { |
| return m_Kind < Kind::Invalid && m_Kind != Kind::Undefined && |
| m_Kind != Kind::Constant; |
| } |
| |
| bool InterpolationMode::IsAnyNoPerspective() const { |
| return IsLinearNoperspective() || IsLinearNoperspectiveCentroid() || |
| IsLinearNoperspectiveSample(); |
| } |
| |
| bool InterpolationMode::IsAnyCentroid() const { |
| return IsLinearCentroid() || IsLinearNoperspectiveCentroid(); |
| } |
| |
| bool InterpolationMode::IsAnySample() const { |
| return IsLinearSample() || IsLinearNoperspectiveSample(); |
| } |
| |
| const char *InterpolationMode::GetName() const { |
| switch (m_Kind) { |
| case Kind::Undefined: |
| return ""; |
| case Kind::Constant: |
| return "nointerpolation"; |
| case Kind::Linear: |
| return "linear"; |
| case Kind::LinearCentroid: |
| return "centroid"; |
| case Kind::LinearNoperspective: |
| return "noperspective"; |
| case Kind::LinearNoperspectiveCentroid: |
| return "noperspective centroid"; |
| case Kind::LinearSample: |
| return "sample"; |
| case Kind::LinearNoperspectiveSample: |
| return "noperspective sample"; |
| default: |
| DXASSERT(false, "invalid interpolation mode"); |
| return "invalid"; |
| } |
| } |
| |
| } // namespace hlsl |
