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