235 lines
7.4 KiB
C++
235 lines
7.4 KiB
C++
// Copyright 2009 Dolphin Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#pragma once
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#include <array>
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#include "Common/EnumMap.h"
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#include "VideoCommon/BPMemory.h"
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class Tev
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{
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struct TevColor
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{
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constexpr TevColor() = default;
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constexpr explicit TevColor(s16 a_, s16 b_, s16 g_, s16 r_) : a(a_), b(b_), g(g_), r(r_) {}
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s16 a = 0;
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s16 b = 0;
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s16 g = 0;
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s16 r = 0;
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constexpr static TevColor All(s16 value) { return TevColor(value, value, value, value); }
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constexpr s16& operator[](int index)
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{
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switch (index)
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{
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case ALP_C:
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return a;
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case BLU_C:
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return b;
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case GRN_C:
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return g;
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case RED_C:
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return r;
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default:
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// invalid
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return a;
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}
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}
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};
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struct TevColorRef
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{
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constexpr explicit TevColorRef(const s16& r_, const s16& g_, const s16& b_)
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: r(r_), g(g_), b(b_)
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{
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}
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const s16& r;
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const s16& g;
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const s16& b;
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constexpr static TevColorRef Color(const TevColor& color)
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{
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return TevColorRef(color.r, color.g, color.b);
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}
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constexpr static TevColorRef All(const s16& value) { return TevColorRef(value, value, value); }
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constexpr static TevColorRef Alpha(const TevColor& color) { return All(color.a); }
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};
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struct TevAlphaRef
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{
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constexpr explicit TevAlphaRef(const TevColor& color) : a(color.a) {}
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constexpr explicit TevAlphaRef(const s16& a_) : a(a_) {}
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const s16& a;
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};
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struct TevKonstRef
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{
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constexpr explicit TevKonstRef(const s16& a_, const s16& r_, const s16& g_, const s16& b_)
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: a(a_), r(r_), g(g_), b(b_)
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{
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}
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const s16& a;
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const s16& r;
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const s16& g;
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const s16& b;
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constexpr static TevKonstRef Value(const s16& value)
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{
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return TevKonstRef(value, value, value, value);
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}
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constexpr static TevKonstRef Konst(const s16& alpha, const TevColor& color)
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{
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return TevKonstRef(alpha, color.r, color.g, color.b);
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}
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};
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struct InputRegType
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{
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unsigned a : 8;
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unsigned b : 8;
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unsigned c : 8;
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signed d : 11;
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};
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struct TextureCoordinateType
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{
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signed s : 24;
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signed t : 24;
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};
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// color order: ABGR
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Common::EnumMap<TevColor, TevOutput::Color2> Reg;
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std::array<TevColor, 4> KonstantColors;
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TevColor TexColor;
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TevColor RasColor;
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TevColor StageKonst;
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// Fixed constants, corresponding to KonstSel
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static constexpr s16 V0 = 0;
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static constexpr s16 V1_8 = 32;
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static constexpr s16 V1_4 = 64;
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static constexpr s16 V3_8 = 96;
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static constexpr s16 V1_2 = 128;
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static constexpr s16 V5_8 = 159;
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static constexpr s16 V3_4 = 191;
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static constexpr s16 V7_8 = 223;
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static constexpr s16 V1 = 255;
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u8 AlphaBump = 0;
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u8 IndirectTex[4][4]{};
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TextureCoordinateType TexCoord{};
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const Common::EnumMap<TevColorRef, TevColorArg::Zero> m_ColorInputLUT{
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TevColorRef::Color(Reg[TevOutput::Prev]), // prev.rgb
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TevColorRef::Alpha(Reg[TevOutput::Prev]), // prev.aaa
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TevColorRef::Color(Reg[TevOutput::Color0]), // c0.rgb
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TevColorRef::Alpha(Reg[TevOutput::Color0]), // c0.aaa
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TevColorRef::Color(Reg[TevOutput::Color1]), // c1.rgb
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TevColorRef::Alpha(Reg[TevOutput::Color1]), // c1.aaa
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TevColorRef::Color(Reg[TevOutput::Color2]), // c2.rgb
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TevColorRef::Alpha(Reg[TevOutput::Color2]), // c2.aaa
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TevColorRef::Color(TexColor), // tex.rgb
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TevColorRef::Alpha(TexColor), // tex.aaa
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TevColorRef::Color(RasColor), // ras.rgb
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TevColorRef::Alpha(RasColor), // ras.aaa
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TevColorRef::All(V1), // one
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TevColorRef::All(V1_2), // half
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TevColorRef::Color(StageKonst), // konst
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TevColorRef::All(V0), // zero
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};
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const Common::EnumMap<TevAlphaRef, TevAlphaArg::Zero> m_AlphaInputLUT{
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TevAlphaRef(Reg[TevOutput::Prev]), // prev
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TevAlphaRef(Reg[TevOutput::Color0]), // c0
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TevAlphaRef(Reg[TevOutput::Color1]), // c1
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TevAlphaRef(Reg[TevOutput::Color2]), // c2
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TevAlphaRef(TexColor), // tex
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TevAlphaRef(RasColor), // ras
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TevAlphaRef(StageKonst), // konst
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TevAlphaRef(V0), // zero
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};
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const Common::EnumMap<TevKonstRef, KonstSel::K3_A> m_KonstLUT{
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TevKonstRef::Value(V1), // 1
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TevKonstRef::Value(V7_8), // 7/8
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TevKonstRef::Value(V3_4), // 3/4
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TevKonstRef::Value(V5_8), // 5/8
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TevKonstRef::Value(V1_2), // 1/2
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TevKonstRef::Value(V3_8), // 3/8
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TevKonstRef::Value(V1_4), // 1/4
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TevKonstRef::Value(V1_8), // 1/8
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// These are "invalid" values, not meant to be used. On hardware,
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// they all output zero.
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TevKonstRef::Value(V0), TevKonstRef::Value(V0), TevKonstRef::Value(V0),
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TevKonstRef::Value(V0),
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// These values are valid for RGB only; they're invalid for alpha
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TevKonstRef::Konst(V0, KonstantColors[0]), // Konst 0 RGB
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TevKonstRef::Konst(V0, KonstantColors[1]), // Konst 1 RGB
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TevKonstRef::Konst(V0, KonstantColors[2]), // Konst 2 RGB
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TevKonstRef::Konst(V0, KonstantColors[3]), // Konst 3 RGB
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TevKonstRef::Value(KonstantColors[0].r), // Konst 0 Red
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TevKonstRef::Value(KonstantColors[1].r), // Konst 1 Red
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TevKonstRef::Value(KonstantColors[2].r), // Konst 2 Red
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TevKonstRef::Value(KonstantColors[3].r), // Konst 3 Red
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TevKonstRef::Value(KonstantColors[0].g), // Konst 0 Green
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TevKonstRef::Value(KonstantColors[1].g), // Konst 1 Green
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TevKonstRef::Value(KonstantColors[2].g), // Konst 2 Green
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TevKonstRef::Value(KonstantColors[3].g), // Konst 3 Green
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TevKonstRef::Value(KonstantColors[0].b), // Konst 0 Blue
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TevKonstRef::Value(KonstantColors[1].b), // Konst 1 Blue
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TevKonstRef::Value(KonstantColors[2].b), // Konst 2 Blue
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TevKonstRef::Value(KonstantColors[3].b), // Konst 3 Blue
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TevKonstRef::Value(KonstantColors[0].a), // Konst 0 Alpha
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TevKonstRef::Value(KonstantColors[1].a), // Konst 1 Alpha
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TevKonstRef::Value(KonstantColors[2].a), // Konst 2 Alpha
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TevKonstRef::Value(KonstantColors[3].a), // Konst 3 Alpha
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};
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static constexpr Common::EnumMap<s16, TevBias::Compare> s_BiasLUT{0, 128, -128, 0};
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static constexpr Common::EnumMap<u8, TevScale::Divide2> s_ScaleLShiftLUT{0, 1, 2, 0};
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static constexpr Common::EnumMap<u8, TevScale::Divide2> s_ScaleRShiftLUT{0, 0, 0, 1};
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enum BufferBase
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{
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DIRECT = 0,
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DIRECT_TFETCH = 16,
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INDIRECT = 32
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};
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void SetRasColor(RasColorChan colorChan, u32 swaptable);
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void DrawColorRegular(const TevStageCombiner::ColorCombiner& cc, const InputRegType inputs[4]);
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void DrawColorCompare(const TevStageCombiner::ColorCombiner& cc, const InputRegType inputs[4]);
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void DrawAlphaRegular(const TevStageCombiner::AlphaCombiner& ac, const InputRegType inputs[4]);
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void DrawAlphaCompare(const TevStageCombiner::AlphaCombiner& ac, const InputRegType inputs[4]);
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void Indirect(unsigned int stageNum, s32 s, s32 t);
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public:
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s32 Position[3]{};
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u8 Color[2][4]{}; // must be RGBA for correct swap table ordering
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TextureCoordinateType Uv[8]{};
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s32 IndirectLod[4]{};
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bool IndirectLinear[4]{};
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s32 TextureLod[16]{};
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bool TextureLinear[16]{};
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enum
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{
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ALP_C,
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BLU_C,
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GRN_C,
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RED_C
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};
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void SetKonstColors();
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void Draw();
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};
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