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metaforce/hecl/include/HECL/Backend/GX.hpp

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#ifndef HECLBACKEND_GX_HPP
#define HECLBACKEND_GX_HPP
#include "Backend.hpp"
#include <Athena/DNA.hpp>
#include <stdint.h>
#include <stdlib.h>
#include <algorithm>
namespace HECL
{
namespace Backend
{
struct GX : IBackend
{
enum AttrType
{
NONE,
DIRECT,
INDEX8,
INDEX16
};
enum TevOp
{
TEV_ADD = 0,
TEV_SUB = 1,
TEV_COMP_R8_GT = 8,
TEV_COMP_R8_EQ = 9,
TEV_COMP_GR16_GT = 10,
TEV_COMP_GR16_EQ = 11,
TEV_COMP_BGR24_GT = 12,
TEV_COMP_BGR24_EQ = 13,
TEV_COMP_RGB8_GT = 14,
TEV_COMP_RGB8_EQ = 15,
TEV_COMP_A8_GT = TEV_COMP_RGB8_GT, // for alpha channel
TEV_COMP_A8_EQ = TEV_COMP_RGB8_EQ // for alpha channel
};
enum TevBias
{
TB_ZERO = 0,
TB_ADDHALF = 1,
TB_SUBHALF = 2,
};
enum TevScale
{
CS_SCALE_1 = 0,
CS_SCALE_2 = 1,
CS_SCALE_4 = 2,
CS_DIVIDE_2 = 3
};
enum TexGenType
{
TG_MTX3x4 = 0,
TG_MTX2x4,
TG_BUMP0,
TG_BUMP1,
TG_BUMP2,
TG_BUMP3,
TG_BUMP4,
TG_BUMP5,
TG_BUMP6,
TG_BUMP7,
TG_SRTG
};
enum TevRegID
{
TEVPREV = 0,
TEVREG0 = 1,
TEVREG1 = 2,
TEVREG2 = 3,
TEVLAZY = 5
};
enum TevColorArg
{
CC_CPREV = 0, /*!< Use the color value from previous TEV stage */
CC_APREV = 1, /*!< Use the alpha value from previous TEV stage */
CC_C0 = 2, /*!< Use the color value from the color/output register 0 */
CC_A0 = 3, /*!< Use the alpha value from the color/output register 0 */
CC_C1 = 4, /*!< Use the color value from the color/output register 1 */
CC_A1 = 5, /*!< Use the alpha value from the color/output register 1 */
CC_C2 = 6, /*!< Use the color value from the color/output register 2 */
CC_A2 = 7, /*!< Use the alpha value from the color/output register 2 */
CC_TEXC = 8, /*!< Use the color value from texture */
CC_TEXA = 9, /*!< Use the alpha value from texture */
CC_RASC = 10, /*!< Use the color value from rasterizer */
CC_RASA = 11, /*!< Use the alpha value from rasterizer */
CC_ONE = 12,
CC_HALF = 13,
CC_KONST = 14,
CC_ZERO = 15, /*!< Use to pass zero value */
/* Non-GX */
CC_LAZY /*!< Lazy register allocation */
};
enum TevAlphaArg
{
CA_APREV = 0, /*!< Use the alpha value from previous TEV stage */
CA_A0 = 1, /*!< Use the alpha value from the color/output register 0 */
CA_A1 = 2, /*!< Use the alpha value from the color/output register 1 */
CA_A2 = 3, /*!< Use the alpha value from the color/output register 2 */
CA_TEXA = 4, /*!< Use the alpha value from texture */
CA_RASA = 5, /*!< Use the alpha value from rasterizer */
CA_KONST = 6,
CA_ZERO = 7, /*!< Use to pass zero value */
/* Non-GX */
CA_LAZY /*!< Lazy register allocation */
};
enum TevKColorSel
{
TEV_KCSEL_8_8 = 0x00,
TEV_KCSEL_7_8 = 0x01,
TEV_KCSEL_6_8 = 0x02,
TEV_KCSEL_5_8 = 0x03,
TEV_KCSEL_4_8 = 0x04,
TEV_KCSEL_3_8 = 0x05,
TEV_KCSEL_2_8 = 0x06,
TEV_KCSEL_1_8 = 0x07,
TEV_KCSEL_1 = TEV_KCSEL_8_8,
TEV_KCSEL_3_4 = TEV_KCSEL_6_8,
TEV_KCSEL_1_2 = TEV_KCSEL_4_8,
TEV_KCSEL_1_4 = TEV_KCSEL_2_8,
TEV_KCSEL_K0 = 0x0C,
TEV_KCSEL_K1 = 0x0D,
TEV_KCSEL_K2 = 0x0E,
TEV_KCSEL_K3 = 0x0F,
TEV_KCSEL_K0_R = 0x10,
TEV_KCSEL_K1_R = 0x11,
TEV_KCSEL_K2_R = 0x12,
TEV_KCSEL_K3_R = 0x13,
TEV_KCSEL_K0_G = 0x14,
TEV_KCSEL_K1_G = 0x15,
TEV_KCSEL_K2_G = 0x16,
TEV_KCSEL_K3_G = 0x17,
TEV_KCSEL_K0_B = 0x18,
TEV_KCSEL_K1_B = 0x19,
TEV_KCSEL_K2_B = 0x1A,
TEV_KCSEL_K3_B = 0x1B,
TEV_KCSEL_K0_A = 0x1C,
TEV_KCSEL_K1_A = 0x1D,
TEV_KCSEL_K2_A = 0x1E,
TEV_KCSEL_K3_A = 0x1F
};
enum TevKAlphaSel
{
TEV_KASEL_8_8 = 0x00,
TEV_KASEL_7_8 = 0x01,
TEV_KASEL_6_8 = 0x02,
TEV_KASEL_5_8 = 0x03,
TEV_KASEL_4_8 = 0x04,
TEV_KASEL_3_8 = 0x05,
TEV_KASEL_2_8 = 0x06,
TEV_KASEL_1_8 = 0x07,
TEV_KASEL_1 = TEV_KASEL_8_8,
TEV_KASEL_3_4 = TEV_KASEL_6_8,
TEV_KASEL_1_2 = TEV_KASEL_4_8,
TEV_KASEL_1_4 = TEV_KASEL_2_8,
TEV_KASEL_K0_R = 0x10,
TEV_KASEL_K1_R = 0x11,
TEV_KASEL_K2_R = 0x12,
TEV_KASEL_K3_R = 0x13,
TEV_KASEL_K0_G = 0x14,
TEV_KASEL_K1_G = 0x15,
TEV_KASEL_K2_G = 0x16,
TEV_KASEL_K3_G = 0x17,
TEV_KASEL_K0_B = 0x18,
TEV_KASEL_K1_B = 0x19,
TEV_KASEL_K2_B = 0x1A,
TEV_KASEL_K3_B = 0x1B,
TEV_KASEL_K0_A = 0x1C,
TEV_KASEL_K1_A = 0x1D,
TEV_KASEL_K2_A = 0x1E,
TEV_KASEL_K3_A = 0x1F
};
enum TexGenSrc
{
TG_POS = 0,
TG_NRM,
TG_BINRM,
TG_TANGENT,
TG_TEX0,
TG_TEX1,
TG_TEX2,
TG_TEX3,
TG_TEX4,
TG_TEX5,
TG_TEX6,
TG_TEX7,
TG_TEXCOORD0,
TG_TEXCOORD1,
TG_TEXCOORD2,
TG_TEXCOORD3,
TG_TEXCOORD4,
TG_TEXCOORD5,
TG_TEXCOORD6,
TG_COLOR0,
TG_COLOR1
};
enum TexMtx
{
TEXMTX0 = 30,
TEXMTX1 = 33,
TEXMTX2 = 36,
TEXMTX3 = 39,
TEXMTX4 = 42,
TEXMTX5 = 45,
TEXMTX6 = 48,
TEXMTX7 = 51,
TEXMTX8 = 54,
TEXMTX9 = 57,
IDENTITY = 60
};
enum PTTexMtx
{
PTTEXMTX0 = 64,
PTTEXMTX1 = 67,
PTTEXMTX2 = 70,
PTTEXMTX3 = 73,
PTTEXMTX4 = 76,
PTTEXMTX5 = 79,
PTTEXMTX6 = 82,
PTTEXMTX7 = 85,
PTTEXMTX8 = 88,
PTTEXMTX9 = 91,
PTTEXMTX10 = 94,
PTTEXMTX11 = 97,
PTTEXMTX12 = 100,
PTTEXMTX13 = 103,
PTTEXMTX14 = 106,
PTTEXMTX15 = 109,
PTTEXMTX16 = 112,
PTTEXMTX17 = 115,
PTTEXMTX18 = 118,
PTTEXMTX19 = 121,
PTIDENTITY = 125
};
enum DiffuseFn
{
DF_NONE = 0,
DF_SIGN,
DF_CLAMP
};
enum AttnFn
{
AF_SPEC = 0,
AF_SPOT = 1,
AF_NONE
};
enum Primitive
{
POINTS = 0xb8,
LINES = 0xa8,
LINESTRIP = 0xb0,
TRIANGLES = 0x90,
TRIANGLESTRIP = 0x98,
TRIANGLEFAN = 0xa0,
QUADS = 0x80
};
struct TexCoordGen
{
TexGenSrc m_src = TG_TEX0;
TexMtx m_mtx = IDENTITY;
/* Not actually part of GX, but a way to relate out-of-band
* texmtx animation parameters */
std::string m_gameFunction;
std::vector<atVec4f> m_gameArgs;
};
unsigned m_tcgCount = 0;
TexCoordGen m_tcgs[8];
unsigned m_texMtxCount = 0;
TexCoordGen* m_texMtxRefs[8];
struct TEVStage
{
TevOp m_cop = TEV_ADD;
TevOp m_aop = TEV_ADD;
TevColorArg m_color[4] = {CC_ZERO, CC_ZERO, CC_ZERO, CC_ZERO};
TevAlphaArg m_alpha[4] = {CA_ZERO, CA_ZERO, CA_ZERO, CA_ZERO};
TevKColorSel m_kColor = TEV_KCSEL_1;
TevKAlphaSel m_kAlpha = TEV_KASEL_1;
TevRegID m_cRegOut = TEVPREV;
TevRegID m_aRegOut = TEVPREV;
int m_lazyCInIdx = -1;
int m_lazyAInIdx = -1;
int m_lazyCOutIdx = -1;
int m_lazyAOutIdx = -1;
int m_texMapIdx = -1;
int m_texGenIdx = -1;
/* Convenience Links */
TEVStage* m_prev = nullptr;
TEVStage* m_next = nullptr;
/* Remember this for debugging */
SourceLocation m_loc;
};
unsigned m_tevCount = 0;
TEVStage m_tevs[16];
int getStageIdx(const TEVStage* stage) const
{
for (int i=0 ; i<int(m_tevCount) ; ++i)
if (&m_tevs[i] == stage)
return i;
return -1;
}
int m_cRegMask = 0;
int m_cRegLazy = 0;
int m_aRegMask = 0;
int m_aRegLazy = 0;
int pickCLazy(Diagnostics& diag, const SourceLocation& loc, int stageIdx) const
{
int regMask = m_cRegMask;
for (int i=stageIdx+1 ; i<int(m_tevCount) ; ++i)
{
const TEVStage& stage = m_tevs[i];
for (int c=0 ; c<4 ; ++c)
{
if (stage.m_color[c] == CC_C0)
regMask |= 1;
if (stage.m_color[c] == CC_C1)
regMask |= 2;
if (stage.m_color[c] == CC_C2)
regMask |= 4;
}
}
/* Allocate from back for compatibility with Retro's
* extended shader arithmetic use */
for (int i=2 ; i>=0 ; --i)
if (!(regMask & (1 << i)))
return i;
diag.reportBackendErr(loc, "TEV C Register overflow");
return -1;
}
int pickALazy(Diagnostics& diag, const SourceLocation& loc, int stageIdx) const
{
int regMask = m_aRegMask;
for (int i=stageIdx+1 ; i<int(m_tevCount) ; ++i)
{
const TEVStage& stage = m_tevs[i];
for (int c=0 ; c<4 ; ++c)
{
if (stage.m_color[c] == CC_A0 ||
stage.m_alpha[c] == CA_A0)
regMask |= 1;
if (stage.m_color[c] == CC_A1 ||
stage.m_alpha[c] == CA_A1)
regMask |= 2;
if (stage.m_color[c] == CC_A2 ||
stage.m_alpha[c] == CA_A2)
regMask |= 4;
}
}
/* Allocate from back for compatibility with Retro's
* extended shader arithmetic use */
for (int i=2 ; i>=0 ; --i)
if (!(regMask & (1 << i)))
return i;
diag.reportBackendErr(loc, "TEV A Register overflow");
return -1;
}
enum BlendFactor : uint16_t
{
BL_ZERO,
BL_ONE,
BL_SRCCLR,
BL_INVSRCCLR,
BL_SRCALPHA,
BL_INVSRCALPHA,
BL_DSTALPHA,
BL_INVDSTALPHA
};
BlendFactor m_blendSrc;
BlendFactor m_blendDst;
struct Color : Athena::io::DNA<Athena::BigEndian>
{
union
{
uint8_t color[4];
uint32_t num = 0;
};
Color() = default;
Color& operator=(const atVec4f& vec)
{
color[0] = uint8_t(std::min(std::max(vec.vec[0] * 255.f, 0.f), 255.f));
color[1] = uint8_t(std::min(std::max(vec.vec[1] * 255.f, 0.f), 255.f));
color[2] = uint8_t(std::min(std::max(vec.vec[2] * 255.f, 0.f), 255.f));
color[3] = uint8_t(std::min(std::max(vec.vec[3] * 255.f, 0.f), 255.f));
return *this;
}
Color& operator=(const atVec3f& vec)
{
color[0] = uint8_t(std::min(std::max(vec.vec[0] * 255.f, 0.f), 255.f));
color[1] = uint8_t(std::min(std::max(vec.vec[1] * 255.f, 0.f), 255.f));
color[2] = uint8_t(std::min(std::max(vec.vec[2] * 255.f, 0.f), 255.f));
color[3] = 0xff;
return *this;
}
Color& operator=(uint8_t val)
{
color[0] = val;
color[1] = val;
color[2] = val;
color[3] = val;
return *this;
}
Color(const atVec4f& vec) {*this = vec;}
Color(const atVec3f& vec) {*this = vec;}
Color(uint8_t val) {*this = val;}
bool operator==(const Color& other) const {return num == other.num;}
bool operator!=(const Color& other) const {return num != other.num;}
uint8_t operator[](size_t idx) const {return color[idx];}
uint8_t& operator[](size_t idx) {return color[idx];}
void read(Athena::io::IStreamReader& reader)
{reader.readUBytesToBuf(&num, 4);}
void write(Athena::io::IStreamWriter& writer) const
{writer.writeUBytes(reinterpret_cast<const atUint8*>(&num), 4);}
size_t binarySize(size_t __isz) const
{return __isz + 4;}
};
unsigned m_kcolorCount = 0;
Color m_kcolors[4];
int m_alphaTraceStage = -1;
bool operator==(const GX& other) const
{
if (m_tcgCount != other.m_tcgCount)
return false;
if (m_tevCount != other.m_tevCount)
return false;
if (m_blendSrc != other.m_blendSrc)
return false;
if (m_blendDst != other.m_blendDst)
return false;
if (m_kcolorCount != other.m_kcolorCount)
return false;
for (unsigned i=0 ; i<m_tcgCount ; ++i)
{
const TexCoordGen& a = m_tcgs[i];
const TexCoordGen& b = other.m_tcgs[i];
if (a.m_src != b.m_src)
return false;
if (a.m_mtx != b.m_mtx)
return false;
}
for (unsigned i=0 ; i<m_tevCount ; ++i)
{
const TEVStage& a = m_tevs[i];
const TEVStage& b = other.m_tevs[i];
for (unsigned j=0 ; j<4 ; ++j)
if (a.m_color[j] != b.m_color[j])
return false;
for (unsigned j=0 ; j<4 ; ++j)
if (a.m_alpha[j] != b.m_alpha[j])
return false;
if (a.m_cop != b.m_cop)
return false;
if (a.m_aop != b.m_aop)
return false;
if (a.m_kColor != b.m_kColor)
return false;
if (a.m_kAlpha != b.m_kAlpha)
return false;
if (a.m_cRegOut != b.m_cRegOut)
return false;
if (a.m_aRegOut != b.m_aRegOut)
return false;
if (a.m_texMapIdx != b.m_texMapIdx)
return false;
if (a.m_texGenIdx != b.m_texGenIdx)
return false;
}
for (unsigned i=0 ; i<m_kcolorCount ; ++i)
{
const Color& a = m_kcolors[i];
const Color& b = other.m_kcolors[i];
if (a.num != b.num)
return false;
}
return true;
}
bool operator!=(const GX& other) const
{
return !(*this == other);
}
void reset(const IR& ir, Diagnostics& diag);
private:
struct TraceResult
{
enum class Type
{
Invalid,
TEVStage,
TEVColorArg,
TEVAlphaArg,
TEVKColorSel,
TEVKAlphaSel
} type;
union
{
GX::TEVStage* tevStage;
GX::TevColorArg tevColorArg;
GX::TevAlphaArg tevAlphaArg;
GX::TevKColorSel tevKColorSel;
GX::TevKAlphaSel tevKAlphaSel;
};
TraceResult() : type(Type::Invalid) {}
TraceResult(GX::TEVStage* stage) : type(Type::TEVStage), tevStage(stage) {}
TraceResult(GX::TevColorArg arg) : type(Type::TEVColorArg), tevColorArg(arg) {}
TraceResult(GX::TevAlphaArg arg) : type(Type::TEVAlphaArg), tevAlphaArg(arg) {}
TraceResult(GX::TevKColorSel arg) : type(Type::TEVKColorSel), tevKColorSel(arg) {}
TraceResult(GX::TevKAlphaSel arg) : type(Type::TEVKAlphaSel), tevKAlphaSel(arg) {}
};
unsigned addKColor(Diagnostics& diag, const SourceLocation& loc, const Color& color);
unsigned addKAlpha(Diagnostics& diag, const SourceLocation& loc, float alpha);
unsigned addTexCoordGen(Diagnostics& diag, const SourceLocation& loc,
TexGenSrc src, TexMtx mtx);
TEVStage& addTEVStage(Diagnostics& diag, const SourceLocation& loc);
TraceResult RecursiveTraceColor(const IR& ir, Diagnostics& diag,
const IR::Instruction& inst,
bool swizzleAlpha=false);
TraceResult RecursiveTraceAlpha(const IR& ir, Diagnostics& diag,
const IR::Instruction& inst);
unsigned RecursiveTraceTexGen(const IR& ir, Diagnostics& diag,
const IR::Instruction& inst,
TexMtx mtx);
};
}
}
#endif // HECLBACKEND_GX_HPP
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