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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/Types.hpp>
#include <stdint.h>
#include <stdlib.h>
#include <algorithm>
namespace HECL
{
namespace Backend
{
struct GX : IBackend
{
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 TevRegID
{
TEVPREV = 0,
TEVREG0 = 1,
TEVREG1 = 2,
TEVREG2 = 3
};
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 */
};
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 */
};
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
};
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_op = 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_regOut = TEVPREV;
int m_texMapIdx = -1;
int m_texGenIdx = -1;
/* Convenience Links */
TEVStage* m_prev = nullptr;
TEVStage* m_next = nullptr;
};
unsigned m_tevCount = 0;
TEVStage m_tevs[16];
enum BlendFactor
{
BL_ZERO,
BL_ONE,
BL_SRCCLR,
BL_INVSRCCLR,
BL_SRCALPHA,
BL_INVSRCALPHA,
BL_DSTALPHA,
BL_INVDSTALPHA
};
BlendFactor m_blendSrc;
BlendFactor m_blendDst;
struct Color
{
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] = 0;
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(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];}
};
unsigned m_kcolorCount = 0;
Color m_kcolors[4];
int m_alphaTraceStage = -1;
void reset(const IR& ir, Diagnostics& diag);
private:
struct TraceResult
{
enum
{
TraceInvalid,
TraceTEVStage,
TraceTEVColorArg,
TraceTEVAlphaArg,
TraceTEVKColorSel,
TraceTEVKAlphaSel
} type;
union
{
GX::TEVStage* tevStage;
GX::TevColorArg tevColorArg;
GX::TevAlphaArg tevAlphaArg;
GX::TevKColorSel tevKColorSel;
GX::TevKAlphaSel tevKAlphaSel;
};
TraceResult() : type(TraceInvalid) {}
TraceResult(GX::TEVStage* stage) : type(TraceTEVStage), tevStage(stage) {}
TraceResult(GX::TevColorArg arg) : type(TraceTEVColorArg), tevColorArg(arg) {}
TraceResult(GX::TevAlphaArg arg) : type(TraceTEVAlphaArg), tevAlphaArg(arg) {}
TraceResult(GX::TevKColorSel arg) : type(TraceTEVKColorSel), tevKColorSel(arg) {}
TraceResult(GX::TevKAlphaSel arg) : type(TraceTEVKAlphaSel), 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);
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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