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https://github.com/AxioDL/metaforce.git
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550 lines
21 KiB
C++
550 lines
21 KiB
C++
#include "HECL/Backend/GX.hpp"
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#include <map>
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namespace HECL
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{
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namespace Backend
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{
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unsigned GX::addKColor(Diagnostics& diag, const SourceLocation& loc, const Color& color)
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{
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for (unsigned i=0 ; i<m_kcolorCount ; ++i)
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if (m_kcolors[i] == color)
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return i;
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if (m_kcolorCount >= 4)
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diag.reportBackendErr(loc, "GX KColor overflow");
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m_kcolors[m_kcolorCount] = color;
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return m_kcolorCount++;
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}
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unsigned GX::addKAlpha(Diagnostics& diag, const SourceLocation& loc, float alpha)
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{
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uint8_t ai = uint8_t(std::min(std::max(alpha * 255.f, 0.f), 255.f));
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for (unsigned i=0 ; i<m_kcolorCount ; ++i)
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{
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if (m_kcolors[i].color[3] == ai)
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return i;
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else if (m_kcolors[i].color[3] == 0)
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{
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m_kcolors[i].color[3] = ai;
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return i;
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}
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}
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if (m_kcolorCount >= 4)
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diag.reportBackendErr(loc, "GX KColor overflow");
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m_kcolors[m_kcolorCount] = ai;
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return m_kcolorCount++;
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}
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unsigned GX::addTexCoordGen(Diagnostics& diag, const SourceLocation& loc,
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TexGenSrc src, TexMtx mtx)
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{
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for (unsigned i=0 ; i<m_tcgCount ; ++i)
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{
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TexCoordGen& tcg = m_tcgs[i];
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if (tcg.m_src == src && tcg.m_mtx == mtx)
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return i;
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}
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if (m_tcgCount >= 8)
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diag.reportBackendErr(loc, "GX TexCoordGen overflow");
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GX::TexCoordGen& newTcg = m_tcgs[m_tcgCount];
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newTcg.m_src = src;
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newTcg.m_mtx = mtx;
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return m_tcgCount++;
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}
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GX::TEVStage& GX::addTEVStage(Diagnostics& diag, const SourceLocation& loc)
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{
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if (m_tevCount >= 16)
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diag.reportBackendErr(loc, "GX TEV stage overflow");
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GX::TEVStage& newTEV = m_tevs[m_tevCount];
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if (m_tevCount)
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{
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newTEV.m_prev = &m_tevs[m_tevCount-1];
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newTEV.m_prev->m_next = &newTEV;
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}
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++m_tevCount;
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return newTEV;
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}
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unsigned GX::RecursiveTraceTexGen(const IR& ir, Diagnostics& diag, const IR::Instruction& inst, TexMtx mtx)
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{
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if (inst.m_op != IR::OpCall)
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diag.reportBackendErr(inst.m_loc, "TexCoordGen resolution requires function");
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const std::string& tcgName = inst.m_call.m_name;
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if (!tcgName.compare("UV"))
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{
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if (inst.getChildCount() < 1)
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diag.reportBackendErr(inst.m_loc, "TexCoordGen UV(layerIdx) requires one argument");
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const IR::Instruction& idxInst = inst.getChildInst(ir, 0);
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const atVec4f& idxImm = idxInst.getImmVec();
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return addTexCoordGen(diag, inst.m_loc, TexGenSrc(TG_TEX0 + unsigned(idxImm.vec[0])), mtx);
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}
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else if (!tcgName.compare("Normal"))
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return addTexCoordGen(diag, inst.m_loc, TG_NRM, mtx);
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else if (!tcgName.compare("View"))
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return addTexCoordGen(diag, inst.m_loc, TG_POS, mtx);
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/* Otherwise treat as game-specific function */
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const IR::Instruction& tcgSrcInst = inst.getChildInst(ir, 0);
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unsigned idx = RecursiveTraceTexGen(ir, diag, tcgSrcInst, TexMtx(TEXMTX0 + m_texMtxCount * 3));
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GX::TexCoordGen& tcg = m_tcgs[idx];
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m_texMtxRefs[m_texMtxCount] = &tcg;
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++m_texMtxCount;
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tcg.m_gameFunction = tcgName;
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tcg.m_gameArgs.clear();
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for (ssize_t i=1 ; i<inst.getChildCount() ; ++i)
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{
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const IR::Instruction& ci = inst.getChildInst(ir, i);
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tcg.m_gameArgs.push_back(ci.getImmVec());
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}
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return idx;
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}
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GX::TraceResult GX::RecursiveTraceColor(const IR& ir, Diagnostics& diag, const IR::Instruction& inst)
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{
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switch (inst.m_op)
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{
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case IR::OpCall:
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{
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const std::string& name = inst.m_call.m_name;
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if (!name.compare("Texture"))
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{
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TEVStage& newStage = addTEVStage(diag, inst.m_loc);
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if (inst.getChildCount() < 2)
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diag.reportBackendErr(inst.m_loc, "Texture(map, texgen) requires 2 arguments");
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const IR::Instruction& mapInst = inst.getChildInst(ir, 0);
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const atVec4f& mapImm = mapInst.getImmVec();
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newStage.m_texMapIdx = unsigned(mapImm.vec[0]);
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newStage.m_color[0] = CC_TEXC;
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const IR::Instruction& tcgInst = inst.getChildInst(ir, 1);
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newStage.m_texGenIdx = RecursiveTraceTexGen(ir, diag, tcgInst, IDENTITY);
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return TraceResult(&newStage);
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}
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else if (!name.compare("ColorReg"))
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{
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const IR::Instruction& idxInst = inst.getChildInst(ir, 0);
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unsigned idx = unsigned(idxInst.getImmVec().vec[0]);
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return TraceResult(GX::TevColorArg(CC_C0 + idx * 2));
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}
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else if (!name.compare("Lighting"))
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{
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return TraceResult(CC_RASC);
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}
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else
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diag.reportBackendErr(inst.m_loc, "GX backend unable to interpret '%s'", name.c_str());
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break;
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}
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case IR::OpLoadImm:
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{
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const atVec4f& vec = inst.m_loadImm.m_immVec;
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if (vec.vec[0] == 0.f && vec.vec[1] == 0.f && vec.vec[2] == 0.f)
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return TraceResult(CC_ZERO);
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else if (vec.vec[0] == 1.f && vec.vec[1] == 1.f && vec.vec[2] == 1.f)
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return TraceResult(CC_ONE);
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unsigned idx = addKColor(diag, inst.m_loc, vec);
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return TraceResult(TevKColorSel(TEV_KCSEL_K0 + idx));
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}
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case IR::OpArithmetic:
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{
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ArithmeticOp op = inst.m_arithmetic.m_op;
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const IR::Instruction& aInst = inst.getChildInst(ir, 0);
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TraceResult aTrace = RecursiveTraceColor(ir, diag, aInst);
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const IR::Instruction& bInst = inst.getChildInst(ir, 1);
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TraceResult bTrace = RecursiveTraceColor(ir, diag, bInst);
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switch (op)
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{
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case ArithmeticOp::ArithmeticOpAdd:
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{
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if (aTrace.type == TraceResult::TraceTEVStage &&
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bTrace.type == TraceResult::TraceTEVStage)
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{
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TEVStage* a = aTrace.tevStage;
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TEVStage* b = bTrace.tevStage;
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if (b->m_prev != a)
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diag.reportBackendErr(inst.m_loc, "TEV stages must have monotonic progression");
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b->m_color[3] = CC_CPREV;
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return TraceResult(b);
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}
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break;
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}
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case ArithmeticOp::ArithmeticOpSubtract:
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{
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if (aTrace.type == TraceResult::TraceTEVStage &&
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bTrace.type == TraceResult::TraceTEVStage)
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{
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TEVStage* a = aTrace.tevStage;
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TEVStage* b = bTrace.tevStage;
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if (b->m_prev != a)
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diag.reportBackendErr(inst.m_loc, "TEV stages must have monotonic progression");
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b->m_op = TEV_SUB;
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b->m_color[3] = CC_CPREV;
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return TraceResult(b);
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}
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break;
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}
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case ArithmeticOp::ArithmeticOpMultiply:
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{
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if (aTrace.type == TraceResult::TraceTEVStage &&
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bTrace.type == TraceResult::TraceTEVStage)
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{
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TEVStage* a = aTrace.tevStage;
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TEVStage* b = bTrace.tevStage;
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if (b->m_prev != a)
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diag.reportBackendErr(inst.m_loc, "TEV stages must have monotonic progression");
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if (a->m_color[2] != CC_ZERO)
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diag.reportBackendErr(inst.m_loc, "unable to modify TEV stage for multiply combine");
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b->m_color[1] = b->m_color[0];
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b->m_color[0] = CC_ZERO;
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b->m_color[2] = CC_CPREV;
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b->m_color[3] = CC_ZERO;
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return TraceResult(b);
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}
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else if (aTrace.type == TraceResult::TraceTEVColorArg &&
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bTrace.type == TraceResult::TraceTEVColorArg)
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{
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TEVStage& stage = addTEVStage(diag, inst.m_loc);
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stage.m_color[1] = aTrace.tevColorArg;
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stage.m_color[2] = bTrace.tevColorArg;
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return TraceResult(&stage);
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}
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else if (aTrace.type == TraceResult::TraceTEVStage &&
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bTrace.type == TraceResult::TraceTEVColorArg)
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{
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TEVStage* a = aTrace.tevStage;
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if (a->m_color[1] != CC_ZERO)
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diag.reportBackendErr(inst.m_loc, "unable to modify TEV stage for multiply combine");
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a->m_color[1] = a->m_color[0];
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a->m_color[0] = CC_ZERO;
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a->m_color[2] = bTrace.tevColorArg;
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return TraceResult(a);
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}
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else if (aTrace.type == TraceResult::TraceTEVColorArg &&
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bTrace.type == TraceResult::TraceTEVStage)
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{
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TEVStage* b = bTrace.tevStage;
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if (b->m_color[1] != CC_ZERO)
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diag.reportBackendErr(inst.m_loc, "unable to modify TEV stage for multiply combine");
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b->m_color[1] = b->m_color[0];
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b->m_color[0] = CC_ZERO;
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b->m_color[2] = bTrace.tevColorArg;
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return TraceResult(b);
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}
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else if (aTrace.type == TraceResult::TraceTEVStage &&
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bTrace.type == TraceResult::TraceTEVKColorSel)
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{
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TEVStage* a = aTrace.tevStage;
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if (a->m_kColor != TEV_KCSEL_1)
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diag.reportBackendErr(inst.m_loc, "unable to modify TEV stage for KColor combine");
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if (a->m_color[1] != CC_ZERO)
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diag.reportBackendErr(inst.m_loc, "unable to modify TEV stage for multiply combine");
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a->m_color[1] = a->m_color[0];
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a->m_color[0] = CC_ZERO;
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a->m_color[2] = CC_KONST;
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a->m_kColor = bTrace.tevKColorSel;
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return TraceResult(a);
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}
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else if (aTrace.type == TraceResult::TraceTEVKColorSel &&
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bTrace.type == TraceResult::TraceTEVStage)
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{
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TEVStage* b = bTrace.tevStage;
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if (b->m_kColor != TEV_KCSEL_1)
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diag.reportBackendErr(inst.m_loc, "unable to modify TEV stage for KColor combine");
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if (b->m_color[1] != CC_ZERO)
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diag.reportBackendErr(inst.m_loc, "unable to modify TEV stage for multiply combine");
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b->m_color[1] = b->m_color[0];
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b->m_color[0] = CC_ZERO;
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b->m_color[2] = CC_KONST;
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b->m_kColor = aTrace.tevKColorSel;
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return TraceResult(b);
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}
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break;
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}
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default:
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diag.reportBackendErr(inst.m_loc, "invalid arithmetic op");
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}
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diag.reportBackendErr(inst.m_loc, "unable to convert arithmetic to TEV stage");
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}
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case IR::OpSwizzle:
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{
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if (inst.m_swizzle.m_idxs[0] == 3 && inst.m_swizzle.m_idxs[1] == -1 &&
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inst.m_swizzle.m_idxs[2] == -1 && inst.m_swizzle.m_idxs[3] == -1)
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{
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const IR::Instruction& cInst = inst.getChildInst(ir, 0);
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if (cInst.m_op != IR::OpCall || cInst.m_call.m_name.compare("Texture"))
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diag.reportBackendErr(inst.m_loc, "only Texture() accepted for alpha swizzle");
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return TraceResult(CC_TEXA);
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}
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else
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diag.reportBackendErr(inst.m_loc, "only alpha extract may be performed with swizzle operation");
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}
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default:
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diag.reportBackendErr(inst.m_loc, "invalid color op");
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}
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return TraceResult();
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}
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GX::TraceResult GX::RecursiveTraceAlpha(const IR& ir, Diagnostics& diag, const IR::Instruction& inst)
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{
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switch (inst.m_op)
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{
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case IR::OpCall:
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{
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const std::string& name = inst.m_call.m_name;
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if (!name.compare("Texture"))
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{
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if (inst.getChildCount() < 2)
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diag.reportBackendErr(inst.m_loc, "Texture(map, texgen) requires 2 arguments");
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const IR::Instruction& mapInst = inst.getChildInst(ir, 0);
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const atVec4f& mapImm = mapInst.getImmVec();
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unsigned mapIdx = unsigned(mapImm.vec[0]);
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int foundStage = -1;
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for (int i=0 ; i<m_tevCount ; ++i)
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{
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TEVStage& testStage = m_tevs[i];
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if (testStage.m_texMapIdx == mapIdx && i > m_alphaTraceStage)
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{
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foundStage = i;
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break;
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}
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}
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if (foundStage >= 0)
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{
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m_alphaTraceStage = foundStage;
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TEVStage& stage = m_tevs[foundStage];
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stage.m_alpha[0] = CA_TEXA;
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return TraceResult(&stage);
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}
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TEVStage& newStage = addTEVStage(diag, inst.m_loc);
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newStage.m_color[3] = CC_CPREV;
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newStage.m_texMapIdx = mapIdx;
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newStage.m_alpha[0] = CA_TEXA;
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const IR::Instruction& tcgInst = inst.getChildInst(ir, 1);
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newStage.m_texGenIdx = RecursiveTraceTexGen(ir, diag, tcgInst, IDENTITY);
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return TraceResult(&newStage);
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}
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else if (!name.compare("ColorReg"))
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{
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const IR::Instruction& idxInst = inst.getChildInst(ir, 0);
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unsigned idx = unsigned(idxInst.getImmVec().vec[0]);
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return TraceResult(GX::TevAlphaArg(CA_A0 + idx));
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}
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else if (!name.compare("Lighting"))
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{
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return TraceResult(CA_RASA);
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}
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else
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diag.reportBackendErr(inst.m_loc, "GX backend unable to interpret '%s'", name.c_str());
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break;
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}
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case IR::OpLoadImm:
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{
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const atVec4f& vec = inst.m_loadImm.m_immVec;
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if (vec.vec[0] == 0.f)
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return TraceResult(CA_ZERO);
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unsigned idx = addKAlpha(diag, inst.m_loc, vec.vec[0]);
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return TraceResult(TevKAlphaSel(TEV_KASEL_K0_A + idx));
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}
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case IR::OpArithmetic:
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{
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ArithmeticOp op = inst.m_arithmetic.m_op;
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const IR::Instruction& aInst = inst.getChildInst(ir, 0);
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TraceResult aTrace = RecursiveTraceAlpha(ir, diag, aInst);
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const IR::Instruction& bInst = inst.getChildInst(ir, 1);
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TraceResult bTrace = RecursiveTraceAlpha(ir, diag, bInst);
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switch (op)
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{
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case ArithmeticOp::ArithmeticOpAdd:
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{
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if (aTrace.type == TraceResult::TraceTEVStage &&
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bTrace.type == TraceResult::TraceTEVStage)
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{
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TEVStage* a = aTrace.tevStage;
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TEVStage* b = bTrace.tevStage;
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if (b->m_prev != a)
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diag.reportBackendErr(inst.m_loc, "TEV stages must have monotonic progression");
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b->m_alpha[3] = CA_APREV;
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return TraceResult(b);
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}
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break;
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}
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case ArithmeticOp::ArithmeticOpSubtract:
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{
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if (aTrace.type == TraceResult::TraceTEVStage &&
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bTrace.type == TraceResult::TraceTEVStage)
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{
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TEVStage* a = aTrace.tevStage;
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TEVStage* b = bTrace.tevStage;
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if (b->m_prev != a)
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diag.reportBackendErr(inst.m_loc, "TEV stages must have monotonic progression");
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if (b->m_op != TEV_SUB)
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diag.reportBackendErr(inst.m_loc, "unable to integrate alpha subtraction into stage chain");
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b->m_alpha[3] = CA_APREV;
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return TraceResult(b);
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}
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break;
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}
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case ArithmeticOp::ArithmeticOpMultiply:
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{
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if (aTrace.type == TraceResult::TraceTEVStage &&
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bTrace.type == TraceResult::TraceTEVStage)
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{
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TEVStage* a = aTrace.tevStage;
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TEVStage* b = bTrace.tevStage;
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if (b->m_prev != a)
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diag.reportBackendErr(inst.m_loc, "TEV stages must have monotonic progression");
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if (a->m_alpha[2] != CA_ZERO)
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diag.reportBackendErr(inst.m_loc, "unable to modify TEV stage for multiply combine");
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b->m_alpha[1] = b->m_alpha[0];
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b->m_alpha[0] = CA_ZERO;
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b->m_alpha[2] = CA_APREV;
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b->m_alpha[3] = CA_ZERO;
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return TraceResult(b);
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}
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else if (aTrace.type == TraceResult::TraceTEVAlphaArg &&
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bTrace.type == TraceResult::TraceTEVAlphaArg)
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{
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TEVStage& stage = addTEVStage(diag, inst.m_loc);
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stage.m_color[3] = CC_CPREV;
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stage.m_alpha[1] = aTrace.tevAlphaArg;
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stage.m_alpha[2] = bTrace.tevAlphaArg;
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return TraceResult(&stage);
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}
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else if (aTrace.type == TraceResult::TraceTEVStage &&
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bTrace.type == TraceResult::TraceTEVColorArg)
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{
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TEVStage* a = aTrace.tevStage;
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if (a->m_alpha[1] != CA_ZERO)
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diag.reportBackendErr(inst.m_loc, "unable to modify TEV stage for multiply combine");
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a->m_alpha[1] = a->m_alpha[0];
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a->m_alpha[0] = CA_ZERO;
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a->m_alpha[2] = bTrace.tevAlphaArg;
|
|
return TraceResult(a);
|
|
}
|
|
else if (aTrace.type == TraceResult::TraceTEVColorArg &&
|
|
bTrace.type == TraceResult::TraceTEVStage)
|
|
{
|
|
TEVStage* b = bTrace.tevStage;
|
|
if (b->m_alpha[1] != CA_ZERO)
|
|
diag.reportBackendErr(inst.m_loc, "unable to modify TEV stage for multiply combine");
|
|
b->m_alpha[1] = b->m_alpha[0];
|
|
b->m_alpha[0] = CA_ZERO;
|
|
b->m_alpha[2] = bTrace.tevAlphaArg;
|
|
return TraceResult(b);
|
|
}
|
|
else if (aTrace.type == TraceResult::TraceTEVStage &&
|
|
bTrace.type == TraceResult::TraceTEVKColorSel)
|
|
{
|
|
TEVStage* a = aTrace.tevStage;
|
|
if (a->m_kAlpha != TEV_KASEL_1)
|
|
diag.reportBackendErr(inst.m_loc, "unable to modify TEV stage for KAlpha combine");
|
|
if (a->m_alpha[1] != CA_ZERO)
|
|
diag.reportBackendErr(inst.m_loc, "unable to modify TEV stage for multiply combine");
|
|
a->m_alpha[1] = a->m_alpha[0];
|
|
a->m_alpha[0] = CA_ZERO;
|
|
a->m_alpha[2] = CA_KONST;
|
|
a->m_kAlpha = bTrace.tevKAlphaSel;
|
|
return TraceResult(a);
|
|
}
|
|
else if (aTrace.type == TraceResult::TraceTEVKColorSel &&
|
|
bTrace.type == TraceResult::TraceTEVStage)
|
|
{
|
|
TEVStage* b = bTrace.tevStage;
|
|
if (b->m_kAlpha != TEV_KASEL_1)
|
|
diag.reportBackendErr(inst.m_loc, "unable to modify TEV stage for KAlpha combine");
|
|
if (b->m_alpha[1] != CA_ZERO)
|
|
diag.reportBackendErr(inst.m_loc, "unable to modify TEV stage for multiply combine");
|
|
b->m_alpha[1] = b->m_alpha[0];
|
|
b->m_alpha[0] = CA_ZERO;
|
|
b->m_alpha[2] = CA_KONST;
|
|
b->m_kAlpha = aTrace.tevKAlphaSel;
|
|
return TraceResult(b);
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
diag.reportBackendErr(inst.m_loc, "invalid arithmetic op");
|
|
}
|
|
|
|
diag.reportBackendErr(inst.m_loc, "unable to convert arithmetic to TEV stage");
|
|
}
|
|
default:
|
|
diag.reportBackendErr(inst.m_loc, "invalid alpha op");
|
|
}
|
|
|
|
return TraceResult();
|
|
}
|
|
|
|
void GX::reset(const IR& ir, Diagnostics& diag)
|
|
{
|
|
m_tevCount = 0;
|
|
m_tcgCount = 0;
|
|
m_texMtxCount = 0;
|
|
m_kcolorCount = 0;
|
|
m_alphaTraceStage = -1;
|
|
|
|
/* Final instruction is the root call by hecl convention */
|
|
const IR::Instruction& rootCall = ir.m_instructions.back();
|
|
bool doAlpha = false;
|
|
if (!rootCall.m_call.m_name.compare("HECLOpaque"))
|
|
{
|
|
m_blendSrc = BL_ONE;
|
|
m_blendDst = BL_ZERO;
|
|
}
|
|
else if (!rootCall.m_call.m_name.compare("HECLAlpha"))
|
|
{
|
|
m_blendSrc = BL_SRCALPHA;
|
|
m_blendDst = BL_INVSRCALPHA;
|
|
doAlpha = true;
|
|
}
|
|
else if (!rootCall.m_call.m_name.compare("HECLAdditive"))
|
|
{
|
|
m_blendSrc = BL_SRCALPHA;
|
|
m_blendDst = BL_ONE;
|
|
doAlpha = true;
|
|
}
|
|
else
|
|
{
|
|
diag.reportBackendErr(rootCall.m_loc, "GX backend doesn't handle '%s' root",
|
|
rootCall.m_call.m_name.c_str());
|
|
return;
|
|
}
|
|
|
|
/* Follow Color Chain */
|
|
const IR::Instruction& colorRoot =
|
|
ir.m_instructions.at(rootCall.m_call.m_argInstIdxs.at(0));
|
|
RecursiveTraceColor(ir, diag, colorRoot);
|
|
|
|
/* Follow Alpha Chain */
|
|
if (doAlpha)
|
|
{
|
|
const IR::Instruction& alphaRoot =
|
|
ir.m_instructions.at(rootCall.m_call.m_argInstIdxs.at(1));
|
|
RecursiveTraceAlpha(ir, diag, alphaRoot);
|
|
|
|
/* Ensure Alpha reaches end of chain */
|
|
if (m_alphaTraceStage >= 0)
|
|
for (int i=m_alphaTraceStage+1 ; i<m_tevCount ; ++i)
|
|
m_tevs[i].m_alpha[3] = CA_APREV;
|
|
}
|
|
}
|
|
|
|
}
|
|
}
|