mirror of https://github.com/AxioDL/metaforce.git
333 lines
11 KiB
C++
333 lines
11 KiB
C++
#include "hecl/Backend/ProgrammableCommon.hpp"
|
|
#include <map>
|
|
|
|
namespace hecl
|
|
{
|
|
namespace Backend
|
|
{
|
|
|
|
unsigned ProgrammableCommon::addTexCoordGen(TexGenSrc src, int uvIdx, int mtx, bool normalize)
|
|
{
|
|
for (unsigned i=0 ; i<m_tcgs.size() ; ++i)
|
|
{
|
|
TexCoordGen& tcg = m_tcgs[i];
|
|
if (tcg.m_src == src && tcg.m_uvIdx == uvIdx && tcg.m_mtx == mtx && tcg.m_norm == normalize)
|
|
return i;
|
|
}
|
|
m_tcgs.emplace_back();
|
|
TexCoordGen& newTcg = m_tcgs.back();
|
|
newTcg.m_src = src;
|
|
newTcg.m_uvIdx = uvIdx;
|
|
newTcg.m_mtx = mtx;
|
|
newTcg.m_norm = normalize;
|
|
return m_tcgs.size() - 1;
|
|
}
|
|
|
|
unsigned ProgrammableCommon::addTexSampling(unsigned mapIdx, unsigned tcgIdx)
|
|
{
|
|
for (unsigned i=0 ; i<m_texSamplings.size() ; ++i)
|
|
{
|
|
TexSampling& samp = m_texSamplings[i];
|
|
if (samp.mapIdx == mapIdx && samp.tcgIdx == tcgIdx)
|
|
return i;
|
|
}
|
|
m_texSamplings.emplace_back();
|
|
TexSampling& samp = m_texSamplings.back();
|
|
samp.mapIdx = mapIdx;
|
|
samp.tcgIdx = tcgIdx;
|
|
if (m_texMapEnd < mapIdx + 1)
|
|
m_texMapEnd = mapIdx + 1;
|
|
return m_texSamplings.size() - 1;
|
|
}
|
|
|
|
unsigned ProgrammableCommon::RecursiveTraceTexGen(const IR& ir, Diagnostics& diag,
|
|
const IR::Instruction& inst, int mtx, bool normalize)
|
|
{
|
|
if (inst.m_op != IR::OpType::Call)
|
|
diag.reportBackendErr(inst.m_loc, "TexCoordGen resolution requires function");
|
|
|
|
const std::string& tcgName = inst.m_call.m_name;
|
|
if (!tcgName.compare("UV"))
|
|
{
|
|
if (inst.getChildCount() < 1)
|
|
diag.reportBackendErr(inst.m_loc, "TexCoordGen UV(layerIdx) requires one argument");
|
|
const IR::Instruction& idxInst = inst.getChildInst(ir, 0);
|
|
const atVec4f& idxImm = idxInst.getImmVec();
|
|
return addTexCoordGen(TexGenSrc::UV, idxImm.vec[0], mtx, normalize);
|
|
}
|
|
else if (!tcgName.compare("Normal"))
|
|
return addTexCoordGen(TexGenSrc::Normal, -1, mtx, normalize);
|
|
else if (!tcgName.compare("View"))
|
|
return addTexCoordGen(TexGenSrc::Position, -1, mtx, normalize);
|
|
|
|
/* Otherwise treat as game-specific function */
|
|
const IR::Instruction& tcgSrcInst = inst.getChildInst(ir, 0);
|
|
unsigned idx = RecursiveTraceTexGen(ir, diag, tcgSrcInst, m_texMtxRefs.size(),
|
|
normalize || tcgName.back() == 'N');
|
|
TexCoordGen& tcg = m_tcgs[idx];
|
|
m_texMtxRefs.push_back(idx);
|
|
tcg.m_gameFunction = tcgName;
|
|
tcg.m_gameArgs.clear();
|
|
for (int i=1 ; i<inst.getChildCount() ; ++i)
|
|
{
|
|
const IR::Instruction& ci = inst.getChildInst(ir, i);
|
|
tcg.m_gameArgs.push_back(ci.getImmVec());
|
|
}
|
|
return idx;
|
|
}
|
|
|
|
std::string ProgrammableCommon::RecursiveTraceColor(const IR& ir, Diagnostics& diag,
|
|
const IR::Instruction& inst, bool toSwizzle)
|
|
{
|
|
switch (inst.m_op)
|
|
{
|
|
case IR::OpType::Call:
|
|
{
|
|
const std::string& name = inst.m_call.m_name;
|
|
bool normalize = false;
|
|
if (!name.compare("Texture") || (normalize = true && !name.compare("TextureN")))
|
|
{
|
|
if (inst.getChildCount() < 2)
|
|
diag.reportBackendErr(inst.m_loc, "Texture(map, texgen) requires 2 arguments");
|
|
|
|
const IR::Instruction& mapInst = inst.getChildInst(ir, 0);
|
|
const atVec4f& mapImm = mapInst.getImmVec();
|
|
unsigned mapIdx = unsigned(mapImm.vec[0]);
|
|
|
|
const IR::Instruction& tcgInst = inst.getChildInst(ir, 1);
|
|
unsigned texGenIdx = RecursiveTraceTexGen(ir, diag, tcgInst, -1, normalize);
|
|
|
|
return toSwizzle ? EmitSamplingUseRaw(addTexSampling(mapIdx, texGenIdx)) :
|
|
EmitSamplingUseRGB(addTexSampling(mapIdx, texGenIdx));
|
|
}
|
|
else if (!name.compare("ColorReg"))
|
|
{
|
|
const IR::Instruction& idxInst = inst.getChildInst(ir, 0);
|
|
unsigned idx = unsigned(idxInst.getImmVec().vec[0]);
|
|
return EmitColorRegUse(idx);
|
|
}
|
|
else if (!name.compare("Lighting"))
|
|
{
|
|
m_lighting = true;
|
|
return toSwizzle ? EmitLightingRaw() : EmitLightingRGB();
|
|
}
|
|
else
|
|
diag.reportBackendErr(inst.m_loc, "unable to interpret '%s'", name.c_str());
|
|
break;
|
|
}
|
|
case IR::OpType::LoadImm:
|
|
{
|
|
const atVec4f& vec = inst.m_loadImm.m_immVec;
|
|
return EmitVec3(vec);
|
|
}
|
|
case IR::OpType::Arithmetic:
|
|
{
|
|
ArithmeticOp op = inst.m_arithmetic.m_op;
|
|
const IR::Instruction& aInst = inst.getChildInst(ir, 0);
|
|
const IR::Instruction& bInst = inst.getChildInst(ir, 1);
|
|
std::string aTrace = RecursiveTraceColor(ir, diag, aInst, false);
|
|
std::string bTrace = RecursiveTraceColor(ir, diag, bInst, false);
|
|
|
|
switch (op)
|
|
{
|
|
case ArithmeticOp::Add:
|
|
{
|
|
return EmitAdd(aTrace, bTrace);
|
|
}
|
|
case ArithmeticOp::Subtract:
|
|
{
|
|
return EmitSub(aTrace, bTrace);
|
|
}
|
|
case ArithmeticOp::Multiply:
|
|
{
|
|
return EmitMult(aTrace, bTrace);
|
|
}
|
|
case ArithmeticOp::Divide:
|
|
{
|
|
return EmitDiv(aTrace, bTrace);
|
|
}
|
|
default:
|
|
diag.reportBackendErr(inst.m_loc, "invalid arithmetic op");
|
|
}
|
|
}
|
|
case IR::OpType::Swizzle:
|
|
{
|
|
const IR::Instruction& aInst = inst.getChildInst(ir, 0);
|
|
std::string aTrace = RecursiveTraceColor(ir, diag, aInst, true);
|
|
return EmitSwizzle3(diag, inst.m_loc, aTrace, inst.m_swizzle.m_idxs);
|
|
}
|
|
default:
|
|
diag.reportBackendErr(inst.m_loc, "invalid color op");
|
|
}
|
|
|
|
return std::string();
|
|
}
|
|
|
|
std::string ProgrammableCommon::RecursiveTraceAlpha(const IR& ir, Diagnostics& diag,
|
|
const IR::Instruction& inst, bool toSwizzle)
|
|
{
|
|
switch (inst.m_op)
|
|
{
|
|
case IR::OpType::Call:
|
|
{
|
|
const std::string& name = inst.m_call.m_name;
|
|
bool normalize = false;
|
|
if (!name.compare("Texture") || (normalize = true && !name.compare("TextureN")))
|
|
{
|
|
if (inst.getChildCount() < 2)
|
|
diag.reportBackendErr(inst.m_loc, "Texture(map, texgen) requires 2 arguments");
|
|
|
|
const IR::Instruction& mapInst = inst.getChildInst(ir, 0);
|
|
const atVec4f& mapImm = mapInst.getImmVec();
|
|
unsigned mapIdx = unsigned(mapImm.vec[0]);
|
|
|
|
const IR::Instruction& tcgInst = inst.getChildInst(ir, 1);
|
|
unsigned texGenIdx = RecursiveTraceTexGen(ir, diag, tcgInst, -1, normalize);
|
|
|
|
return toSwizzle ? EmitSamplingUseRaw(addTexSampling(mapIdx, texGenIdx)) :
|
|
EmitSamplingUseAlpha(addTexSampling(mapIdx, texGenIdx));
|
|
}
|
|
else if (!name.compare("ColorReg"))
|
|
{
|
|
const IR::Instruction& idxInst = inst.getChildInst(ir, 0);
|
|
unsigned idx = unsigned(idxInst.getImmVec().vec[0]);
|
|
return EmitColorRegUse(idx);
|
|
}
|
|
else if (!name.compare("Lighting"))
|
|
{
|
|
m_lighting = true;
|
|
return toSwizzle ? EmitLightingRaw() : EmitLightingAlpha();
|
|
}
|
|
else
|
|
diag.reportBackendErr(inst.m_loc, "unable to interpret '%s'", name.c_str());
|
|
break;
|
|
}
|
|
case IR::OpType::LoadImm:
|
|
{
|
|
const atVec4f& vec = inst.m_loadImm.m_immVec;
|
|
return EmitVal(vec.vec[0]);
|
|
}
|
|
case IR::OpType::Arithmetic:
|
|
{
|
|
ArithmeticOp op = inst.m_arithmetic.m_op;
|
|
const IR::Instruction& aInst = inst.getChildInst(ir, 0);
|
|
const IR::Instruction& bInst = inst.getChildInst(ir, 1);
|
|
std::string aTrace = RecursiveTraceAlpha(ir, diag, aInst, false);
|
|
std::string bTrace = RecursiveTraceAlpha(ir, diag, bInst, false);
|
|
|
|
switch (op)
|
|
{
|
|
case ArithmeticOp::Add:
|
|
{
|
|
return EmitAdd(aTrace, bTrace);
|
|
}
|
|
case ArithmeticOp::Subtract:
|
|
{
|
|
return EmitSub(aTrace, bTrace);
|
|
}
|
|
case ArithmeticOp::Multiply:
|
|
{
|
|
return EmitMult(aTrace, bTrace);
|
|
}
|
|
case ArithmeticOp::Divide:
|
|
{
|
|
return EmitDiv(aTrace, bTrace);
|
|
}
|
|
default:
|
|
diag.reportBackendErr(inst.m_loc, "invalid arithmetic op");
|
|
}
|
|
}
|
|
case IR::OpType::Swizzle:
|
|
{
|
|
const IR::Instruction& aInst = inst.getChildInst(ir, 0);
|
|
std::string aTrace = RecursiveTraceAlpha(ir, diag, aInst, true);
|
|
return EmitSwizzle1(diag, inst.m_loc, aTrace, inst.m_swizzle.m_idxs);
|
|
}
|
|
default:
|
|
diag.reportBackendErr(inst.m_loc, "invalid alpha op");
|
|
}
|
|
|
|
return std::string();
|
|
}
|
|
|
|
void ProgrammableCommon::reset(const IR& ir, Diagnostics& diag, const char* backendName)
|
|
{
|
|
m_lighting = false;
|
|
m_texSamplings.clear();
|
|
m_texMapEnd = 0;
|
|
m_tcgs.clear();
|
|
m_texMtxRefs.clear();
|
|
m_colorExpr.clear();
|
|
m_alphaExpr.clear();
|
|
|
|
diag.setBackend(backendName);
|
|
|
|
/* 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 = BlendFactor::One;
|
|
m_blendDst = BlendFactor::Zero;
|
|
}
|
|
else if (!rootCall.m_call.m_name.compare("HECLAlpha"))
|
|
{
|
|
m_blendSrc = BlendFactor::SrcAlpha;
|
|
m_blendDst = BlendFactor::InvSrcAlpha;
|
|
doAlpha = true;
|
|
}
|
|
else if (!rootCall.m_call.m_name.compare("HECLAdditive"))
|
|
{
|
|
m_blendSrc = BlendFactor::SrcAlpha;
|
|
m_blendDst = BlendFactor::One;
|
|
doAlpha = true;
|
|
}
|
|
else
|
|
{
|
|
diag.reportBackendErr(rootCall.m_loc, "%s backend doesn't handle '%s' root",
|
|
backendName, 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));
|
|
m_colorExpr = RecursiveTraceColor(ir, diag, colorRoot, false);
|
|
|
|
/* Follow Alpha Chain */
|
|
if (doAlpha)
|
|
{
|
|
const IR::Instruction& alphaRoot =
|
|
ir.m_instructions.at(rootCall.m_call.m_argInstIdxs.at(1));
|
|
m_alphaExpr = RecursiveTraceAlpha(ir, diag, alphaRoot, false);
|
|
}
|
|
}
|
|
|
|
static const char SWIZZLE_CHARS[] = "rgba";
|
|
|
|
std::string ProgrammableCommon::EmitSwizzle3(Diagnostics& diag, const SourceLocation& loc,
|
|
const std::string& a, const atInt8 swiz[4]) const
|
|
{
|
|
std::string retval = a + '.';
|
|
for (int i=0 ; i<3 ; ++i)
|
|
{
|
|
if (swiz[i] < 0 || swiz[i] > 3)
|
|
diag.reportBackendErr(loc, "unable to use swizzle as RGB value");
|
|
retval += SWIZZLE_CHARS[swiz[i]];
|
|
}
|
|
return retval;
|
|
}
|
|
|
|
std::string ProgrammableCommon::EmitSwizzle1(Diagnostics& diag, const SourceLocation& loc,
|
|
const std::string& a, const atInt8 swiz[4]) const
|
|
{
|
|
std::string retval = a + '.';
|
|
if (swiz[0] < 0 || swiz[0] > 3)
|
|
diag.reportBackendErr(loc, "unable to use swizzle as Alpha value");
|
|
retval += SWIZZLE_CHARS[swiz[0]];
|
|
return retval;
|
|
}
|
|
|
|
}
|
|
}
|