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CalcAmbShadowDE.pas
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unit CalcAmbShadowDE;
interface
uses
Classes, Math3D, TypeDefinitions, Windows;
type
TCalcAmbShadowDEThreadGeneral = class(TThread)
private
Iteration3Dext: TIteration3Dext;
// VgradsFOV: TVec3D;
Quality: Integer; //0..3 = 3,6,16,32 rays
Dither: Integer; //0,1,2: 0:no 1: 2x2 2: 3x3
seed: Integer;
// procedure CalculateVgradsFOV(ix: Integer);
// procedure doBinSearchIt(var ZZ: Double; RLastStepWidth: Double);
function GetRand: Double;
public
// CalcRect: TRect;
MCTparas: TMCTparameter;
protected
procedure Execute; override;
end;
TCalcAmbShadowDEThreadGeneral2 = class(TThread) //only for test
private
Iteration3Dext: TIteration3Dext;
// VgradsFOV: TVec3D;
Quality: Integer;
// Dither: Integer; //0,1,2: 0:no 1: 2x2 2: 3x3
seed: Integer;
// procedure CalculateVgradsFOV(ix: Integer);
// procedure doBinSearchIt(var ZZ: Double; RLastStepWidth: Double);
function GetRand: Double;
public
// CalcRect: TRect;
MCTparas: TMCTparameter;
protected
procedure Execute; override;
end;
function CalcAmbShadowDET(Header: TPMandHeader10; PCTS: TPCalcThreadStats;
PsiLight5: TPsiLight5; aSLoffset: Integer; iRect: TRect): Boolean;
procedure CalcAmbShadowDEfor1pos(PMCT: PMCTparameter; It3Dex: TPIteration3Dext;
mPsiLight: TPsiLight5; Quality, xx, yy: Integer);
implementation
uses Mand, Math, DivUtils, formulas, Forms, ImageProcess, CustomFormulas,
HeaderTrafos, LightAdjust, Calc;
function CalcAmbShadowDET(Header: TPMandHeader10; PCTS: TPCalcThreadStats;
PsiLight5: TPsiLight5; aSLoffset: Integer; iRect: TRect): Boolean;
var x, ThreadCount, Quali: Integer;
MCTparas: TMCTparameter;
CalcAmbShadowDEThread: array of TCalcAmbShadowDEThreadGeneral;
begin
Result := False;
try
Quali := (Header.bCalcAmbShadowAutomatic shr 4) and 3; //and 7
ThreadCount := Min(Mand3DForm.UpDown3.Position, Header.Height);
MCTparas := getMCTparasFromHeader(Header^, True);
Result := MCTparas.bMCTisValid;
if Result then
begin
MCTparas.bMCTFirstStepRandom := (Header.bCalcAmbShadowAutomatic and 128) <> 0; //FSR 0..7: SSAORcount?
MCTparas.pSiLight := PsiLight5;
MCTparas.SLoffset := aSLoffset;
MCTparas.PCalcThreadStats := PCTS;
MCTparas.CalcRect := iRect;
SetLength(CalcAmbShadowDEThread, ThreadCount);
end;
finally
end;
if Result then
begin
PCTS.ctCalcRect := iRect;
for x := 0 to ThreadCount - 1 do
begin
PCTS.CTrecords[x + 1].iActualYpos := iRect.Top - 1;
PCTS.CTrecords[x + 1].iActualXpos := iRect.Left;
MCTparas.iThreadId := x + 1;
try
CalcAmbShadowDEThread[x] := TCalcAmbShadowDEThreadGeneral.Create(True);
CalcAmbShadowDEThread[x].FreeOnTerminate := True;
CalcAmbShadowDEThread[x].MCTparas := MCTparas;
CalcAmbShadowDEThread[x].Priority := cTPrio[Mand3DForm.ComboBox2.ItemIndex];
CalcAmbShadowDEThread[x].Quality := Quali;
// CalcAmbShadowDEThread[x].CalcRect := iRect;
CalcAmbShadowDEThread[x].Dither := Header.AODEdithering;
// PCTS.CTprios[x + 1] := Header.iThreadPriority;
PCTS.CThandles[x + 1] := CalcAmbShadowDEThread[x];
PCTS.CTrecords[x + 1].isActive := 1;
except
ThreadCount := x;
Break;
end;
end;
for x := 0 to ThreadCount - 1 do CalcAmbShadowDEThread[x].MCTparas.iThreadCount := ThreadCount;
PCTS.HandleType := 1;
PCTS.iTotalThreadCount := ThreadCount;
PCTS.cCalcTime := GetTickCount;
for x := 0 to ThreadCount - 1 do CalcAmbShadowDEThread[x].Start;
Result := ThreadCount > 0;
end;
end;
//### for all: if cutplanes>0 .. max DE,Lengthtocutplane
{function MaxLengthToCutPlane(MCTparas: PMCTparameter; Vec: TPSVec; vPos: TPPos3D): Double;
var dTmp: Double;
begin
with MCTparas^ do
begin
Result := 0;
if ((iCutOptions and 1) > 0) and (Abs(Vec[0]) > 1e-20) then
begin
dTmp := -(dCOX - vPos^[0]) / Vec[0];
if dTmp > Result then Result := dTmp;
end;
if ((iCutOptions and 2) > 0) and (Abs(Vec[1]) > 1e-20) then
begin
dTmp := -(dCOY - vPos^[1]) / Vec[1];
if dTmp > Result then Result := dTmp;
end;
if ((iCutOptions and 4) > 0) and (Abs(Vec[2]) > 1e-20) then
begin
dTmp := -(dCOZ - vPos^[2]) / Vec[2];
if dTmp > Result then Result := dTmp;
end;
end;
end; }
function MinLengthToCutPlane(MCTparas: PMCTparameter; Vec: TPSVec; vPos: TPPos3D): Double;
var dTmp: Double;
begin
with MCTparas^ do
begin
Result := 1e31;
if ((iCutOptions and 1) > 0) and (Abs(Vec[0]) > 1e-20) then
begin
dTmp := (dCOX - vPos^[0]) / Vec[0];
if (dTmp > 0) and (dTmp < Result) then Result := dTmp;
end;
if ((iCutOptions and 2) > 0) and (Abs(Vec[1]) > 1e-20) then
begin
dTmp := (dCOY - vPos^[1]) / Vec[1];
if (dTmp > 0) and (dTmp < Result) then Result := dTmp;
end;
if ((iCutOptions and 4) > 0) and (Abs(Vec[2]) > 1e-20) then
begin
dTmp := (dCOZ - vPos^[2]) / Vec[2];
if (dTmp > 0) and (dTmp < Result) then Result := dTmp;
end;
// if Result > 1e30 then Result := 0;
end;
end;
{function AtCutPlane(MCTparas: PMCTparameter; Vec: TPSVec; vPos: TPPos3D; const plusD: Double): LongBool;
var dTmp: Double;
begin
with MCTparas^ do
begin
Result := False;
if ((iCutOptions and 1) > 0) and (Abs(Vec[0]) > 1e-20) then
begin
dTmp := (dCOX - vPos^[0]) / Vec[0];
Result := (dTmp > 0) and (dTmp < plusD);
end;
if not Result and ((iCutOptions and 2) > 0) and (Abs(Vec[1]) > 1e-20) then
begin
dTmp := (dCOY - vPos^[1]) / Vec[1];
Result := (dTmp > 0) and (dTmp < plusD);
end;
if not Result and ((iCutOptions and 4) > 0) and (Abs(Vec[2]) > 1e-20) then
begin
dTmp := (dCOZ - vPos^[2]) / Vec[2];
Result := (dTmp > 0) and (dTmp < plusD);
end;
end;
end; }
function AtCutPlane2(MCTparas: PMCTparameter; vPos: TPPos3D; const plusD: Double): LongBool;
begin
with MCTparas^ do
begin
Result := False;
if (iCutOptions and 1) > 0 then
Result := (Abs(vPos^[0] - dCOX) - plusD) < 0;
if not Result and ((iCutOptions and 2) > 0) then
Result := (Abs(vPos^[1] - dCOY) - plusD) < 0;
if not Result and ((iCutOptions and 4) > 0) then
Result := (Abs(vPos^[2] - dCOZ) - plusD) < 0;
end;
//(A (xa - xb) + B (ya - yb) + C (za - zb)) / sqrt(A*A + B*B + C*C) :mindist point to plane Point = Pa:(xa,ya,za) Pb=point on plane
//for x cutplane: A=1 B=0 C=0 D=-XCut
end;
//############## general method up to 32 rays #####################
{procedure TCalcAmbShadowDEThreadGeneral.doBinSearchIt(var ZZ: Double; RLastStepWidth: Double);
var dT1, dmul: Double;
itmp, MItmp: Integer;
LastSI, R, LastDif, YP: Single;
firstIt: LongBool;
begin
with Iteration3Dext do
begin
MItmp := maxIt;
YP := maxIt - 0.99;
Inc(maxIt, 1);
itmp := MCTparas.iDEAddSteps;
CalcSIT := True;
dT1 := 0;
dmul := 1;
firstIt := True;
repeat
ZZ := ZZ + dT1;
mAddVecWeight(@C1, @MCTparas.mVgradsFOV, dT1);
// MCTparas.mMandFunction(@C1);
CalcDE(@Iteration3Dext, @MCTparas);
if not firstIt then
begin
if LastDif < Abs(YP - SmoothItD) then
begin
ZZ := ZZ - dT1;
mAddVecWeight(@C1, @MCTparas.mVgradsFOV, -dT1);
SmoothItD := LastSI;
if dT1 > 0 then dmul := dmul * 0.5
else dmul := dmul * 0.7;
end;
end;
LastDif := Abs(YP - SmoothItD);
LastSI := SmoothItD;
if SmoothItD > maxIt - 0.1 then dT1 := -0.6 else
begin
ZZ := ZZ - 0.001;
mAddVecWeight(@C1, @MCTparas.mVgradsFOV, -0.001);
// MCTparas.mMandFunction(@C1);
CalcDE(@Iteration3Dext, @MCTparas);
R := LastSI - SmoothItD;
if Abs(R) < 1e-30 then
dT1 := Integer(LastSI < SmoothItD) - 0.5
else if R < 0 then dT1 := (YP - SmoothItD) / (R * 500)
else dT1 := (YP - SmoothItD) / (R * 1000);
if dT1 > 4 then dT1 := Sqrt(dT1) * 2 else
if dT1 < -9 then dT1 := Sqrt(-dT1) * -3;
dT1 := dT1 * dmul + 0.0005;
end;
firstIt := False;
Dec(itmp);
until
(itmp < 0);
maxIt := MItmp;
end;
end; }
{procedure TCalcAmbShadowDEThreadGeneral.CalculateVgradsFOV(ix: Integer);
begin
with MCTparas do
begin
CAFX := (0.5 * iMandWidth - ix) * FOVy / iMandHeight;
if bMCTPlanarOptic then
begin
VgradsFOV[0] := -CAFX;
VgradsFOV[1] := CAFY;
VgradsFOV[2] := mctPlOpticZ;
NormaliseVectorVar(VgradsFOV);
end else begin
BuildViewVectorDFOV(CAFY, CAFX, @VgradsFOV);
end;
RotateVectorReverse(@VgradsFOV, @VGrads);
end;
end; }
function TCalcAmbShadowDEThreadGeneral.GetRand: Double;
const dm: Double = 1 / $7FFFFF;
{begin
seed := 214013 * seed + 2531011;
Result := ((seed shr 16) and $7FFF) * 0.000030517578125; }
asm
add esp, -4
imul edx, [eax + seed], $343FD
add edx, $269EC3
mov [eax + seed], edx
shr edx, 8
and edx, $7FFFFF
mov [esp], edx
fild dword [esp]
fmul dm
add esp, 4
end;
procedure TCalcAmbShadowDEThreadGeneral.Execute;
var itmp, itmp2, x, y, RayCount: Integer;
mPsiLight: TPsiLight5;
DElimited, bEnd, bFirstStep, bInsideTmp: LongBool;
StepAO, DEmul, DStepMul, sMaxD, MDd10, Amul, Apow: Single;
CorrectionWeight, MaxAdd, Overlap, ABR, sTmp, sDT1mul: Single;
sAdd: array[0..32] of Single;
minRA: array[0..32] of Single;
dTmp, dT1, dT2, ZZ, dMinADif: Double;
dAmount, dStartDE, MaxDist{, MaxDistV}: Double;
IC: TVec3D;
SVec: TSVec;
Quat: TQuaternion;
RotV, RotW: TSMatrix3;
RotM: array[0..32] of TSVec;
RowCount: array[1..4] of Integer;
begin
with MCTparas do
try
IniIt3D(@MCTparas, @Iteration3Dext);
DEstop := msDEstop;
Iteration3Dext.CalcSIT := False;
{$IFDEF DEBUG}
{$Q-}
{$R-}
{$ENDIF}
seed := Round(Random * (iThreadId + 1) * $324594A1 + $24563487);
{$IFDEF DEBUG}
{$Q+}
{$R+}
{$ENDIF}
bInsideTmp := bInsideRendering;
iDEAddSteps := 5;
RotV := NormaliseMatrixToS(StepWidth, @VGrads);
sDT1mul := StepWidth * s05;
bIsIFS := False; //test, to dark with inside rendering+ifs
RayCount := 0; // Build ray vectors
if Quality = 0 then
begin
ABR := 60 * Pid180;
for x := 0 to 2 do
begin
BuildRotMatrixS(0, 0.5 * ABR, x * PiM2 * s1d3, @RotW);
RotM[RayCount] := ScaleSVector(TSVec(RotW[2]), -1);
Inc(RayCount);
end;
DStepMul := 1.8;
dMinADif := -1;
CorrectionWeight := 0.3;
end
else
begin
BuildRotMatrixS(0, 0, 0, @RotW); //one straight ray in normals direction
RotM[0] := ScaleSVector(TSVec(RotW[2]), -1);
RayCount := 1;
ABR := Pi * 0.5 / (Quality + 0.9); //angle between rows
for y := 1 to Quality do //next rows of rays
begin
dT1 := y * ABR; //angle of row relative to straight normals ray
itmp := Round(Sin(dT1) * Pi * 2 / ABR); //RowCount90deg[Quality] - 0.05); //count of rays in this row
RowCount[y] := itmp;
for x := 0 to itmp - 1 do
begin
BuildRotMatrixS(0, dT1, x * 2 * Pi / itmp, @RotW);
RotM[RayCount] := ScaleSVector(TSVec(RotW[2]), -1);
Inc(RayCount);
end;
end;
DStepMul := 1 + Sin(ABR);
dMinADif := Cos(ABR * 1.2);
if Quality = 1 then CorrectionWeight := 0.2 else CorrectionWeight := 0.1666;
end;
sMaxD := DEAOmaxL * s05 * Sqrt(Sqr(iMandHeight) + Sqr(iMandWidth)); //maxLengthMultiplier
y := iThreadId - 1 + CalcRect.Top;
while y <= CalcRect.Bottom do
begin
PCalcThreadStats.CTrecords[iThreadID].iActualYpos := y;
x := CalcRect.Left;
mPsiLight := TPsiLight5(Integer(pSiLight) + (y - CalcRect.Top) * SLoffset);
CAFY := (y / iMandHeight - s05) * FOVy;
while x <= CalcRect.Right do
begin
PCalcThreadStats.CTrecords[iThreadID].iActualXpos := x;
mPsiLight.AmbShadow := 0;
//option AO on BG //inside, no Shadow (if cut-option "and" other cutplanes, this has to be considered)
if (mPsiLight.Zpos < 32768) and (mPsiLight.SIgradient < 32768) then
begin
RMCalculateVgradsFOV(@MCTparas, x + 1);
RMCalculateStartPos(@MCTparas, x, y);
Iteration3Dext.CalcSIT := False;
ZZ := (Sqr((8388351.5 - (PInteger(@mPsiLight.RoughZposFine)^ shr 8)) / ZcMul + 1) - 1) / Zcorr;
mAddVecWeight(@Iteration3Dext.C1, @mVgradsFOV, ZZ);
msDEstop := DEstop * (1 + ZZ * mctDEstopFactor);
if bInAndOutside then bInsideRendering := (mPsiLight.OTrap and $8000) = 0
else bInsideRendering := bInsideTmp;
bCalcInside := bInsideRendering;
// if bInAndOutside and not bInsideRendering then //..in calcthread
// mPsiLight.OTrap := mPsiLight.OTrap or $8000;
dTmp := CalcDE(@Iteration3Dext, @MCTparas);
if dTmp > msDEstop * 2 then dTmp := msDEstop * 2;
// DElimited := Iteration3Dext.ItResultI < MaxItsResult;
DElimited := (Iteration3Dext.ItResultI < MaxItsResult) or (dTmp < msDEstop);
if DElimited then
begin
itmp := 5; //bin search
dT1 := (Sqr((8388351.9 - (PInteger(@mPsiLight.RoughZposFine)^ shr 8)) / ZcMul + 1) - 1) / Zcorr - ZZ;
while (itmp > 0) and (Abs(dTmp - msDEstop) > 0.004) do
begin
ZZ := ZZ + dT1;
mAddVecWeight(@Iteration3Dext.C1, @mVgradsFOV, dT1);
msDEstop := DEstop * (1 + ZZ * mctDEstopFactor);
Dec(itmp);
if itmp > 0 then
begin
dTmp := CalcDE(@Iteration3Dext, @MCTparas);
if dTmp < msDEstop then dT1 := Abs(dT1) * -0.55
else dT1 := Abs(dT1) * 0.55;
end;
end;
end
else
begin
RMdoBinSearchIt(@MCTparas, ZZ);
msDEstop := DEstop * (1 + Abs(ZZ) * mctDEstopFactor);
end;
msDEstop := MinCS(msDEstop, 1e6);
mCopyVec(@IC, @Iteration3Dext.C1);
StepAO := msDEstop / DEstop;
MaxDist := sMaxD * Sqrt(StepAO);
if bVaryDEstop then
begin
if (not bInsideRendering) or bIsIFS then msDEstop := msDEstop / Sqr(DStepMul);
end
else msDEstop := DEstop / Sqr(DStepMul);
if Dither > 0 then
begin
dT1 := (y mod (Dither + 1)) * s05 / Dither;
dT2 := (x mod (Dither + 1)) * s05 / Dither;
if Quality = 0 then
begin
// ABR := (dT1 * 0.2 + 0.8) * 60 * Pid180;
// DEmul := 1 / Sin(ABR * 0.6);
for itmp := 0 to 2 do
begin
{ seed := 214013 * seed + 2531011;
BuildRotMatrixS(0, (((seed shr 16) and $FF) * 0.0031372 + 0.1) * 60 * Pid180,
(itmp + ((seed shr 8) and $FF) * 0.0039216 - 0.5) * 2 * Pi / 3, @RotW); }
BuildRotMatrixS(0, (dT1 + s05) * 50 * Pid180, (itmp + dT2) * PiM2 * s1d3, @RotW);
RotM[itmp] := ScaleSVector(TSVec(RotW[2]), -1);
end;
end
else
begin
if dT1 > 0.1 then RayCount := 1 else RayCount := 0;
// RayCount := (y and 1); // dont use middle ray if rows shifted towards it (rows(y and 1)=0 are more light)
// if Quality = 1 then CorrectionWeight := 0.15 else CorrectionWeight := 0.12;
// if Quality = 1 then sRg := 0.87 - RayCount * 0.3 else sRg := 0.933 - RayCount * 0.3;
// seed := 214013 * seed + 2531011;
ABR := Pi * s05 / (Quality + 0.9); //angle between rows
BuildRotMatrixS(0, 0, 0, @RotW);
RotM[0] := ScaleSVector(TSVec(RotW[2]), -1);
for itmp2 := 1 to Quality do
begin
for itmp := 0 to RowCount[itmp2] - 1 do
begin
// seed := 214013 * seed + 2531011;
// BuildRotMatrixS(0, ABR * (itmp2 + ((seed shr 16) and $FF) * 0.0039216 - 0.5),
// (itmp + ((seed shr 8) and $FF) * 0.0039216 - 0.5) * 2 * Pi / RowCount[itmp2], @RotW);
BuildRotMatrixS(0, ABR * (itmp2 + dT1 - 0.25), (itmp + dT2) * PiM2 / RowCount[itmp2], @RotW);
RotM[RayCount] := ScaleSVector(TSVec(RotW[2]), -1);
Inc(RayCount);
end;
end;
// iTopA := 16383 - Round(3000 / (RayCount + 2));
end;
// ABR := 1 / ABR;
end;
DEmul := Sqrt(RayCount * s05);
ABR := 1.2 / ArcSinSafe(1 / DEmul);
MDd10 := 0.1 / (MaxDist * DEmul);
if bInsideRendering and not bIsIFS then DEmul := 1;
SVec[0] := mPsiLight.NormalX;
SVec[1] := mPsiLight.NormalY;
SVec[2] := mPsiLight.NormalZ;
NormaliseSVectorVar(SVec);
Quat := MakeRotQuatFromSNormals(SVec);
CreateSMatrixFromQuat(RotW, Quat);
for itmp := 0 to RayCount - 1 do
begin
SVec := RotM[itmp];
RotateSVectorReverseS(@SVec, @RotW); //rotate halfsphere vec to normal vec
RotateSVectorS(@SVec, @RotV); //rotate to abs vec with vgrads
// MaxDistV := MaxDist;
// if iCutOptions > 0 then MaxDistV := MaxCD(0, MinCD(MaxDistV, MinLengthToCutPlane(@MCTparas, @SVec, @IC)));
dT1 := StepAO * DStepMul;
sTmp := 1;
bEnd := False;
bFirstStep := bMCTFirstStepRandom;
repeat
if bFirstStep then
begin
bFirstStep := False;
dT1 := dT1 * (GetRand * 1.5 + s05);
end
else if dT1 > maxDist then
begin
dT1 := maxDist; //to make shure that all rays go max til the same distance to avoid artifacts from the last position.
bEnd := True;
end;
CopyAddSVecWeight(@Iteration3Dext.C1, @IC, @SVec, dT1);
if (iCutOptions > 0) and AtCutPlane2(@MCTparas, @Iteration3Dext.C1, dT1 * sDT1mul) then Break;
dT2 := CalcDE(@Iteration3Dext, @MCTparas); // @SVec{ rotv[2] = midpos viewvec?
if bInsideRendering and not bIsIFS then //Result := ((C1 - dCOX) / Vec[0]) - plusD < 0;
begin //MinLengthToCutPlane(MCTparas: PMCTparameter; Vec: TPSVec; vPos: TPPos3D): Double;
if dT2 < msDEstop then
begin
sTmp := Sqr(Sqr(dT1 / maxDist));
Break;
end;
dT1 := dT1 + dT1 * DStepMul * 0.1 + msDEstop;// * 2;
end
else
begin
sTmp := MinCS(sTmp, (dT2 - msDEstop + dT1 * MDd10) / dT1);
if sTmp < s002 then Break;
dT1 := dT1 + Max(dT2, dT1 * DStepMul);
end;
until bEnd;
minRA[itmp] := Max0S(sTmp) * DEmul;
end;
dAmount := 0;
if bInsideRendering and not bIsIFS then
begin
for itmp := 0 to RayCount - 1 do dAmount := dAmount + minRA[itmp];
end
else
begin
for itmp := 0 to RayCount - 1 do //correction
begin
SVec := RotM[itmp];
sAdd[itmp] := 0;
if minRA[itmp] < 1 then
begin
MaxAdd := 1 - minRA[itmp];
for itmp2 := 0 to RayCount - 1 do if itmp2 <> itmp then
begin
dTmp := DotOfSVectors(SVec, RotM[itmp2]);
if dTmp > dMinADif then
begin //(90°) 0 -> Pi*0.5 (0°)
// Overlap := minRA[itmp2] - ArcCosSafe(dTmp) * ABR; // ABR=recip. angle between rows
Overlap := minRA[itmp2] - ArcCosSafe(dTmp) * ABR + 1;
if Overlap > 0 then sAdd[itmp] := sAdd[itmp] + MinCS(MaxAdd, Overlap) * CorrectionWeight; //CW: recip. of raycount of neighbours
end;
end;
end;
end;
for itmp := 0 to RayCount - 1 do dAmount := dAmount + MinCS(1, (sAdd[itmp] + minRA[itmp]));
end;
mPsiLight.AmbShadow := Max(0, Round(16383 * (1 - dAmount / RayCount))); //todo: FSR 0..7: n times calc + average
end;
Inc(x);
Inc(mPsiLight);
if PCalcThreadStats.pLBcalcStop^ then Break;
end;
if PCalcThreadStats.pLBcalcStop^ then Break;
Inc(y, iThreadCount);
end;
finally
if not PCalcThreadStats.pLBcalcStop^ then
PCalcThreadStats.CTrecords[iThreadID].iActualYpos := iMandHeight;
PCalcThreadStats.CTrecords[iThreadID].isActive := 0;
PostMessage(PCalcThreadStats.pMessageHwnd, WM_ThreadReady, 0, 0);
end;
end;
procedure CalcAmbShadowDEfor1pos(PMCT: PMCTparameter; It3Dex: TPIteration3Dext; //used only by Reflections so far
mPsiLight: TPsiLight5; Quality, xx, yy: Integer); //with dithering = 0
var itmp, ix, iy, RayCount: Integer;
DElimited, bEnd, bFirstStep: LongBool;
StepAO, DEmul, DStepMul, sMaxD, MDd10, Amul, Apow: Single;
CorrectionWeight, MaxAdd, Overlap, ABR, sTmp, sDT1mul: Single;
sAdd: array[0..32] of Single;
minRA: array[0..32] of Single;
dTmp, dT1, dT2, dMinADif: Double;
dAmount, dStartDE, MaxDist: Double;
IC, CC: TVec3D;
SVec: TSVec;
Quat: TQuaternion;
RotV, RotW: TSMatrix3;
RotM: array[0..32] of TSVec;
begin
mPsiLight.AmbShadow := 0;
//option AO on BG //inside, no Shadow (if cut-option "and" other cutplanes, this has to be considered)
if (mPsiLight.Zpos < 32768) and (mPsiLight.SIgradient < 32768) then
with PMCT^ do
begin
It3Dex.CalcSIT := False;
RotV := NormaliseMatrixToS(StepWidth, @VGrads);
sMaxD := DEAOmaxL * s05 * Sqrt(Sqr(iMandHeight) + Sqr(iMandWidth)); //maxLengthMultiplier
sDT1mul := StepWidth * s05;
bIsIFS := False; //test, inside IFS still wrong
msDEstop := MinCS(DEstop * (1 + Abs(mZZ) * mctDEstopFactor), 1e6);
mCopyVec(@IC, @It3Dex.C1);
StepAO := msDEstop / DEstop;
MaxDist := sMaxD * Sqrt(StepAO);
if AOdither > 0 then
begin
dT1 := (yy mod (AOdither + 1)) * s05 / AOdither;
dT2 := (xx mod (AOdither + 1)) * s05 / AOdither;
end
else
begin
dT1 := 0.25;
dT2 := 0;
end;
if Quality = 0 then
begin
RayCount := 3;
ABR := 60 * Pid180;
for itmp := 0 to 2 do
begin
if AOdither > 0 then
BuildRotMatrixS(0, (dT1 + s05) * 50 * Pid180, (itmp + dT2) * PiM2 * s1d3, @RotW)
else
BuildRotMatrixS(0, s05 * ABR, itmp * PiM2 * s1d3, @RotW);
RotM[itmp] := ScaleSVector(TSVec(RotW[2]), -1);
end;
DStepMul := 1.8;
dMinADif := -1;
CorrectionWeight := s03;
end
else
begin
ABR := Pi * s05 / (Quality + 0.9); //angle between rows
if dT1 < 0.1 then RayCount := 0 else
begin
RayCount := 1;
BuildRotMatrixS(0, 0, 0, @RotW);
RotM[0] := ScaleSVector(TSVec(RotW[2]), -1);
end;
for iy := 1 to Quality do
begin
itmp := Round(Sin(dT1) * PiM2 / ABR);
for ix := 0 to itmp - 1 do
begin
BuildRotMatrixS(0, ABR * (iy + dT1 - 0.25), (ix + dT2) * PiM2 / itmp, @RotW);
RotM[RayCount] := ScaleSVector(TSVec(RotW[2]), -1);
Inc(RayCount);
end;
end;
DStepMul := 1 + Sin(ABR);
dMinADif := Cos(ABR * 1.2);
if Quality = 1 then CorrectionWeight := 0.2 else CorrectionWeight := 0.1666;
end;
if bInsideRendering and not bIsIFS then DStepMul := DStepMul * s05;
SVec := MakeSVecFromNormals(mPsiLight);
Quat := MakeRotQuatFromSNormals(SVec);
CreateSMatrixFromQuat(RotW, Quat);
if bVaryDEstop then
begin
if (not bInsideRendering) or bIsIFS then msDEstop := msDEstop / Sqr(DStepMul);
end
else msDEstop := DEstop / Sqr(DStepMul);
if bInsideRendering and not bIsIFS then DEmul := 1 else DEmul := Sqrt(RayCount * s05);
ABR := 1.2 / ArcSinSafe(1 / DEmul); //ArcSin generated bugs?
MDd10 := 0.1 / (MaxDist * DEmul);
for ix := 0 to RayCount - 1 do
begin
SVec := RotM[ix];
RotateSVectorReverseS(@SVec, @RotW);
RotateSVectorS(@SVec, @RotV);
dT1 := StepAO * DStepMul;
sTmp := 1;
bEnd := False;
bFirstStep := bMCTFirstStepRandom;
repeat
if bFirstStep then
begin
bFirstStep := False;
dT1 := dT1 * (Random * 1.5 + s05);
end
else if dT1 > maxDist then
begin
dT1 := maxDist; //to make shure that all rays go max til the same distance to avoid artifacts from the last position.
bEnd := True;
end;
CopyAddSVecWeight(@It3Dex.C1, @IC, @SVec, dT1);
if (iCutOptions > 0) and AtCutPlane2(PMCT, @It3Dex.C1, dT1 * sDT1mul) then Break;
dT2 := CalcDE(It3Dex, PMCT); // @RotV[2],
if bInsideRendering and not bIsIFS then //and not DEoption = 20! dIFS like normal...
begin
if dT2 < msDEstop then
begin
sTmp := Sqr(Sqr(dT1 / maxDist)); //maxdist=-NAN! on inout abox+ifs
Break;
end;
dT1 := dT1 + dT1 * DStepMul * 0.1 + msDEstop;// * 2; dt1=-inf! on inout abox+ifs
end
else
begin
sTmp := MinCS(sTmp, (dT2 - msDEstop + dT1 * MDd10) / dT1);
if sTmp < s002 then Break;
dT1 := dT1 + Max(dT2, dT1 * DStepMul);
end;
until bEnd;
minRA[ix] := Max0S(sTmp) * DEmul;
end;
dAmount := 0;
if bInsideRendering and not bIsIFS then
begin
for iy := 0 to RayCount - 1 do dAmount := dAmount + minRA[iy];
end
else
begin
for iy := 0 to RayCount - 1 do //correction
begin
SVec := RotM[iy];
sAdd[iy] := 0;
if minRA[iy] < 1 then
begin
MaxAdd := 1 - minRA[iy];
for ix := 0 to RayCount - 1 do if ix <> iy then
begin
dTmp := DotOfSVectors(SVec, RotM[ix]);
if dTmp > dMinADif then
begin //(90°) 0 -> Pi*0.5 (0°)
Overlap := minRA[ix] - ArcCosSafe(dTmp) * ABR + 1;
if Overlap > 0 then sAdd[iy] := sAdd[iy] + MinCS(MaxAdd, Overlap) * CorrectionWeight; //CW: recip. of raycount of neighbours
end;
end;
end;
end;
for iy := 0 to RayCount - 1 do dAmount := dAmount + MinCS(1, (sAdd[iy] + minRA[iy]));
end;
mPsiLight.AmbShadow := Max(0, Round(16383 * (1 - dAmount / RayCount)));
mCopyVec(@It3Dex.C1, @IC);
end;
end;
{------------version with fixed fullsphere rays---------------}
{procedure TCalcAmbShadowDEThreadGeneral2.doBinSearchIt(var ZZ: Double; RLastStepWidth: Double);
var dT1, dmul: Double;
itmp, MItmp: Integer;
LastSI, R, LastDif, YP: Single;
firstIt: LongBool;
begin
with Iteration3Dext do
begin
MItmp := maxIt;
YP := maxIt - 0.99;
Inc(maxIt, 1);
itmp := MCTparas.iDEAddSteps;
CalcSIT := True;
dT1 := 0;
dmul := 1;
firstIt := True;
repeat
ZZ := ZZ + dT1;
mAddVecWeight(@C1, @MCTparas.mVgradsFOV, dT1);
// MCTparas.mMandFunction(@C1);
CalcDE(@Iteration3Dext, @MCTparas);
if not firstIt then
begin
if LastDif < Abs(YP - SmoothItD) then
begin
ZZ := ZZ - dT1;
mAddVecWeight(@C1, @MCTparas.mVgradsFOV, -dT1);
SmoothItD := LastSI;
if dT1 > 0 then dmul := dmul * 0.5
else dmul := dmul * 0.7;
end;
end;
LastDif := Abs(YP - SmoothItD);
LastSI := SmoothItD;
if SmoothItD > maxIt - 0.1 then dT1 := -0.6 else
begin
ZZ := ZZ - 0.001;
mAddVecWeight(@C1, @MCTparas.mVgradsFOV, -0.001);
// MCTparas.mMandFunction(@C1);
CalcDE(@Iteration3Dext, @MCTparas);
R := LastSI - SmoothItD;
if Abs(R) < 1e-30 then
dT1 := Integer(LastSI < SmoothItD) - 0.5
else if R < 0 then dT1 := (YP - SmoothItD) / (R * 500)
else dT1 := (YP - SmoothItD) / (R * 1000);
if dT1 > 4 then dT1 := Sqrt(dT1) * 2 else
if dT1 < -9 then dT1 := Sqrt(-dT1) * -3;
dT1 := dT1 * dmul + 0.0005;
end;
firstIt := False;
Dec(itmp);
until
(itmp < 0);
maxIt := MItmp;
end;
end;
{procedure TCalcAmbShadowDEThreadGeneral2.CalculateVgradsFOV(ix: Integer);
begin
with MCTparas do
begin
CAFX := (0.5 * iMandWidth - ix) * FOVy / iMandHeight;
if bMCTPlanarOptic then
begin
VgradsFOV[0] := -CAFX;
VgradsFOV[1] := CAFY;
VgradsFOV[2] := mctPlOpticZ;
NormaliseVectorVar(VgradsFOV);
end else begin
BuildViewVectorDFOV(CAFY, CAFX, @VgradsFOV);
end;
RotateVectorReverse(@VgradsFOV, @VGrads);
end;
end; }
function TCalcAmbShadowDEThreadGeneral2.GetRand: Double;
const dm: Double = 1 / $7FFFFF;
asm
add esp, -4
imul edx, [eax + seed], $343FD
add edx, $269EC3
mov [eax + seed], edx
shr edx, 8
and edx, $7FFFFF
mov [esp], edx
fild dword [esp]
fmul dm
add esp, 4
end;
procedure TCalcAmbShadowDEThreadGeneral2.Execute;
var itmp, itmp2, x, y, RayCount: Integer;
mPsiLight: TPsiLight5;
DElimited, bEnd, bFirstStep: LongBool;
StepAO, DEmul, DStepMul, sMaxD, MDd10, Amul, Apow: Single;
CorrectionWeight, MaxAdd, Overlap, ABR, sTmp: Single;
// sAdd: array[0..32] of Single;
// minRA: array[0..32] of Single;
dTmp, dT1, dT2, ZZ, dMinADif: Double;
dAmount, dStartDE, MaxDist: Double;
IC, CC: TVec3D;
SVec: TSVec;
RotSM: TSMatrix3;
Vecs: array of TSVec;
const
c0p02: Single = 0.02;
begin
with MCTparas do
try
IniIt3D(@MCTparas, @Iteration3Dext);
DEstop := msDEstop;
Iteration3Dext.CalcSIT := False;
// seed := Round(Random * $324594A1 + $24563487);
seed := Round(Random * (iThreadId + 1) * $324594A1 + $24563487);
iDEAddSteps := 5;
RayCount := (1 shl Quality) * 8; //Build ray vectors 8, 16, 32, 64
SetLength(Vecs, RayCount);
for x := 0 to RayCount - 1 do
begin
// BuildRotMatrixS(0, 0.5 * ABR, x * 2 * Pi / 3, @RotW);
// Vecs[x] := ScaleSVector(TSVec(RotW[2]), StepWidth);
end;
DStepMul := 1 + (3 - Quality) * 0.25;
// dMinADif := -1;
// CorrectionWeight := 0.2;
{ ABR := Pi * 0.5 / (Quality + 0.9); //angle between rows
for y := 1 to Quality do //next rows of rays
begin
dT1 := y * ABR; //angle of row relative to straight normals ray
itmp := Round(Sin(dT1) * Pi * 2 / ABR); //RowCount90deg[Quality] - 0.05); //count of rays in this row
RowCount[y] := itmp;
for x := 0 to itmp - 1 do
begin
BuildRotMatrixS(0, dT1, x * 2 * Pi / itmp, @RotW);
RotM[RayCount] := ScaleSVector(TSVec(RotW[2]), -1);
Inc(RayCount);
end;
end;
DStepMul := 1 + Sin(ABR);
dMinADif := Cos(ABR * 1.2);
if Quality = 1 then CorrectionWeight := 0.2 else CorrectionWeight := 0.1666;
end; }
sMaxD := DEAOmaxL * Sqrt(Sqr(iMandHeight) + Sqr(iMandWidth)) * s05;
y := iThreadId - 1 + CalcRect.Top;
while y <= CalcRect.Bottom do
begin
PCalcThreadStats.CTrecords[iThreadID].iActualYpos := y;
x := CalcRect.Left;
mPsiLight := TPsiLight5(Integer(pSiLight) + (y - CalcRect.Top) * SLoffset);
CAFY := (y / iMandHeight - s05) * FOVy;
mCopyAddVecWeight(@CC, @Ystart, @Vgrads[1], y);
while x <= CalcRect.Right do
begin
PCalcThreadStats.CTrecords[iThreadID].iActualXpos := x;
mPsiLight.AmbShadow := 0;
//option AO on BG //inside, no Shadow (if cut-option "and" other cutplanes, this has to be considered)
if (mPsiLight.Zpos < 32768) and (mPsiLight.SIgradient < 32768) then
begin
RMCalculateVgradsFOV(@MCTparas, x + 1);
mCopyAddVecWeight(@Iteration3Dext.C1, @CC, @Vgrads[0], x);
Iteration3Dext.CalcSIT := False;
ZZ := (Sqr((8388351.5 - (PInteger(@mPsiLight.RoughZposFine)^ shr 8)) / ZcMul + 1) - 1) / Zcorr;
mAddVecWeight(@Iteration3Dext.C1, @mVgradsFOV, ZZ);
msDEstop := DEStop * (1 + ZZ * mctDEstopFactor);
dTmp := CalcDE(@Iteration3Dext, @MCTparas); //can be +NAN? -> endless loop
if dTmp > msDEstop * 2 then dTmp := msDEstop * 2;
// DElimited := Iteration3Dext.ItResultI < MaxItsResult;
DElimited := (Iteration3Dext.ItResultI < MaxItsResult) or (dTmp < msDEstop);
if DElimited then
begin
itmp := 5; //bin search
itmp2 := iMaxit;
iMaxit := Iteration3Dext.ItResultI;
dT1 := (Sqr((8388351.9 - (PInteger(@mPsiLight.RoughZposFine)^ shr 8)) / ZcMul + 1) - 1) / Zcorr - ZZ;
while (itmp > 0) and (Abs(dTmp - msDEstop) > 0.004) do
begin
ZZ := ZZ + dT1;
mAddVecWeight(@Iteration3Dext.C1, @mVgradsFOV, dT1);
msDEstop := DEStop * (1 + ZZ * mctDEstopFactor);
Dec(itmp);
if itmp > 0 then
begin
dTmp := CalcDE(@Iteration3Dext, @MCTparas);
if dTmp < msDEstop then dT1 := Abs(dT1) * -0.55
else dT1 := Abs(dT1) * 0.55;
end;
end;
iMaxit := itmp2;
end
else
begin
RMdoBinSearchIt(@MCTparas, ZZ);//, msDEstop * -0.3);
msDEstop := DEStop * (1 + ZZ * mctDEstopFactor);
end;
if msDEstop > 1e4 then msDEstop := 1e4 else
if msDEstop < DEstop then msDEstop := DEstop;
mCopyVec(@IC, @Iteration3Dext.C1);
StepAO := msDEstop / DEstop;
MaxDist := sMaxD * Sqrt(StepAO);
if bVaryDEstop then msDEstop := msDEstop / Sqr(DStepMul)
else msDEstop := DEstop / Sqr(DStepMul);
{ if Dither > 0 then
begin
dT1 := (y mod (Dither + 1)) * 0.5 / Dither;
dT2 := (x mod (Dither + 1)) * 0.5 / Dither;
if Quality = 0 then
begin
for itmp := 0 to 2 do
begin
BuildRotMatrixS(0, (dT1 + 0.5) * 50 * Pid180, (itmp + dT2) * 2 * Pi / 3, @RotW);
RotM[itmp] := ScaleSVector(TSVec(RotW[2]), -1);
end;
end
else
begin
if dT1 > 0.1 then RayCount := 1 else RayCount := 0;
ABR := Pi * 0.5 / (Quality + 0.9); //angle between rows
BuildRotMatrixS(0, 0, 0, @RotW);
RotM[0] := ScaleSVector(TSVec(RotW[2]), -1);
for itmp2 := 1 to Quality do
begin
for itmp := 0 to RowCount[itmp2] - 1 do
begin
BuildRotMatrixS(0, ABR * (itmp2 + dT1 - 0.25), (itmp + dT2) * 2 * Pi / RowCount[itmp2], @RotW);
RotM[RayCount] := ScaleSVector(TSVec(RotW[2]), -1);
Inc(RayCount);
end;
end;
end;