| static constexpr char SKSL_MINIFIED_sksl_graphite_vert[] = |
| "const float $PI=3.14159274;const float $kDegree=3.;const float $kPrecision=" |
| "4.;const float $kLengthTerm=3.;const float $kLengthTermPow2=9.;$pure float $wangs_formula_max_fdiff_p2" |
| "(float2 p0,float2 p1,float2 p2,float2 p3,float2x2 matrix){float2 d0=matrix*" |
| "(fma(float2(-2.),p1,p2)+p0);float2 d1=matrix*(fma(float2(-2.),p2,p3)+p1);return" |
| " max(dot(d0,d0),dot(d1,d1));}$pure float $wangs_formula_cubic(float2 p0,float2" |
| " p1,float2 p2,float2 p3,float2x2 matrix){float m=$wangs_formula_max_fdiff_p2" |
| "(p0,p1,p2,p3,matrix);return max(ceil(sqrt($kLengthTerm*sqrt(m))),1.);}$pure" |
| " float $wangs_formula_cubic_log2(float2 p0,float2 p1,float2 p2,float2 p3,float2x2" |
| " matrix){float m=$wangs_formula_max_fdiff_p2(p0,p1,p2,p3,matrix);return ceil" |
| "(log2(max($kLengthTermPow2*m,1.))*.25);}$pure float $wangs_formula_conic_p2" |
| "(float2 p0,float2 p1,float2 p2,float w){float2 C=(min(min(p0,p1),p2)+max(max" |
| "(p0,p1),p2))*.5;p0-=C;p1-=C;p2-=C;float m=sqrt(max(max(dot(p0,p0),dot(p1,p1" |
| ")),dot(p2,p2)));float2 dp=fma(float2(-2.*w),p1,p0)+p2;float dw=abs(fma(-2.," |
| "w,2.));float rp_minus_1=max(0.,fma(m,$kPrecision,-1.));float numer=length(dp" |
| ")*$kPrecision+rp_minus_1*dw;float denom=4.*min(w,1.);return numer/denom;}$pure" |
| " float $wangs_formula_conic(float2 p0,float2 p1,float2 p2,float w){float n2" |
| "=$wangs_formula_conic_p2(p0,p1,p2,w);return max(ceil(sqrt(n2)),1.);}$pure float" |
| " $wangs_formula_conic_log2(float2 p0,float2 p1,float2 p2,float w){float n2=" |
| "$wangs_formula_conic_p2(p0,p1,p2,w);return ceil(log2(max(n2,1.))*.5);}$pure" |
| " float2 $robust_normalize_diff(float2 a,float2 b){float2 diff=a-b;if(diff==" |
| "float2(0.)){return float2(0.);}else{float invMag=1./max(abs(diff.x),abs(diff" |
| ".y));return normalize(invMag*diff);}}$pure float $cosine_between_unit_vectors" |
| "(float2 a,float2 b){return clamp(dot(a,b),-1.,1.);}$pure float $miter_extent" |
| "(float cosTheta,float miterLimit){float x=fma(cosTheta,.5,.5);return(x*miterLimit" |
| ")*miterLimit>=1.?inversesqrt(x):sqrt(x);}$pure float $num_radial_segments_per_radian" |
| "(float approxDevStrokeRadius){return.5/acos(max(1.-.25/approxDevStrokeRadius" |
| ",-1.));}$pure float $unchecked_mix(float a,float b,float T){return fma(b-a," |
| "T,a);}$pure float2 $unchecked_mix(float2 a,float2 b,float T){return fma(b-a" |
| ",float2(T),a);}$pure float4 $unchecked_mix(float4 a,float4 b,float4 T){return" |
| " fma(b-a,T,a);}$pure float2 tessellate_filled_curve(float2x2 vectorXform,float" |
| " resolveLevel,float idxInResolveLevel,float4 p01,float4 p23){float2 localcoord" |
| ";if(isinf(p23.z)){localcoord=resolveLevel!=0.?p01.zw:(idxInResolveLevel!=0." |
| "?p23.xy:p01.xy);}else{float2 p0=p01.xy;float2 p1=p01.zw;float2 p2=p23.xy;float2" |
| " p3=p23.zw;float w=-1.;float maxResolveLevel;if(isinf(p23.w)){w=p3.x;maxResolveLevel" |
| "=$wangs_formula_conic_log2(vectorXform*p0,vectorXform*p1,vectorXform*p2,w);" |
| "p1*=w;p3=p2;}else{maxResolveLevel=$wangs_formula_cubic_log2(p0,p1,p2,p3,vectorXform" |
| ");}if(resolveLevel>maxResolveLevel){idxInResolveLevel=floor(ldexp(idxInResolveLevel" |
| ",int(maxResolveLevel-resolveLevel)));resolveLevel=maxResolveLevel;}float fixedVertexID" |
| "=floor(.5+ldexp(idxInResolveLevel,int(5.-resolveLevel)));if(0.<fixedVertexID" |
| "&&fixedVertexID<32.){float T=fixedVertexID*.03125;float2 ab=mix(p0,p1,T);float2" |
| " bc=mix(p1,p2,T);float2 cd=mix(p2,p3,T);float2 abc=mix(ab,bc,T);float2 bcd=" |
| "mix(bc,cd,T);float2 abcd=mix(abc,bcd,T);float u=mix(1.,w,T);float v=(w+1.)-" |
| "u;float uv=mix(u,v,T);localcoord=w<0.?abcd:abc/uv;}else{localcoord=fixedVertexID" |
| "==0.?p0:p3;}}return localcoord;}$pure float4 tessellate_stroked_curve(float" |
| " edgeID,float maxEdges,float2x2 affineMatrix,float2 translate,float maxScale" |
| ",float4 p01,float4 p23,float2 lastControlPoint,float2 strokeParams){float2 p0" |
| "=p01.xy;float2 p1=p01.zw;float2 p2=p23.xy;float2 p3=p23.zw;float w=-1.;if(isinf" |
| "(p23.w)){w=p3.x;p3=p2;}float numParametricSegments;if(w<0.){if(p0==p1&&p2==" |
| "p3){numParametricSegments=1.;}else{numParametricSegments=$wangs_formula_cubic" |
| "(p0,p1,p2,p3,affineMatrix);}}else{numParametricSegments=$wangs_formula_conic" |
| "(affineMatrix*p0,affineMatrix*p1,affineMatrix*p2,w);}float strokeRadius=strokeParams" |
| ".x;float joinType=strokeParams.y;bool isHairline=strokeParams.x==0.;float numRadialSegmentsPerRadian" |
| ";if(isHairline){numRadialSegmentsPerRadian=$num_radial_segments_per_radian(" |
| "1.);strokeRadius=.5;}else{numRadialSegmentsPerRadian=$num_radial_segments_per_radian" |
| "(maxScale*strokeParams.x);}if(isHairline){p0=affineMatrix*p0;p1=affineMatrix" |
| "*p1;p2=affineMatrix*p2;p3=affineMatrix*p3;lastControlPoint=affineMatrix*lastControlPoint" |
| ";}float2 tan0=$robust_normalize_diff(p0==p1?(p1==p2?p3:p2):p1,p0);float2 tan1" |
| "=$robust_normalize_diff(p3,p3==p2?(p2==p1?p0:p1):p2);if(tan0==float2(0.)){tan0" |
| "=float2(1.,0.);tan1=float2(-1.,0.);}float numEdgesInJoin;if(joinType>=0.){numEdgesInJoin" |
| "=(sign(joinType)+1.)+2.;}else{float2 prevTan=$robust_normalize_diff(p0,lastControlPoint" |
| ");float joinRads=acos($cosine_between_unit_vectors(prevTan,tan0));float numRadialSegmentsInJoin" |
| "=max(ceil(joinRads*numRadialSegmentsPerRadian),1.);numEdgesInJoin=numRadialSegmentsInJoin" |
| "+2.;numEdgesInJoin=min(numEdgesInJoin,maxEdges-2.);}float turn=cross_length_2d" |
| "(p2-p0,p3-p1);float combinedEdgeID=abs(edgeID)-numEdgesInJoin;if(combinedEdgeID" |
| "<0.){tan1=tan0;if(lastControlPoint!=p0){tan0=$robust_normalize_diff(p0,lastControlPoint" |
| ");}turn=cross_length_2d(tan0,tan1);}float cosTheta=$cosine_between_unit_vectors" |
| "(tan0,tan1);float rotation=acos(cosTheta);if(turn<0.){rotation=-rotation;}float" |
| " numRadialSegments;float strokeOutset=sign(edgeID);if(combinedEdgeID<0.){numRadialSegments" |
| "=numEdgesInJoin-2.;numParametricSegments=1.;p3=(p2=(p1=p0));combinedEdgeID+=" |
| "numRadialSegments+1.;float sinEpsilon=.01;bool tangentsNearlyParallel=abs(turn" |
| ")*inversesqrt(dot(tan0,tan0)*dot(tan1,tan1))<sinEpsilon;if(!tangentsNearlyParallel" |
| "||dot(tan0,tan1)<0.){if(combinedEdgeID>=0.){strokeOutset=turn<0.?min(strokeOutset" |
| ",0.):max(strokeOutset,0.);}}combinedEdgeID=max(combinedEdgeID,0.);}else{float" |
| " maxCombinedSegments=(maxEdges-numEdgesInJoin)-1.;numRadialSegments=max(ceil" |
| "(abs(rotation)*numRadialSegmentsPerRadian),1.);numRadialSegments=min(numRadialSegments" |
| ",maxCombinedSegments);numParametricSegments=min(numParametricSegments,(maxCombinedSegments" |
| "-numRadialSegments)+1.);}float radsPerSegment=rotation/numRadialSegments;float" |
| " numCombinedSegments=(numParametricSegments+numRadialSegments)-1.;bool isFinalEdge" |
| "=combinedEdgeID>=numCombinedSegments;if(combinedEdgeID>numCombinedSegments)" |
| "{strokeOutset=0.;}if(abs(edgeID)==2.&&joinType>0.){strokeOutset*=$miter_extent" |
| "(cosTheta,joinType);}float2 tangent;float2 strokeCoord;if(combinedEdgeID!=0." |
| "&&!isFinalEdge){float2 A;float2 B;float2 C=p1-p0;float2 D=p3-p0;if(w>=0.){C" |
| "*=w;B=.5*D-C;A=(w-1.)*D;p1*=w;}else{float2 E=p2-p1;B=E-C;A=fma(float2(-3.)," |
| "E,D);}float2 B_=B*(numParametricSegments*2.);float2 C_=C*(numParametricSegments" |
| "*numParametricSegments);float lastParametricEdgeID=0.;float maxParametricEdgeID" |
| "=min(numParametricSegments-1.,combinedEdgeID);float negAbsRadsPerSegment=-abs" |
| "(radsPerSegment);float maxRotation0=(1.+combinedEdgeID)*abs(radsPerSegment)" |
| ";for(int exp=4;exp>=0;--exp){float testParametricID=lastParametricEdgeID+exp2" |
| "(float(exp));if(testParametricID<=maxParametricEdgeID){float2 testTan=fma(float2" |
| "(testParametricID),A,B_);testTan=fma(float2(testParametricID),testTan,C_);float" |
| " cosRotation=dot(normalize(testTan),tan0);float maxRotation=fma(testParametricID" |
| ",negAbsRadsPerSegment,maxRotation0);maxRotation=min(maxRotation,$PI);if(cosRotation" |
| ">=cos(maxRotation)){lastParametricEdgeID=testParametricID;}}}float parametricT" |
| "=lastParametricEdgeID/numParametricSegments;float lastRadialEdgeID=combinedEdgeID" |
| "-lastParametricEdgeID;float angle0=acos(clamp(tan0.x,-1.,1.));angle0=tan0.y" |
| ">=0.?angle0:-angle0;float radialAngle=fma(lastRadialEdgeID,radsPerSegment,angle0" |
| ");tangent=float2(cos(radialAngle),sin(radialAngle));float2 norm=float2(-tangent" |
| ".y,tangent.x);float a=dot(norm,A);float b_over_2=dot(norm,B);float c=dot(norm" |
| ",C);float discr_over_4=max(b_over_2*b_over_2-a*c,0.);float q=sqrt(discr_over_4" |
| ");if(b_over_2>0.){q=-q;}q-=b_over_2;float _5qa=(-.5*q)*a;float2 root=abs(fma" |
| "(q,q,_5qa))<abs(fma(a,c,_5qa))?float2(q,a):float2(c,q);float radialT=root.y" |
| "!=0.?root.x/root.y:0.;radialT=clamp(radialT,0.,1.);if(lastRadialEdgeID==0.)" |
| "{radialT=0.;}float T=max(parametricT,radialT);float2 ab=$unchecked_mix(p0,p1" |
| ",T);float2 bc=$unchecked_mix(p1,p2,T);float2 cd=$unchecked_mix(p2,p3,T);float2" |
| " abc=$unchecked_mix(ab,bc,T);float2 bcd=$unchecked_mix(bc,cd,T);float2 abcd" |
| "=$unchecked_mix(abc,bcd,T);float u=$unchecked_mix(1.,w,T);float v=(w+1.)-u;" |
| "float uv=$unchecked_mix(u,v,T);if(T!=radialT){tangent=w>=0.?$robust_normalize_diff" |
| "(bc*u,ab*v):$robust_normalize_diff(bcd,abc);}strokeCoord=w>=0.?abc/uv:abcd;" |
| "}else{tangent=combinedEdgeID==0.?tan0:tan1;strokeCoord=combinedEdgeID==0.?p0" |
| ":p3;}float2 ortho=float2(tangent.y,-tangent.x);strokeCoord+=ortho*(strokeRadius" |
| "*strokeOutset);if(isHairline){return float4(strokeCoord+translate,inverse(affineMatrix" |
| ")*strokeCoord);}else{return float4(affineMatrix*strokeCoord+translate,strokeCoord" |
| ");}}float2 ortho(float2 v){return float2(-v.y,v.x);}float3 calc_line_eq(float2" |
| " v,float2 p){float2 n=ortho(v);return float3(n,-dot(n,p));}"; |
