799 void SkMatrix::ComputeInv(SkScalar dst[9], const SkScalar src[9], double invDet, bool isPersp) {  in ComputeInv()  argument
804 … dst[kMScaleX] = scross_dscale(src[kMScaleY], src[kMPersp2], src[kMTransY], src[kMPersp1], invDet);  in ComputeInv()
805 … dst[kMSkewX]  = scross_dscale(src[kMTransX], src[kMPersp1], src[kMSkewX],  src[kMPersp2], invDet);  in ComputeInv()
806 … dst[kMTransX] = scross_dscale(src[kMSkewX],  src[kMTransY], src[kMTransX], src[kMScaleY], invDet);  in ComputeInv()
808 … dst[kMSkewY]  = scross_dscale(src[kMTransY], src[kMPersp0], src[kMSkewY],  src[kMPersp2], invDet);  in ComputeInv()
809 … dst[kMScaleY] = scross_dscale(src[kMScaleX], src[kMPersp2], src[kMTransX], src[kMPersp0], invDet);  in ComputeInv()
810 … dst[kMTransY] = scross_dscale(src[kMTransX], src[kMSkewY],  src[kMScaleX], src[kMTransY], invDet);  in ComputeInv()
812 … dst[kMPersp0] = scross_dscale(src[kMSkewY],  src[kMPersp1], src[kMScaleY], src[kMPersp0], invDet);  in ComputeInv()
813 … dst[kMPersp1] = scross_dscale(src[kMSkewX],  src[kMPersp0], src[kMScaleX], src[kMPersp1], invDet);  in ComputeInv()
814 … dst[kMPersp2] = scross_dscale(src[kMScaleX], src[kMScaleY], src[kMSkewX],  src[kMSkewY],  invDet);  in ComputeInv()
816         dst[kMScaleX] = SkDoubleToScalar(src[kMScaleY] * invDet);  in ComputeInv()
817         dst[kMSkewX]  = SkDoubleToScalar(-src[kMSkewX] * invDet);  in ComputeInv()
818 …  dst[kMTransX] = dcross_dscale(src[kMSkewX], src[kMTransY], src[kMScaleY], src[kMTransX], invDet);  in ComputeInv()
820         dst[kMSkewY]  = SkDoubleToScalar(-src[kMSkewY] * invDet);  in ComputeInv()
821         dst[kMScaleY] = SkDoubleToScalar(src[kMScaleX] * invDet);  in ComputeInv()
822 …  dst[kMTransY] = dcross_dscale(src[kMSkewY], src[kMTransX], src[kMScaleX], src[kMTransY], invDet);  in ComputeInv()
873     double invDet = sk_inv_determinant(fMat, isPersp);  in invertNonIdentity()  local
875     if (invDet == 0) { // underflow  in invertNonIdentity()
888     ComputeInv(tmp->fMat, fMat, invDet, isPersp);  in invertNonIdentity()