diff --git a/toonz/sources/stdfx/igs_color_blend.cpp b/toonz/sources/stdfx/igs_color_blend.cpp
index 97a4d04..4628600 100644
--- a/toonz/sources/stdfx/igs_color_blend.cpp
+++ b/toonz/sources/stdfx/igs_color_blend.cpp
@@ -200,12 +200,11 @@ double overlay_ch_(const double dn, const double dn_a, const double up,
       dn, dn_a, up, up_a, up_opacity);
 }
 double soft_light_(const double dn, const double up) {
-  return (
-      (up < 0.5)
-          ? (dn + (dn - dn * dn) * (2 * up - 1))
-          : ((dn < 0.25)
-                 ? (dn + (2 * up - 1) * (((16 * dn - 12) * dn + 4) * dn - dn))
-                 : (dn + (2 * up - 1) * (sqrt(dn) - dn))));
+  return ((up < 0.5)
+              ? (dn + (dn - dn * dn) * (2 * up - 1))
+              : ((dn < 0.25) ? (dn + (2 * up - 1) *
+                                         (((16 * dn - 12) * dn + 4) * dn - dn))
+                             : (dn + (2 * up - 1) * (sqrt(dn) - dn))));
 }
 double soft_light_ch_(const double dn, const double dn_a, const double up,
                       const double up_a, const double up_opacity) {
@@ -268,12 +267,12 @@ R,G,Bそれぞれの値に、重み付けをして3で割り、
   return (0.298912 * dn_r + 0.586611 * dn_g + 0.114478 * dn_b) <
          (0.298912 * up_r + 0.586611 * up_g + 0.114478 * up_b);
 }
-}
+}  // namespace
 //--------------------------------------------------------------------
 // 01
 void igs::color::over(double &dn_r, double &dn_g, double &dn_b, double &dn_a,
                       const double up_r, double up_g, double up_b, double up_a,
-                      const double up_opacity) {
+                      const double up_opacity, const bool do_clamp) {
   if (up_a <= 0) {
     return;
   }                /* upが透明のときはdown値を表示 */
@@ -288,12 +287,16 @@ void igs::color::over(double &dn_r, double &dn_g, double &dn_b, double &dn_a,
   dn_b = up_add_dn_ch_(dn_b, up_b, up_a, up_opacity);
   dn_a = up_add_dn_ch_(dn_a, up_a, up_a, up_opacity);
 
-  clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  if (do_clamp)
+    clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  else
+    dn_a = clamp_ch_(dn_a);
 }
 // 02
 void igs::color::darken(double &dn_r, double &dn_g, double &dn_b, double &dn_a,
                         const double up_r, double up_g, double up_b,
-                        double up_a, const double up_opacity) {
+                        double up_a, const double up_opacity,
+                        const bool do_clamp) {
   if (up_a <= 0) {
     return;
   }                /* upが透明のときはdown値を表示 */
@@ -308,12 +311,16 @@ void igs::color::darken(double &dn_r, double &dn_g, double &dn_b, double &dn_a,
   dn_b = darken_ch_(dn_b, dn_a, up_b, up_a, up_opacity);
   dn_a = up_add_dn_ch_(dn_a, up_a, up_a, up_opacity);
 
-  clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  if (do_clamp)
+    clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  else
+    dn_a = clamp_ch_(dn_a);
 }
 // 03
 void igs::color::multiply(double &dn_r, double &dn_g, double &dn_b,
                           double &dn_a, const double up_r, double up_g,
-                          double up_b, double up_a, const double up_opacity) {
+                          double up_b, double up_a, const double up_opacity,
+                          const bool do_clamp) {
   if (up_a <= 0) {
     return;
   }                /* upが透明のときはdown値を表示 */
@@ -333,13 +340,17 @@ void igs::color::multiply(double &dn_r, double &dn_g, double &dn_b,
   dn_b = multiply_ch_(dn_b, dn_a, up_b, up_a, up_opacity);
   dn_a = up_add_dn_ch_(dn_a, up_a, up_a, up_opacity);
 
-  clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  if (do_clamp)
+    clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  else
+    dn_a = clamp_ch_(dn_a);
 }
 // 04
 void igs::color::color_burn(/* 焼き込みカラー */
                             double &dn_r, double &dn_g, double &dn_b,
                             double &dn_a, const double up_r, double up_g,
-                            double up_b, double up_a, const double up_opacity) {
+                            double up_b, double up_a, const double up_opacity,
+                            const bool do_clamp) {
   if (up_a <= 0) {
     return;
   }                /* upが透明のときはdown値を表示 */
@@ -354,14 +365,17 @@ void igs::color::color_burn(/* 焼き込みカラー */
   dn_b = color_burn_ch_(dn_b, dn_a, up_b, up_a, up_opacity);
   dn_a = up_add_dn_ch_(dn_a, up_a, up_a, up_opacity);
 
-  clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  if (do_clamp)
+    clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  else
+    dn_a = clamp_ch_(dn_a);
 }
 // 05
 void igs::color::linear_burn(/* 焼き込みリニア */
                              double &dn_r, double &dn_g, double &dn_b,
                              double &dn_a, const double up_r, double up_g,
-                             double up_b, double up_a,
-                             const double up_opacity) {
+                             double up_b, double up_a, const double up_opacity,
+                             const bool do_clamp) {
   if (up_a <= 0) {
     return;
   }                /* upが透明のときはdown値を表示 */
@@ -376,13 +390,16 @@ void igs::color::linear_burn(/* 焼き込みリニア */
   dn_b = linear_burn_ch_(dn_b, dn_a, up_b, up_a, up_opacity);
   dn_a = up_add_dn_ch_(dn_a, up_a, up_a, up_opacity);
 
-  clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  if (do_clamp)
+    clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  else
+    dn_a = clamp_ch_(dn_a);
 }
 // 06
 void igs::color::darker_color(double &dn_r, double &dn_g, double &dn_b,
                               double &dn_a, const double up_r, double up_g,
-                              double up_b, double up_a,
-                              const double up_opacity) {
+                              double up_b, double up_a, const double up_opacity,
+                              const bool do_clamp) {
   if (up_a <= 0) {
     return;
   }                /* upが透明のときはdown値を表示 */
@@ -399,12 +416,16 @@ void igs::color::darker_color(double &dn_r, double &dn_g, double &dn_b,
   dn_b = darker_color_ch_(dn_b, dn_a, up_b, up_a, up_opacity, up_lt_sw);
   dn_a = up_add_dn_ch_(dn_a, up_a, up_a, up_opacity);
 
-  clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  if (do_clamp)
+    clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  else
+    dn_a = clamp_ch_(dn_a);
 }
 // 07
 void igs::color::lighten(double &dn_r, double &dn_g, double &dn_b, double &dn_a,
                          const double up_r, double up_g, double up_b,
-                         double up_a, const double up_opacity) {
+                         double up_a, const double up_opacity,
+                         const bool do_clamp) {
   if (up_a <= 0) {
     return;
   }                /* upが透明のときはdown値を表示 */
@@ -419,12 +440,16 @@ void igs::color::lighten(double &dn_r, double &dn_g, double &dn_b, double &dn_a,
   dn_b = lighten_ch_(dn_b, dn_a, up_b, up_a, up_opacity);
   dn_a = up_add_dn_ch_(dn_a, up_a, up_a, up_opacity);
 
-  clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  if (do_clamp)
+    clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  else
+    dn_a = clamp_ch_(dn_a);
 }
 // 08
 void igs::color::screen(double &dn_r, double &dn_g, double &dn_b, double &dn_a,
                         const double up_r, double up_g, double up_b,
-                        double up_a, const double up_opacity) {
+                        double up_a, const double up_opacity,
+                        const bool do_clamp) {
   if (up_a <= 0) {
     return;
   }                /* upが透明のときはdown値を表示 */
@@ -439,14 +464,17 @@ void igs::color::screen(double &dn_r, double &dn_g, double &dn_b, double &dn_a,
   dn_b = screen_(dn_b, up_b * up_opacity);
   dn_a = up_add_dn_ch_(dn_a, up_a, up_a, up_opacity);
 
-  clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  if (do_clamp)
+    clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  else
+    dn_a = clamp_ch_(dn_a);
 }
 // 09
 void igs::color::color_dodge(/* 覆い焼きカラー */
                              double &dn_r, double &dn_g, double &dn_b,
                              double &dn_a, const double up_r, double up_g,
-                             double up_b, double up_a,
-                             const double up_opacity) {
+                             double up_b, double up_a, const double up_opacity,
+                             const bool do_clamp) {
   if (up_a <= 0) {
     return;
   }                /* upが透明のときはdown値を表示 */
@@ -461,14 +489,17 @@ void igs::color::color_dodge(/* 覆い焼きカラー */
   dn_b = color_dodge_ch_(dn_b, dn_a, up_b, up_a, up_opacity);
   dn_a = up_add_dn_ch_(dn_a, up_a, up_a, up_opacity);
 
-  clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  if (do_clamp)
+    clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  else
+    dn_a = clamp_ch_(dn_a);
 }
 // 10
 void igs::color::linear_dodge(/* 覆い焼きリニア(単純加算ではない) */
                               double &dn_r, double &dn_g, double &dn_b,
                               double &dn_a, const double up_r, double up_g,
-                              double up_b, double up_a,
-                              const double up_opacity) {
+                              double up_b, double up_a, const double up_opacity,
+                              const bool do_clamp) {
   if (up_a <= 0) {
     return;
   }                /* upが透明のときはdown値を表示 */
@@ -483,13 +514,16 @@ void igs::color::linear_dodge(/* 覆い焼きリニア(単純加算ではない)
   dn_b = linear_dodge_ch_(dn_b, dn_a, up_b, up_a, up_opacity);
   dn_a = up_add_dn_ch_(dn_a, up_a, up_a, up_opacity);
 
-  clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  if (do_clamp)
+    clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  else
+    dn_a = clamp_ch_(dn_a);
 }
 // 11
 void igs::color::lighter_color(double &dn_r, double &dn_g, double &dn_b,
                                double &dn_a, const double up_r, double up_g,
                                double up_b, double up_a,
-                               const double up_opacity) {
+                               const double up_opacity, const bool do_clamp) {
   if (up_a <= 0) {
     return;
   }                /* upが透明のときはdown値を表示 */
@@ -506,12 +540,16 @@ void igs::color::lighter_color(double &dn_r, double &dn_g, double &dn_b,
   dn_b = lighter_color_ch_(dn_b, dn_a, up_b, up_a, up_opacity, up_lt_sw);
   dn_a = up_add_dn_ch_(dn_a, up_a, up_a, up_opacity);
 
-  clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  if (do_clamp)
+    clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  else
+    dn_a = clamp_ch_(dn_a);
 }
 // 12
 void igs::color::overlay(double &dn_r, double &dn_g, double &dn_b, double &dn_a,
                          const double up_r, double up_g, double up_b,
-                         double up_a, const double up_opacity) {
+                         double up_a, const double up_opacity,
+                         const bool do_clamp) {
   if (up_a <= 0) {
     return;
   }                /* upが透明のときはdown値を表示 */
@@ -526,12 +564,16 @@ void igs::color::overlay(double &dn_r, double &dn_g, double &dn_b, double &dn_a,
   dn_b = overlay_ch_(dn_b, dn_a, up_b, up_a, up_opacity);
   dn_a = up_add_dn_ch_(dn_a, up_a, up_a, up_opacity);
 
-  clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  if (do_clamp)
+    clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  else
+    dn_a = clamp_ch_(dn_a);
 }
 // 13
 void igs::color::soft_light(double &dn_r, double &dn_g, double &dn_b,
                             double &dn_a, const double up_r, double up_g,
-                            double up_b, double up_a, const double up_opacity) {
+                            double up_b, double up_a, const double up_opacity,
+                            const bool do_clamp) {
   if (up_a <= 0) {
     return;
   }                /* upが透明のときはdown値を表示 */
@@ -546,12 +588,16 @@ void igs::color::soft_light(double &dn_r, double &dn_g, double &dn_b,
   dn_b = soft_light_ch_(dn_b, dn_a, up_b, up_a, up_opacity);
   dn_a = up_add_dn_ch_(dn_a, up_a, up_a, up_opacity);
 
-  clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  if (do_clamp)
+    clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  else
+    dn_a = clamp_ch_(dn_a);
 }
 // 14
 void igs::color::hard_light(double &dn_r, double &dn_g, double &dn_b,
                             double &dn_a, const double up_r, double up_g,
-                            double up_b, double up_a, const double up_opacity) {
+                            double up_b, double up_a, const double up_opacity,
+                            const bool do_clamp) {
   if (up_a <= 0) {
     return;
   }                /* upが透明のときはdown値を表示 */
@@ -566,13 +612,16 @@ void igs::color::hard_light(double &dn_r, double &dn_g, double &dn_b,
   dn_b = hard_light_ch_(dn_b, dn_a, up_b, up_a, up_opacity);
   dn_a = up_add_dn_ch_(dn_a, up_a, up_a, up_opacity);
 
-  clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  if (do_clamp)
+    clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  else
+    dn_a = clamp_ch_(dn_a);
 }
 // 15
 void igs::color::vivid_light(double &dn_r, double &dn_g, double &dn_b,
                              double &dn_a, const double up_r, double up_g,
-                             double up_b, double up_a,
-                             const double up_opacity) {
+                             double up_b, double up_a, const double up_opacity,
+                             const bool do_clamp) {
   if (up_a <= 0) {
     return;
   }                /* upが透明のときはdown値を表示 */
@@ -587,13 +636,16 @@ void igs::color::vivid_light(double &dn_r, double &dn_g, double &dn_b,
   dn_b = vivid_light_ch_(dn_b, dn_a, up_b, up_a, up_opacity);
   dn_a = up_add_dn_ch_(dn_a, up_a, up_a, up_opacity);
 
-  clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  if (do_clamp)
+    clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  else
+    dn_a = clamp_ch_(dn_a);
 }
 // 16
 void igs::color::linear_light(double &dn_r, double &dn_g, double &dn_b,
                               double &dn_a, const double up_r, double up_g,
-                              double up_b, double up_a,
-                              const double up_opacity) {
+                              double up_b, double up_a, const double up_opacity,
+                              const bool do_clamp) {
   if (up_a <= 0) {
     return;
   }                /* upが透明のときはdown値を表示 */
@@ -608,12 +660,16 @@ void igs::color::linear_light(double &dn_r, double &dn_g, double &dn_b,
   dn_b = linear_light_ch_(dn_b, dn_a, up_b, up_a, up_opacity);
   dn_a = up_add_dn_ch_(dn_a, up_a, up_a, up_opacity);
 
-  clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  if (do_clamp)
+    clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  else
+    dn_a = clamp_ch_(dn_a);
 }
 // 17
 void igs::color::pin_light(double &dn_r, double &dn_g, double &dn_b,
                            double &dn_a, const double up_r, double up_g,
-                           double up_b, double up_a, const double up_opacity) {
+                           double up_b, double up_a, const double up_opacity,
+                           const bool do_clamp) {
   if (up_a <= 0) {
     return;
   }                /* upが透明のときはdown値を表示 */
@@ -628,12 +684,16 @@ void igs::color::pin_light(double &dn_r, double &dn_g, double &dn_b,
   dn_b = pin_light_ch_(dn_b, dn_a, up_b, up_a, up_opacity);
   dn_a = up_add_dn_ch_(dn_a, up_a, up_a, up_opacity);
 
-  clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  if (do_clamp)
+    clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  else
+    dn_a = clamp_ch_(dn_a);
 }
 // 18
 void igs::color::hard_mix(double &dn_r, double &dn_g, double &dn_b,
                           double &dn_a, const double up_r, double up_g,
-                          double up_b, double up_a, const double up_opacity) {
+                          double up_b, double up_a, const double up_opacity,
+                          const bool do_clamp) {
   if (up_a <= 0) {
     return;
   }                /* upが透明のときはdown値を表示 */
@@ -648,7 +708,10 @@ void igs::color::hard_mix(double &dn_r, double &dn_g, double &dn_b,
   dn_b = hard_mix_ch_(dn_b, dn_a, up_b, up_a, up_opacity);
   dn_a = up_add_dn_ch_(dn_a, up_a, up_a, up_opacity);
 
-  clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  if (do_clamp)
+    clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  else
+    dn_a = clamp_ch_(dn_a);
 }
 //------------------------------------------------------------------------
 namespace {
@@ -656,12 +719,12 @@ double cross_dissolve_ch_(const double dn, const double up,
                           const double up_opacity) {
   return dn * (1.0 - up_opacity) + up * up_opacity;
 }
-}
+}  // namespace
 // 19
 void igs::color::cross_dissolve(double &dn_r, double &dn_g, double &dn_b,
                                 double &dn_a, const double up_r, double up_g,
                                 double up_b, double up_a,
-                                const double up_opacity) {
+                                const double up_opacity, const bool do_clamp) {
   if ((up_a <= 0) && (dn_a <= 0)) {
     return;
   } /* up/dnとも透明ならdn値を表示 */
@@ -672,13 +735,16 @@ void igs::color::cross_dissolve(double &dn_r, double &dn_g, double &dn_b,
   dn_b = cross_dissolve_ch_(dn_b, up_b, up_opacity);
   dn_a = cross_dissolve_ch_(dn_a, up_a, up_opacity);
 
-  clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  if (do_clamp)
+    clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  else
+    dn_a = clamp_ch_(dn_a);
 }
 // 20
 void igs::color::subtract(double &dn_r, double &dn_g, double &dn_b,
                           double &dn_a, const double up_r, double up_g,
                           double up_b, double up_a, const double up_opacity,
-                          const bool alpha_rendering_sw) {
+                          const bool alpha_rendering_sw, const bool do_clamp) {
   if (up_a <= 0) {
     return;
   }                /* upが透明のときはdown値を表示 */
@@ -696,13 +762,16 @@ void igs::color::subtract(double &dn_r, double &dn_g, double &dn_b,
     dn_a -= up_a * up_opacity;
   }
 
-  clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  if (do_clamp)
+    clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  else
+    dn_a = clamp_ch_(dn_a);
 }
 // 21
 void igs::color::add(/* 覆い焼きリニア */
                      double &dn_r, double &dn_g, double &dn_b, double &dn_a,
                      const double up_r, double up_g, double up_b, double up_a,
-                     const double up_opacity) {
+                     const double up_opacity, const bool do_clamp) {
   if (up_a <= 0) {
     return;
   }                /* upが透明のときはdown値を表示 */
@@ -718,12 +787,16 @@ void igs::color::add(/* 覆い焼きリニア */
   dn_b += up_b * up_opacity;
   dn_a += up_a * up_opacity;
 
-  clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  if (do_clamp)
+    clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  else
+    dn_a = clamp_ch_(dn_a);
 }
 // 22
 void igs::color::divide(double &dn_r, double &dn_g, double &dn_b, double &dn_a,
                         const double up_r, double up_g, double up_b,
-                        double up_a, const double up_opacity) {
+                        double up_a, const double up_opacity,
+                        const bool do_clamp) {
   if (up_a <= 0) {
     return;
   }                /* upが透明のときはdown値を表示 */
@@ -738,5 +811,8 @@ void igs::color::divide(double &dn_r, double &dn_g, double &dn_b, double &dn_a,
   dn_b = divide_ch_(dn_b, dn_a, up_b, up_a, up_opacity);
   dn_a = up_add_dn_ch_(dn_a, up_a, up_a, up_opacity);
 
-  clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  if (do_clamp)
+    clamp_rgba_(dn_r, dn_g, dn_b, dn_a); /* 0と1で範囲制限 */
+  else
+    dn_a = clamp_ch_(dn_a);
 }
diff --git a/toonz/sources/stdfx/igs_color_blend.h b/toonz/sources/stdfx/igs_color_blend.h
index a98aa83..f3c2778 100644
--- a/toonz/sources/stdfx/igs_color_blend.h
+++ b/toonz/sources/stdfx/igs_color_blend.h
@@ -9,97 +9,98 @@ namespace color {
 void over(/* アルファ合成（通常) */
           double &dn_r, double &dn_g, double &dn_b, double &dn_a,
           const double up_r, double up_g, double up_b, double up_a,
-          const double up_opacity);
+          const double up_opacity, const bool do_clamp = true);
 // 02
 void darken(double &dn_r, double &dn_g, double &dn_b, double &dn_a,
             const double up_r, double up_g, double up_b, double up_a,
-            const double up_opacity);
+            const double up_opacity, const bool do_clamp = true);
 // 03
 void multiply(double &dn_r, double &dn_g, double &dn_b, double &dn_a,
               const double up_r, double up_g, double up_b, double up_a,
-              const double up_opacity);
+              const double up_opacity, const bool do_clamp = true);
 // 04
 void color_burn(/* 焼き込みカラー */
                 double &dn_r, double &dn_g, double &dn_b, double &dn_a,
                 const double up_r, double up_g, double up_b, double up_a,
-                const double up_opacity);
+                const double up_opacity, const bool do_clamp = true);
 // 05
 void linear_burn(/* 焼き込みリニア */
                  double &dn_r, double &dn_g, double &dn_b, double &dn_a,
                  const double up_r, double up_g, double up_b, double up_a,
-                 const double up_opacity);
+                 const double up_opacity, const bool do_clamp = true);
 // 06
 void darker_color(double &dn_r, double &dn_g, double &dn_b, double &dn_a,
                   const double up_r, double up_g, double up_b, double up_a,
-                  const double up_opacity);
+                  const double up_opacity, const bool do_clamp = true);
 // 07
 void lighten(double &dn_r, double &dn_g, double &dn_b, double &dn_a,
              const double up_r, double up_g, double up_b, double up_a,
-             const double up_opacity);
+             const double up_opacity, const bool do_clamp = true);
 // 08
 void screen(double &dn_r, double &dn_g, double &dn_b, double &dn_a,
             const double up_r, double up_g, double up_b, double up_a,
-            const double up_opacity);
+            const double up_opacity, const bool do_clamp = true);
 // 09
 void color_dodge(/* 覆い焼きカラー */
                  double &dn_r, double &dn_g, double &dn_b, double &dn_a,
                  const double up_r, double up_g, double up_b, double up_a,
-                 const double up_opacity);
+                 const double up_opacity, const bool do_clamp = true);
 // 10
 void linear_dodge(/* 覆い焼きリニア(単純加算ではない) */
                   double &dn_r, double &dn_g, double &dn_b, double &dn_a,
                   const double up_r, double up_g, double up_b, double up_a,
-                  const double up_opacity);
+                  const double up_opacity, const bool do_clamp = true);
 // 11
 void lighter_color(double &dn_r, double &dn_g, double &dn_b, double &dn_a,
                    const double up_r, double up_g, double up_b, double up_a,
-                   const double up_opacity);
+                   const double up_opacity, const bool do_clamp = true);
 // 12
 void overlay(double &dn_r, double &dn_g, double &dn_b, double &dn_a,
              const double up_r, double up_g, double up_b, double up_a,
-             const double up_opacity);
+             const double up_opacity, const bool do_clamp = true);
 // 13
 void soft_light(double &dn_r, double &dn_g, double &dn_b, double &dn_a,
                 const double up_r, double up_g, double up_b, double up_a,
-                const double up_opacity);
+                const double up_opacity, const bool do_clamp = true);
 // 14
 void hard_light(double &dn_r, double &dn_g, double &dn_b, double &dn_a,
                 const double up_r, double up_g, double up_b, double up_a,
-                const double up_opacity);
+                const double up_opacity, const bool do_clamp = true);
 // 15
 void vivid_light(double &dn_r, double &dn_g, double &dn_b, double &dn_a,
                  const double up_r, double up_g, double up_b, double up_a,
-                 const double up_opacity);
+                 const double up_opacity, const bool do_clamp = true);
 // 16
 void linear_light(double &dn_r, double &dn_g, double &dn_b, double &dn_a,
                   const double up_r, double up_g, double up_b, double up_a,
-                  const double up_opacity);
+                  const double up_opacity, const bool do_clamp = true);
 // 17
 void pin_light(double &dn_r, double &dn_g, double &dn_b, double &dn_a,
                const double up_r, double up_g, double up_b, double up_a,
-               const double up_opacity);
+               const double up_opacity, const bool do_clamp = true);
 // 18
 void hard_mix(double &dn_r, double &dn_g, double &dn_b, double &dn_a,
               const double up_r, double up_g, double up_b, double up_a,
-              const double up_opacity);
+              const double up_opacity, const bool do_clamp = true);
 //-----------------
 // 19
 void cross_dissolve(double &dn_r, double &dn_g, double &dn_b, double &dn_a,
                     const double up_r, double up_g, double up_b, double up_a,
-                    const double up_opacity);
+                    const double up_opacity, const bool do_clamp = true);
 // 20
 void subtract(double &dn_r, double &dn_g, double &dn_b, double &dn_a,
               const double up_r, double up_g, double up_b, double up_a,
-              const double up_opacity, const bool alpha_rendering_sw);
+              const double up_opacity, const bool alpha_rendering_sw,
+              const bool do_clamp = true);
 // 21
 void add(/* 単純加算 */
          double &dn_r, double &dn_g, double &dn_b, double &dn_a,
          const double up_r, double up_g, double up_b, double up_a,
-         const double up_opacity);
+         const double up_opacity, const bool do_clamp = true);
 // 22
 void divide(double &dn_r, double &dn_g, double &dn_b, double &dn_a,
             const double up_r, double up_g, double up_b, double up_a,
-            const double up_opacity);
-}
-}
+            const double up_opacity, const bool do_clamp = true);
+}  // namespace color
+}  // namespace igs
 #endif /* !igs_color_blend_h */
diff --git a/toonz/sources/stdfx/ino_blend_add.cpp b/toonz/sources/stdfx/ino_blend_add.cpp
index 6bcebdc..fd5df25 100644
--- a/toonz/sources/stdfx/ino_blend_add.cpp
+++ b/toonz/sources/stdfx/ino_blend_add.cpp
@@ -27,8 +27,10 @@ public:
   void brendKernel(double& dnr, double& dng, double& dnb, double& dna,
                    const double upr, double upg, double upb, double upa,
                    const double up_opacity,
-                   const bool alpha_rendering_sw = true) override {
-    igs::color::add(dnr, dng, dnb, dna, upr, upg, upb, upa, up_opacity);
+                   const bool alpha_rendering_sw = true,
+                   const bool is_xyz             = false) override {
+    igs::color::add(dnr, dng, dnb, dna, upr, upg, upb, upa, up_opacity,
+                    !is_xyz);
   }
 };
 FX_PLUGIN_IDENTIFIER(ino_blend_add, "inoAddFx");
\ No newline at end of file
diff --git a/toonz/sources/stdfx/ino_blend_color_burn.cpp b/toonz/sources/stdfx/ino_blend_color_burn.cpp
index 6c143fe..8f1741a 100644
--- a/toonz/sources/stdfx/ino_blend_color_burn.cpp
+++ b/toonz/sources/stdfx/ino_blend_color_burn.cpp
@@ -14,8 +14,10 @@ public:
   void brendKernel(double& dnr, double& dng, double& dnb, double& dna,
                    const double upr, double upg, double upb, double upa,
                    const double up_opacity,
-                   const bool alpha_rendering_sw = true) override {
-    igs::color::color_burn(dnr, dng, dnb, dna, upr, upg, upb, upa, up_opacity);
+                   const bool alpha_rendering_sw = true,
+                   const bool is_xyz             = false) override {
+    igs::color::color_burn(dnr, dng, dnb, dna, upr, upg, upb, upa, up_opacity,
+                           !is_xyz);
   }
 };
 FX_PLUGIN_IDENTIFIER(ino_blend_color_burn, "inoColorBurnFx");
diff --git a/toonz/sources/stdfx/ino_blend_color_dodge.cpp b/toonz/sources/stdfx/ino_blend_color_dodge.cpp
index eaf4180..7104cbb 100644
--- a/toonz/sources/stdfx/ino_blend_color_dodge.cpp
+++ b/toonz/sources/stdfx/ino_blend_color_dodge.cpp
@@ -14,8 +14,10 @@ public:
   void brendKernel(double& dnr, double& dng, double& dnb, double& dna,
                    const double upr, double upg, double upb, double upa,
                    const double up_opacity,
-                   const bool alpha_rendering_sw = true) override {
-    igs::color::color_dodge(dnr, dng, dnb, dna, upr, upg, upb, upa, up_opacity);
+                   const bool alpha_rendering_sw = true,
+                   const bool is_xyz             = false) override {
+    igs::color::color_dodge(dnr, dng, dnb, dna, upr, upg, upb, upa, up_opacity,
+                            !is_xyz);
   }
 };
 FX_PLUGIN_IDENTIFIER(ino_blend_color_dodge, "inoColorDodgeFx");
diff --git a/toonz/sources/stdfx/ino_blend_cross_dissolve.cpp b/toonz/sources/stdfx/ino_blend_cross_dissolve.cpp
index c323c50..7aa8f13 100644
--- a/toonz/sources/stdfx/ino_blend_cross_dissolve.cpp
+++ b/toonz/sources/stdfx/ino_blend_cross_dissolve.cpp
@@ -14,9 +14,10 @@ public:
   void brendKernel(double& dnr, double& dng, double& dnb, double& dna,
                    const double upr, double upg, double upb, double upa,
                    const double up_opacity,
-                   const bool alpha_rendering_sw = true) override {
+                   const bool alpha_rendering_sw = true,
+                   const bool is_xyz             = false) override {
     igs::color::cross_dissolve(dnr, dng, dnb, dna, upr, upg, upb, upa,
-                               up_opacity);
+                               up_opacity, !is_xyz);
   }
 };
 FX_PLUGIN_IDENTIFIER(ino_blend_cross_dissolve, "inoCrossDissolveFx");
diff --git a/toonz/sources/stdfx/ino_blend_darken.cpp b/toonz/sources/stdfx/ino_blend_darken.cpp
index 6015bb4..eb7a533 100644
--- a/toonz/sources/stdfx/ino_blend_darken.cpp
+++ b/toonz/sources/stdfx/ino_blend_darken.cpp
@@ -14,8 +14,10 @@ public:
   void brendKernel(double& dnr, double& dng, double& dnb, double& dna,
                    const double upr, double upg, double upb, double upa,
                    const double up_opacity,
-                   const bool alpha_rendering_sw = true) override {
-    igs::color::darken(dnr, dng, dnb, dna, upr, upg, upb, upa, up_opacity);
+                   const bool alpha_rendering_sw = true,
+                   const bool is_xyz             = false) override {
+    igs::color::darken(dnr, dng, dnb, dna, upr, upg, upb, upa, up_opacity,
+                       !is_xyz);
   }
 };
 FX_PLUGIN_IDENTIFIER(ino_blend_darken, "inoDarkenFx");
diff --git a/toonz/sources/stdfx/ino_blend_darker_color.cpp b/toonz/sources/stdfx/ino_blend_darker_color.cpp
index 3e2c67c..1b14055 100644
--- a/toonz/sources/stdfx/ino_blend_darker_color.cpp
+++ b/toonz/sources/stdfx/ino_blend_darker_color.cpp
@@ -14,9 +14,10 @@ public:
   void brendKernel(double& dnr, double& dng, double& dnb, double& dna,
                    const double upr, double upg, double upb, double upa,
                    const double up_opacity,
-                   const bool alpha_rendering_sw = true) override {
-    igs::color::darker_color(dnr, dng, dnb, dna, upr, upg, upb, upa,
-                             up_opacity);
+                   const bool alpha_rendering_sw = true,
+                   const bool is_xyz             = false) override {
+    igs::color::darker_color(dnr, dng, dnb, dna, upr, upg, upb, upa, up_opacity,
+                             !is_xyz);
   }
 };
 FX_PLUGIN_IDENTIFIER(ino_blend_darker_color, "inoDarkerColorFx");
diff --git a/toonz/sources/stdfx/ino_blend_divide.cpp b/toonz/sources/stdfx/ino_blend_divide.cpp
index 8d91a19..d08b27b 100644
--- a/toonz/sources/stdfx/ino_blend_divide.cpp
+++ b/toonz/sources/stdfx/ino_blend_divide.cpp
@@ -14,8 +14,10 @@ public:
   void brendKernel(double& dnr, double& dng, double& dnb, double& dna,
                    const double upr, double upg, double upb, double upa,
                    const double up_opacity,
-                   const bool alpha_rendering_sw = true) override {
-    igs::color::divide(dnr, dng, dnb, dna, upr, upg, upb, upa, up_opacity);
+                   const bool alpha_rendering_sw = true,
+                   const bool is_xyz             = false) override {
+    igs::color::divide(dnr, dng, dnb, dna, upr, upg, upb, upa, up_opacity,
+                       !is_xyz);
   }
 };
 FX_PLUGIN_IDENTIFIER(ino_blend_divide, "inoDivideFx");
diff --git a/toonz/sources/stdfx/ino_blend_hard_light.cpp b/toonz/sources/stdfx/ino_blend_hard_light.cpp
index 5a83902..68b5d96 100644
--- a/toonz/sources/stdfx/ino_blend_hard_light.cpp
+++ b/toonz/sources/stdfx/ino_blend_hard_light.cpp
@@ -14,8 +14,10 @@ public:
   void brendKernel(double& dnr, double& dng, double& dnb, double& dna,
                    const double upr, double upg, double upb, double upa,
                    const double up_opacity,
-                   const bool alpha_rendering_sw = true) override {
-    igs::color::hard_light(dnr, dng, dnb, dna, upr, upg, upb, upa, up_opacity);
+                   const bool alpha_rendering_sw = true,
+                   const bool is_xyz             = false) override {
+    igs::color::hard_light(dnr, dng, dnb, dna, upr, upg, upb, upa, up_opacity,
+                           !is_xyz);
   }
 };
 FX_PLUGIN_IDENTIFIER(ino_blend_hard_light, "inoHardLightFx");
diff --git a/toonz/sources/stdfx/ino_blend_hard_mix.cpp b/toonz/sources/stdfx/ino_blend_hard_mix.cpp
index 992bac7..a09ccd3 100644
--- a/toonz/sources/stdfx/ino_blend_hard_mix.cpp
+++ b/toonz/sources/stdfx/ino_blend_hard_mix.cpp
@@ -14,8 +14,10 @@ public:
   void brendKernel(double& dnr, double& dng, double& dnb, double& dna,
                    const double upr, double upg, double upb, double upa,
                    const double up_opacity,
-                   const bool alpha_rendering_sw = true) override {
-    igs::color::hard_mix(dnr, dng, dnb, dna, upr, upg, upb, upa, up_opacity);
+                   const bool alpha_rendering_sw = true,
+                   const bool is_xyz             = false) override {
+    igs::color::hard_mix(dnr, dng, dnb, dna, upr, upg, upb, upa, up_opacity,
+                         !is_xyz);
   }
 };
 FX_PLUGIN_IDENTIFIER(ino_blend_hard_mix, "inoHardMixFx");
diff --git a/toonz/sources/stdfx/ino_blend_lighten.cpp b/toonz/sources/stdfx/ino_blend_lighten.cpp
index a70810d..f1ac551 100644
--- a/toonz/sources/stdfx/ino_blend_lighten.cpp
+++ b/toonz/sources/stdfx/ino_blend_lighten.cpp
@@ -14,8 +14,10 @@ public:
   void brendKernel(double& dnr, double& dng, double& dnb, double& dna,
                    const double upr, double upg, double upb, double upa,
                    const double up_opacity,
-                   const bool alpha_rendering_sw = true) override {
-    igs::color::lighten(dnr, dng, dnb, dna, upr, upg, upb, upa, up_opacity);
+                   const bool alpha_rendering_sw = true,
+                   const bool is_xyz             = false) override {
+    igs::color::lighten(dnr, dng, dnb, dna, upr, upg, upb, upa, up_opacity,
+                        !is_xyz);
   }
 };
 FX_PLUGIN_IDENTIFIER(ino_blend_lighten, "inoLightenFx");
diff --git a/toonz/sources/stdfx/ino_blend_lighter_color.cpp b/toonz/sources/stdfx/ino_blend_lighter_color.cpp
index d491082..e0e0fb3 100644
--- a/toonz/sources/stdfx/ino_blend_lighter_color.cpp
+++ b/toonz/sources/stdfx/ino_blend_lighter_color.cpp
@@ -14,9 +14,10 @@ public:
   void brendKernel(double& dnr, double& dng, double& dnb, double& dna,
                    const double upr, double upg, double upb, double upa,
                    const double up_opacity,
-                   const bool alpha_rendering_sw = true) override {
+                   const bool alpha_rendering_sw = true,
+                   const bool is_xyz             = false) override {
     igs::color::lighter_color(dnr, dng, dnb, dna, upr, upg, upb, upa,
-                              up_opacity);
+                              up_opacity, !is_xyz);
   }
 };
 FX_PLUGIN_IDENTIFIER(ino_blend_lighter_color, "inoLighterColorFx");
diff --git a/toonz/sources/stdfx/ino_blend_linear_burn.cpp b/toonz/sources/stdfx/ino_blend_linear_burn.cpp
index 7dffc0b..03e036f 100644
--- a/toonz/sources/stdfx/ino_blend_linear_burn.cpp
+++ b/toonz/sources/stdfx/ino_blend_linear_burn.cpp
@@ -14,8 +14,10 @@ public:
   void brendKernel(double& dnr, double& dng, double& dnb, double& dna,
                    const double upr, double upg, double upb, double upa,
                    const double up_opacity,
-                   const bool alpha_rendering_sw = true) override {
-    igs::color::linear_burn(dnr, dng, dnb, dna, upr, upg, upb, upa, up_opacity);
+                   const bool alpha_rendering_sw = true,
+                   const bool is_xyz             = false) override {
+    igs::color::linear_burn(dnr, dng, dnb, dna, upr, upg, upb, upa, up_opacity,
+                            !is_xyz);
   }
 };
 FX_PLUGIN_IDENTIFIER(ino_blend_linear_burn, "inoLinearBurnFx");
diff --git a/toonz/sources/stdfx/ino_blend_linear_dodge.cpp b/toonz/sources/stdfx/ino_blend_linear_dodge.cpp
index aecbe55..86a8c26 100644
--- a/toonz/sources/stdfx/ino_blend_linear_dodge.cpp
+++ b/toonz/sources/stdfx/ino_blend_linear_dodge.cpp
@@ -14,9 +14,10 @@ public:
   void brendKernel(double& dnr, double& dng, double& dnb, double& dna,
                    const double upr, double upg, double upb, double upa,
                    const double up_opacity,
-                   const bool alpha_rendering_sw = true) override {
-    igs::color::linear_dodge(dnr, dng, dnb, dna, upr, upg, upb, upa,
-                             up_opacity);
+                   const bool alpha_rendering_sw = true,
+                   const bool is_xyz             = false) override {
+    igs::color::linear_dodge(dnr, dng, dnb, dna, upr, upg, upb, upa, up_opacity,
+                             !is_xyz);
   }
 };
 FX_PLUGIN_IDENTIFIER(ino_blend_linear_dodge, "inoLinearDodgeFx");
diff --git a/toonz/sources/stdfx/ino_blend_linear_light.cpp b/toonz/sources/stdfx/ino_blend_linear_light.cpp
index ec4083e..2bbe0b2 100644
--- a/toonz/sources/stdfx/ino_blend_linear_light.cpp
+++ b/toonz/sources/stdfx/ino_blend_linear_light.cpp
@@ -14,9 +14,10 @@ public:
   void brendKernel(double& dnr, double& dng, double& dnb, double& dna,
                    const double upr, double upg, double upb, double upa,
                    const double up_opacity,
-                   const bool alpha_rendering_sw = true) override {
-    igs::color::linear_light(dnr, dng, dnb, dna, upr, upg, upb, upa,
-                             up_opacity);
+                   const bool alpha_rendering_sw = true,
+                   const bool is_xyz             = false) override {
+    igs::color::linear_light(dnr, dng, dnb, dna, upr, upg, upb, upa, up_opacity,
+                             !is_xyz);
   }
 };
 FX_PLUGIN_IDENTIFIER(ino_blend_linear_light, "inoLinearLightFx");
diff --git a/toonz/sources/stdfx/ino_blend_multiply.cpp b/toonz/sources/stdfx/ino_blend_multiply.cpp
index 16fb671..961f21b 100644
--- a/toonz/sources/stdfx/ino_blend_multiply.cpp
+++ b/toonz/sources/stdfx/ino_blend_multiply.cpp
@@ -14,8 +14,10 @@ public:
   void brendKernel(double& dnr, double& dng, double& dnb, double& dna,
                    const double upr, double upg, double upb, double upa,
                    const double up_opacity,
-                   const bool alpha_rendering_sw = true) override {
-    igs::color::multiply(dnr, dng, dnb, dna, upr, upg, upb, upa, up_opacity);
+                   const bool alpha_rendering_sw = true,
+                   const bool is_xyz             = false) override {
+    igs::color::multiply(dnr, dng, dnb, dna, upr, upg, upb, upa, up_opacity,
+                         !is_xyz);
   }
 };
 FX_PLUGIN_IDENTIFIER(ino_blend_multiply, "inoMultiplyFx");
diff --git a/toonz/sources/stdfx/ino_blend_over.cpp b/toonz/sources/stdfx/ino_blend_over.cpp
index d8cd1ad..e053a43 100644
--- a/toonz/sources/stdfx/ino_blend_over.cpp
+++ b/toonz/sources/stdfx/ino_blend_over.cpp
@@ -14,8 +14,10 @@ public:
   void brendKernel(double& dnr, double& dng, double& dnb, double& dna,
                    const double upr, double upg, double upb, double upa,
                    const double up_opacity,
-                   const bool alpha_rendering_sw = true) override {
-    igs::color::over(dnr, dng, dnb, dna, upr, upg, upb, upa, up_opacity);
+                   const bool alpha_rendering_sw = true,
+                   const bool is_xyz             = false) override {
+    igs::color::over(dnr, dng, dnb, dna, upr, upg, upb, upa, up_opacity,
+                     !is_xyz);
   }
 };
 FX_PLUGIN_IDENTIFIER(ino_blend_over, "inoOverFx");
diff --git a/toonz/sources/stdfx/ino_blend_overlay.cpp b/toonz/sources/stdfx/ino_blend_overlay.cpp
index be0e4c9..a7b3244 100644
--- a/toonz/sources/stdfx/ino_blend_overlay.cpp
+++ b/toonz/sources/stdfx/ino_blend_overlay.cpp
@@ -14,8 +14,10 @@ public:
   void brendKernel(double& dnr, double& dng, double& dnb, double& dna,
                    const double upr, double upg, double upb, double upa,
                    const double up_opacity,
-                   const bool alpha_rendering_sw = true) override {
-    igs::color::overlay(dnr, dng, dnb, dna, upr, upg, upb, upa, up_opacity);
+                   const bool alpha_rendering_sw = true,
+                   const bool is_xyz             = false) override {
+    igs::color::overlay(dnr, dng, dnb, dna, upr, upg, upb, upa, up_opacity,
+                        !is_xyz);
   }
 };
 FX_PLUGIN_IDENTIFIER(ino_blend_overlay, "inoOverlayFx");
diff --git a/toonz/sources/stdfx/ino_blend_pin_light.cpp b/toonz/sources/stdfx/ino_blend_pin_light.cpp
index fe9cd2b..bbfdb40 100644
--- a/toonz/sources/stdfx/ino_blend_pin_light.cpp
+++ b/toonz/sources/stdfx/ino_blend_pin_light.cpp
@@ -14,8 +14,10 @@ public:
   void brendKernel(double& dnr, double& dng, double& dnb, double& dna,
                    const double upr, double upg, double upb, double upa,
                    const double up_opacity,
-                   const bool alpha_rendering_sw = true) override {
-    igs::color::pin_light(dnr, dng, dnb, dna, upr, upg, upb, upa, up_opacity);
+                   const bool alpha_rendering_sw = true,
+                   const bool is_xyz             = false) override {
+    igs::color::pin_light(dnr, dng, dnb, dna, upr, upg, upb, upa, up_opacity,
+                          !is_xyz);
   }
 };
 FX_PLUGIN_IDENTIFIER(ino_blend_pin_light, "inoPinLightFx");
diff --git a/toonz/sources/stdfx/ino_blend_screen.cpp b/toonz/sources/stdfx/ino_blend_screen.cpp
index 00b32b8..d7b82c8 100644
--- a/toonz/sources/stdfx/ino_blend_screen.cpp
+++ b/toonz/sources/stdfx/ino_blend_screen.cpp
@@ -14,8 +14,10 @@ public:
   void brendKernel(double& dnr, double& dng, double& dnb, double& dna,
                    const double upr, double upg, double upb, double upa,
                    const double up_opacity,
-                   const bool alpha_rendering_sw = true) override {
-    igs::color::screen(dnr, dng, dnb, dna, upr, upg, upb, upa, up_opacity);
+                   const bool alpha_rendering_sw = true,
+                   const bool is_xyz             = false) override {
+    igs::color::screen(dnr, dng, dnb, dna, upr, upg, upb, upa, up_opacity,
+                       !is_xyz);
   }
 };
 FX_PLUGIN_IDENTIFIER(ino_blend_screen, "inoScreenFx");
diff --git a/toonz/sources/stdfx/ino_blend_soft_light.cpp b/toonz/sources/stdfx/ino_blend_soft_light.cpp
index 3865fb1..09da6db 100644
--- a/toonz/sources/stdfx/ino_blend_soft_light.cpp
+++ b/toonz/sources/stdfx/ino_blend_soft_light.cpp
@@ -14,8 +14,10 @@ public:
   void brendKernel(double& dnr, double& dng, double& dnb, double& dna,
                    const double upr, double upg, double upb, double upa,
                    const double up_opacity,
-                   const bool alpha_rendering_sw = true) override {
-    igs::color::soft_light(dnr, dng, dnb, dna, upr, upg, upb, upa, up_opacity);
+                   const bool alpha_rendering_sw = true,
+                   const bool is_xyz             = false) override {
+    igs::color::soft_light(dnr, dng, dnb, dna, upr, upg, upb, upa, up_opacity,
+                           !is_xyz);
   }
 };
 FX_PLUGIN_IDENTIFIER(ino_blend_soft_light, "inoSoftLightFx");
diff --git a/toonz/sources/stdfx/ino_blend_subtract.cpp b/toonz/sources/stdfx/ino_blend_subtract.cpp
index e3f52f6..7fe57f3 100644
--- a/toonz/sources/stdfx/ino_blend_subtract.cpp
+++ b/toonz/sources/stdfx/ino_blend_subtract.cpp
@@ -15,9 +15,10 @@ public:
   void brendKernel(double& dnr, double& dng, double& dnb, double& dna,
                    const double upr, double upg, double upb, double upa,
                    const double up_opacity,
-                   const bool alpha_rendering_sw = true) override {
+                   const bool alpha_rendering_sw = true,
+                   const bool is_xyz             = false) override {
     igs::color::subtract(dnr, dng, dnb, dna, upr, upg, upb, upa, up_opacity,
-                         alpha_rendering_sw);
+                         alpha_rendering_sw, !is_xyz);
   }
 };
 FX_PLUGIN_IDENTIFIER(ino_blend_subtract, "inoSubtractFx");
diff --git a/toonz/sources/stdfx/ino_blend_vivid_light.cpp b/toonz/sources/stdfx/ino_blend_vivid_light.cpp
index 918e6f9..23cd459 100644
--- a/toonz/sources/stdfx/ino_blend_vivid_light.cpp
+++ b/toonz/sources/stdfx/ino_blend_vivid_light.cpp
@@ -14,8 +14,10 @@ public:
   void brendKernel(double& dnr, double& dng, double& dnb, double& dna,
                    const double upr, double upg, double upb, double upa,
                    const double up_opacity,
-                   const bool alpha_rendering_sw = true) override {
-    igs::color::vivid_light(dnr, dng, dnb, dna, upr, upg, upb, upa, up_opacity);
+                   const bool alpha_rendering_sw = true,
+                   const bool is_xyz             = false) override {
+    igs::color::vivid_light(dnr, dng, dnb, dna, upr, upg, upb, upa, up_opacity,
+                            !is_xyz);
   }
 };
 FX_PLUGIN_IDENTIFIER(ino_blend_vivid_light, "inoVividLightFx");
diff --git a/toonz/sources/stdfx/ino_common.cpp b/toonz/sources/stdfx/ino_common.cpp
index ef95829..867299e 100644
--- a/toonz/sources/stdfx/ino_common.cpp
+++ b/toonz/sources/stdfx/ino_common.cpp
@@ -496,7 +496,7 @@ void TBlendForeBackRasterFx::linearTmpl(TRasterPT<T> dn_ras_out,
       to_xyz(upXYZ, upBGR);
 
       brendKernel(dnXYZ[0], dnXYZ[1], dnXYZ[2], dna, upXYZ[0], upXYZ[1],
-                  upXYZ[2], upa, tmp_opacity, alpha_rendering_sw);
+                  upXYZ[2], upa, tmp_opacity, alpha_rendering_sw, true);
 
       to_bgr(dnBGR, dnXYZ);
 
diff --git a/toonz/sources/stdfx/ino_common.h b/toonz/sources/stdfx/ino_common.h
index e4efb10..8247691 100644
--- a/toonz/sources/stdfx/ino_common.h
+++ b/toonz/sources/stdfx/ino_common.h
@@ -57,29 +57,31 @@ protected:
   TBoolParamP m_alpha_rendering;  // optional
 
   void dryComputeUpAndDown(TRectD& rect, double frame,
-    const TRenderSettings& rs,
-    bool upComputesWholeTile = false);
+                           const TRenderSettings& rs,
+                           bool upComputesWholeTile = false);
 
   void doComputeFx(TRasterP& dn_ras_out, const TRasterP& up_ras,
-    const TPoint& pos, const double up_opacity,
-    const double gamma);
+                   const TPoint& pos, const double up_opacity,
+                   const double gamma);
 
   template <class T, class Q>
   void nonlinearTmpl(TRasterPT<T> dn_ras_out, const TRasterPT<T>& up_ras,
-    const double up_opacity);
+                     const double up_opacity);
 
   template <class T, class Q>
   void linearTmpl(TRasterPT<T> dn_ras_out, const TRasterPT<T>& up_ras,
-    const double up_opacity, const double gamma);
+                  const double up_opacity, const double gamma);
 
+  // when compute in xyz color space, do not clamp channel values in the kernel
   virtual void brendKernel(double& dnr, double& dng, double& dnb, double& dna,
-    const double up_, double upg, double upb, double upa,
-    const double upopacity,
-    const bool alpha_rendering_sw = true) = 0;
+                           const double up_, double upg, double upb, double upa,
+                           const double upopacity,
+                           const bool alpha_rendering_sw = true,
+                           const bool is_xyz             = false) = 0;
 
   void computeUpAndDown(TTile& tile, double frame, const TRenderSettings& rs,
-    TRasterP& dn_ras, TRasterP& up_ras,
-    bool upComputesWholeTile = false);
+                        TRasterP& dn_ras, TRasterP& up_ras,
+                        bool upComputesWholeTile = false);
 
 public:
   TBlendForeBackRasterFx(bool clipping_mask, bool has_alpha_option = false);