diff --git a/core/fxge/agg/cfx_agg_bitmapcomposer.cpp b/core/fxge/agg/cfx_agg_bitmapcomposer.cpp
index 48a7440..7673212 100644
--- a/core/fxge/agg/cfx_agg_bitmapcomposer.cpp
+++ b/core/fxge/agg/cfx_agg_bitmapcomposer.cpp
@@ -58,8 +58,7 @@
   DCHECK_NE(src_format, FXDIB_Format::k1bppRgb);
   m_SrcFormat = src_format;
   if (!m_Compositor.Init(m_pBitmap->GetFormat(), src_format, src_palette,
-                         m_MaskColor, m_BlendMode,
-                         m_pClipMask || m_Alpha != 1.0f, m_bRgbByteOrder)) {
+                         m_MaskColor, m_BlendMode, m_bRgbByteOrder)) {
     return false;
   }
   if (m_bVertical) {
diff --git a/core/fxge/dib/cfx_dibitmap.cpp b/core/fxge/dib/cfx_dibitmap.cpp
index 2d996f3..525c7ef 100644
--- a/core/fxge/dib/cfx_dibitmap.cpp
+++ b/core/fxge/dib/cfx_dibitmap.cpp
@@ -584,7 +584,7 @@
   CFX_ScanlineCompositor compositor;
   if (!compositor.Init(GetFormat(), source->GetFormat(),
                        source->GetPaletteSpan(), 0, blend_type,
-                       pClipMask != nullptr, bRgbByteOrder)) {
+                       bRgbByteOrder)) {
     return false;
   }
   const int dest_bytes_per_pixel = GetBPP() / 8;
@@ -656,7 +656,7 @@
   const int bytes_per_pixel = GetBPP() / 8;
   CFX_ScanlineCompositor compositor;
   if (!compositor.Init(GetFormat(), pMask->GetFormat(), {}, color, blend_type,
-                       pClipMask != nullptr, bRgbByteOrder)) {
+                       bRgbByteOrder)) {
     return false;
   }
   for (int row = 0; row < height; row++) {
diff --git a/core/fxge/dib/cfx_scanlinecompositor.cpp b/core/fxge/dib/cfx_scanlinecompositor.cpp
index 0785d8a..c9d190a 100644
--- a/core/fxge/dib/cfx_scanlinecompositor.cpp
+++ b/core/fxge/dib/cfx_scanlinecompositor.cpp
@@ -2184,13 +2184,11 @@
                                   pdfium::span<const uint32_t> src_palette,
                                   uint32_t mask_color,
                                   BlendMode blend_type,
-                                  bool bClip,
                                   bool bRgbByteOrder) {
   m_SrcFormat = src_format;
   m_DestFormat = dest_format;
   m_BlendType = blend_type;
   m_bRgbByteOrder = bRgbByteOrder;
-  m_bClip = bClip;
   if (m_DestFormat == FXDIB_Format::kInvalid ||
       m_DestFormat == FXDIB_Format::k1bppMask ||
       m_DestFormat == FXDIB_Format::k1bppRgb) {
@@ -2317,7 +2315,7 @@
       const int dest_Bpp = GetCompsFromFormat(m_DestFormat);
       if (m_bRgbByteOrder) {
         if (m_BlendType == BlendMode::kNormal) {
-          if (m_bClip) {
+          if (!clip_scan.empty()) {
             CompositeRow_Rgb2Rgb_NoBlend_Clip_RgbByteOrder(
                 dest_scan, src_scan, width, dest_Bpp, src_Bpp, clip_scan);
             return;
@@ -2326,7 +2324,7 @@
               dest_scan, src_scan, width, dest_Bpp, src_Bpp);
           return;
         }
-        if (m_bClip) {
+        if (!clip_scan.empty()) {
           CompositeRow_Rgb2Rgb_Blend_Clip_RgbByteOrder(
               dest_scan, src_scan, width, m_BlendType, dest_Bpp, src_Bpp,
               clip_scan);
@@ -2338,7 +2336,7 @@
       }
 
       if (m_BlendType == BlendMode::kNormal) {
-        if (m_bClip) {
+        if (!clip_scan.empty()) {
           CompositeRow_Rgb2Rgb_NoBlend_Clip(dest_scan, src_scan, width,
                                             dest_Bpp, src_Bpp, clip_scan);
           return;
@@ -2347,7 +2345,7 @@
                                             dest_Bpp, src_Bpp);
         return;
       }
-      if (m_bClip) {
+      if (!clip_scan.empty()) {
         CompositeRow_Rgb2Rgb_Blend_Clip(dest_scan, src_scan, width, m_BlendType,
                                         dest_Bpp, src_Bpp, clip_scan);
         return;
@@ -2359,7 +2357,7 @@
     case FXDIB_Format::kArgb: {
       if (m_bRgbByteOrder) {
         if (m_BlendType == BlendMode::kNormal) {
-          if (m_bClip) {
+          if (!clip_scan.empty()) {
             CompositeRow_Rgb2Argb_NoBlend_Clip_RgbByteOrder(
                 dest_scan, src_scan, width, src_Bpp, clip_scan);
             return;
@@ -2368,7 +2366,7 @@
                                                             width, src_Bpp);
           return;
         }
-        if (m_bClip) {
+        if (!clip_scan.empty()) {
           CompositeRow_Rgb2Argb_Blend_Clip_RgbByteOrder(
               dest_scan, src_scan, width, m_BlendType, src_Bpp, clip_scan);
           return;
@@ -2379,7 +2377,7 @@
       }
 
       if (m_BlendType == BlendMode::kNormal) {
-        if (m_bClip) {
+        if (!clip_scan.empty()) {
           CompositeRow_Rgb2Argb_NoBlend_Clip(dest_scan, src_scan, width,
                                              src_Bpp, clip_scan);
           return;
@@ -2388,7 +2386,7 @@
                                              src_Bpp);
         return;
       }
-      if (m_bClip) {
+      if (!clip_scan.empty()) {
         CompositeRow_Rgb2Argb_Blend_Clip(dest_scan, src_scan, width,
                                          m_BlendType, src_Bpp, clip_scan);
         return;
diff --git a/core/fxge/dib/cfx_scanlinecompositor.h b/core/fxge/dib/cfx_scanlinecompositor.h
index e5f9aa6..ed1c958 100644
--- a/core/fxge/dib/cfx_scanlinecompositor.h
+++ b/core/fxge/dib/cfx_scanlinecompositor.h
@@ -26,7 +26,6 @@
             pdfium::span<const uint32_t> src_palette,
             uint32_t mask_color,
             BlendMode blend_type,
-            bool bClip,
             bool bRgbByteOrder);
 
   void CompositeRgbBitmapLine(pdfium::span<uint8_t> dest_scan,
@@ -113,7 +112,6 @@
   int m_MaskBlue;
   BlendMode m_BlendType = BlendMode::kNormal;
   bool m_bRgbByteOrder = false;
-  bool m_bClip = false;
 };
 
 #endif  // CORE_FXGE_DIB_CFX_SCANLINECOMPOSITOR_H_