diff --git a/core/fxge/agg/fx_agg_driver.cpp b/core/fxge/agg/fx_agg_driver.cpp
index 1d2b025..16ba887 100644
--- a/core/fxge/agg/fx_agg_driver.cpp
+++ b/core/fxge/agg/fx_agg_driver.cpp
@@ -46,26 +46,6 @@
                     pdfium::clamp(pos.y, -kMaxPos, kMaxPos));
 }
 
-void RgbByteOrderSetPixel(const RetainPtr<CFX_DIBitmap>& pBitmap,
-                          int x,
-                          int y,
-                          uint32_t argb) {
-  if (x < 0 || x >= pBitmap->GetWidth() || y < 0 || y >= pBitmap->GetHeight())
-    return;
-
-  uint8_t* pos = pBitmap->GetBuffer() + y * pBitmap->GetPitch() +
-                 x * pBitmap->GetBPP() / 8;
-  if (pBitmap->GetFormat() == FXDIB_Argb) {
-    FXARGB_SETRGBORDERDIB(pos, argb);
-    return;
-  }
-
-  int alpha = FXARGB_A(argb);
-  pos[0] = (FXARGB_R(argb) * alpha + pos[0] * (255 - alpha)) / 255;
-  pos[1] = (FXARGB_G(argb) * alpha + pos[1] * (255 - alpha)) / 255;
-  pos[2] = (FXARGB_B(argb) * alpha + pos[2] * (255 - alpha)) / 255;
-}
-
 void RgbByteOrderCompositeRect(const RetainPtr<CFX_DIBitmap>& pBitmap,
                                int left,
                                int top,
@@ -232,20 +212,6 @@
   }
 }
 
-bool DibSetPixel(const RetainPtr<CFX_DIBitmap>& pDevice,
-                 int x,
-                 int y,
-                 uint32_t color) {
-  int alpha = FXARGB_A(color);
-  if (pDevice->IsCmykImage())
-    return false;
-
-  pDevice->SetPixel(x, y, color);
-  if (pDevice->m_pAlphaMask)
-    pDevice->m_pAlphaMask->SetPixel(x, y, alpha << 24);
-  return true;
-}
-
 void RasterizeStroke(agg::rasterizer_scanline_aa* rasterizer,
                      agg::path_storage* path_data,
                      const CFX_Matrix* pObject2Device,
@@ -1381,38 +1347,6 @@
                           m_bGroupKnockout);
 }
 
-bool CFX_AggDeviceDriver::SetPixel(int x, int y, uint32_t color) {
-  if (!m_pBitmap->GetBuffer())
-    return true;
-
-  if (!m_pClipRgn) {
-    if (!m_bRgbByteOrder)
-      return DibSetPixel(m_pBitmap, x, y, color);
-    RgbByteOrderSetPixel(m_pBitmap, x, y, color);
-    return true;
-  }
-  if (!m_pClipRgn->GetBox().Contains(x, y))
-    return true;
-
-  if (m_pClipRgn->GetType() == CFX_ClipRgn::RectI) {
-    if (!m_bRgbByteOrder)
-      return DibSetPixel(m_pBitmap, x, y, color);
-    RgbByteOrderSetPixel(m_pBitmap, x, y, color);
-    return true;
-  }
-  if (m_pClipRgn->GetType() != CFX_ClipRgn::MaskF)
-    return true;
-
-  int new_alpha =
-      FXARGB_A(color) * m_pClipRgn->GetMask()->GetScanline(y)[x] / 255;
-  color = (color & 0xffffff) | (new_alpha << 24);
-  if (m_bRgbByteOrder) {
-    RgbByteOrderSetPixel(m_pBitmap, x, y, color);
-    return true;
-  }
-  return DibSetPixel(m_pBitmap, x, y, color);
-}
-
 bool CFX_AggDeviceDriver::FillRectWithBlend(const FX_RECT& rect,
                                             uint32_t fill_color,
                                             BlendMode blend_type) {
diff --git a/core/fxge/agg/fx_agg_driver.h b/core/fxge/agg/fx_agg_driver.h
index 85a5754..35acf0c 100644
--- a/core/fxge/agg/fx_agg_driver.h
+++ b/core/fxge/agg/fx_agg_driver.h
@@ -61,7 +61,6 @@
                 uint32_t stroke_color,
                 const CFX_FillRenderOptions& fill_options,
                 BlendMode blend_type) override;
-  bool SetPixel(int x, int y, uint32_t color) override;
   bool FillRectWithBlend(const FX_RECT& rect,
                          uint32_t fill_color,
                          BlendMode blend_type) override;
diff --git a/core/fxge/renderdevicedriver_iface.cpp b/core/fxge/renderdevicedriver_iface.cpp
index 569afcf..f3a0685 100644
--- a/core/fxge/renderdevicedriver_iface.cpp
+++ b/core/fxge/renderdevicedriver_iface.cpp
@@ -27,10 +27,6 @@
 
 void RenderDeviceDriverIface::SetBaseClip(const FX_RECT& rect) {}
 
-bool RenderDeviceDriverIface::SetPixel(int x, int y, uint32_t color) {
-  return false;
-}
-
 bool RenderDeviceDriverIface::FillRectWithBlend(const FX_RECT& rect,
                                                 uint32_t fill_color,
                                                 BlendMode blend_type) {
@@ -74,8 +70,6 @@
   return 0;
 }
 
-void RenderDeviceDriverIface::ClearDriver() {}
-
 bool RenderDeviceDriverIface::DrawShading(const CPDF_ShadingPattern* pPattern,
                                           const CFX_Matrix* pMatrix,
                                           const FX_RECT& clip_rect,
diff --git a/core/fxge/renderdevicedriver_iface.h b/core/fxge/renderdevicedriver_iface.h
index f3b4d2a..5245c43 100644
--- a/core/fxge/renderdevicedriver_iface.h
+++ b/core/fxge/renderdevicedriver_iface.h
@@ -59,7 +59,6 @@
                         uint32_t stroke_color,
                         const CFX_FillRenderOptions& fill_options,
                         BlendMode blend_type) = 0;
-  virtual bool SetPixel(int x, int y, uint32_t color);
   virtual bool FillRectWithBlend(const FX_RECT& rect,
                                  uint32_t fill_color,
                                  BlendMode blend_type);
@@ -105,7 +104,6 @@
                               uint32_t color,
                               const CFX_TextRenderOptions& options);
   virtual int GetDriverType() const;
-  virtual void ClearDriver();
   virtual bool DrawShading(const CPDF_ShadingPattern* pPattern,
                            const CFX_Matrix* pMatrix,
                            const FX_RECT& clip_rect,