2 files changed, 8 insertions, 15 deletions
diff --git a/core/fxge/include/fx_dib.h b/core/fxge/include/fx_dib.h
index 6504e5fd8f..12ed03c1d3 100644
--- a/core/fxge/include/fx_dib.h
+++ b/core/fxge/include/fx_dib.h
@@ -256,6 +256,7 @@ class CFX_DIBSource {
   int FindPalette(uint32_t color) const;
   void GetPalette(uint32_t* pal, int alpha) const;
 };
+
 class CFX_DIBitmap : public CFX_DIBSource {
  public:
   CFX_DIBitmap();
@@ -357,17 +358,13 @@ class CFX_DIBitmap : public CFX_DIBSource {
 
   FX_BOOL ConvertColorScale(uint32_t forecolor, uint32_t backcolor);
 
-  FX_BOOL DitherFS(const uint32_t* pPalette,
-                   int pal_size,
-                   const FX_RECT* pRect = NULL);
-
  protected:
-  uint8_t* m_pBuffer;
+  FX_BOOL GetGrayData(void* pIccTransform = NULL);
 
+  uint8_t* m_pBuffer;
   FX_BOOL m_bExtBuf;
-
-  FX_BOOL GetGrayData(void* pIccTransform = NULL);
 };
+
 class CFX_DIBExtractor {
  public:
   CFX_DIBExtractor(const CFX_DIBSource* pSrc);
diff --git a/core/fxge/include/fx_ge.h b/core/fxge/include/fx_ge.h
index c025c1251e..6a3113d070 100644
--- a/core/fxge/include/fx_ge.h
+++ b/core/fxge/include/fx_ge.h
@@ -161,7 +161,6 @@ class CFX_GraphStateData {
 #define FXDC_HORZ_SIZE 5
 #define FXDC_VERT_SIZE 6
 #define FXDC_RENDER_CAPS 7
-#define FXDC_DITHER_BITS 8
 #define FXDC_DISPLAY 1
 #define FXDC_PRINTER 2
 #define FXRC_GET_BITS 0x01
@@ -402,16 +401,13 @@ class CFX_FxgeDevice : public CFX_RenderDevice {
   ~CFX_FxgeDevice() override;
 
   bool Attach(CFX_DIBitmap* pBitmap,
-              int dither_bits = 0,
-              bool bRgbByteOrder = false,
-              CFX_DIBitmap* pOriDevice = NULL,
-              bool bGroupKnockout = false);
-
+              bool bRgbByteOrder,
+              CFX_DIBitmap* pOriDevice,
+              bool bGroupKnockout);
   bool Create(int width,
               int height,
               FXDIB_Format format,
-              int dither_bits = 0,
-              CFX_DIBitmap* pOriDevice = NULL);
+              CFX_DIBitmap* pOriDevice);
 
 #ifdef _SKIA_SUPPORT_
   bool AttachRecorder(SkPictureRecorder* recorder);