Speeup hairline curves (quads and cubics)

src/core/SkCoreBlitters.h

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkCoreBlitters_DEFINED
 #define SkCoreBlitters_DEFINED
 
@@ skipping 102 matching lines @@
 
 class SkARGB32_Blitter : public SkRasterBlitter {
 public:
     SkARGB32_Blitter(const SkBitmap& device, const SkPaint& paint);
     virtual void blitH(int x, int y, int width);
     virtual void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]);
     virtual void blitV(int x, int y, int height, SkAlpha alpha);
     virtual void blitRect(int x, int y, int width, int height);
     virtual void blitMask(const SkMask&, const SkIRect&);
     virtual const SkBitmap* justAnOpaqueColor(uint32_t*);
+#ifndef SK_SUPPORT_LEGACY_BLITANTIH2V2
+    void blitAntiH2(int x, int y, U8CPU a0, U8CPU a1) override;
+    void blitAntiV2(int x, int y, U8CPU a0, U8CPU a1) override;
+#endif
 
 protected:
     SkColor                fColor;
     SkPMColor              fPMColor;
     SkBlitRow::ColorProc   fColor32Proc;
 
 private:
     unsigned fSrcA, fSrcR, fSrcG, fSrcB;
 
     // illegal
     SkARGB32_Blitter& operator=(const SkARGB32_Blitter&);
 
     typedef SkRasterBlitter INHERITED;
 };
 
 class SkARGB32_Opaque_Blitter : public SkARGB32_Blitter {
 public:
     SkARGB32_Opaque_Blitter(const SkBitmap& device, const SkPaint& paint)
         : INHERITED(device, paint) { SkASSERT(paint.getAlpha() == 0xFF); }
     virtual void blitMask(const SkMask&, const SkIRect&);
+#ifndef SK_SUPPORT_LEGACY_BLITANTIH2V2
+    void blitAntiH2(int x, int y, U8CPU a0, U8CPU a1) override;
+    void blitAntiV2(int x, int y, U8CPU a0, U8CPU a1) override;
+#endif
 
 private:
     typedef SkARGB32_Blitter INHERITED;
 };
 
 class SkARGB32_Black_Blitter : public SkARGB32_Opaque_Blitter {
 public:
     SkARGB32_Black_Blitter(const SkBitmap& device, const SkPaint& paint)
         : INHERITED(device, paint) {}
     virtual void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]);
+#ifndef SK_SUPPORT_LEGACY_BLITANTIH2V2
+    void blitAntiH2(int x, int y, U8CPU a0, U8CPU a1) override;
+    void blitAntiV2(int x, int y, U8CPU a0, U8CPU a1) override;
+#endif
 
 private:
     typedef SkARGB32_Opaque_Blitter INHERITED;
 };
 
 class SkARGB32_Shader_Blitter : public SkShaderBlitter {
 public:
     SkARGB32_Shader_Blitter(const SkBitmap& device, const SkPaint& paint,
                             SkShader::Context* shaderContext);
     virtual ~SkARGB32_Shader_Blitter();
@@ skipping 30 matching lines @@
 
     These pre-conditions must be handled by the caller, in our case
     SkBlitter::Choose(...)
  */
 
 SkBlitter* SkBlitter_ChooseD565(const SkBitmap& device, const SkPaint& paint,
                                 SkShader::Context* shaderContext,
                                 SkTBlitterAllocator* allocator);
 
 #endif