| /* |
| * 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 |
| |
| #include "SkBitmapProcShader.h" |
| #include "SkBlitter.h" |
| #include "SkBlitRow.h" |
| #include "SkPaint.h" |
| #include "SkShaderBase.h" |
| #include "SkXfermodePriv.h" |
| |
| class SkRasterBlitter : public SkBlitter { |
| public: |
| SkRasterBlitter(const SkPixmap& device) : fDevice(device) {} |
| |
| protected: |
| const SkPixmap fDevice; |
| |
| private: |
| typedef SkBlitter INHERITED; |
| }; |
| |
| class SkShaderBlitter : public SkRasterBlitter { |
| public: |
| /** |
| * The storage for shaderContext is owned by the caller, but the object itself is not. |
| * The blitter only ensures that the storage always holds a live object, but it may |
| * exchange that object. |
| */ |
| SkShaderBlitter(const SkPixmap& device, const SkPaint& paint, |
| SkShaderBase::Context* shaderContext); |
| virtual ~SkShaderBlitter(); |
| |
| protected: |
| uint32_t fShaderFlags; |
| const SkShader* fShader; |
| SkShaderBase::Context* fShaderContext; |
| bool fConstInY; |
| |
| private: |
| // illegal |
| SkShaderBlitter& operator=(const SkShaderBlitter&); |
| |
| typedef SkRasterBlitter INHERITED; |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| class SkA8_Coverage_Blitter : public SkRasterBlitter { |
| public: |
| SkA8_Coverage_Blitter(const SkPixmap& device, const SkPaint& paint); |
| void blitH(int x, int y, int width) override; |
| void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]) override; |
| void blitV(int x, int y, int height, SkAlpha alpha) override; |
| void blitRect(int x, int y, int width, int height) override; |
| void blitMask(const SkMask&, const SkIRect&) override; |
| const SkPixmap* justAnOpaqueColor(uint32_t*) override; |
| }; |
| |
| //////////////////////////////////////////////////////////////// |
| |
| class SkARGB32_Blitter : public SkRasterBlitter { |
| public: |
| SkARGB32_Blitter(const SkPixmap& device, const SkPaint& paint); |
| void blitH(int x, int y, int width) override; |
| void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]) override; |
| void blitV(int x, int y, int height, SkAlpha alpha) override; |
| void blitRect(int x, int y, int width, int height) override; |
| void blitMask(const SkMask&, const SkIRect&) override; |
| const SkPixmap* justAnOpaqueColor(uint32_t*) override; |
| void blitAntiH2(int x, int y, U8CPU a0, U8CPU a1) override; |
| void blitAntiV2(int x, int y, U8CPU a0, U8CPU a1) override; |
| |
| protected: |
| SkColor fColor; |
| SkPMColor fPMColor; |
| |
| 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 SkPixmap& device, const SkPaint& paint) |
| : INHERITED(device, paint) { SkASSERT(paint.getAlpha() == 0xFF); } |
| void blitMask(const SkMask&, const SkIRect&) override; |
| void blitAntiH2(int x, int y, U8CPU a0, U8CPU a1) override; |
| void blitAntiV2(int x, int y, U8CPU a0, U8CPU a1) override; |
| |
| private: |
| typedef SkARGB32_Blitter INHERITED; |
| }; |
| |
| class SkARGB32_Black_Blitter : public SkARGB32_Opaque_Blitter { |
| public: |
| SkARGB32_Black_Blitter(const SkPixmap& device, const SkPaint& paint) |
| : INHERITED(device, paint) {} |
| void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]) override; |
| void blitAntiH2(int x, int y, U8CPU a0, U8CPU a1) override; |
| void blitAntiV2(int x, int y, U8CPU a0, U8CPU a1) override; |
| |
| private: |
| typedef SkARGB32_Opaque_Blitter INHERITED; |
| }; |
| |
| class SkARGB32_Shader_Blitter : public SkShaderBlitter { |
| public: |
| SkARGB32_Shader_Blitter(const SkPixmap& device, const SkPaint& paint, |
| SkShaderBase::Context* shaderContext); |
| ~SkARGB32_Shader_Blitter() override; |
| void blitH(int x, int y, int width) override; |
| void blitV(int x, int y, int height, SkAlpha alpha) override; |
| void blitRect(int x, int y, int width, int height) override; |
| void blitAntiH(int x, int y, const SkAlpha[], const int16_t[]) override; |
| void blitMask(const SkMask&, const SkIRect&) override; |
| |
| private: |
| SkXfermode* fXfermode; |
| SkPMColor* fBuffer; |
| SkBlitRow::Proc32 fProc32; |
| SkBlitRow::Proc32 fProc32Blend; |
| bool fShadeDirectlyIntoDevice; |
| |
| // illegal |
| SkARGB32_Shader_Blitter& operator=(const SkARGB32_Shader_Blitter&); |
| |
| typedef SkShaderBlitter INHERITED; |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| typedef void (*SkS32D16BlendProc)(uint16_t*, const SkPMColor*, int, uint8_t); |
| |
| class SkRGB565_Shader_Blitter : public SkShaderBlitter { |
| public: |
| SkRGB565_Shader_Blitter(const SkPixmap& device, const SkPaint&, SkShaderBase::Context*); |
| ~SkRGB565_Shader_Blitter() override; |
| void blitH(int x, int y, int width) override; |
| void blitAntiH(int x, int y, const SkAlpha[], const int16_t[]) override; |
| |
| static bool Supports(const SkPixmap& device, const SkPaint&); |
| |
| private: |
| SkPMColor* fBuffer; |
| SkS32D16BlendProc fBlend; |
| SkS32D16BlendProc fBlendCoverage; |
| |
| typedef SkShaderBlitter INHERITED; |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| // Neither of these ever returns nullptr, but this first factory may return a SkNullBlitter. |
| SkBlitter* SkCreateRasterPipelineBlitter(const SkPixmap&, const SkPaint&, const SkMatrix& ctm, |
| SkArenaAlloc*); |
| // Use this if you've pre-baked a shader pipeline, including modulating with paint alpha. |
| // This factory never returns an SkNullBlitter. |
| SkBlitter* SkCreateRasterPipelineBlitter(const SkPixmap&, const SkPaint&, |
| const SkRasterPipeline& shaderPipeline, |
| bool shader_is_opaque, |
| SkArenaAlloc*); |
| |
| #endif |