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1 | 1 |
2 /* | 2 /* |
3 * Copyright 2006 The Android Open Source Project | 3 * Copyright 2006 The Android Open Source Project |
4 * | 4 * |
5 * Use of this source code is governed by a BSD-style license that can be | 5 * Use of this source code is governed by a BSD-style license that can be |
6 * found in the LICENSE file. | 6 * found in the LICENSE file. |
7 */ | 7 */ |
8 | 8 |
9 | 9 |
10 #include "SkScanPriv.h" | 10 #include "SkScanPriv.h" |
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46 public: | 46 public: |
47 BaseSuperBlitter(SkBlitter* realBlitter, const SkIRect& ir, | 47 BaseSuperBlitter(SkBlitter* realBlitter, const SkIRect& ir, |
48 const SkRegion& clip, bool isInverse); | 48 const SkRegion& clip, bool isInverse); |
49 | 49 |
50 /// Must be explicitly defined on subclasses. | 50 /// Must be explicitly defined on subclasses. |
51 virtual void blitAntiH(int x, int y, const SkAlpha antialias[], | 51 virtual void blitAntiH(int x, int y, const SkAlpha antialias[], |
52 const int16_t runs[]) SK_OVERRIDE { | 52 const int16_t runs[]) SK_OVERRIDE { |
53 SkDEBUGFAIL("How did I get here?"); | 53 SkDEBUGFAIL("How did I get here?"); |
54 } | 54 } |
55 /// May not be called on BaseSuperBlitter because it blits out of order. | 55 /// May not be called on BaseSuperBlitter because it blits out of order. |
56 virtual void blitV(int x, int y, int height, SkAlpha alpha) SK_OVERRIDE { | 56 void blitV(int x, int y, int height, SkAlpha alpha) SK_OVERRIDE { |
57 SkDEBUGFAIL("How did I get here?"); | 57 SkDEBUGFAIL("How did I get here?"); |
58 } | 58 } |
59 | 59 |
60 protected: | 60 protected: |
61 SkBlitter* fRealBlitter; | 61 SkBlitter* fRealBlitter; |
62 /// Current y coordinate, in destination coordinates. | 62 /// Current y coordinate, in destination coordinates. |
63 int fCurrIY; | 63 int fCurrIY; |
64 /// Widest row of region to be blitted, in destination coordinates. | 64 /// Widest row of region to be blitted, in destination coordinates. |
65 int fWidth; | 65 int fWidth; |
66 /// Leftmost x coordinate in any row, in destination coordinates. | 66 /// Leftmost x coordinate in any row, in destination coordinates. |
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113 virtual ~SuperBlitter() { | 113 virtual ~SuperBlitter() { |
114 this->flush(); | 114 this->flush(); |
115 } | 115 } |
116 | 116 |
117 /// Once fRuns contains a complete supersampled row, flush() blits | 117 /// Once fRuns contains a complete supersampled row, flush() blits |
118 /// it out through the wrapped blitter. | 118 /// it out through the wrapped blitter. |
119 void flush(); | 119 void flush(); |
120 | 120 |
121 /// Blits a row of pixels, with location and width specified | 121 /// Blits a row of pixels, with location and width specified |
122 /// in supersampled coordinates. | 122 /// in supersampled coordinates. |
123 virtual void blitH(int x, int y, int width) SK_OVERRIDE; | 123 void blitH(int x, int y, int width) SK_OVERRIDE; |
124 /// Blits a rectangle of pixels, with location and size specified | 124 /// Blits a rectangle of pixels, with location and size specified |
125 /// in supersampled coordinates. | 125 /// in supersampled coordinates. |
126 virtual void blitRect(int x, int y, int width, int height) SK_OVERRIDE; | 126 void blitRect(int x, int y, int width, int height) SK_OVERRIDE; |
127 | 127 |
128 private: | 128 private: |
129 // The next three variables are used to track a circular buffer that | 129 // The next three variables are used to track a circular buffer that |
130 // contains the values used in SkAlphaRuns. These variables should only | 130 // contains the values used in SkAlphaRuns. These variables should only |
131 // ever be updated in advanceRuns(), and fRuns should always point to | 131 // ever be updated in advanceRuns(), and fRuns should always point to |
132 // a valid SkAlphaRuns... | 132 // a valid SkAlphaRuns... |
133 int fRunsToBuffer; | 133 int fRunsToBuffer; |
134 void* fRunsBuffer; | 134 void* fRunsBuffer; |
135 int fCurrentRun; | 135 int fCurrentRun; |
136 SkAlphaRuns fRuns; | 136 SkAlphaRuns fRuns; |
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401 /////////////////////////////////////////////////////////////////////////////// | 401 /////////////////////////////////////////////////////////////////////////////// |
402 | 402 |
403 /// Masked supersampling antialiased blitter. | 403 /// Masked supersampling antialiased blitter. |
404 class MaskSuperBlitter : public BaseSuperBlitter { | 404 class MaskSuperBlitter : public BaseSuperBlitter { |
405 public: | 405 public: |
406 MaskSuperBlitter(SkBlitter* realBlitter, const SkIRect& ir, const SkRegion&,
bool isInverse); | 406 MaskSuperBlitter(SkBlitter* realBlitter, const SkIRect& ir, const SkRegion&,
bool isInverse); |
407 virtual ~MaskSuperBlitter() { | 407 virtual ~MaskSuperBlitter() { |
408 fRealBlitter->blitMask(fMask, fClipRect); | 408 fRealBlitter->blitMask(fMask, fClipRect); |
409 } | 409 } |
410 | 410 |
411 virtual void blitH(int x, int y, int width) SK_OVERRIDE; | 411 void blitH(int x, int y, int width) SK_OVERRIDE; |
412 | 412 |
413 static bool CanHandleRect(const SkIRect& bounds) { | 413 static bool CanHandleRect(const SkIRect& bounds) { |
414 #ifdef FORCE_RLE | 414 #ifdef FORCE_RLE |
415 return false; | 415 return false; |
416 #endif | 416 #endif |
417 int width = bounds.width(); | 417 int width = bounds.width(); |
418 int64_t rb = SkAlign4(width); | 418 int64_t rb = SkAlign4(width); |
419 // use 64bits to detect overflow | 419 // use 64bits to detect overflow |
420 int64_t storage = rb * bounds.height(); | 420 int64_t storage = rb * bounds.height(); |
421 | 421 |
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766 AntiFillPath(path, clip.bwRgn(), blitter); | 766 AntiFillPath(path, clip.bwRgn(), blitter); |
767 } else { | 767 } else { |
768 SkRegion tmp; | 768 SkRegion tmp; |
769 SkAAClipBlitter aaBlitter; | 769 SkAAClipBlitter aaBlitter; |
770 | 770 |
771 tmp.setRect(clip.getBounds()); | 771 tmp.setRect(clip.getBounds()); |
772 aaBlitter.init(blitter, &clip.aaRgn()); | 772 aaBlitter.init(blitter, &clip.aaRgn()); |
773 SkScan::AntiFillPath(path, tmp, &aaBlitter, true); | 773 SkScan::AntiFillPath(path, tmp, &aaBlitter, true); |
774 } | 774 } |
775 } | 775 } |
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