The Tor Browser / file comparison
comparison: gfx/skia/trunk/src/core/SkBitmapProcState_shaderproc.h
gfx/skia/trunk/src/core/SkBitmapProcState_shaderproc.h
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
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| -1:000000000000 | 0:66bb26fc69f6 |
|---|---|
| 1 | |
| 2 /* | |
| 3 * Copyright 2011 Google Inc. | |
| 4 * | |
| 5 * Use of this source code is governed by a BSD-style license that can be | |
| 6 * found in the LICENSE file. | |
| 7 */ | |
| 8 | |
| 9 #include "SkMathPriv.h" | |
| 10 | |
| 11 #define SCALE_FILTER_NAME MAKENAME(_filter_DX_shaderproc) | |
| 12 | |
| 13 // Can't be static in the general case because some of these implementations | |
| 14 // will be defined and referenced in different object files. | |
| 15 void SCALE_FILTER_NAME(const SkBitmapProcState& s, int x, int y, | |
| 16 DSTTYPE* SK_RESTRICT colors, int count); | |
| 17 | |
| 18 void SCALE_FILTER_NAME(const SkBitmapProcState& s, int x, int y, | |
| 19 DSTTYPE* SK_RESTRICT colors, int count) { | |
| 20 SkASSERT((s.fInvType & ~(SkMatrix::kTranslate_Mask | | |
| 21 SkMatrix::kScale_Mask)) == 0); | |
| 22 SkASSERT(s.fInvKy == 0); | |
| 23 SkASSERT(count > 0 && colors != NULL); | |
| 24 SkASSERT(s.fFilterLevel != SkPaint::kNone_FilterLevel); | |
| 25 SkDEBUGCODE(CHECKSTATE(s);) | |
| 26 | |
| 27 const unsigned maxX = s.fBitmap->width() - 1; | |
| 28 const SkFixed oneX = s.fFilterOneX; | |
| 29 const SkFixed dx = s.fInvSx; | |
| 30 SkFixed fx; | |
| 31 const SRCTYPE* SK_RESTRICT row0; | |
| 32 const SRCTYPE* SK_RESTRICT row1; | |
| 33 unsigned subY; | |
| 34 | |
| 35 { | |
| 36 SkPoint pt; | |
| 37 s.fInvProc(s.fInvMatrix, SkIntToScalar(x) + SK_ScalarHalf, | |
| 38 SkIntToScalar(y) + SK_ScalarHalf, &pt); | |
| 39 SkFixed fy = SkScalarToFixed(pt.fY) - (s.fFilterOneY >> 1); | |
| 40 const unsigned maxY = s.fBitmap->height() - 1; | |
| 41 // compute our two Y values up front | |
| 42 subY = TILEY_LOW_BITS(fy, maxY); | |
| 43 int y0 = TILEY_PROCF(fy, maxY); | |
| 44 int y1 = TILEY_PROCF((fy + s.fFilterOneY), maxY); | |
| 45 | |
| 46 const char* SK_RESTRICT srcAddr = (const char*)s.fBitmap->getPixels(); | |
| 47 size_t rb = s.fBitmap->rowBytes(); | |
| 48 row0 = (const SRCTYPE*)(srcAddr + y0 * rb); | |
| 49 row1 = (const SRCTYPE*)(srcAddr + y1 * rb); | |
| 50 // now initialize fx | |
| 51 fx = SkScalarToFixed(pt.fX) - (oneX >> 1); | |
| 52 } | |
| 53 | |
| 54 #ifdef PREAMBLE | |
| 55 PREAMBLE(s); | |
| 56 #endif | |
| 57 | |
| 58 do { | |
| 59 unsigned subX = TILEX_LOW_BITS(fx, maxX); | |
| 60 unsigned x0 = TILEX_PROCF(fx, maxX); | |
| 61 unsigned x1 = TILEX_PROCF((fx + oneX), maxX); | |
| 62 | |
| 63 FILTER_PROC(subX, subY, | |
| 64 SRC_TO_FILTER(row0[x0]), | |
| 65 SRC_TO_FILTER(row0[x1]), | |
| 66 SRC_TO_FILTER(row1[x0]), | |
| 67 SRC_TO_FILTER(row1[x1]), | |
| 68 colors); | |
| 69 colors += 1; | |
| 70 | |
| 71 fx += dx; | |
| 72 } while (--count != 0); | |
| 73 | |
| 74 #ifdef POSTAMBLE | |
| 75 POSTAMBLE(s); | |
| 76 #endif | |
| 77 } | |
| 78 | |
| 79 /////////////////////////////////////////////////////////////////////////////// | |
| 80 | |
| 81 #undef TILEX_PROCF | |
| 82 #undef TILEY_PROCF | |
| 83 #undef TILEX_LOW_BITS | |
| 84 #undef TILEY_LOW_BITS | |
| 85 #undef MAKENAME | |
| 86 #undef SRCTYPE | |
| 87 #undef DSTTYPE | |
| 88 #undef CHECKSTATE | |
| 89 #undef SRC_TO_FILTER | |
| 90 #undef FILTER_TO_DST | |
| 91 #undef PREAMBLE | |
| 92 #undef POSTAMBLE | |
| 93 | |
| 94 #undef SCALE_FILTER_NAME |
