epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 1 | |
reed@google.com | 69d0555 | 2011-05-24 12:14:28 +0000 | [diff] [blame] | 2 | /* |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 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. |
reed@google.com | 69d0555 | 2011-05-24 12:14:28 +0000 | [diff] [blame] | 7 | */ |
| 8 | |
reed@google.com | 4b163ed | 2012-08-07 21:35:13 +0000 | [diff] [blame] | 9 | #include "SkMathPriv.h" |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 10 | |
reed@android.com | a44b4cc | 2009-07-16 02:03:58 +0000 | [diff] [blame] | 11 | #define SCALE_FILTER_NAME MAKENAME(_filter_DX_shaderproc) |
| 12 | |
digit@google.com | 3ada0ef | 2012-08-13 14:06:34 +0000 | [diff] [blame] | 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, |
bsalomon@google.com | 100abf4 | 2012-09-05 17:40:04 +0000 | [diff] [blame] | 16 | DSTTYPE* SK_RESTRICT colors, int count); |
| 17 | |
| 18 | void SCALE_FILTER_NAME(const SkBitmapProcState& s, int x, int y, |
digit@google.com | 3ada0ef | 2012-08-13 14:06:34 +0000 | [diff] [blame] | 19 | DSTTYPE* SK_RESTRICT colors, int count) { |
reed@android.com | a44b4cc | 2009-07-16 02:03:58 +0000 | [diff] [blame] | 20 | SkASSERT((s.fInvType & ~(SkMatrix::kTranslate_Mask | |
| 21 | SkMatrix::kScale_Mask)) == 0); |
| 22 | SkASSERT(s.fInvKy == 0); |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 23 | SkASSERT(count > 0 && colors != nullptr); |
reed | 93a1215 | 2015-03-16 10:08:34 -0700 | [diff] [blame] | 24 | SkASSERT(s.fFilterLevel != kNone_SkFilterQuality); |
reed@android.com | a44b4cc | 2009-07-16 02:03:58 +0000 | [diff] [blame] | 25 | SkDEBUGCODE(CHECKSTATE(s);) |
reed@android.com | 48534f9 | 2009-07-16 20:53:26 +0000 | [diff] [blame] | 26 | |
reed | ad7ae6c | 2015-06-04 14:12:25 -0700 | [diff] [blame] | 27 | const unsigned maxX = s.fPixmap.width() - 1; |
reed@android.com | a44b4cc | 2009-07-16 02:03:58 +0000 | [diff] [blame] | 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; |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 37 | s.fInvProc(s.fInvMatrix, SkIntToScalar(x) + SK_ScalarHalf, |
reed@android.com | a44b4cc | 2009-07-16 02:03:58 +0000 | [diff] [blame] | 38 | SkIntToScalar(y) + SK_ScalarHalf, &pt); |
| 39 | SkFixed fy = SkScalarToFixed(pt.fY) - (s.fFilterOneY >> 1); |
reed | ad7ae6c | 2015-06-04 14:12:25 -0700 | [diff] [blame] | 40 | const unsigned maxY = s.fPixmap.height() - 1; |
reed@android.com | a44b4cc | 2009-07-16 02:03:58 +0000 | [diff] [blame] | 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 | |
reed | ad7ae6c | 2015-06-04 14:12:25 -0700 | [diff] [blame] | 46 | const char* SK_RESTRICT srcAddr = (const char*)s.fPixmap.addr(); |
| 47 | size_t rb = s.fPixmap.rowBytes(); |
reed@android.com | a44b4cc | 2009-07-16 02:03:58 +0000 | [diff] [blame] | 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 | } |
reed@android.com | 48534f9 | 2009-07-16 20:53:26 +0000 | [diff] [blame] | 53 | |
reed@android.com | b577b41 | 2009-10-27 17:49:32 +0000 | [diff] [blame] | 54 | #ifdef PREAMBLE |
| 55 | PREAMBLE(s); |
| 56 | #endif |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 57 | |
reed@android.com | a44b4cc | 2009-07-16 02:03:58 +0000 | [diff] [blame] | 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 | |
reed@android.com | 152f748 | 2009-08-07 19:14:34 +0000 | [diff] [blame] | 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; |
reed@android.com | 48534f9 | 2009-07-16 20:53:26 +0000 | [diff] [blame] | 70 | |
reed@android.com | a44b4cc | 2009-07-16 02:03:58 +0000 | [diff] [blame] | 71 | fx += dx; |
| 72 | } while (--count != 0); |
reed@android.com | b577b41 | 2009-10-27 17:49:32 +0000 | [diff] [blame] | 73 | |
| 74 | #ifdef POSTAMBLE |
| 75 | POSTAMBLE(s); |
| 76 | #endif |
reed@android.com | a44b4cc | 2009-07-16 02:03:58 +0000 | [diff] [blame] | 77 | } |
| 78 | |
| 79 | /////////////////////////////////////////////////////////////////////////////// |
| 80 | |
reed@android.com | a44b4cc | 2009-07-16 02:03:58 +0000 | [diff] [blame] | 81 | #undef TILEX_PROCF |
| 82 | #undef TILEY_PROCF |
| 83 | #undef TILEX_LOW_BITS |
| 84 | #undef TILEY_LOW_BITS |
reed@android.com | 01f82da | 2009-07-22 17:11:41 +0000 | [diff] [blame] | 85 | #undef MAKENAME |
| 86 | #undef SRCTYPE |
reed@android.com | aa9152a | 2009-07-17 21:24:56 +0000 | [diff] [blame] | 87 | #undef DSTTYPE |
reed@android.com | 01f82da | 2009-07-22 17:11:41 +0000 | [diff] [blame] | 88 | #undef CHECKSTATE |
| 89 | #undef SRC_TO_FILTER |
| 90 | #undef FILTER_TO_DST |
reed@android.com | b577b41 | 2009-10-27 17:49:32 +0000 | [diff] [blame] | 91 | #undef PREAMBLE |
| 92 | #undef POSTAMBLE |
reed@android.com | a44b4cc | 2009-07-16 02:03:58 +0000 | [diff] [blame] | 93 | |
| 94 | #undef SCALE_FILTER_NAME |