epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2011 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
reed | 0461713 | 2014-08-21 09:46:49 -0700 | [diff] [blame^] | 7 | |
| 8 | #include "SkBitmapCache.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 9 | #include "SkBitmapProcState.h" |
| 10 | #include "SkColorPriv.h" |
| 11 | #include "SkFilterProc.h" |
| 12 | #include "SkPaint.h" |
| 13 | #include "SkShader.h" // for tilemodes |
digit@google.com | 3ada0ef | 2012-08-13 14:06:34 +0000 | [diff] [blame] | 14 | #include "SkUtilsArm.h" |
humper@google.com | 138ebc3 | 2013-07-19 20:20:04 +0000 | [diff] [blame] | 15 | #include "SkBitmapScaler.h" |
reed@google.com | d94697c | 2013-07-24 14:31:33 +0000 | [diff] [blame] | 16 | #include "SkMipMap.h" |
reed@google.com | cee9dcb | 2013-09-13 16:04:49 +0000 | [diff] [blame] | 17 | #include "SkPixelRef.h" |
commit-bot@chromium.org | f449156 | 2014-05-28 17:30:02 +0000 | [diff] [blame] | 18 | #include "SkImageEncoder.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 19 | |
digit@google.com | 3ada0ef | 2012-08-13 14:06:34 +0000 | [diff] [blame] | 20 | #if !SK_ARM_NEON_IS_NONE |
| 21 | // These are defined in src/opts/SkBitmapProcState_arm_neon.cpp |
| 22 | extern const SkBitmapProcState::SampleProc16 gSkBitmapProcStateSample16_neon[]; |
| 23 | extern const SkBitmapProcState::SampleProc32 gSkBitmapProcStateSample32_neon[]; |
| 24 | extern void S16_D16_filter_DX_neon(const SkBitmapProcState&, const uint32_t*, int, uint16_t*); |
| 25 | extern void Clamp_S16_D16_filter_DX_shaderproc_neon(const SkBitmapProcState&, int, int, uint16_t*, int); |
| 26 | extern void Repeat_S16_D16_filter_DX_shaderproc_neon(const SkBitmapProcState&, int, int, uint16_t*, int); |
| 27 | extern void SI8_opaque_D32_filter_DX_neon(const SkBitmapProcState&, const uint32_t*, int, SkPMColor*); |
| 28 | extern void SI8_opaque_D32_filter_DX_shaderproc_neon(const SkBitmapProcState&, int, int, uint32_t*, int); |
| 29 | extern void Clamp_SI8_opaque_D32_filter_DX_shaderproc_neon(const SkBitmapProcState&, int, int, uint32_t*, int); |
| 30 | #endif |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 31 | |
digit@google.com | 3ada0ef | 2012-08-13 14:06:34 +0000 | [diff] [blame] | 32 | #define NAME_WRAP(x) x |
| 33 | #include "SkBitmapProcState_filter.h" |
| 34 | #include "SkBitmapProcState_procs.h" |
reed@android.com | b577b41 | 2009-10-27 17:49:32 +0000 | [diff] [blame] | 35 | |
reed@android.com | a44b4cc | 2009-07-16 02:03:58 +0000 | [diff] [blame] | 36 | /////////////////////////////////////////////////////////////////////////////// |
| 37 | |
reed@google.com | ee056a8 | 2013-04-18 15:33:27 +0000 | [diff] [blame] | 38 | // true iff the matrix contains, at most, scale and translate elements |
| 39 | static bool matrix_only_scale_translate(const SkMatrix& m) { |
| 40 | return m.getType() <= (SkMatrix::kScale_Mask | SkMatrix::kTranslate_Mask); |
| 41 | } |
| 42 | |
reed@google.com | c0e88e0 | 2012-10-17 21:11:56 +0000 | [diff] [blame] | 43 | /** |
| 44 | * For the purposes of drawing bitmaps, if a matrix is "almost" translate |
| 45 | * go ahead and treat it as if it were, so that subsequent code can go fast. |
| 46 | */ |
| 47 | static bool just_trans_clamp(const SkMatrix& matrix, const SkBitmap& bitmap) { |
reed@google.com | ee056a8 | 2013-04-18 15:33:27 +0000 | [diff] [blame] | 48 | SkASSERT(matrix_only_scale_translate(matrix)); |
reed@google.com | c0e88e0 | 2012-10-17 21:11:56 +0000 | [diff] [blame] | 49 | |
reed@google.com | ee056a8 | 2013-04-18 15:33:27 +0000 | [diff] [blame] | 50 | if (matrix.getType() & SkMatrix::kScale_Mask) { |
| 51 | SkRect src, dst; |
| 52 | bitmap.getBounds(&src); |
reed@google.com | f707adc | 2013-04-18 15:37:14 +0000 | [diff] [blame] | 53 | |
| 54 | // Can't call mapRect(), since that will fix up inverted rectangles, |
| 55 | // e.g. when scale is negative, and we don't want to return true for |
| 56 | // those. |
| 57 | matrix.mapPoints(SkTCast<SkPoint*>(&dst), |
| 58 | SkTCast<const SkPoint*>(&src), |
| 59 | 2); |
reed@google.com | ee056a8 | 2013-04-18 15:33:27 +0000 | [diff] [blame] | 60 | |
| 61 | // Now round all 4 edges to device space, and then compare the device |
| 62 | // width/height to the original. Note: we must map all 4 and subtract |
| 63 | // rather than map the "width" and compare, since we care about the |
| 64 | // phase (in pixel space) that any translate in the matrix might impart. |
| 65 | SkIRect idst; |
| 66 | dst.round(&idst); |
| 67 | return idst.width() == bitmap.width() && idst.height() == bitmap.height(); |
reed@google.com | c0e88e0 | 2012-10-17 21:11:56 +0000 | [diff] [blame] | 68 | } |
| 69 | // if we got here, we're either kTranslate_Mask or identity |
| 70 | return true; |
| 71 | } |
| 72 | |
| 73 | static bool just_trans_general(const SkMatrix& matrix) { |
reed@google.com | ee056a8 | 2013-04-18 15:33:27 +0000 | [diff] [blame] | 74 | SkASSERT(matrix_only_scale_translate(matrix)); |
reed@google.com | c0e88e0 | 2012-10-17 21:11:56 +0000 | [diff] [blame] | 75 | |
reed@google.com | ee056a8 | 2013-04-18 15:33:27 +0000 | [diff] [blame] | 76 | if (matrix.getType() & SkMatrix::kScale_Mask) { |
reed@google.com | c0e88e0 | 2012-10-17 21:11:56 +0000 | [diff] [blame] | 77 | const SkScalar tol = SK_Scalar1 / 32768; |
skia.committer@gmail.com | 989a95e | 2012-10-18 02:01:23 +0000 | [diff] [blame] | 78 | |
reed@google.com | c0e88e0 | 2012-10-17 21:11:56 +0000 | [diff] [blame] | 79 | if (!SkScalarNearlyZero(matrix[SkMatrix::kMScaleX] - SK_Scalar1, tol)) { |
| 80 | return false; |
| 81 | } |
| 82 | if (!SkScalarNearlyZero(matrix[SkMatrix::kMScaleY] - SK_Scalar1, tol)) { |
| 83 | return false; |
| 84 | } |
| 85 | } |
| 86 | // if we got here, treat us as either kTranslate_Mask or identity |
| 87 | return true; |
| 88 | } |
| 89 | |
| 90 | /////////////////////////////////////////////////////////////////////////////// |
| 91 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 92 | static bool valid_for_filtering(unsigned dimension) { |
| 93 | // for filtering, width and height must fit in 14bits, since we use steal |
| 94 | // 2 bits from each to store our 4bit subpixel data |
| 95 | return (dimension & ~0x3FFF) == 0; |
| 96 | } |
| 97 | |
reed@google.com | d94697c | 2013-07-24 14:31:33 +0000 | [diff] [blame] | 98 | static SkScalar effective_matrix_scale_sqrd(const SkMatrix& mat) { |
reed@google.com | 9cfc83c | 2013-07-22 17:18:18 +0000 | [diff] [blame] | 99 | SkPoint v1, v2; |
skia.committer@gmail.com | 5c561cb | 2013-07-25 07:01:00 +0000 | [diff] [blame] | 100 | |
reed@google.com | 9cfc83c | 2013-07-22 17:18:18 +0000 | [diff] [blame] | 101 | v1.fX = mat.getScaleX(); |
| 102 | v1.fY = mat.getSkewY(); |
skia.committer@gmail.com | 5c561cb | 2013-07-25 07:01:00 +0000 | [diff] [blame] | 103 | |
reed@google.com | 9cfc83c | 2013-07-22 17:18:18 +0000 | [diff] [blame] | 104 | v2.fX = mat.getSkewX(); |
| 105 | v2.fY = mat.getScaleY(); |
skia.committer@gmail.com | 5c561cb | 2013-07-25 07:01:00 +0000 | [diff] [blame] | 106 | |
reed@google.com | 9cfc83c | 2013-07-22 17:18:18 +0000 | [diff] [blame] | 107 | return SkMaxScalar(v1.lengthSqd(), v2.lengthSqd()); |
| 108 | } |
| 109 | |
reed@google.com | fa7fd80 | 2013-12-12 21:37:25 +0000 | [diff] [blame] | 110 | class AutoScaledCacheUnlocker { |
| 111 | public: |
| 112 | AutoScaledCacheUnlocker(SkScaledImageCache::ID** idPtr) : fIDPtr(idPtr) {} |
| 113 | ~AutoScaledCacheUnlocker() { |
| 114 | if (fIDPtr && *fIDPtr) { |
| 115 | SkScaledImageCache::Unlock(*fIDPtr); |
| 116 | *fIDPtr = NULL; |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | // forgets the ID, so it won't call Unlock |
| 121 | void release() { |
| 122 | fIDPtr = NULL; |
| 123 | } |
| 124 | |
| 125 | private: |
| 126 | SkScaledImageCache::ID** fIDPtr; |
| 127 | }; |
| 128 | #define AutoScaledCacheUnlocker(...) SK_REQUIRE_LOCAL_VAR(AutoScaledCacheUnlocker) |
| 129 | |
halcanary | 805ef15 | 2014-07-17 06:58:01 -0700 | [diff] [blame] | 130 | // Check to see that the size of the bitmap that would be produced by |
| 131 | // scaling by the given inverted matrix is less than the maximum allowed. |
| 132 | static inline bool cache_size_okay(const SkBitmap& bm, const SkMatrix& invMat) { |
| 133 | size_t maximumAllocation |
| 134 | = SkScaledImageCache::GetSingleAllocationByteLimit(); |
| 135 | if (0 == maximumAllocation) { |
| 136 | return true; |
| 137 | } |
| 138 | // float matrixScaleFactor = 1.0 / (invMat.scaleX * invMat.scaleY); |
| 139 | // return ((origBitmapSize * matrixScaleFactor) < maximumAllocationSize); |
| 140 | // Skip the division step: |
| 141 | return bm.info().getSafeSize(bm.info().minRowBytes()) |
| 142 | < (maximumAllocation * invMat.getScaleX() * invMat.getScaleY()); |
| 143 | } |
| 144 | |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 145 | // TODO -- we may want to pass the clip into this function so we only scale |
| 146 | // the portion of the image that we're going to need. This will complicate |
| 147 | // the interface to the cache, but might be well worth it. |
| 148 | |
reed@google.com | cee9dcb | 2013-09-13 16:04:49 +0000 | [diff] [blame] | 149 | bool SkBitmapProcState::possiblyScaleImage() { |
reed@google.com | fa7fd80 | 2013-12-12 21:37:25 +0000 | [diff] [blame] | 150 | AutoScaledCacheUnlocker unlocker(&fScaledCacheID); |
| 151 | |
reed@google.com | cee9dcb | 2013-09-13 16:04:49 +0000 | [diff] [blame] | 152 | SkASSERT(NULL == fBitmap); |
| 153 | SkASSERT(NULL == fScaledCacheID); |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 154 | |
reed@google.com | 9cfc83c | 2013-07-22 17:18:18 +0000 | [diff] [blame] | 155 | if (fFilterLevel <= SkPaint::kLow_FilterLevel) { |
reed@google.com | cee9dcb | 2013-09-13 16:04:49 +0000 | [diff] [blame] | 156 | return false; |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 157 | } |
skia.committer@gmail.com | 1f3c738 | 2013-07-20 07:00:58 +0000 | [diff] [blame] | 158 | // Check to see if the transformation matrix is simple, and if we're |
| 159 | // doing high quality scaling. If so, do the bitmap scale here and |
humper@google.com | 138ebc3 | 2013-07-19 20:20:04 +0000 | [diff] [blame] | 160 | // remove the scaling component from the matrix. |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 161 | |
reed@google.com | 9cfc83c | 2013-07-22 17:18:18 +0000 | [diff] [blame] | 162 | if (SkPaint::kHigh_FilterLevel == fFilterLevel && |
humper@google.com | 138ebc3 | 2013-07-19 20:20:04 +0000 | [diff] [blame] | 163 | fInvMatrix.getType() <= (SkMatrix::kScale_Mask | SkMatrix::kTranslate_Mask) && |
halcanary | 805ef15 | 2014-07-17 06:58:01 -0700 | [diff] [blame] | 164 | kN32_SkColorType == fOrigBitmap.colorType() && |
| 165 | cache_size_okay(fOrigBitmap, fInvMatrix)) { |
skia.committer@gmail.com | 1f3c738 | 2013-07-20 07:00:58 +0000 | [diff] [blame] | 166 | |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 167 | SkScalar invScaleX = fInvMatrix.getScaleX(); |
| 168 | SkScalar invScaleY = fInvMatrix.getScaleY(); |
skia.committer@gmail.com | 7f1af50 | 2013-07-24 07:01:12 +0000 | [diff] [blame] | 169 | |
humper | 8d9153f | 2014-08-08 12:06:13 -0700 | [diff] [blame] | 170 | if (SkScalarNearlyEqual(invScaleX,1.0f) && |
| 171 | SkScalarNearlyEqual(invScaleY,1.0f)) { |
| 172 | // short-circuit identity scaling; the output is supposed to |
| 173 | // be the same as the input, so we might as well go fast. |
| 174 | |
| 175 | // Note(humper): We could also probably do this if the scales |
| 176 | // are close to -1 as well, since the flip doesn't require |
| 177 | // any fancy re-sampling... |
| 178 | |
| 179 | // Set our filter level to low -- the only post-filtering this |
| 180 | // image might require is some interpolation if the translation |
| 181 | // is fractional. |
| 182 | fFilterLevel = SkPaint::kLow_FilterLevel; |
| 183 | return false; |
| 184 | } |
| 185 | |
reed | 0461713 | 2014-08-21 09:46:49 -0700 | [diff] [blame^] | 186 | fScaledCacheID = SkBitmapCache::FindAndLock(fOrigBitmap, invScaleX, invScaleY, |
| 187 | &fScaledBitmap); |
reed@google.com | fa7fd80 | 2013-12-12 21:37:25 +0000 | [diff] [blame] | 188 | if (fScaledCacheID) { |
| 189 | fScaledBitmap.lockPixels(); |
| 190 | if (!fScaledBitmap.getPixels()) { |
| 191 | fScaledBitmap.unlockPixels(); |
| 192 | // found a purged entry (discardablememory?), release it |
| 193 | SkScaledImageCache::Unlock(fScaledCacheID); |
| 194 | fScaledCacheID = NULL; |
| 195 | // fall through to rebuild |
| 196 | } |
| 197 | } |
| 198 | |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 199 | if (NULL == fScaledCacheID) { |
commit-bot@chromium.org | f449156 | 2014-05-28 17:30:02 +0000 | [diff] [blame] | 200 | float dest_width = fOrigBitmap.width() / invScaleX; |
| 201 | float dest_height = fOrigBitmap.height() / invScaleY; |
| 202 | |
reed@google.com | 602a1d7 | 2013-07-23 19:13:54 +0000 | [diff] [blame] | 203 | // All the criteria are met; let's make a new bitmap. |
humper@google.com | 138ebc3 | 2013-07-19 20:20:04 +0000 | [diff] [blame] | 204 | |
reed@google.com | 1e18225 | 2013-07-24 20:10:42 +0000 | [diff] [blame] | 205 | if (!SkBitmapScaler::Resize(&fScaledBitmap, |
| 206 | fOrigBitmap, |
| 207 | SkBitmapScaler::RESIZE_BEST, |
| 208 | dest_width, |
| 209 | dest_height, |
reed@google.com | e4eb122 | 2013-12-09 22:29:30 +0000 | [diff] [blame] | 210 | SkScaledImageCache::GetAllocator())) { |
reed@google.com | 1e18225 | 2013-07-24 20:10:42 +0000 | [diff] [blame] | 211 | // we failed to create fScaledBitmap, so just return and let |
| 212 | // the scanline proc handle it. |
reed@google.com | 23d0ab7 | 2013-10-15 20:14:00 +0000 | [diff] [blame] | 213 | return false; |
skia.committer@gmail.com | 5c561cb | 2013-07-25 07:01:00 +0000 | [diff] [blame] | 214 | |
reed@google.com | 1e18225 | 2013-07-24 20:10:42 +0000 | [diff] [blame] | 215 | } |
commit-bot@chromium.org | f449156 | 2014-05-28 17:30:02 +0000 | [diff] [blame] | 216 | |
reed@google.com | fa7fd80 | 2013-12-12 21:37:25 +0000 | [diff] [blame] | 217 | SkASSERT(NULL != fScaledBitmap.getPixels()); |
reed | 0461713 | 2014-08-21 09:46:49 -0700 | [diff] [blame^] | 218 | fScaledCacheID = SkBitmapCache::AddAndLock(fOrigBitmap, invScaleX, invScaleY, |
| 219 | fScaledBitmap); |
reed@google.com | fa7fd80 | 2013-12-12 21:37:25 +0000 | [diff] [blame] | 220 | if (!fScaledCacheID) { |
| 221 | fScaledBitmap.reset(); |
| 222 | return false; |
| 223 | } |
| 224 | SkASSERT(NULL != fScaledBitmap.getPixels()); |
reed@google.com | 1ae6c2b | 2013-10-16 17:34:17 +0000 | [diff] [blame] | 225 | } |
| 226 | |
reed@google.com | fa7fd80 | 2013-12-12 21:37:25 +0000 | [diff] [blame] | 227 | SkASSERT(NULL != fScaledBitmap.getPixels()); |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 228 | fBitmap = &fScaledBitmap; |
| 229 | |
| 230 | // set the inv matrix type to translate-only; |
reed@google.com | 40039a3 | 2013-09-05 19:09:57 +0000 | [diff] [blame] | 231 | fInvMatrix.setTranslate(fInvMatrix.getTranslateX() / fInvMatrix.getScaleX(), |
| 232 | fInvMatrix.getTranslateY() / fInvMatrix.getScaleY()); |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 233 | |
humper | 8d9153f | 2014-08-08 12:06:13 -0700 | [diff] [blame] | 234 | // Set our filter level to low -- the only post-filtering this |
| 235 | // image might require is some interpolation if the translation |
| 236 | // is fractional. |
| 237 | fFilterLevel = SkPaint::kLow_FilterLevel; |
reed@google.com | fa7fd80 | 2013-12-12 21:37:25 +0000 | [diff] [blame] | 238 | unlocker.release(); |
reed@google.com | cee9dcb | 2013-09-13 16:04:49 +0000 | [diff] [blame] | 239 | return true; |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 240 | } |
| 241 | |
reed@google.com | 9cfc83c | 2013-07-22 17:18:18 +0000 | [diff] [blame] | 242 | /* |
reed@google.com | 9cfc83c | 2013-07-22 17:18:18 +0000 | [diff] [blame] | 243 | * If High, then our special-case for scale-only did not take, and so we |
| 244 | * have to make a choice: |
| 245 | * 1. fall back on mipmaps + bilerp |
| 246 | * 2. fall back on scanline bicubic filter |
| 247 | * For now, we compute the "scale" value from the matrix, and have a |
| 248 | * threshold to decide when bicubic is better, and when mips are better. |
| 249 | * No doubt a fancier decision tree could be used uere. |
| 250 | * |
| 251 | * If Medium, then we just try to build a mipmap and select a level, |
| 252 | * setting the filter-level to kLow to signal that we just need bilerp |
| 253 | * to process the selected level. |
| 254 | */ |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 255 | |
reed@google.com | 9cfc83c | 2013-07-22 17:18:18 +0000 | [diff] [blame] | 256 | SkScalar scaleSqd = effective_matrix_scale_sqrd(fInvMatrix); |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 257 | |
reed@google.com | 9cfc83c | 2013-07-22 17:18:18 +0000 | [diff] [blame] | 258 | if (SkPaint::kHigh_FilterLevel == fFilterLevel) { |
| 259 | // Set the limit at 0.25 for the CTM... if the CTM is scaling smaller |
| 260 | // than this, then the mipmaps quality may be greater (certainly faster) |
| 261 | // so we only keep High quality if the scale is greater than this. |
| 262 | // |
| 263 | // Since we're dealing with the inverse, we compare against its inverse. |
commit-bot@chromium.org | 4b413c8 | 2013-11-25 19:44:07 +0000 | [diff] [blame] | 264 | const SkScalar bicubicLimit = 4.0f; |
reed@google.com | 9cfc83c | 2013-07-22 17:18:18 +0000 | [diff] [blame] | 265 | const SkScalar bicubicLimitSqd = bicubicLimit * bicubicLimit; |
| 266 | if (scaleSqd < bicubicLimitSqd) { // use bicubic scanline |
reed@google.com | cee9dcb | 2013-09-13 16:04:49 +0000 | [diff] [blame] | 267 | return false; |
reed@google.com | 9cfc83c | 2013-07-22 17:18:18 +0000 | [diff] [blame] | 268 | } |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 269 | |
reed@google.com | 9cfc83c | 2013-07-22 17:18:18 +0000 | [diff] [blame] | 270 | // else set the filter-level to Medium, since we're scaling down and |
| 271 | // want to reqeust mipmaps |
| 272 | fFilterLevel = SkPaint::kMedium_FilterLevel; |
| 273 | } |
skia.committer@gmail.com | 5c561cb | 2013-07-25 07:01:00 +0000 | [diff] [blame] | 274 | |
reed@google.com | 9cfc83c | 2013-07-22 17:18:18 +0000 | [diff] [blame] | 275 | SkASSERT(SkPaint::kMedium_FilterLevel == fFilterLevel); |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 276 | |
reed@google.com | 9cfc83c | 2013-07-22 17:18:18 +0000 | [diff] [blame] | 277 | /** |
| 278 | * Medium quality means use a mipmap for down-scaling, and just bilper |
| 279 | * for upscaling. Since we're examining the inverse matrix, we look for |
| 280 | * a scale > 1 to indicate down scaling by the CTM. |
| 281 | */ |
| 282 | if (scaleSqd > SK_Scalar1) { |
reed@google.com | d94697c | 2013-07-24 14:31:33 +0000 | [diff] [blame] | 283 | const SkMipMap* mip = NULL; |
| 284 | |
| 285 | SkASSERT(NULL == fScaledCacheID); |
reed | 0461713 | 2014-08-21 09:46:49 -0700 | [diff] [blame^] | 286 | fScaledCacheID = SkMipMapCache::FindAndLock(fOrigBitmap, &mip); |
reed@google.com | d94697c | 2013-07-24 14:31:33 +0000 | [diff] [blame] | 287 | if (!fScaledCacheID) { |
| 288 | SkASSERT(NULL == mip); |
| 289 | mip = SkMipMap::Build(fOrigBitmap); |
| 290 | if (mip) { |
reed | 0461713 | 2014-08-21 09:46:49 -0700 | [diff] [blame^] | 291 | fScaledCacheID = SkMipMapCache::AddAndLock(fOrigBitmap, mip); |
commit-bot@chromium.org | 84f7a06 | 2014-04-17 16:46:07 +0000 | [diff] [blame] | 292 | SkASSERT(mip->getRefCnt() > 1); |
reed@google.com | d94697c | 2013-07-24 14:31:33 +0000 | [diff] [blame] | 293 | mip->unref(); // the cache took a ref |
| 294 | SkASSERT(fScaledCacheID); |
| 295 | } |
| 296 | } else { |
| 297 | SkASSERT(mip); |
reed@google.com | 9cfc83c | 2013-07-22 17:18:18 +0000 | [diff] [blame] | 298 | } |
skia.committer@gmail.com | 5c561cb | 2013-07-25 07:01:00 +0000 | [diff] [blame] | 299 | |
reed@google.com | d94697c | 2013-07-24 14:31:33 +0000 | [diff] [blame] | 300 | if (mip) { |
| 301 | SkScalar levelScale = SkScalarInvert(SkScalarSqrt(scaleSqd)); |
| 302 | SkMipMap::Level level; |
| 303 | if (mip->extractLevel(levelScale, &level)) { |
| 304 | SkScalar invScaleFixup = level.fScale; |
| 305 | fInvMatrix.postScale(invScaleFixup, invScaleFixup); |
skia.committer@gmail.com | 5c561cb | 2013-07-25 07:01:00 +0000 | [diff] [blame] | 306 | |
commit-bot@chromium.org | cba7378 | 2014-05-29 15:57:47 +0000 | [diff] [blame] | 307 | SkImageInfo info = fOrigBitmap.info(); |
| 308 | info.fWidth = level.fWidth; |
| 309 | info.fHeight = level.fHeight; |
| 310 | fScaledBitmap.installPixels(info, level.fPixels, level.fRowBytes); |
reed@google.com | 9cfc83c | 2013-07-22 17:18:18 +0000 | [diff] [blame] | 311 | fBitmap = &fScaledBitmap; |
reed@google.com | cee9dcb | 2013-09-13 16:04:49 +0000 | [diff] [blame] | 312 | fFilterLevel = SkPaint::kLow_FilterLevel; |
reed@google.com | fa7fd80 | 2013-12-12 21:37:25 +0000 | [diff] [blame] | 313 | unlocker.release(); |
reed@google.com | cee9dcb | 2013-09-13 16:04:49 +0000 | [diff] [blame] | 314 | return true; |
reed@google.com | 9cfc83c | 2013-07-22 17:18:18 +0000 | [diff] [blame] | 315 | } |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 316 | } |
| 317 | } |
| 318 | |
reed@google.com | cee9dcb | 2013-09-13 16:04:49 +0000 | [diff] [blame] | 319 | return false; |
| 320 | } |
| 321 | |
| 322 | static bool get_locked_pixels(const SkBitmap& src, int pow2, SkBitmap* dst) { |
| 323 | SkPixelRef* pr = src.pixelRef(); |
| 324 | if (pr && pr->decodeInto(pow2, dst)) { |
| 325 | return true; |
| 326 | } |
| 327 | |
reed@google.com | d94697c | 2013-07-24 14:31:33 +0000 | [diff] [blame] | 328 | /* |
reed@google.com | cee9dcb | 2013-09-13 16:04:49 +0000 | [diff] [blame] | 329 | * If decodeInto() fails, it is possibe that we have an old subclass that |
| 330 | * does not, or cannot, implement that. In that case we fall back to the |
| 331 | * older protocol of having the pixelRef handle the caching for us. |
reed@google.com | d94697c | 2013-07-24 14:31:33 +0000 | [diff] [blame] | 332 | */ |
reed@google.com | cee9dcb | 2013-09-13 16:04:49 +0000 | [diff] [blame] | 333 | *dst = src; |
| 334 | dst->lockPixels(); |
| 335 | return SkToBool(dst->getPixels()); |
| 336 | } |
| 337 | |
| 338 | bool SkBitmapProcState::lockBaseBitmap() { |
reed@google.com | fa7fd80 | 2013-12-12 21:37:25 +0000 | [diff] [blame] | 339 | AutoScaledCacheUnlocker unlocker(&fScaledCacheID); |
| 340 | |
reed@google.com | cee9dcb | 2013-09-13 16:04:49 +0000 | [diff] [blame] | 341 | SkPixelRef* pr = fOrigBitmap.pixelRef(); |
| 342 | |
reed@google.com | fa7fd80 | 2013-12-12 21:37:25 +0000 | [diff] [blame] | 343 | SkASSERT(NULL == fScaledCacheID); |
| 344 | |
reed@google.com | cee9dcb | 2013-09-13 16:04:49 +0000 | [diff] [blame] | 345 | if (pr->isLocked() || !pr->implementsDecodeInto()) { |
| 346 | // fast-case, no need to look in our cache |
| 347 | fScaledBitmap = fOrigBitmap; |
reed@google.com | fa7fd80 | 2013-12-12 21:37:25 +0000 | [diff] [blame] | 348 | fScaledBitmap.lockPixels(); |
| 349 | if (NULL == fScaledBitmap.getPixels()) { |
| 350 | return false; |
| 351 | } |
reed@google.com | cee9dcb | 2013-09-13 16:04:49 +0000 | [diff] [blame] | 352 | } else { |
reed | 0461713 | 2014-08-21 09:46:49 -0700 | [diff] [blame^] | 353 | fScaledCacheID = SkBitmapCache::FindAndLock(fOrigBitmap, 1, 1, &fScaledBitmap); |
reed@google.com | fa7fd80 | 2013-12-12 21:37:25 +0000 | [diff] [blame] | 354 | if (fScaledCacheID) { |
| 355 | fScaledBitmap.lockPixels(); |
| 356 | if (!fScaledBitmap.getPixels()) { |
| 357 | fScaledBitmap.unlockPixels(); |
| 358 | // found a purged entry (discardablememory?), release it |
| 359 | SkScaledImageCache::Unlock(fScaledCacheID); |
| 360 | fScaledCacheID = NULL; |
| 361 | // fall through to rebuild |
| 362 | } |
| 363 | } |
| 364 | |
reed@google.com | cee9dcb | 2013-09-13 16:04:49 +0000 | [diff] [blame] | 365 | if (NULL == fScaledCacheID) { |
| 366 | if (!get_locked_pixels(fOrigBitmap, 0, &fScaledBitmap)) { |
| 367 | return false; |
| 368 | } |
| 369 | |
| 370 | // TODO: if fScaled comes back at a different width/height than fOrig, |
| 371 | // we need to update the matrix we are using to sample from this guy. |
| 372 | |
reed | 0461713 | 2014-08-21 09:46:49 -0700 | [diff] [blame^] | 373 | fScaledCacheID = SkBitmapCache::AddAndLock(fOrigBitmap, 1, 1, fScaledBitmap); |
reed@google.com | cee9dcb | 2013-09-13 16:04:49 +0000 | [diff] [blame] | 374 | if (!fScaledCacheID) { |
| 375 | fScaledBitmap.reset(); |
| 376 | return false; |
| 377 | } |
| 378 | } |
| 379 | } |
reed@google.com | cee9dcb | 2013-09-13 16:04:49 +0000 | [diff] [blame] | 380 | fBitmap = &fScaledBitmap; |
reed@google.com | fa7fd80 | 2013-12-12 21:37:25 +0000 | [diff] [blame] | 381 | unlocker.release(); |
reed@google.com | cee9dcb | 2013-09-13 16:04:49 +0000 | [diff] [blame] | 382 | return true; |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 383 | } |
| 384 | |
reed@google.com | 1e18225 | 2013-07-24 20:10:42 +0000 | [diff] [blame] | 385 | SkBitmapProcState::~SkBitmapProcState() { |
| 386 | if (fScaledCacheID) { |
| 387 | SkScaledImageCache::Unlock(fScaledCacheID); |
| 388 | } |
| 389 | SkDELETE(fBitmapFilter); |
| 390 | } |
| 391 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 392 | bool SkBitmapProcState::chooseProcs(const SkMatrix& inv, const SkPaint& paint) { |
reed@google.com | cee9dcb | 2013-09-13 16:04:49 +0000 | [diff] [blame] | 393 | SkASSERT(fOrigBitmap.width() && fOrigBitmap.height()); |
reed@android.com | a44b4cc | 2009-07-16 02:03:58 +0000 | [diff] [blame] | 394 | |
reed@google.com | cee9dcb | 2013-09-13 16:04:49 +0000 | [diff] [blame] | 395 | fBitmap = NULL; |
reed@google.com | ef0e319 | 2013-09-09 13:42:39 +0000 | [diff] [blame] | 396 | fInvMatrix = inv; |
reed@google.com | 9cfc83c | 2013-07-22 17:18:18 +0000 | [diff] [blame] | 397 | fFilterLevel = paint.getFilterLevel(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 398 | |
reed@google.com | fa7fd80 | 2013-12-12 21:37:25 +0000 | [diff] [blame] | 399 | SkASSERT(NULL == fScaledCacheID); |
| 400 | |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 401 | // possiblyScaleImage will look to see if it can rescale the image as a |
| 402 | // preprocess; either by scaling up to the target size, or by selecting |
| 403 | // a nearby mipmap level. If it does, it will adjust the working |
| 404 | // matrix as well as the working bitmap. It may also adjust the filter |
| 405 | // quality to avoid re-filtering an already perfectly scaled image. |
reed@google.com | cee9dcb | 2013-09-13 16:04:49 +0000 | [diff] [blame] | 406 | if (!this->possiblyScaleImage()) { |
| 407 | if (!this->lockBaseBitmap()) { |
| 408 | return false; |
| 409 | } |
| 410 | } |
reed@google.com | c294a97 | 2013-10-22 16:17:29 +0000 | [diff] [blame] | 411 | // The above logic should have always assigned fBitmap, but in case it |
| 412 | // didn't, we check for that now... |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 413 | // TODO(dominikg): Ask humper@ if we can just use an SkASSERT(fBitmap)? |
reed@google.com | c294a97 | 2013-10-22 16:17:29 +0000 | [diff] [blame] | 414 | if (NULL == fBitmap) { |
| 415 | return false; |
| 416 | } |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 417 | |
commit-bot@chromium.org | 84f7a06 | 2014-04-17 16:46:07 +0000 | [diff] [blame] | 418 | // If we are "still" kMedium_FilterLevel, then the request was not fulfilled by possiblyScale, |
| 419 | // so we downgrade to kLow (so the rest of the sniffing code can assume that) |
| 420 | if (SkPaint::kMedium_FilterLevel == fFilterLevel) { |
| 421 | fFilterLevel = SkPaint::kLow_FilterLevel; |
| 422 | } |
| 423 | |
reed@google.com | ef0e319 | 2013-09-09 13:42:39 +0000 | [diff] [blame] | 424 | bool trivialMatrix = (fInvMatrix.getType() & ~SkMatrix::kTranslate_Mask) == 0; |
| 425 | bool clampClamp = SkShader::kClamp_TileMode == fTileModeX && |
| 426 | SkShader::kClamp_TileMode == fTileModeY; |
skia.committer@gmail.com | 9a070f2 | 2013-09-10 07:01:44 +0000 | [diff] [blame] | 427 | |
reed@google.com | ef0e319 | 2013-09-09 13:42:39 +0000 | [diff] [blame] | 428 | if (!(clampClamp || trivialMatrix)) { |
| 429 | fInvMatrix.postIDiv(fOrigBitmap.width(), fOrigBitmap.height()); |
| 430 | } |
| 431 | |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 432 | // Now that all possible changes to the matrix have taken place, check |
| 433 | // to see if we're really close to a no-scale matrix. If so, explicitly |
| 434 | // set it to be so. Subsequent code may inspect this matrix to choose |
| 435 | // a faster path in this case. |
| 436 | |
| 437 | // This code will only execute if the matrix has some scale component; |
| 438 | // if it's already pure translate then we won't do this inversion. |
| 439 | |
| 440 | if (matrix_only_scale_translate(fInvMatrix)) { |
reed@google.com | ee056a8 | 2013-04-18 15:33:27 +0000 | [diff] [blame] | 441 | SkMatrix forward; |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 442 | if (fInvMatrix.invert(&forward)) { |
| 443 | if (clampClamp ? just_trans_clamp(forward, *fBitmap) |
reed@google.com | ee056a8 | 2013-04-18 15:33:27 +0000 | [diff] [blame] | 444 | : just_trans_general(forward)) { |
reed@google.com | ce1f3cc | 2013-01-05 14:37:48 +0000 | [diff] [blame] | 445 | SkScalar tx = -SkScalarRoundToScalar(forward.getTranslateX()); |
| 446 | SkScalar ty = -SkScalarRoundToScalar(forward.getTranslateY()); |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 447 | fInvMatrix.setTranslate(tx, ty); |
reed@google.com | ce1f3cc | 2013-01-05 14:37:48 +0000 | [diff] [blame] | 448 | } |
reed@google.com | c0e88e0 | 2012-10-17 21:11:56 +0000 | [diff] [blame] | 449 | } |
| 450 | } |
| 451 | |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 452 | fInvProc = fInvMatrix.getMapXYProc(); |
| 453 | fInvType = fInvMatrix.getType(); |
| 454 | fInvSx = SkScalarToFixed(fInvMatrix.getScaleX()); |
| 455 | fInvSxFractionalInt = SkScalarToFractionalInt(fInvMatrix.getScaleX()); |
| 456 | fInvKy = SkScalarToFixed(fInvMatrix.getSkewY()); |
| 457 | fInvKyFractionalInt = SkScalarToFractionalInt(fInvMatrix.getSkewY()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 458 | |
| 459 | fAlphaScale = SkAlpha255To256(paint.getAlpha()); |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame] | 460 | |
reed@android.com | 7a99eb1 | 2009-07-16 01:13:14 +0000 | [diff] [blame] | 461 | fShaderProc32 = NULL; |
| 462 | fShaderProc16 = NULL; |
| 463 | fSampleProc32 = NULL; |
| 464 | fSampleProc16 = NULL; |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame] | 465 | |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 466 | // recompute the triviality of the matrix here because we may have |
| 467 | // changed it! |
| 468 | |
| 469 | trivialMatrix = (fInvMatrix.getType() & ~SkMatrix::kTranslate_Mask) == 0; |
| 470 | |
reed@google.com | 9cfc83c | 2013-07-22 17:18:18 +0000 | [diff] [blame] | 471 | if (SkPaint::kHigh_FilterLevel == fFilterLevel) { |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 472 | // If this is still set, that means we wanted HQ sampling |
| 473 | // but couldn't do it as a preprocess. Let's try to install |
| 474 | // the scanline version of the HQ sampler. If that process fails, |
| 475 | // downgrade to bilerp. |
| 476 | |
| 477 | // NOTE: Might need to be careful here in the future when we want |
| 478 | // to have the platform proc have a shot at this; it's possible that |
| 479 | // the chooseBitmapFilterProc will fail to install a shader but a |
| 480 | // platform-specific one might succeed, so it might be premature here |
| 481 | // to fall back to bilerp. This needs thought. |
| 482 | |
mtklein@google.com | 0dc546c | 2013-08-26 16:21:35 +0000 | [diff] [blame] | 483 | if (!this->setBitmapFilterProcs()) { |
reed@google.com | 9cfc83c | 2013-07-22 17:18:18 +0000 | [diff] [blame] | 484 | fFilterLevel = SkPaint::kLow_FilterLevel; |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 485 | } |
| 486 | } |
| 487 | |
reed@google.com | 9cfc83c | 2013-07-22 17:18:18 +0000 | [diff] [blame] | 488 | if (SkPaint::kLow_FilterLevel == fFilterLevel) { |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 489 | // Only try bilerp if the matrix is "interesting" and |
| 490 | // the image has a suitable size. |
| 491 | |
| 492 | if (fInvType <= SkMatrix::kTranslate_Mask || |
reed@google.com | 9cfc83c | 2013-07-22 17:18:18 +0000 | [diff] [blame] | 493 | !valid_for_filtering(fBitmap->width() | fBitmap->height())) { |
| 494 | fFilterLevel = SkPaint::kNone_FilterLevel; |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 495 | } |
| 496 | } |
| 497 | |
| 498 | // At this point, we know exactly what kind of sampling the per-scanline |
| 499 | // shader will perform. |
| 500 | |
| 501 | fMatrixProc = this->chooseMatrixProc(trivialMatrix); |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 502 | // TODO(dominikg): SkASSERT(fMatrixProc) instead? chooseMatrixProc never returns NULL. |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 503 | if (NULL == fMatrixProc) { |
| 504 | return false; |
| 505 | } |
| 506 | |
| 507 | /////////////////////////////////////////////////////////////////////// |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 508 | |
reed | 00adc75 | 2014-07-12 21:10:52 -0700 | [diff] [blame] | 509 | const SkAlphaType at = fBitmap->alphaType(); |
| 510 | |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 511 | // No need to do this if we're doing HQ sampling; if filter quality is |
| 512 | // still set to HQ by the time we get here, then we must have installed |
mtklein@google.com | 0dc546c | 2013-08-26 16:21:35 +0000 | [diff] [blame] | 513 | // the shader procs above and can skip all this. |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 514 | |
reed@google.com | 9cfc83c | 2013-07-22 17:18:18 +0000 | [diff] [blame] | 515 | if (fFilterLevel < SkPaint::kHigh_FilterLevel) { |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame] | 516 | |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 517 | int index = 0; |
| 518 | if (fAlphaScale < 256) { // note: this distinction is not used for D16 |
| 519 | index |= 1; |
reed@android.com | aa9152a | 2009-07-17 21:24:56 +0000 | [diff] [blame] | 520 | } |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 521 | if (fInvType <= (SkMatrix::kTranslate_Mask | SkMatrix::kScale_Mask)) { |
| 522 | index |= 2; |
| 523 | } |
reed@google.com | 9cfc83c | 2013-07-22 17:18:18 +0000 | [diff] [blame] | 524 | if (fFilterLevel > SkPaint::kNone_FilterLevel) { |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 525 | index |= 4; |
| 526 | } |
| 527 | // bits 3,4,5 encoding the source bitmap format |
commit-bot@chromium.org | cba7378 | 2014-05-29 15:57:47 +0000 | [diff] [blame] | 528 | switch (fBitmap->colorType()) { |
| 529 | case kN32_SkColorType: |
reed | 00adc75 | 2014-07-12 21:10:52 -0700 | [diff] [blame] | 530 | if (kPremul_SkAlphaType != at && kOpaque_SkAlphaType != at) { |
| 531 | return false; |
| 532 | } |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 533 | index |= 0; |
| 534 | break; |
commit-bot@chromium.org | cba7378 | 2014-05-29 15:57:47 +0000 | [diff] [blame] | 535 | case kRGB_565_SkColorType: |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 536 | index |= 8; |
| 537 | break; |
commit-bot@chromium.org | cba7378 | 2014-05-29 15:57:47 +0000 | [diff] [blame] | 538 | case kIndex_8_SkColorType: |
reed | 00adc75 | 2014-07-12 21:10:52 -0700 | [diff] [blame] | 539 | if (kPremul_SkAlphaType != at && kOpaque_SkAlphaType != at) { |
| 540 | return false; |
| 541 | } |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 542 | index |= 16; |
| 543 | break; |
commit-bot@chromium.org | cba7378 | 2014-05-29 15:57:47 +0000 | [diff] [blame] | 544 | case kARGB_4444_SkColorType: |
reed | 00adc75 | 2014-07-12 21:10:52 -0700 | [diff] [blame] | 545 | if (kPremul_SkAlphaType != at && kOpaque_SkAlphaType != at) { |
| 546 | return false; |
| 547 | } |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 548 | index |= 24; |
| 549 | break; |
commit-bot@chromium.org | cba7378 | 2014-05-29 15:57:47 +0000 | [diff] [blame] | 550 | case kAlpha_8_SkColorType: |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 551 | index |= 32; |
| 552 | fPaintPMColor = SkPreMultiplyColor(paint.getColor()); |
| 553 | break; |
| 554 | default: |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 555 | // TODO(dominikg): Should we ever get here? SkASSERT(false) instead? |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 556 | return false; |
| 557 | } |
reed@android.com | c9a1d4b | 2009-08-03 15:05:55 +0000 | [diff] [blame] | 558 | |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 559 | #if !SK_ARM_NEON_IS_ALWAYS |
| 560 | static const SampleProc32 gSkBitmapProcStateSample32[] = { |
| 561 | S32_opaque_D32_nofilter_DXDY, |
| 562 | S32_alpha_D32_nofilter_DXDY, |
| 563 | S32_opaque_D32_nofilter_DX, |
| 564 | S32_alpha_D32_nofilter_DX, |
| 565 | S32_opaque_D32_filter_DXDY, |
| 566 | S32_alpha_D32_filter_DXDY, |
| 567 | S32_opaque_D32_filter_DX, |
| 568 | S32_alpha_D32_filter_DX, |
skia.committer@gmail.com | 3e2345a | 2013-05-24 07:01:26 +0000 | [diff] [blame] | 569 | |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 570 | S16_opaque_D32_nofilter_DXDY, |
| 571 | S16_alpha_D32_nofilter_DXDY, |
| 572 | S16_opaque_D32_nofilter_DX, |
| 573 | S16_alpha_D32_nofilter_DX, |
| 574 | S16_opaque_D32_filter_DXDY, |
| 575 | S16_alpha_D32_filter_DXDY, |
| 576 | S16_opaque_D32_filter_DX, |
| 577 | S16_alpha_D32_filter_DX, |
| 578 | |
| 579 | SI8_opaque_D32_nofilter_DXDY, |
| 580 | SI8_alpha_D32_nofilter_DXDY, |
| 581 | SI8_opaque_D32_nofilter_DX, |
| 582 | SI8_alpha_D32_nofilter_DX, |
| 583 | SI8_opaque_D32_filter_DXDY, |
| 584 | SI8_alpha_D32_filter_DXDY, |
| 585 | SI8_opaque_D32_filter_DX, |
| 586 | SI8_alpha_D32_filter_DX, |
| 587 | |
| 588 | S4444_opaque_D32_nofilter_DXDY, |
| 589 | S4444_alpha_D32_nofilter_DXDY, |
| 590 | S4444_opaque_D32_nofilter_DX, |
| 591 | S4444_alpha_D32_nofilter_DX, |
| 592 | S4444_opaque_D32_filter_DXDY, |
| 593 | S4444_alpha_D32_filter_DXDY, |
| 594 | S4444_opaque_D32_filter_DX, |
| 595 | S4444_alpha_D32_filter_DX, |
| 596 | |
| 597 | // A8 treats alpha/opaque the same (equally efficient) |
| 598 | SA8_alpha_D32_nofilter_DXDY, |
| 599 | SA8_alpha_D32_nofilter_DXDY, |
| 600 | SA8_alpha_D32_nofilter_DX, |
| 601 | SA8_alpha_D32_nofilter_DX, |
| 602 | SA8_alpha_D32_filter_DXDY, |
| 603 | SA8_alpha_D32_filter_DXDY, |
| 604 | SA8_alpha_D32_filter_DX, |
| 605 | SA8_alpha_D32_filter_DX |
| 606 | }; |
| 607 | |
| 608 | static const SampleProc16 gSkBitmapProcStateSample16[] = { |
| 609 | S32_D16_nofilter_DXDY, |
| 610 | S32_D16_nofilter_DX, |
| 611 | S32_D16_filter_DXDY, |
| 612 | S32_D16_filter_DX, |
| 613 | |
| 614 | S16_D16_nofilter_DXDY, |
| 615 | S16_D16_nofilter_DX, |
| 616 | S16_D16_filter_DXDY, |
| 617 | S16_D16_filter_DX, |
| 618 | |
| 619 | SI8_D16_nofilter_DXDY, |
| 620 | SI8_D16_nofilter_DX, |
| 621 | SI8_D16_filter_DXDY, |
| 622 | SI8_D16_filter_DX, |
| 623 | |
| 624 | // Don't support 4444 -> 565 |
| 625 | NULL, NULL, NULL, NULL, |
| 626 | // Don't support A8 -> 565 |
| 627 | NULL, NULL, NULL, NULL |
| 628 | }; |
| 629 | #endif |
| 630 | |
| 631 | fSampleProc32 = SK_ARM_NEON_WRAP(gSkBitmapProcStateSample32)[index]; |
| 632 | index >>= 1; // shift away any opaque/alpha distinction |
| 633 | fSampleProc16 = SK_ARM_NEON_WRAP(gSkBitmapProcStateSample16)[index]; |
| 634 | |
| 635 | // our special-case shaderprocs |
| 636 | if (SK_ARM_NEON_WRAP(S16_D16_filter_DX) == fSampleProc16) { |
| 637 | if (clampClamp) { |
| 638 | fShaderProc16 = SK_ARM_NEON_WRAP(Clamp_S16_D16_filter_DX_shaderproc); |
| 639 | } else if (SkShader::kRepeat_TileMode == fTileModeX && |
| 640 | SkShader::kRepeat_TileMode == fTileModeY) { |
| 641 | fShaderProc16 = SK_ARM_NEON_WRAP(Repeat_S16_D16_filter_DX_shaderproc); |
| 642 | } |
| 643 | } else if (SK_ARM_NEON_WRAP(SI8_opaque_D32_filter_DX) == fSampleProc32 && clampClamp) { |
| 644 | fShaderProc32 = SK_ARM_NEON_WRAP(Clamp_SI8_opaque_D32_filter_DX_shaderproc); |
| 645 | } |
| 646 | |
| 647 | if (NULL == fShaderProc32) { |
| 648 | fShaderProc32 = this->chooseShaderProc32(); |
| 649 | } |
humper@google.com | b088947 | 2013-07-09 21:37:14 +0000 | [diff] [blame] | 650 | } |
| 651 | |
reed@android.com | c9a1d4b | 2009-08-03 15:05:55 +0000 | [diff] [blame] | 652 | // see if our platform has any accelerated overrides |
| 653 | this->platformProcs(); |
reed@google.com | 4c69a06 | 2013-05-23 20:11:56 +0000 | [diff] [blame] | 654 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 655 | return true; |
| 656 | } |
| 657 | |
reed@google.com | 9a4c746 | 2012-10-12 18:21:37 +0000 | [diff] [blame] | 658 | static void Clamp_S32_D32_nofilter_trans_shaderproc(const SkBitmapProcState& s, |
| 659 | int x, int y, |
| 660 | SkPMColor* SK_RESTRICT colors, |
| 661 | int count) { |
| 662 | SkASSERT(((s.fInvType & ~SkMatrix::kTranslate_Mask)) == 0); |
| 663 | SkASSERT(s.fInvKy == 0); |
| 664 | SkASSERT(count > 0 && colors != NULL); |
reed@google.com | 9cfc83c | 2013-07-22 17:18:18 +0000 | [diff] [blame] | 665 | SkASSERT(SkPaint::kNone_FilterLevel == s.fFilterLevel); |
skia.committer@gmail.com | 20c301b | 2012-10-17 02:01:13 +0000 | [diff] [blame] | 666 | |
reed@google.com | 9a4c746 | 2012-10-12 18:21:37 +0000 | [diff] [blame] | 667 | const int maxX = s.fBitmap->width() - 1; |
reed@google.com | f7698de | 2012-10-12 20:50:24 +0000 | [diff] [blame] | 668 | const int maxY = s.fBitmap->height() - 1; |
| 669 | int ix = s.fFilterOneX + x; |
| 670 | int iy = SkClampMax(s.fFilterOneY + y, maxY); |
| 671 | #ifdef SK_DEBUG |
reed@google.com | 9a4c746 | 2012-10-12 18:21:37 +0000 | [diff] [blame] | 672 | { |
| 673 | SkPoint pt; |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 674 | s.fInvProc(s.fInvMatrix, SkIntToScalar(x) + SK_ScalarHalf, |
reed@google.com | 9a4c746 | 2012-10-12 18:21:37 +0000 | [diff] [blame] | 675 | SkIntToScalar(y) + SK_ScalarHalf, &pt); |
reed@google.com | f7698de | 2012-10-12 20:50:24 +0000 | [diff] [blame] | 676 | int iy2 = SkClampMax(SkScalarFloorToInt(pt.fY), maxY); |
| 677 | int ix2 = SkScalarFloorToInt(pt.fX); |
skia.committer@gmail.com | 20c301b | 2012-10-17 02:01:13 +0000 | [diff] [blame] | 678 | |
reed@google.com | f7698de | 2012-10-12 20:50:24 +0000 | [diff] [blame] | 679 | SkASSERT(iy == iy2); |
| 680 | SkASSERT(ix == ix2); |
reed@google.com | 9a4c746 | 2012-10-12 18:21:37 +0000 | [diff] [blame] | 681 | } |
reed@google.com | f7698de | 2012-10-12 20:50:24 +0000 | [diff] [blame] | 682 | #endif |
| 683 | const SkPMColor* row = s.fBitmap->getAddr32(0, iy); |
skia.committer@gmail.com | 20c301b | 2012-10-17 02:01:13 +0000 | [diff] [blame] | 684 | |
reed@google.com | 9a4c746 | 2012-10-12 18:21:37 +0000 | [diff] [blame] | 685 | // clamp to the left |
| 686 | if (ix < 0) { |
| 687 | int n = SkMin32(-ix, count); |
| 688 | sk_memset32(colors, row[0], n); |
| 689 | count -= n; |
| 690 | if (0 == count) { |
| 691 | return; |
| 692 | } |
| 693 | colors += n; |
| 694 | SkASSERT(-ix == n); |
| 695 | ix = 0; |
| 696 | } |
| 697 | // copy the middle |
| 698 | if (ix <= maxX) { |
| 699 | int n = SkMin32(maxX - ix + 1, count); |
| 700 | memcpy(colors, row + ix, n * sizeof(SkPMColor)); |
| 701 | count -= n; |
| 702 | if (0 == count) { |
| 703 | return; |
| 704 | } |
| 705 | colors += n; |
| 706 | } |
| 707 | SkASSERT(count > 0); |
| 708 | // clamp to the right |
| 709 | sk_memset32(colors, row[maxX], count); |
| 710 | } |
| 711 | |
reed@google.com | a8d9930 | 2012-10-16 20:23:25 +0000 | [diff] [blame] | 712 | static inline int sk_int_mod(int x, int n) { |
| 713 | SkASSERT(n > 0); |
| 714 | if ((unsigned)x >= (unsigned)n) { |
| 715 | if (x < 0) { |
| 716 | x = n + ~(~x % n); |
| 717 | } else { |
| 718 | x = x % n; |
| 719 | } |
| 720 | } |
| 721 | return x; |
| 722 | } |
| 723 | |
robertphillips@google.com | 8b8bf4d | 2013-01-18 16:38:40 +0000 | [diff] [blame] | 724 | static inline int sk_int_mirror(int x, int n) { |
| 725 | x = sk_int_mod(x, 2 * n); |
| 726 | if (x >= n) { |
| 727 | x = n + ~(x - n); |
| 728 | } |
| 729 | return x; |
| 730 | } |
| 731 | |
reed@google.com | a8d9930 | 2012-10-16 20:23:25 +0000 | [diff] [blame] | 732 | static void Repeat_S32_D32_nofilter_trans_shaderproc(const SkBitmapProcState& s, |
| 733 | int x, int y, |
| 734 | SkPMColor* SK_RESTRICT colors, |
| 735 | int count) { |
| 736 | SkASSERT(((s.fInvType & ~SkMatrix::kTranslate_Mask)) == 0); |
| 737 | SkASSERT(s.fInvKy == 0); |
| 738 | SkASSERT(count > 0 && colors != NULL); |
reed@google.com | 9cfc83c | 2013-07-22 17:18:18 +0000 | [diff] [blame] | 739 | SkASSERT(SkPaint::kNone_FilterLevel == s.fFilterLevel); |
skia.committer@gmail.com | 20c301b | 2012-10-17 02:01:13 +0000 | [diff] [blame] | 740 | |
reed@google.com | a8d9930 | 2012-10-16 20:23:25 +0000 | [diff] [blame] | 741 | const int stopX = s.fBitmap->width(); |
| 742 | const int stopY = s.fBitmap->height(); |
| 743 | int ix = s.fFilterOneX + x; |
| 744 | int iy = sk_int_mod(s.fFilterOneY + y, stopY); |
| 745 | #ifdef SK_DEBUG |
| 746 | { |
| 747 | SkPoint pt; |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 748 | s.fInvProc(s.fInvMatrix, SkIntToScalar(x) + SK_ScalarHalf, |
reed@google.com | a8d9930 | 2012-10-16 20:23:25 +0000 | [diff] [blame] | 749 | SkIntToScalar(y) + SK_ScalarHalf, &pt); |
| 750 | int iy2 = sk_int_mod(SkScalarFloorToInt(pt.fY), stopY); |
| 751 | int ix2 = SkScalarFloorToInt(pt.fX); |
skia.committer@gmail.com | 20c301b | 2012-10-17 02:01:13 +0000 | [diff] [blame] | 752 | |
reed@google.com | a8d9930 | 2012-10-16 20:23:25 +0000 | [diff] [blame] | 753 | SkASSERT(iy == iy2); |
| 754 | SkASSERT(ix == ix2); |
| 755 | } |
| 756 | #endif |
| 757 | const SkPMColor* row = s.fBitmap->getAddr32(0, iy); |
| 758 | |
| 759 | ix = sk_int_mod(ix, stopX); |
| 760 | for (;;) { |
| 761 | int n = SkMin32(stopX - ix, count); |
| 762 | memcpy(colors, row + ix, n * sizeof(SkPMColor)); |
| 763 | count -= n; |
| 764 | if (0 == count) { |
| 765 | return; |
| 766 | } |
| 767 | colors += n; |
| 768 | ix = 0; |
| 769 | } |
| 770 | } |
| 771 | |
robertphillips@google.com | 8b8bf4d | 2013-01-18 16:38:40 +0000 | [diff] [blame] | 772 | static void S32_D32_constX_shaderproc(const SkBitmapProcState& s, |
| 773 | int x, int y, |
| 774 | SkPMColor* SK_RESTRICT colors, |
| 775 | int count) { |
| 776 | SkASSERT((s.fInvType & ~(SkMatrix::kTranslate_Mask | SkMatrix::kScale_Mask)) == 0); |
| 777 | SkASSERT(s.fInvKy == 0); |
| 778 | SkASSERT(count > 0 && colors != NULL); |
| 779 | SkASSERT(1 == s.fBitmap->width()); |
| 780 | |
scroggo@google.com | ad51132 | 2013-02-22 15:50:37 +0000 | [diff] [blame] | 781 | int iY0; |
| 782 | int iY1 SK_INIT_TO_AVOID_WARNING; |
| 783 | int iSubY SK_INIT_TO_AVOID_WARNING; |
robertphillips@google.com | 8b8bf4d | 2013-01-18 16:38:40 +0000 | [diff] [blame] | 784 | |
reed@google.com | 9cfc83c | 2013-07-22 17:18:18 +0000 | [diff] [blame] | 785 | if (SkPaint::kNone_FilterLevel != s.fFilterLevel) { |
robertphillips@google.com | 8b8bf4d | 2013-01-18 16:38:40 +0000 | [diff] [blame] | 786 | SkBitmapProcState::MatrixProc mproc = s.getMatrixProc(); |
| 787 | uint32_t xy[2]; |
| 788 | |
| 789 | mproc(s, xy, 1, x, y); |
| 790 | |
| 791 | iY0 = xy[0] >> 18; |
| 792 | iY1 = xy[0] & 0x3FFF; |
| 793 | iSubY = (xy[0] >> 14) & 0xF; |
| 794 | } else { |
| 795 | int yTemp; |
| 796 | |
| 797 | if (s.fInvType > SkMatrix::kTranslate_Mask) { |
| 798 | SkPoint pt; |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 799 | s.fInvProc(s.fInvMatrix, |
robertphillips@google.com | 8b8bf4d | 2013-01-18 16:38:40 +0000 | [diff] [blame] | 800 | SkIntToScalar(x) + SK_ScalarHalf, |
skia.committer@gmail.com | 36df7ed | 2013-01-19 07:05:38 +0000 | [diff] [blame] | 801 | SkIntToScalar(y) + SK_ScalarHalf, |
robertphillips@google.com | 8b8bf4d | 2013-01-18 16:38:40 +0000 | [diff] [blame] | 802 | &pt); |
robertphillips@google.com | 1e30523 | 2013-01-22 20:29:16 +0000 | [diff] [blame] | 803 | // When the matrix has a scale component the setup code in |
skia.committer@gmail.com | 98ded84 | 2013-01-23 07:06:17 +0000 | [diff] [blame] | 804 | // chooseProcs multiples the inverse matrix by the inverse of the |
robertphillips@google.com | 1e30523 | 2013-01-22 20:29:16 +0000 | [diff] [blame] | 805 | // bitmap's width and height. Since this method is going to do |
| 806 | // its own tiling and sampling we need to undo that here. |
robertphillips@google.com | d507775 | 2013-01-23 00:36:02 +0000 | [diff] [blame] | 807 | if (SkShader::kClamp_TileMode != s.fTileModeX || |
| 808 | SkShader::kClamp_TileMode != s.fTileModeY) { |
| 809 | yTemp = SkScalarFloorToInt(pt.fY * s.fBitmap->height()); |
| 810 | } else { |
| 811 | yTemp = SkScalarFloorToInt(pt.fY); |
| 812 | } |
robertphillips@google.com | 8b8bf4d | 2013-01-18 16:38:40 +0000 | [diff] [blame] | 813 | } else { |
| 814 | yTemp = s.fFilterOneY + y; |
| 815 | } |
| 816 | |
| 817 | const int stopY = s.fBitmap->height(); |
| 818 | switch (s.fTileModeY) { |
| 819 | case SkShader::kClamp_TileMode: |
| 820 | iY0 = SkClampMax(yTemp, stopY-1); |
| 821 | break; |
| 822 | case SkShader::kRepeat_TileMode: |
| 823 | iY0 = sk_int_mod(yTemp, stopY); |
| 824 | break; |
| 825 | case SkShader::kMirror_TileMode: |
| 826 | default: |
| 827 | iY0 = sk_int_mirror(yTemp, stopY); |
| 828 | break; |
| 829 | } |
| 830 | |
| 831 | #ifdef SK_DEBUG |
| 832 | { |
| 833 | SkPoint pt; |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 834 | s.fInvProc(s.fInvMatrix, |
robertphillips@google.com | 8b8bf4d | 2013-01-18 16:38:40 +0000 | [diff] [blame] | 835 | SkIntToScalar(x) + SK_ScalarHalf, |
skia.committer@gmail.com | 36df7ed | 2013-01-19 07:05:38 +0000 | [diff] [blame] | 836 | SkIntToScalar(y) + SK_ScalarHalf, |
robertphillips@google.com | 8b8bf4d | 2013-01-18 16:38:40 +0000 | [diff] [blame] | 837 | &pt); |
robertphillips@google.com | d507775 | 2013-01-23 00:36:02 +0000 | [diff] [blame] | 838 | if (s.fInvType > SkMatrix::kTranslate_Mask && |
| 839 | (SkShader::kClamp_TileMode != s.fTileModeX || |
| 840 | SkShader::kClamp_TileMode != s.fTileModeY)) { |
robertphillips@google.com | 1e30523 | 2013-01-22 20:29:16 +0000 | [diff] [blame] | 841 | pt.fY *= s.fBitmap->height(); |
| 842 | } |
robertphillips@google.com | 8b8bf4d | 2013-01-18 16:38:40 +0000 | [diff] [blame] | 843 | int iY2; |
| 844 | |
| 845 | switch (s.fTileModeY) { |
| 846 | case SkShader::kClamp_TileMode: |
| 847 | iY2 = SkClampMax(SkScalarFloorToInt(pt.fY), stopY-1); |
| 848 | break; |
| 849 | case SkShader::kRepeat_TileMode: |
| 850 | iY2 = sk_int_mod(SkScalarFloorToInt(pt.fY), stopY); |
| 851 | break; |
| 852 | case SkShader::kMirror_TileMode: |
| 853 | default: |
| 854 | iY2 = sk_int_mirror(SkScalarFloorToInt(pt.fY), stopY); |
| 855 | break; |
| 856 | } |
| 857 | |
| 858 | SkASSERT(iY0 == iY2); |
| 859 | } |
| 860 | #endif |
| 861 | } |
| 862 | |
| 863 | const SkPMColor* row0 = s.fBitmap->getAddr32(0, iY0); |
| 864 | SkPMColor color; |
| 865 | |
reed@google.com | 9cfc83c | 2013-07-22 17:18:18 +0000 | [diff] [blame] | 866 | if (SkPaint::kNone_FilterLevel != s.fFilterLevel) { |
robertphillips@google.com | 8b8bf4d | 2013-01-18 16:38:40 +0000 | [diff] [blame] | 867 | const SkPMColor* row1 = s.fBitmap->getAddr32(0, iY1); |
| 868 | |
| 869 | if (s.fAlphaScale < 256) { |
| 870 | Filter_32_alpha(iSubY, *row0, *row1, &color, s.fAlphaScale); |
| 871 | } else { |
| 872 | Filter_32_opaque(iSubY, *row0, *row1, &color); |
| 873 | } |
| 874 | } else { |
| 875 | if (s.fAlphaScale < 256) { |
| 876 | color = SkAlphaMulQ(*row0, s.fAlphaScale); |
| 877 | } else { |
| 878 | color = *row0; |
| 879 | } |
| 880 | } |
| 881 | |
| 882 | sk_memset32(colors, color, count); |
| 883 | } |
| 884 | |
reed@google.com | 6bb92bc | 2012-11-20 19:45:16 +0000 | [diff] [blame] | 885 | static void DoNothing_shaderproc(const SkBitmapProcState&, int x, int y, |
| 886 | SkPMColor* SK_RESTRICT colors, int count) { |
| 887 | // if we get called, the matrix is too tricky, so we just draw nothing |
| 888 | sk_memset32(colors, 0, count); |
| 889 | } |
| 890 | |
| 891 | bool SkBitmapProcState::setupForTranslate() { |
reed@google.com | a8d9930 | 2012-10-16 20:23:25 +0000 | [diff] [blame] | 892 | SkPoint pt; |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 893 | fInvProc(fInvMatrix, SK_ScalarHalf, SK_ScalarHalf, &pt); |
reed@google.com | 6bb92bc | 2012-11-20 19:45:16 +0000 | [diff] [blame] | 894 | |
| 895 | /* |
| 896 | * if the translate is larger than our ints, we can get random results, or |
| 897 | * worse, we might get 0x80000000, which wreaks havoc on us, since we can't |
| 898 | * negate it. |
| 899 | */ |
| 900 | const SkScalar too_big = SkIntToScalar(1 << 30); |
| 901 | if (SkScalarAbs(pt.fX) > too_big || SkScalarAbs(pt.fY) > too_big) { |
| 902 | return false; |
| 903 | } |
| 904 | |
reed@google.com | a8d9930 | 2012-10-16 20:23:25 +0000 | [diff] [blame] | 905 | // Since we know we're not filtered, we re-purpose these fields allow |
| 906 | // us to go from device -> src coordinates w/ just an integer add, |
| 907 | // rather than running through the inverse-matrix |
| 908 | fFilterOneX = SkScalarFloorToInt(pt.fX); |
| 909 | fFilterOneY = SkScalarFloorToInt(pt.fY); |
reed@google.com | 6bb92bc | 2012-11-20 19:45:16 +0000 | [diff] [blame] | 910 | return true; |
reed@google.com | a8d9930 | 2012-10-16 20:23:25 +0000 | [diff] [blame] | 911 | } |
| 912 | |
reed@google.com | 9a4c746 | 2012-10-12 18:21:37 +0000 | [diff] [blame] | 913 | SkBitmapProcState::ShaderProc32 SkBitmapProcState::chooseShaderProc32() { |
robertphillips@google.com | 8b8bf4d | 2013-01-18 16:38:40 +0000 | [diff] [blame] | 914 | |
commit-bot@chromium.org | cba7378 | 2014-05-29 15:57:47 +0000 | [diff] [blame] | 915 | if (kN32_SkColorType != fBitmap->colorType()) { |
robertphillips@google.com | 8b8bf4d | 2013-01-18 16:38:40 +0000 | [diff] [blame] | 916 | return NULL; |
| 917 | } |
| 918 | |
| 919 | static const unsigned kMask = SkMatrix::kTranslate_Mask | SkMatrix::kScale_Mask; |
| 920 | |
| 921 | if (1 == fBitmap->width() && 0 == (fInvType & ~kMask)) { |
reed@google.com | 9cfc83c | 2013-07-22 17:18:18 +0000 | [diff] [blame] | 922 | if (SkPaint::kNone_FilterLevel == fFilterLevel && |
humper@google.com | 9c96d4b | 2013-07-14 01:44:59 +0000 | [diff] [blame] | 923 | fInvType <= SkMatrix::kTranslate_Mask && |
| 924 | !this->setupForTranslate()) { |
robertphillips@google.com | 8b8bf4d | 2013-01-18 16:38:40 +0000 | [diff] [blame] | 925 | return DoNothing_shaderproc; |
| 926 | } |
| 927 | return S32_D32_constX_shaderproc; |
| 928 | } |
| 929 | |
reed@google.com | 9a4c746 | 2012-10-12 18:21:37 +0000 | [diff] [blame] | 930 | if (fAlphaScale < 256) { |
| 931 | return NULL; |
| 932 | } |
| 933 | if (fInvType > SkMatrix::kTranslate_Mask) { |
| 934 | return NULL; |
| 935 | } |
reed@google.com | 9cfc83c | 2013-07-22 17:18:18 +0000 | [diff] [blame] | 936 | if (SkPaint::kNone_FilterLevel != fFilterLevel) { |
reed@google.com | 9a4c746 | 2012-10-12 18:21:37 +0000 | [diff] [blame] | 937 | return NULL; |
| 938 | } |
reed@google.com | 9a4c746 | 2012-10-12 18:21:37 +0000 | [diff] [blame] | 939 | |
reed@google.com | a8d9930 | 2012-10-16 20:23:25 +0000 | [diff] [blame] | 940 | SkShader::TileMode tx = (SkShader::TileMode)fTileModeX; |
| 941 | SkShader::TileMode ty = (SkShader::TileMode)fTileModeY; |
| 942 | |
| 943 | if (SkShader::kClamp_TileMode == tx && SkShader::kClamp_TileMode == ty) { |
reed@google.com | 6bb92bc | 2012-11-20 19:45:16 +0000 | [diff] [blame] | 944 | if (this->setupForTranslate()) { |
| 945 | return Clamp_S32_D32_nofilter_trans_shaderproc; |
| 946 | } |
| 947 | return DoNothing_shaderproc; |
reed@google.com | 9a4c746 | 2012-10-12 18:21:37 +0000 | [diff] [blame] | 948 | } |
reed@google.com | a8d9930 | 2012-10-16 20:23:25 +0000 | [diff] [blame] | 949 | if (SkShader::kRepeat_TileMode == tx && SkShader::kRepeat_TileMode == ty) { |
reed@google.com | 6bb92bc | 2012-11-20 19:45:16 +0000 | [diff] [blame] | 950 | if (this->setupForTranslate()) { |
| 951 | return Repeat_S32_D32_nofilter_trans_shaderproc; |
| 952 | } |
| 953 | return DoNothing_shaderproc; |
reed@google.com | a8d9930 | 2012-10-16 20:23:25 +0000 | [diff] [blame] | 954 | } |
reed@google.com | 9a4c746 | 2012-10-12 18:21:37 +0000 | [diff] [blame] | 955 | return NULL; |
| 956 | } |
| 957 | |
reed@android.com | 4c128c4 | 2009-08-14 13:54:37 +0000 | [diff] [blame] | 958 | /////////////////////////////////////////////////////////////////////////////// |
reed@google.com | 9fe287b | 2012-03-27 15:54:28 +0000 | [diff] [blame] | 959 | |
| 960 | #ifdef SK_DEBUG |
| 961 | |
| 962 | static void check_scale_nofilter(uint32_t bitmapXY[], int count, |
| 963 | unsigned mx, unsigned my) { |
| 964 | unsigned y = *bitmapXY++; |
| 965 | SkASSERT(y < my); |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 966 | |
reed@google.com | 9fe287b | 2012-03-27 15:54:28 +0000 | [diff] [blame] | 967 | const uint16_t* xptr = reinterpret_cast<const uint16_t*>(bitmapXY); |
| 968 | for (int i = 0; i < count; ++i) { |
| 969 | SkASSERT(xptr[i] < mx); |
| 970 | } |
| 971 | } |
| 972 | |
| 973 | static void check_scale_filter(uint32_t bitmapXY[], int count, |
| 974 | unsigned mx, unsigned my) { |
| 975 | uint32_t YY = *bitmapXY++; |
| 976 | unsigned y0 = YY >> 18; |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 977 | unsigned y1 = YY & 0x3FFF; |
reed@google.com | 9fe287b | 2012-03-27 15:54:28 +0000 | [diff] [blame] | 978 | SkASSERT(y0 < my); |
| 979 | SkASSERT(y1 < my); |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 980 | |
reed@google.com | 9fe287b | 2012-03-27 15:54:28 +0000 | [diff] [blame] | 981 | for (int i = 0; i < count; ++i) { |
| 982 | uint32_t XX = bitmapXY[i]; |
| 983 | unsigned x0 = XX >> 18; |
| 984 | unsigned x1 = XX & 0x3FFF; |
| 985 | SkASSERT(x0 < mx); |
| 986 | SkASSERT(x1 < mx); |
| 987 | } |
| 988 | } |
| 989 | |
| 990 | static void check_affine_nofilter(uint32_t bitmapXY[], int count, |
| 991 | unsigned mx, unsigned my) { |
| 992 | for (int i = 0; i < count; ++i) { |
| 993 | uint32_t XY = bitmapXY[i]; |
| 994 | unsigned x = XY & 0xFFFF; |
| 995 | unsigned y = XY >> 16; |
| 996 | SkASSERT(x < mx); |
| 997 | SkASSERT(y < my); |
| 998 | } |
| 999 | } |
| 1000 | |
| 1001 | static void check_affine_filter(uint32_t bitmapXY[], int count, |
| 1002 | unsigned mx, unsigned my) { |
| 1003 | for (int i = 0; i < count; ++i) { |
| 1004 | uint32_t YY = *bitmapXY++; |
| 1005 | unsigned y0 = YY >> 18; |
| 1006 | unsigned y1 = YY & 0x3FFF; |
| 1007 | SkASSERT(y0 < my); |
| 1008 | SkASSERT(y1 < my); |
| 1009 | |
| 1010 | uint32_t XX = *bitmapXY++; |
| 1011 | unsigned x0 = XX >> 18; |
| 1012 | unsigned x1 = XX & 0x3FFF; |
| 1013 | SkASSERT(x0 < mx); |
| 1014 | SkASSERT(x1 < mx); |
| 1015 | } |
| 1016 | } |
| 1017 | |
| 1018 | void SkBitmapProcState::DebugMatrixProc(const SkBitmapProcState& state, |
| 1019 | uint32_t bitmapXY[], int count, |
| 1020 | int x, int y) { |
| 1021 | SkASSERT(bitmapXY); |
| 1022 | SkASSERT(count > 0); |
| 1023 | |
| 1024 | state.fMatrixProc(state, bitmapXY, count, x, y); |
| 1025 | |
| 1026 | void (*proc)(uint32_t bitmapXY[], int count, unsigned mx, unsigned my); |
| 1027 | |
| 1028 | // There are four formats possible: |
| 1029 | // scale -vs- affine |
| 1030 | // filter -vs- nofilter |
| 1031 | if (state.fInvType <= (SkMatrix::kTranslate_Mask | SkMatrix::kScale_Mask)) { |
reed@google.com | 9cfc83c | 2013-07-22 17:18:18 +0000 | [diff] [blame] | 1032 | proc = state.fFilterLevel != SkPaint::kNone_FilterLevel ? check_scale_filter : check_scale_nofilter; |
reed@google.com | 9fe287b | 2012-03-27 15:54:28 +0000 | [diff] [blame] | 1033 | } else { |
reed@google.com | 9cfc83c | 2013-07-22 17:18:18 +0000 | [diff] [blame] | 1034 | proc = state.fFilterLevel != SkPaint::kNone_FilterLevel ? check_affine_filter : check_affine_nofilter; |
reed@google.com | 9fe287b | 2012-03-27 15:54:28 +0000 | [diff] [blame] | 1035 | } |
| 1036 | proc(bitmapXY, count, state.fBitmap->width(), state.fBitmap->height()); |
| 1037 | } |
| 1038 | |
| 1039 | SkBitmapProcState::MatrixProc SkBitmapProcState::getMatrixProc() const { |
| 1040 | return DebugMatrixProc; |
| 1041 | } |
| 1042 | |
| 1043 | #endif |
| 1044 | |
| 1045 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 4c128c4 | 2009-08-14 13:54:37 +0000 | [diff] [blame] | 1046 | /* |
| 1047 | The storage requirements for the different matrix procs are as follows, |
| 1048 | where each X or Y is 2 bytes, and N is the number of pixels/elements: |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 1049 | |
reed@android.com | 4c128c4 | 2009-08-14 13:54:37 +0000 | [diff] [blame] | 1050 | scale/translate nofilter Y(4bytes) + N * X |
| 1051 | affine/perspective nofilter N * (X Y) |
| 1052 | scale/translate filter Y Y + N * (X X) |
| 1053 | affine/perspective filter N * (Y Y X X) |
| 1054 | */ |
| 1055 | int SkBitmapProcState::maxCountForBufferSize(size_t bufferSize) const { |
| 1056 | int32_t size = static_cast<int32_t>(bufferSize); |
reed@android.com | 4c128c4 | 2009-08-14 13:54:37 +0000 | [diff] [blame] | 1057 | |
| 1058 | size &= ~3; // only care about 4-byte aligned chunks |
| 1059 | if (fInvType <= (SkMatrix::kTranslate_Mask | SkMatrix::kScale_Mask)) { |
| 1060 | size -= 4; // the shared Y (or YY) coordinate |
| 1061 | if (size < 0) { |
| 1062 | size = 0; |
| 1063 | } |
reed@android.com | 258cb22 | 2010-04-14 13:36:33 +0000 | [diff] [blame] | 1064 | size >>= 1; |
reed@android.com | 4c128c4 | 2009-08-14 13:54:37 +0000 | [diff] [blame] | 1065 | } else { |
reed@android.com | 258cb22 | 2010-04-14 13:36:33 +0000 | [diff] [blame] | 1066 | size >>= 2; |
reed@android.com | 4c128c4 | 2009-08-14 13:54:37 +0000 | [diff] [blame] | 1067 | } |
| 1068 | |
reed@google.com | 9cfc83c | 2013-07-22 17:18:18 +0000 | [diff] [blame] | 1069 | if (fFilterLevel != SkPaint::kNone_FilterLevel) { |
reed@android.com | 258cb22 | 2010-04-14 13:36:33 +0000 | [diff] [blame] | 1070 | size >>= 1; |
| 1071 | } |
| 1072 | |
| 1073 | return size; |
reed@android.com | 4c128c4 | 2009-08-14 13:54:37 +0000 | [diff] [blame] | 1074 | } |