epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 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 | */ |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 8 | #include "SkBitmapProcState.h" |
| 9 | #include "SkColorPriv.h" |
| 10 | #include "SkFilterProc.h" |
| 11 | #include "SkPaint.h" |
| 12 | #include "SkShader.h" // for tilemodes |
digit@google.com | 3ada0ef | 2012-08-13 14:06:34 +0000 | [diff] [blame] | 13 | #include "SkUtilsArm.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 14 | |
digit@google.com | 3ada0ef | 2012-08-13 14:06:34 +0000 | [diff] [blame] | 15 | #if !SK_ARM_NEON_IS_NONE |
| 16 | // These are defined in src/opts/SkBitmapProcState_arm_neon.cpp |
| 17 | extern const SkBitmapProcState::SampleProc16 gSkBitmapProcStateSample16_neon[]; |
| 18 | extern const SkBitmapProcState::SampleProc32 gSkBitmapProcStateSample32_neon[]; |
| 19 | extern void S16_D16_filter_DX_neon(const SkBitmapProcState&, const uint32_t*, int, uint16_t*); |
| 20 | extern void Clamp_S16_D16_filter_DX_shaderproc_neon(const SkBitmapProcState&, int, int, uint16_t*, int); |
| 21 | extern void Repeat_S16_D16_filter_DX_shaderproc_neon(const SkBitmapProcState&, int, int, uint16_t*, int); |
| 22 | extern void SI8_opaque_D32_filter_DX_neon(const SkBitmapProcState&, const uint32_t*, int, SkPMColor*); |
| 23 | extern void SI8_opaque_D32_filter_DX_shaderproc_neon(const SkBitmapProcState&, int, int, uint32_t*, int); |
| 24 | extern void Clamp_SI8_opaque_D32_filter_DX_shaderproc_neon(const SkBitmapProcState&, int, int, uint32_t*, int); |
| 25 | #endif |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 26 | |
digit@google.com | 3ada0ef | 2012-08-13 14:06:34 +0000 | [diff] [blame] | 27 | #define NAME_WRAP(x) x |
| 28 | #include "SkBitmapProcState_filter.h" |
| 29 | #include "SkBitmapProcState_procs.h" |
reed@android.com | b577b41 | 2009-10-27 17:49:32 +0000 | [diff] [blame] | 30 | |
reed@android.com | a44b4cc | 2009-07-16 02:03:58 +0000 | [diff] [blame] | 31 | /////////////////////////////////////////////////////////////////////////////// |
| 32 | |
reed@google.com | ee056a8 | 2013-04-18 15:33:27 +0000 | [diff] [blame] | 33 | // true iff the matrix contains, at most, scale and translate elements |
| 34 | static bool matrix_only_scale_translate(const SkMatrix& m) { |
| 35 | return m.getType() <= (SkMatrix::kScale_Mask | SkMatrix::kTranslate_Mask); |
| 36 | } |
| 37 | |
reed@google.com | c0e88e0 | 2012-10-17 21:11:56 +0000 | [diff] [blame] | 38 | /** |
| 39 | * For the purposes of drawing bitmaps, if a matrix is "almost" translate |
| 40 | * go ahead and treat it as if it were, so that subsequent code can go fast. |
| 41 | */ |
| 42 | static bool just_trans_clamp(const SkMatrix& matrix, const SkBitmap& bitmap) { |
reed@google.com | ee056a8 | 2013-04-18 15:33:27 +0000 | [diff] [blame] | 43 | SkASSERT(matrix_only_scale_translate(matrix)); |
reed@google.com | c0e88e0 | 2012-10-17 21:11:56 +0000 | [diff] [blame] | 44 | |
reed@google.com | ee056a8 | 2013-04-18 15:33:27 +0000 | [diff] [blame] | 45 | if (matrix.getType() & SkMatrix::kScale_Mask) { |
| 46 | SkRect src, dst; |
| 47 | bitmap.getBounds(&src); |
reed@google.com | f707adc | 2013-04-18 15:37:14 +0000 | [diff] [blame] | 48 | |
| 49 | // Can't call mapRect(), since that will fix up inverted rectangles, |
| 50 | // e.g. when scale is negative, and we don't want to return true for |
| 51 | // those. |
| 52 | matrix.mapPoints(SkTCast<SkPoint*>(&dst), |
| 53 | SkTCast<const SkPoint*>(&src), |
| 54 | 2); |
reed@google.com | ee056a8 | 2013-04-18 15:33:27 +0000 | [diff] [blame] | 55 | |
| 56 | // Now round all 4 edges to device space, and then compare the device |
| 57 | // width/height to the original. Note: we must map all 4 and subtract |
| 58 | // rather than map the "width" and compare, since we care about the |
| 59 | // phase (in pixel space) that any translate in the matrix might impart. |
| 60 | SkIRect idst; |
| 61 | dst.round(&idst); |
| 62 | return idst.width() == bitmap.width() && idst.height() == bitmap.height(); |
reed@google.com | c0e88e0 | 2012-10-17 21:11:56 +0000 | [diff] [blame] | 63 | } |
| 64 | // if we got here, we're either kTranslate_Mask or identity |
| 65 | return true; |
| 66 | } |
| 67 | |
| 68 | static bool just_trans_general(const SkMatrix& matrix) { |
reed@google.com | ee056a8 | 2013-04-18 15:33:27 +0000 | [diff] [blame] | 69 | SkASSERT(matrix_only_scale_translate(matrix)); |
reed@google.com | c0e88e0 | 2012-10-17 21:11:56 +0000 | [diff] [blame] | 70 | |
reed@google.com | ee056a8 | 2013-04-18 15:33:27 +0000 | [diff] [blame] | 71 | if (matrix.getType() & SkMatrix::kScale_Mask) { |
reed@google.com | c0e88e0 | 2012-10-17 21:11:56 +0000 | [diff] [blame] | 72 | const SkScalar tol = SK_Scalar1 / 32768; |
skia.committer@gmail.com | 989a95e | 2012-10-18 02:01:23 +0000 | [diff] [blame] | 73 | |
reed@google.com | c0e88e0 | 2012-10-17 21:11:56 +0000 | [diff] [blame] | 74 | if (!SkScalarNearlyZero(matrix[SkMatrix::kMScaleX] - SK_Scalar1, tol)) { |
| 75 | return false; |
| 76 | } |
| 77 | if (!SkScalarNearlyZero(matrix[SkMatrix::kMScaleY] - SK_Scalar1, tol)) { |
| 78 | return false; |
| 79 | } |
| 80 | } |
| 81 | // if we got here, treat us as either kTranslate_Mask or identity |
| 82 | return true; |
| 83 | } |
| 84 | |
| 85 | /////////////////////////////////////////////////////////////////////////////// |
| 86 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 87 | static bool valid_for_filtering(unsigned dimension) { |
| 88 | // for filtering, width and height must fit in 14bits, since we use steal |
| 89 | // 2 bits from each to store our 4bit subpixel data |
| 90 | return (dimension & ~0x3FFF) == 0; |
| 91 | } |
| 92 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 93 | // TODO -- we may want to pass the clip into this function so we only scale |
| 94 | // the portion of the image that we're going to need. This will complicate |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 95 | // the interface to the cache, but might be well worth it. |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 96 | |
| 97 | void SkBitmapProcState::possiblyScaleImage() { |
| 98 | |
| 99 | if (fFilterQuality != kHQ_BitmapFilter) { |
| 100 | return; |
| 101 | } |
| 102 | |
| 103 | // STEP 1: UPSAMPLE? |
| 104 | |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 105 | // Check to see if the transformation matrix is scaling up, and if |
| 106 | // the matrix is simple, and if we're doing high quality scaling. |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 107 | // If so, do the bitmap scale here and remove the scaling component from the matrix. |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 108 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 109 | if (fInvMatrix.getType() <= (SkMatrix::kScale_Mask | SkMatrix::kTranslate_Mask) && |
| 110 | (fInvMatrix.getScaleX() < 1 || fInvMatrix.getScaleY() < 1) && |
| 111 | fOrigBitmap.config() == SkBitmap::kARGB_8888_Config) { |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 112 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 113 | // All the criteria are met; let's make a new bitmap. |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 114 | fScaledBitmap.setConfig(SkBitmap::kARGB_8888_Config, |
| 115 | (int)(fOrigBitmap.width() / fInvMatrix.getScaleX()), |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 116 | (int)(fOrigBitmap.height() / fInvMatrix.getScaleY())); |
| 117 | fScaledBitmap.allocPixels(); |
| 118 | fOrigBitmap.scale(&fScaledBitmap); |
| 119 | fBitmap = &fScaledBitmap; |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 120 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 121 | // set the inv matrix type to translate-only; |
| 122 | |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 123 | fInvMatrix.setTranslate( 1/fInvMatrix.getScaleX() * fInvMatrix.getTranslateX(), |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 124 | 1/fInvMatrix.getScaleY() * fInvMatrix.getTranslateY() ); |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 125 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 126 | // no need for any further filtering; we just did it! |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 127 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 128 | fFilterQuality = kNone_BitmapFilter; |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 129 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 130 | return; |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 131 | } |
| 132 | |
| 133 | if (!fOrigBitmap.hasMipMap()) { |
| 134 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 135 | // STEP 2: DOWNSAMPLE |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 136 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 137 | // Check to see if the transformation matrix is scaling *down*. |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 138 | // If so, automatically build mipmaps. |
| 139 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 140 | SkPoint v1, v2; |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 141 | |
| 142 | // conservatively estimate if the matrix is scaling down by seeing |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 143 | // what its upper left 2x2 portion does to two unit vectors. |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 144 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 145 | v1.fX = fInvMatrix.getScaleX(); |
| 146 | v1.fY = fInvMatrix.getSkewY(); |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 147 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 148 | v2.fX = fInvMatrix.getSkewX(); |
| 149 | v2.fY = fInvMatrix.getScaleY(); |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 150 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 151 | if (v1.fX * v1.fX + v1.fY * v1.fY > 1 || |
| 152 | v2.fX * v2.fX + v2.fY * v2.fY > 1) { |
| 153 | fOrigBitmap.buildMipMap(); |
| 154 | |
| 155 | // Now that we've built the mipmaps and we know we're downsampling, |
| 156 | // downgrade to bilinear interpolation for the mip level. |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 157 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 158 | fFilterQuality = kBilerp_BitmapFilter; |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 159 | } |
| 160 | } |
| 161 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 162 | if (fOrigBitmap.hasMipMap()) { |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 163 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 164 | // STEP 3: We've got mipmaps, let's choose the closest level as our render |
| 165 | // source and adjust the matrix accordingly. |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 166 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 167 | int shift = fOrigBitmap.extractMipLevel(&fScaledBitmap, |
| 168 | SkScalarToFixed(fInvMatrix.getScaleX()), |
| 169 | SkScalarToFixed(fInvMatrix.getSkewY())); |
| 170 | |
| 171 | if (shift > 0) { |
| 172 | SkScalar scale = SkFixedToScalar(SK_Fixed1 >> shift); |
| 173 | fInvMatrix.postScale(scale, scale); |
| 174 | fBitmap = &fScaledBitmap; |
| 175 | } |
| 176 | } |
| 177 | } |
| 178 | |
| 179 | void SkBitmapProcState::endContext() { |
| 180 | SkDELETE(fBitmapFilter); |
| 181 | fBitmapFilter = NULL; |
| 182 | fScaledBitmap.reset(); |
| 183 | } |
| 184 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 185 | bool SkBitmapProcState::chooseProcs(const SkMatrix& inv, const SkPaint& paint) { |
| 186 | if (fOrigBitmap.width() == 0 || fOrigBitmap.height() == 0) { |
| 187 | return false; |
| 188 | } |
reed@android.com | a44b4cc | 2009-07-16 02:03:58 +0000 | [diff] [blame] | 189 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 190 | bool trivialMatrix = (inv.getType() & ~SkMatrix::kTranslate_Mask) == 0; |
| 191 | bool clampClamp = SkShader::kClamp_TileMode == fTileModeX && |
robertphillips@google.com | 8b8bf4d | 2013-01-18 16:38:40 +0000 | [diff] [blame] | 192 | SkShader::kClamp_TileMode == fTileModeY; |
reed@android.com | 07d1f00 | 2009-08-13 19:35:48 +0000 | [diff] [blame] | 193 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 194 | fInvMatrix = inv; |
| 195 | if (!(clampClamp || trivialMatrix)) { |
| 196 | fInvMatrix.postIDiv(fOrigBitmap.width(), fOrigBitmap.height()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 197 | } |
reed@android.com | 07d1f00 | 2009-08-13 19:35:48 +0000 | [diff] [blame] | 198 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 199 | fBitmap = &fOrigBitmap; |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 200 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 201 | // initialize our filter quality to the one requested by the caller. |
| 202 | // We may downgrade it later if we determine that we either don't need |
| 203 | // or can't provide as high a quality filtering as the user requested. |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 204 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 205 | fFilterQuality = kNone_BitmapFilter; |
| 206 | if (paint.isFilterBitmap()) { |
| 207 | if (paint.getFlags() & SkPaint::kHighQualityFilterBitmap_Flag) { |
| 208 | fFilterQuality = kHQ_BitmapFilter; |
| 209 | } else { |
| 210 | fFilterQuality = kBilerp_BitmapFilter; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 211 | } |
| 212 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 213 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 214 | #ifndef SK_IGNORE_IMAGE_PRESCALE |
| 215 | // possiblyScaleImage will look to see if it can rescale the image as a |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 216 | // preprocess; either by scaling up to the target size, or by selecting |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 217 | // a nearby mipmap level. If it does, it will adjust the working |
| 218 | // matrix as well as the working bitmap. It may also adjust the filter |
| 219 | // quality to avoid re-filtering an already perfectly scaled image. |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 220 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 221 | this->possiblyScaleImage(); |
| 222 | #endif |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 223 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 224 | // Now that all possible changes to the matrix have taken place, check |
| 225 | // to see if we're really close to a no-scale matrix. If so, explicitly |
| 226 | // set it to be so. Subsequent code may inspect this matrix to choose |
| 227 | // a faster path in this case. |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 228 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 229 | // This code will only execute if the matrix has some scale component; |
| 230 | // if it's already pure translate then we won't do this inversion. |
| 231 | |
| 232 | if (matrix_only_scale_translate(fInvMatrix)) { |
reed@google.com | ee056a8 | 2013-04-18 15:33:27 +0000 | [diff] [blame] | 233 | SkMatrix forward; |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 234 | if (fInvMatrix.invert(&forward)) { |
| 235 | if (clampClamp ? just_trans_clamp(forward, *fBitmap) |
reed@google.com | ee056a8 | 2013-04-18 15:33:27 +0000 | [diff] [blame] | 236 | : just_trans_general(forward)) { |
reed@google.com | ce1f3cc | 2013-01-05 14:37:48 +0000 | [diff] [blame] | 237 | SkScalar tx = -SkScalarRoundToScalar(forward.getTranslateX()); |
| 238 | SkScalar ty = -SkScalarRoundToScalar(forward.getTranslateY()); |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 239 | fInvMatrix.setTranslate(tx, ty); |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 240 | |
reed@google.com | ce1f3cc | 2013-01-05 14:37:48 +0000 | [diff] [blame] | 241 | } |
reed@google.com | c0e88e0 | 2012-10-17 21:11:56 +0000 | [diff] [blame] | 242 | } |
| 243 | } |
| 244 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 245 | fInvProc = fInvMatrix.getMapXYProc(); |
| 246 | fInvType = fInvMatrix.getType(); |
| 247 | fInvSx = SkScalarToFixed(fInvMatrix.getScaleX()); |
| 248 | fInvSxFractionalInt = SkScalarToFractionalInt(fInvMatrix.getScaleX()); |
| 249 | fInvKy = SkScalarToFixed(fInvMatrix.getSkewY()); |
| 250 | fInvKyFractionalInt = SkScalarToFractionalInt(fInvMatrix.getSkewY()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 251 | |
| 252 | fAlphaScale = SkAlpha255To256(paint.getAlpha()); |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 253 | |
reed@android.com | 7a99eb1 | 2009-07-16 01:13:14 +0000 | [diff] [blame] | 254 | fShaderProc32 = NULL; |
| 255 | fShaderProc16 = NULL; |
| 256 | fSampleProc32 = NULL; |
| 257 | fSampleProc16 = NULL; |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 258 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 259 | // recompute the triviality of the matrix here because we may have |
| 260 | // changed it! |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 261 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 262 | trivialMatrix = (fInvMatrix.getType() & ~SkMatrix::kTranslate_Mask) == 0; |
reed@android.com | 48534f9 | 2009-07-16 20:53:26 +0000 | [diff] [blame] | 263 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 264 | if (kHQ_BitmapFilter == fFilterQuality) { |
| 265 | // If this is still set, that means we wanted HQ sampling |
| 266 | // but couldn't do it as a preprocess. Let's try to install |
| 267 | // the scanline version of the HQ sampler. If that process fails, |
| 268 | // downgrade to bilerp. |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 269 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 270 | // NOTE: Might need to be careful here in the future when we want |
| 271 | // to have the platform proc have a shot at this; it's possible that |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 272 | // the chooseBitmapFilterProc will fail to install a shader but a |
| 273 | // platform-specific one might succeed, so it might be premature here |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 274 | // to fall back to bilerp. This needs thought. |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 275 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 276 | SkASSERT(fInvType > SkMatrix::kTranslate_Mask); |
| 277 | |
| 278 | fShaderProc32 = this->chooseBitmapFilterProc(); |
| 279 | if (!fShaderProc32) { |
| 280 | fFilterQuality = kBilerp_BitmapFilter; |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 281 | } |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 282 | } |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 283 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 284 | if (kBilerp_BitmapFilter == fFilterQuality) { |
| 285 | // Only try bilerp if the matrix is "interesting" and |
| 286 | // the image has a suitable size. |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 287 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 288 | if (fInvType < SkMatrix::kTranslate_Mask || |
| 289 | !valid_for_filtering(fBitmap->width() | fBitmap->height())) { |
| 290 | fFilterQuality = kNone_BitmapFilter; |
| 291 | } |
| 292 | } |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 293 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 294 | // At this point, we know exactly what kind of sampling the per-scanline |
| 295 | // shader will perform. |
| 296 | |
| 297 | fMatrixProc = this->chooseMatrixProc(trivialMatrix); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 298 | if (NULL == fMatrixProc) { |
| 299 | return false; |
| 300 | } |
| 301 | |
| 302 | /////////////////////////////////////////////////////////////////////// |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 303 | |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 304 | // No need to do this if we're doing HQ sampling; if filter quality is |
| 305 | // still set to HQ by the time we get here, then we must have installed |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 306 | // the shader proc above and can skip all this. |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 307 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 308 | if (fFilterQuality < kHQ_BitmapFilter) { |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 309 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 310 | int index = 0; |
| 311 | if (fAlphaScale < 256) { // note: this distinction is not used for D16 |
| 312 | index |= 1; |
reed@android.com | aa9152a | 2009-07-17 21:24:56 +0000 | [diff] [blame] | 313 | } |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 314 | if (fInvType <= (SkMatrix::kTranslate_Mask | SkMatrix::kScale_Mask)) { |
| 315 | index |= 2; |
| 316 | } |
| 317 | if (fFilterQuality != kNone_BitmapFilter) { |
| 318 | index |= 4; |
| 319 | } |
| 320 | // bits 3,4,5 encoding the source bitmap format |
| 321 | switch (fBitmap->config()) { |
| 322 | case SkBitmap::kARGB_8888_Config: |
| 323 | index |= 0; |
| 324 | break; |
| 325 | case SkBitmap::kRGB_565_Config: |
| 326 | index |= 8; |
| 327 | break; |
| 328 | case SkBitmap::kIndex8_Config: |
| 329 | index |= 16; |
| 330 | break; |
| 331 | case SkBitmap::kARGB_4444_Config: |
| 332 | index |= 24; |
| 333 | break; |
| 334 | case SkBitmap::kA8_Config: |
| 335 | index |= 32; |
| 336 | fPaintPMColor = SkPreMultiplyColor(paint.getColor()); |
| 337 | break; |
| 338 | default: |
| 339 | return false; |
| 340 | } |
reed@android.com | c9a1d4b | 2009-08-03 15:05:55 +0000 | [diff] [blame] | 341 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 342 | #if !SK_ARM_NEON_IS_ALWAYS |
| 343 | static const SampleProc32 gSkBitmapProcStateSample32[] = { |
| 344 | S32_opaque_D32_nofilter_DXDY, |
| 345 | S32_alpha_D32_nofilter_DXDY, |
| 346 | S32_opaque_D32_nofilter_DX, |
| 347 | S32_alpha_D32_nofilter_DX, |
| 348 | S32_opaque_D32_filter_DXDY, |
| 349 | S32_alpha_D32_filter_DXDY, |
| 350 | S32_opaque_D32_filter_DX, |
| 351 | S32_alpha_D32_filter_DX, |
skia.committer@gmail.com | 3e2345a | 2013-05-24 07:01:26 +0000 | [diff] [blame] | 352 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 353 | S16_opaque_D32_nofilter_DXDY, |
| 354 | S16_alpha_D32_nofilter_DXDY, |
| 355 | S16_opaque_D32_nofilter_DX, |
| 356 | S16_alpha_D32_nofilter_DX, |
| 357 | S16_opaque_D32_filter_DXDY, |
| 358 | S16_alpha_D32_filter_DXDY, |
| 359 | S16_opaque_D32_filter_DX, |
| 360 | S16_alpha_D32_filter_DX, |
| 361 | |
| 362 | SI8_opaque_D32_nofilter_DXDY, |
| 363 | SI8_alpha_D32_nofilter_DXDY, |
| 364 | SI8_opaque_D32_nofilter_DX, |
| 365 | SI8_alpha_D32_nofilter_DX, |
| 366 | SI8_opaque_D32_filter_DXDY, |
| 367 | SI8_alpha_D32_filter_DXDY, |
| 368 | SI8_opaque_D32_filter_DX, |
| 369 | SI8_alpha_D32_filter_DX, |
| 370 | |
| 371 | S4444_opaque_D32_nofilter_DXDY, |
| 372 | S4444_alpha_D32_nofilter_DXDY, |
| 373 | S4444_opaque_D32_nofilter_DX, |
| 374 | S4444_alpha_D32_nofilter_DX, |
| 375 | S4444_opaque_D32_filter_DXDY, |
| 376 | S4444_alpha_D32_filter_DXDY, |
| 377 | S4444_opaque_D32_filter_DX, |
| 378 | S4444_alpha_D32_filter_DX, |
| 379 | |
| 380 | // A8 treats alpha/opaque the same (equally efficient) |
| 381 | SA8_alpha_D32_nofilter_DXDY, |
| 382 | SA8_alpha_D32_nofilter_DXDY, |
| 383 | SA8_alpha_D32_nofilter_DX, |
| 384 | SA8_alpha_D32_nofilter_DX, |
| 385 | SA8_alpha_D32_filter_DXDY, |
| 386 | SA8_alpha_D32_filter_DXDY, |
| 387 | SA8_alpha_D32_filter_DX, |
| 388 | SA8_alpha_D32_filter_DX |
| 389 | }; |
| 390 | |
| 391 | static const SampleProc16 gSkBitmapProcStateSample16[] = { |
| 392 | S32_D16_nofilter_DXDY, |
| 393 | S32_D16_nofilter_DX, |
| 394 | S32_D16_filter_DXDY, |
| 395 | S32_D16_filter_DX, |
| 396 | |
| 397 | S16_D16_nofilter_DXDY, |
| 398 | S16_D16_nofilter_DX, |
| 399 | S16_D16_filter_DXDY, |
| 400 | S16_D16_filter_DX, |
| 401 | |
| 402 | SI8_D16_nofilter_DXDY, |
| 403 | SI8_D16_nofilter_DX, |
| 404 | SI8_D16_filter_DXDY, |
| 405 | SI8_D16_filter_DX, |
| 406 | |
| 407 | // Don't support 4444 -> 565 |
| 408 | NULL, NULL, NULL, NULL, |
| 409 | // Don't support A8 -> 565 |
| 410 | NULL, NULL, NULL, NULL |
| 411 | }; |
| 412 | #endif |
| 413 | |
| 414 | fSampleProc32 = SK_ARM_NEON_WRAP(gSkBitmapProcStateSample32)[index]; |
| 415 | index >>= 1; // shift away any opaque/alpha distinction |
| 416 | fSampleProc16 = SK_ARM_NEON_WRAP(gSkBitmapProcStateSample16)[index]; |
| 417 | |
| 418 | // our special-case shaderprocs |
| 419 | if (SK_ARM_NEON_WRAP(S16_D16_filter_DX) == fSampleProc16) { |
| 420 | if (clampClamp) { |
| 421 | fShaderProc16 = SK_ARM_NEON_WRAP(Clamp_S16_D16_filter_DX_shaderproc); |
| 422 | } else if (SkShader::kRepeat_TileMode == fTileModeX && |
| 423 | SkShader::kRepeat_TileMode == fTileModeY) { |
| 424 | fShaderProc16 = SK_ARM_NEON_WRAP(Repeat_S16_D16_filter_DX_shaderproc); |
| 425 | } |
| 426 | } else if (SK_ARM_NEON_WRAP(SI8_opaque_D32_filter_DX) == fSampleProc32 && clampClamp) { |
| 427 | fShaderProc32 = SK_ARM_NEON_WRAP(Clamp_SI8_opaque_D32_filter_DX_shaderproc); |
| 428 | } |
| 429 | |
| 430 | if (NULL == fShaderProc32) { |
| 431 | fShaderProc32 = this->chooseShaderProc32(); |
| 432 | } |
humper@google.com | b088947 | 2013-07-09 21:37:14 +0000 | [diff] [blame] | 433 | } |
| 434 | |
reed@android.com | c9a1d4b | 2009-08-03 15:05:55 +0000 | [diff] [blame] | 435 | // see if our platform has any accelerated overrides |
| 436 | this->platformProcs(); |
reed@google.com | 4c69a06 | 2013-05-23 20:11:56 +0000 | [diff] [blame] | 437 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 438 | return true; |
| 439 | } |
| 440 | |
reed@google.com | 9a4c746 | 2012-10-12 18:21:37 +0000 | [diff] [blame] | 441 | static void Clamp_S32_D32_nofilter_trans_shaderproc(const SkBitmapProcState& s, |
| 442 | int x, int y, |
| 443 | SkPMColor* SK_RESTRICT colors, |
| 444 | int count) { |
| 445 | SkASSERT(((s.fInvType & ~SkMatrix::kTranslate_Mask)) == 0); |
| 446 | SkASSERT(s.fInvKy == 0); |
| 447 | SkASSERT(count > 0 && colors != NULL); |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 448 | SkASSERT(SkBitmapProcState::kNone_BitmapFilter == s.fFilterQuality); |
skia.committer@gmail.com | 20c301b | 2012-10-17 02:01:13 +0000 | [diff] [blame] | 449 | |
reed@google.com | 9a4c746 | 2012-10-12 18:21:37 +0000 | [diff] [blame] | 450 | const int maxX = s.fBitmap->width() - 1; |
reed@google.com | f7698de | 2012-10-12 20:50:24 +0000 | [diff] [blame] | 451 | const int maxY = s.fBitmap->height() - 1; |
| 452 | int ix = s.fFilterOneX + x; |
| 453 | int iy = SkClampMax(s.fFilterOneY + y, maxY); |
| 454 | #ifdef SK_DEBUG |
reed@google.com | 9a4c746 | 2012-10-12 18:21:37 +0000 | [diff] [blame] | 455 | { |
| 456 | SkPoint pt; |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 457 | s.fInvProc(s.fInvMatrix, SkIntToScalar(x) + SK_ScalarHalf, |
reed@google.com | 9a4c746 | 2012-10-12 18:21:37 +0000 | [diff] [blame] | 458 | SkIntToScalar(y) + SK_ScalarHalf, &pt); |
reed@google.com | f7698de | 2012-10-12 20:50:24 +0000 | [diff] [blame] | 459 | int iy2 = SkClampMax(SkScalarFloorToInt(pt.fY), maxY); |
| 460 | int ix2 = SkScalarFloorToInt(pt.fX); |
skia.committer@gmail.com | 20c301b | 2012-10-17 02:01:13 +0000 | [diff] [blame] | 461 | |
reed@google.com | f7698de | 2012-10-12 20:50:24 +0000 | [diff] [blame] | 462 | SkASSERT(iy == iy2); |
| 463 | SkASSERT(ix == ix2); |
reed@google.com | 9a4c746 | 2012-10-12 18:21:37 +0000 | [diff] [blame] | 464 | } |
reed@google.com | f7698de | 2012-10-12 20:50:24 +0000 | [diff] [blame] | 465 | #endif |
| 466 | const SkPMColor* row = s.fBitmap->getAddr32(0, iy); |
skia.committer@gmail.com | 20c301b | 2012-10-17 02:01:13 +0000 | [diff] [blame] | 467 | |
reed@google.com | 9a4c746 | 2012-10-12 18:21:37 +0000 | [diff] [blame] | 468 | // clamp to the left |
| 469 | if (ix < 0) { |
| 470 | int n = SkMin32(-ix, count); |
| 471 | sk_memset32(colors, row[0], n); |
| 472 | count -= n; |
| 473 | if (0 == count) { |
| 474 | return; |
| 475 | } |
| 476 | colors += n; |
| 477 | SkASSERT(-ix == n); |
| 478 | ix = 0; |
| 479 | } |
| 480 | // copy the middle |
| 481 | if (ix <= maxX) { |
| 482 | int n = SkMin32(maxX - ix + 1, count); |
| 483 | memcpy(colors, row + ix, n * sizeof(SkPMColor)); |
| 484 | count -= n; |
| 485 | if (0 == count) { |
| 486 | return; |
| 487 | } |
| 488 | colors += n; |
| 489 | } |
| 490 | SkASSERT(count > 0); |
| 491 | // clamp to the right |
| 492 | sk_memset32(colors, row[maxX], count); |
| 493 | } |
| 494 | |
reed@google.com | a8d9930 | 2012-10-16 20:23:25 +0000 | [diff] [blame] | 495 | static inline int sk_int_mod(int x, int n) { |
| 496 | SkASSERT(n > 0); |
| 497 | if ((unsigned)x >= (unsigned)n) { |
| 498 | if (x < 0) { |
| 499 | x = n + ~(~x % n); |
| 500 | } else { |
| 501 | x = x % n; |
| 502 | } |
| 503 | } |
| 504 | return x; |
| 505 | } |
| 506 | |
robertphillips@google.com | 8b8bf4d | 2013-01-18 16:38:40 +0000 | [diff] [blame] | 507 | static inline int sk_int_mirror(int x, int n) { |
| 508 | x = sk_int_mod(x, 2 * n); |
| 509 | if (x >= n) { |
| 510 | x = n + ~(x - n); |
| 511 | } |
| 512 | return x; |
| 513 | } |
| 514 | |
reed@google.com | a8d9930 | 2012-10-16 20:23:25 +0000 | [diff] [blame] | 515 | static void Repeat_S32_D32_nofilter_trans_shaderproc(const SkBitmapProcState& s, |
| 516 | int x, int y, |
| 517 | SkPMColor* SK_RESTRICT colors, |
| 518 | int count) { |
| 519 | SkASSERT(((s.fInvType & ~SkMatrix::kTranslate_Mask)) == 0); |
| 520 | SkASSERT(s.fInvKy == 0); |
| 521 | SkASSERT(count > 0 && colors != NULL); |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 522 | SkASSERT(SkBitmapProcState::kNone_BitmapFilter == s.fFilterQuality); |
skia.committer@gmail.com | 20c301b | 2012-10-17 02:01:13 +0000 | [diff] [blame] | 523 | |
reed@google.com | a8d9930 | 2012-10-16 20:23:25 +0000 | [diff] [blame] | 524 | const int stopX = s.fBitmap->width(); |
| 525 | const int stopY = s.fBitmap->height(); |
| 526 | int ix = s.fFilterOneX + x; |
| 527 | int iy = sk_int_mod(s.fFilterOneY + y, stopY); |
| 528 | #ifdef SK_DEBUG |
| 529 | { |
| 530 | SkPoint pt; |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 531 | s.fInvProc(s.fInvMatrix, SkIntToScalar(x) + SK_ScalarHalf, |
reed@google.com | a8d9930 | 2012-10-16 20:23:25 +0000 | [diff] [blame] | 532 | SkIntToScalar(y) + SK_ScalarHalf, &pt); |
| 533 | int iy2 = sk_int_mod(SkScalarFloorToInt(pt.fY), stopY); |
| 534 | int ix2 = SkScalarFloorToInt(pt.fX); |
skia.committer@gmail.com | 20c301b | 2012-10-17 02:01:13 +0000 | [diff] [blame] | 535 | |
reed@google.com | a8d9930 | 2012-10-16 20:23:25 +0000 | [diff] [blame] | 536 | SkASSERT(iy == iy2); |
| 537 | SkASSERT(ix == ix2); |
| 538 | } |
| 539 | #endif |
| 540 | const SkPMColor* row = s.fBitmap->getAddr32(0, iy); |
| 541 | |
| 542 | ix = sk_int_mod(ix, stopX); |
| 543 | for (;;) { |
| 544 | int n = SkMin32(stopX - ix, count); |
| 545 | memcpy(colors, row + ix, n * sizeof(SkPMColor)); |
| 546 | count -= n; |
| 547 | if (0 == count) { |
| 548 | return; |
| 549 | } |
| 550 | colors += n; |
| 551 | ix = 0; |
| 552 | } |
| 553 | } |
| 554 | |
robertphillips@google.com | 8b8bf4d | 2013-01-18 16:38:40 +0000 | [diff] [blame] | 555 | static void S32_D32_constX_shaderproc(const SkBitmapProcState& s, |
| 556 | int x, int y, |
| 557 | SkPMColor* SK_RESTRICT colors, |
| 558 | int count) { |
| 559 | SkASSERT((s.fInvType & ~(SkMatrix::kTranslate_Mask | SkMatrix::kScale_Mask)) == 0); |
| 560 | SkASSERT(s.fInvKy == 0); |
| 561 | SkASSERT(count > 0 && colors != NULL); |
| 562 | SkASSERT(1 == s.fBitmap->width()); |
| 563 | |
scroggo@google.com | ad51132 | 2013-02-22 15:50:37 +0000 | [diff] [blame] | 564 | int iY0; |
| 565 | int iY1 SK_INIT_TO_AVOID_WARNING; |
| 566 | int iSubY SK_INIT_TO_AVOID_WARNING; |
robertphillips@google.com | 8b8bf4d | 2013-01-18 16:38:40 +0000 | [diff] [blame] | 567 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 568 | if (s.fFilterQuality != SkBitmapProcState::kNone_BitmapFilter) { |
robertphillips@google.com | 8b8bf4d | 2013-01-18 16:38:40 +0000 | [diff] [blame] | 569 | SkBitmapProcState::MatrixProc mproc = s.getMatrixProc(); |
| 570 | uint32_t xy[2]; |
| 571 | |
| 572 | mproc(s, xy, 1, x, y); |
| 573 | |
| 574 | iY0 = xy[0] >> 18; |
| 575 | iY1 = xy[0] & 0x3FFF; |
| 576 | iSubY = (xy[0] >> 14) & 0xF; |
| 577 | } else { |
| 578 | int yTemp; |
| 579 | |
| 580 | if (s.fInvType > SkMatrix::kTranslate_Mask) { |
| 581 | SkPoint pt; |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 582 | s.fInvProc(s.fInvMatrix, |
robertphillips@google.com | 8b8bf4d | 2013-01-18 16:38:40 +0000 | [diff] [blame] | 583 | SkIntToScalar(x) + SK_ScalarHalf, |
skia.committer@gmail.com | 36df7ed | 2013-01-19 07:05:38 +0000 | [diff] [blame] | 584 | SkIntToScalar(y) + SK_ScalarHalf, |
robertphillips@google.com | 8b8bf4d | 2013-01-18 16:38:40 +0000 | [diff] [blame] | 585 | &pt); |
robertphillips@google.com | 1e30523 | 2013-01-22 20:29:16 +0000 | [diff] [blame] | 586 | // 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] | 587 | // chooseProcs multiples the inverse matrix by the inverse of the |
robertphillips@google.com | 1e30523 | 2013-01-22 20:29:16 +0000 | [diff] [blame] | 588 | // bitmap's width and height. Since this method is going to do |
| 589 | // its own tiling and sampling we need to undo that here. |
robertphillips@google.com | d507775 | 2013-01-23 00:36:02 +0000 | [diff] [blame] | 590 | if (SkShader::kClamp_TileMode != s.fTileModeX || |
| 591 | SkShader::kClamp_TileMode != s.fTileModeY) { |
| 592 | yTemp = SkScalarFloorToInt(pt.fY * s.fBitmap->height()); |
| 593 | } else { |
| 594 | yTemp = SkScalarFloorToInt(pt.fY); |
| 595 | } |
robertphillips@google.com | 8b8bf4d | 2013-01-18 16:38:40 +0000 | [diff] [blame] | 596 | } else { |
| 597 | yTemp = s.fFilterOneY + y; |
| 598 | } |
| 599 | |
| 600 | const int stopY = s.fBitmap->height(); |
| 601 | switch (s.fTileModeY) { |
| 602 | case SkShader::kClamp_TileMode: |
| 603 | iY0 = SkClampMax(yTemp, stopY-1); |
| 604 | break; |
| 605 | case SkShader::kRepeat_TileMode: |
| 606 | iY0 = sk_int_mod(yTemp, stopY); |
| 607 | break; |
| 608 | case SkShader::kMirror_TileMode: |
| 609 | default: |
| 610 | iY0 = sk_int_mirror(yTemp, stopY); |
| 611 | break; |
| 612 | } |
| 613 | |
| 614 | #ifdef SK_DEBUG |
| 615 | { |
| 616 | SkPoint pt; |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 617 | s.fInvProc(s.fInvMatrix, |
robertphillips@google.com | 8b8bf4d | 2013-01-18 16:38:40 +0000 | [diff] [blame] | 618 | SkIntToScalar(x) + SK_ScalarHalf, |
skia.committer@gmail.com | 36df7ed | 2013-01-19 07:05:38 +0000 | [diff] [blame] | 619 | SkIntToScalar(y) + SK_ScalarHalf, |
robertphillips@google.com | 8b8bf4d | 2013-01-18 16:38:40 +0000 | [diff] [blame] | 620 | &pt); |
robertphillips@google.com | d507775 | 2013-01-23 00:36:02 +0000 | [diff] [blame] | 621 | if (s.fInvType > SkMatrix::kTranslate_Mask && |
| 622 | (SkShader::kClamp_TileMode != s.fTileModeX || |
| 623 | SkShader::kClamp_TileMode != s.fTileModeY)) { |
robertphillips@google.com | 1e30523 | 2013-01-22 20:29:16 +0000 | [diff] [blame] | 624 | pt.fY *= s.fBitmap->height(); |
| 625 | } |
robertphillips@google.com | 8b8bf4d | 2013-01-18 16:38:40 +0000 | [diff] [blame] | 626 | int iY2; |
| 627 | |
| 628 | switch (s.fTileModeY) { |
| 629 | case SkShader::kClamp_TileMode: |
| 630 | iY2 = SkClampMax(SkScalarFloorToInt(pt.fY), stopY-1); |
| 631 | break; |
| 632 | case SkShader::kRepeat_TileMode: |
| 633 | iY2 = sk_int_mod(SkScalarFloorToInt(pt.fY), stopY); |
| 634 | break; |
| 635 | case SkShader::kMirror_TileMode: |
| 636 | default: |
| 637 | iY2 = sk_int_mirror(SkScalarFloorToInt(pt.fY), stopY); |
| 638 | break; |
| 639 | } |
| 640 | |
| 641 | SkASSERT(iY0 == iY2); |
| 642 | } |
| 643 | #endif |
| 644 | } |
| 645 | |
| 646 | const SkPMColor* row0 = s.fBitmap->getAddr32(0, iY0); |
| 647 | SkPMColor color; |
| 648 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 649 | if (s.fFilterQuality != SkBitmapProcState::kNone_BitmapFilter) { |
robertphillips@google.com | 8b8bf4d | 2013-01-18 16:38:40 +0000 | [diff] [blame] | 650 | const SkPMColor* row1 = s.fBitmap->getAddr32(0, iY1); |
| 651 | |
| 652 | if (s.fAlphaScale < 256) { |
| 653 | Filter_32_alpha(iSubY, *row0, *row1, &color, s.fAlphaScale); |
| 654 | } else { |
| 655 | Filter_32_opaque(iSubY, *row0, *row1, &color); |
| 656 | } |
| 657 | } else { |
| 658 | if (s.fAlphaScale < 256) { |
| 659 | color = SkAlphaMulQ(*row0, s.fAlphaScale); |
| 660 | } else { |
| 661 | color = *row0; |
| 662 | } |
| 663 | } |
| 664 | |
| 665 | sk_memset32(colors, color, count); |
| 666 | } |
| 667 | |
reed@google.com | 6bb92bc | 2012-11-20 19:45:16 +0000 | [diff] [blame] | 668 | static void DoNothing_shaderproc(const SkBitmapProcState&, int x, int y, |
| 669 | SkPMColor* SK_RESTRICT colors, int count) { |
| 670 | // if we get called, the matrix is too tricky, so we just draw nothing |
| 671 | sk_memset32(colors, 0, count); |
| 672 | } |
| 673 | |
| 674 | bool SkBitmapProcState::setupForTranslate() { |
reed@google.com | a8d9930 | 2012-10-16 20:23:25 +0000 | [diff] [blame] | 675 | SkPoint pt; |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 676 | fInvProc(fInvMatrix, SK_ScalarHalf, SK_ScalarHalf, &pt); |
reed@google.com | 6bb92bc | 2012-11-20 19:45:16 +0000 | [diff] [blame] | 677 | |
| 678 | /* |
| 679 | * if the translate is larger than our ints, we can get random results, or |
| 680 | * worse, we might get 0x80000000, which wreaks havoc on us, since we can't |
| 681 | * negate it. |
| 682 | */ |
| 683 | const SkScalar too_big = SkIntToScalar(1 << 30); |
| 684 | if (SkScalarAbs(pt.fX) > too_big || SkScalarAbs(pt.fY) > too_big) { |
| 685 | return false; |
| 686 | } |
| 687 | |
reed@google.com | a8d9930 | 2012-10-16 20:23:25 +0000 | [diff] [blame] | 688 | // Since we know we're not filtered, we re-purpose these fields allow |
| 689 | // us to go from device -> src coordinates w/ just an integer add, |
| 690 | // rather than running through the inverse-matrix |
| 691 | fFilterOneX = SkScalarFloorToInt(pt.fX); |
| 692 | fFilterOneY = SkScalarFloorToInt(pt.fY); |
reed@google.com | 6bb92bc | 2012-11-20 19:45:16 +0000 | [diff] [blame] | 693 | return true; |
reed@google.com | a8d9930 | 2012-10-16 20:23:25 +0000 | [diff] [blame] | 694 | } |
| 695 | |
reed@google.com | 9a4c746 | 2012-10-12 18:21:37 +0000 | [diff] [blame] | 696 | SkBitmapProcState::ShaderProc32 SkBitmapProcState::chooseShaderProc32() { |
robertphillips@google.com | 8b8bf4d | 2013-01-18 16:38:40 +0000 | [diff] [blame] | 697 | |
| 698 | if (SkBitmap::kARGB_8888_Config != fBitmap->config()) { |
| 699 | return NULL; |
| 700 | } |
| 701 | |
| 702 | static const unsigned kMask = SkMatrix::kTranslate_Mask | SkMatrix::kScale_Mask; |
| 703 | |
| 704 | if (1 == fBitmap->width() && 0 == (fInvType & ~kMask)) { |
skia.committer@gmail.com | fa1bd5f | 2013-07-13 07:00:56 +0000 | [diff] [blame^] | 705 | if (kNone_BitmapFilter == fFilterQuality && |
| 706 | fInvType <= SkMatrix::kTranslate_Mask && |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 707 | !this->setupForTranslate()) { |
robertphillips@google.com | 8b8bf4d | 2013-01-18 16:38:40 +0000 | [diff] [blame] | 708 | return DoNothing_shaderproc; |
| 709 | } |
| 710 | return S32_D32_constX_shaderproc; |
| 711 | } |
| 712 | |
reed@google.com | 9a4c746 | 2012-10-12 18:21:37 +0000 | [diff] [blame] | 713 | if (fAlphaScale < 256) { |
| 714 | return NULL; |
| 715 | } |
| 716 | if (fInvType > SkMatrix::kTranslate_Mask) { |
| 717 | return NULL; |
| 718 | } |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 719 | if (fFilterQuality != kNone_BitmapFilter) { |
reed@google.com | 9a4c746 | 2012-10-12 18:21:37 +0000 | [diff] [blame] | 720 | return NULL; |
| 721 | } |
reed@google.com | 9a4c746 | 2012-10-12 18:21:37 +0000 | [diff] [blame] | 722 | |
reed@google.com | a8d9930 | 2012-10-16 20:23:25 +0000 | [diff] [blame] | 723 | SkShader::TileMode tx = (SkShader::TileMode)fTileModeX; |
| 724 | SkShader::TileMode ty = (SkShader::TileMode)fTileModeY; |
| 725 | |
| 726 | if (SkShader::kClamp_TileMode == tx && SkShader::kClamp_TileMode == ty) { |
reed@google.com | 6bb92bc | 2012-11-20 19:45:16 +0000 | [diff] [blame] | 727 | if (this->setupForTranslate()) { |
| 728 | return Clamp_S32_D32_nofilter_trans_shaderproc; |
| 729 | } |
| 730 | return DoNothing_shaderproc; |
reed@google.com | 9a4c746 | 2012-10-12 18:21:37 +0000 | [diff] [blame] | 731 | } |
reed@google.com | a8d9930 | 2012-10-16 20:23:25 +0000 | [diff] [blame] | 732 | if (SkShader::kRepeat_TileMode == tx && SkShader::kRepeat_TileMode == ty) { |
reed@google.com | 6bb92bc | 2012-11-20 19:45:16 +0000 | [diff] [blame] | 733 | if (this->setupForTranslate()) { |
| 734 | return Repeat_S32_D32_nofilter_trans_shaderproc; |
| 735 | } |
| 736 | return DoNothing_shaderproc; |
reed@google.com | a8d9930 | 2012-10-16 20:23:25 +0000 | [diff] [blame] | 737 | } |
reed@google.com | 9a4c746 | 2012-10-12 18:21:37 +0000 | [diff] [blame] | 738 | return NULL; |
| 739 | } |
| 740 | |
reed@android.com | 4c128c4 | 2009-08-14 13:54:37 +0000 | [diff] [blame] | 741 | /////////////////////////////////////////////////////////////////////////////// |
reed@google.com | 9fe287b | 2012-03-27 15:54:28 +0000 | [diff] [blame] | 742 | |
| 743 | #ifdef SK_DEBUG |
| 744 | |
| 745 | static void check_scale_nofilter(uint32_t bitmapXY[], int count, |
| 746 | unsigned mx, unsigned my) { |
| 747 | unsigned y = *bitmapXY++; |
| 748 | SkASSERT(y < my); |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 749 | |
reed@google.com | 9fe287b | 2012-03-27 15:54:28 +0000 | [diff] [blame] | 750 | const uint16_t* xptr = reinterpret_cast<const uint16_t*>(bitmapXY); |
| 751 | for (int i = 0; i < count; ++i) { |
| 752 | SkASSERT(xptr[i] < mx); |
| 753 | } |
| 754 | } |
| 755 | |
| 756 | static void check_scale_filter(uint32_t bitmapXY[], int count, |
| 757 | unsigned mx, unsigned my) { |
| 758 | uint32_t YY = *bitmapXY++; |
| 759 | unsigned y0 = YY >> 18; |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 760 | unsigned y1 = YY & 0x3FFF; |
reed@google.com | 9fe287b | 2012-03-27 15:54:28 +0000 | [diff] [blame] | 761 | SkASSERT(y0 < my); |
| 762 | SkASSERT(y1 < my); |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 763 | |
reed@google.com | 9fe287b | 2012-03-27 15:54:28 +0000 | [diff] [blame] | 764 | for (int i = 0; i < count; ++i) { |
| 765 | uint32_t XX = bitmapXY[i]; |
| 766 | unsigned x0 = XX >> 18; |
| 767 | unsigned x1 = XX & 0x3FFF; |
| 768 | SkASSERT(x0 < mx); |
| 769 | SkASSERT(x1 < mx); |
| 770 | } |
| 771 | } |
| 772 | |
| 773 | static void check_affine_nofilter(uint32_t bitmapXY[], int count, |
| 774 | unsigned mx, unsigned my) { |
| 775 | for (int i = 0; i < count; ++i) { |
| 776 | uint32_t XY = bitmapXY[i]; |
| 777 | unsigned x = XY & 0xFFFF; |
| 778 | unsigned y = XY >> 16; |
| 779 | SkASSERT(x < mx); |
| 780 | SkASSERT(y < my); |
| 781 | } |
| 782 | } |
| 783 | |
| 784 | static void check_affine_filter(uint32_t bitmapXY[], int count, |
| 785 | unsigned mx, unsigned my) { |
| 786 | for (int i = 0; i < count; ++i) { |
| 787 | uint32_t YY = *bitmapXY++; |
| 788 | unsigned y0 = YY >> 18; |
| 789 | unsigned y1 = YY & 0x3FFF; |
| 790 | SkASSERT(y0 < my); |
| 791 | SkASSERT(y1 < my); |
| 792 | |
| 793 | uint32_t XX = *bitmapXY++; |
| 794 | unsigned x0 = XX >> 18; |
| 795 | unsigned x1 = XX & 0x3FFF; |
| 796 | SkASSERT(x0 < mx); |
| 797 | SkASSERT(x1 < mx); |
| 798 | } |
| 799 | } |
| 800 | |
| 801 | void SkBitmapProcState::DebugMatrixProc(const SkBitmapProcState& state, |
| 802 | uint32_t bitmapXY[], int count, |
| 803 | int x, int y) { |
| 804 | SkASSERT(bitmapXY); |
| 805 | SkASSERT(count > 0); |
| 806 | |
| 807 | state.fMatrixProc(state, bitmapXY, count, x, y); |
| 808 | |
| 809 | void (*proc)(uint32_t bitmapXY[], int count, unsigned mx, unsigned my); |
| 810 | |
| 811 | // There are four formats possible: |
| 812 | // scale -vs- affine |
| 813 | // filter -vs- nofilter |
| 814 | if (state.fInvType <= (SkMatrix::kTranslate_Mask | SkMatrix::kScale_Mask)) { |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 815 | proc = state.fFilterQuality != kNone_BitmapFilter ? check_scale_filter : check_scale_nofilter; |
reed@google.com | 9fe287b | 2012-03-27 15:54:28 +0000 | [diff] [blame] | 816 | } else { |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 817 | proc = state.fFilterQuality != kNone_BitmapFilter ? check_affine_filter : check_affine_nofilter; |
reed@google.com | 9fe287b | 2012-03-27 15:54:28 +0000 | [diff] [blame] | 818 | } |
| 819 | proc(bitmapXY, count, state.fBitmap->width(), state.fBitmap->height()); |
| 820 | } |
| 821 | |
| 822 | SkBitmapProcState::MatrixProc SkBitmapProcState::getMatrixProc() const { |
| 823 | return DebugMatrixProc; |
| 824 | } |
| 825 | |
| 826 | #endif |
| 827 | |
| 828 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 4c128c4 | 2009-08-14 13:54:37 +0000 | [diff] [blame] | 829 | /* |
| 830 | The storage requirements for the different matrix procs are as follows, |
| 831 | 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] | 832 | |
reed@android.com | 4c128c4 | 2009-08-14 13:54:37 +0000 | [diff] [blame] | 833 | scale/translate nofilter Y(4bytes) + N * X |
| 834 | affine/perspective nofilter N * (X Y) |
| 835 | scale/translate filter Y Y + N * (X X) |
| 836 | affine/perspective filter N * (Y Y X X) |
| 837 | */ |
| 838 | int SkBitmapProcState::maxCountForBufferSize(size_t bufferSize) const { |
| 839 | int32_t size = static_cast<int32_t>(bufferSize); |
reed@android.com | 4c128c4 | 2009-08-14 13:54:37 +0000 | [diff] [blame] | 840 | |
| 841 | size &= ~3; // only care about 4-byte aligned chunks |
| 842 | if (fInvType <= (SkMatrix::kTranslate_Mask | SkMatrix::kScale_Mask)) { |
| 843 | size -= 4; // the shared Y (or YY) coordinate |
| 844 | if (size < 0) { |
| 845 | size = 0; |
| 846 | } |
reed@android.com | 258cb22 | 2010-04-14 13:36:33 +0000 | [diff] [blame] | 847 | size >>= 1; |
reed@android.com | 4c128c4 | 2009-08-14 13:54:37 +0000 | [diff] [blame] | 848 | } else { |
reed@android.com | 258cb22 | 2010-04-14 13:36:33 +0000 | [diff] [blame] | 849 | size >>= 2; |
reed@android.com | 4c128c4 | 2009-08-14 13:54:37 +0000 | [diff] [blame] | 850 | } |
| 851 | |
humper@google.com | d64d8a9 | 2013-07-12 21:14:33 +0000 | [diff] [blame] | 852 | if (fFilterQuality != kNone_BitmapFilter) { |
reed@android.com | 258cb22 | 2010-04-14 13:36:33 +0000 | [diff] [blame] | 853 | size >>= 1; |
| 854 | } |
| 855 | |
| 856 | return size; |
reed@android.com | 4c128c4 | 2009-08-14 13:54:37 +0000 | [diff] [blame] | 857 | } |