epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 1 | |
| 2 | /* |
| 3 | * Copyright 2006 The Android Open Source Project |
| 4 | * |
| 5 | * Use of this source code is governed by a BSD-style license that can be |
| 6 | * found in the LICENSE file. |
| 7 | */ |
| 8 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 9 | |
| 10 | #include "SkBlitter.h" |
| 11 | #include "SkAntiRun.h" |
| 12 | #include "SkColor.h" |
| 13 | #include "SkColorFilter.h" |
commit-bot@chromium.org | a5572e5 | 2014-03-07 03:24:41 +0000 | [diff] [blame] | 14 | #include "SkCoreBlitters.h" |
reed@google.com | 02f65f2 | 2012-08-06 21:20:05 +0000 | [diff] [blame] | 15 | #include "SkFilterShader.h" |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 16 | #include "SkReadBuffer.h" |
| 17 | #include "SkWriteBuffer.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 18 | #include "SkMask.h" |
| 19 | #include "SkMaskFilter.h" |
commit-bot@chromium.org | a5572e5 | 2014-03-07 03:24:41 +0000 | [diff] [blame] | 20 | #include "SkString.h" |
reed@google.com | 4588490 | 2012-05-11 14:38:51 +0000 | [diff] [blame] | 21 | #include "SkTLazy.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 22 | #include "SkUtils.h" |
| 23 | #include "SkXfermode.h" |
| 24 | |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 25 | SkBlitter::~SkBlitter() {} |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 26 | |
reed@google.com | ea03360 | 2012-12-14 13:13:55 +0000 | [diff] [blame] | 27 | bool SkBlitter::isNullBlitter() const { return false; } |
| 28 | |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 29 | bool SkBlitter::resetShaderContext(const SkBitmap& device, const SkPaint& paint, |
| 30 | const SkMatrix& matrix) { |
| 31 | return true; |
| 32 | } |
| 33 | |
| 34 | SkShader::Context* SkBlitter::getShaderContext() const { |
| 35 | return NULL; |
| 36 | } |
| 37 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 38 | const SkBitmap* SkBlitter::justAnOpaqueColor(uint32_t* value) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 39 | return NULL; |
| 40 | } |
| 41 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 42 | void SkBlitter::blitH(int x, int y, int width) { |
tomhudson@google.com | 0c00f21 | 2011-12-28 14:59:50 +0000 | [diff] [blame] | 43 | SkDEBUGFAIL("unimplemented"); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 44 | } |
| 45 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 46 | void SkBlitter::blitAntiH(int x, int y, const SkAlpha antialias[], |
| 47 | const int16_t runs[]) { |
tomhudson@google.com | 0c00f21 | 2011-12-28 14:59:50 +0000 | [diff] [blame] | 48 | SkDEBUGFAIL("unimplemented"); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 49 | } |
| 50 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 51 | void SkBlitter::blitV(int x, int y, int height, SkAlpha alpha) { |
| 52 | if (alpha == 255) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 53 | this->blitRect(x, y, 1, height); |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 54 | } else { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 55 | int16_t runs[2]; |
| 56 | runs[0] = 1; |
| 57 | runs[1] = 0; |
| 58 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 59 | while (--height >= 0) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 60 | this->blitAntiH(x, y++, &alpha, runs); |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 61 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 62 | } |
| 63 | } |
| 64 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 65 | void SkBlitter::blitRect(int x, int y, int width, int height) { |
tomhudson@google.com | a31ac73 | 2011-12-29 16:09:31 +0000 | [diff] [blame] | 66 | SkASSERT(width > 0); |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 67 | while (--height >= 0) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 68 | this->blitH(x, y++, width); |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 69 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 70 | } |
| 71 | |
tomhudson@google.com | 49eac19 | 2011-12-27 13:59:20 +0000 | [diff] [blame] | 72 | /// Default implementation doesn't check for any easy optimizations |
| 73 | /// such as alpha == 0 or 255; also uses blitV(), which some subclasses |
| 74 | /// may not support. |
| 75 | void SkBlitter::blitAntiRect(int x, int y, int width, int height, |
| 76 | SkAlpha leftAlpha, SkAlpha rightAlpha) { |
tomhudson@google.com | 4714359 | 2011-12-28 17:58:07 +0000 | [diff] [blame] | 77 | this->blitV(x++, y, height, leftAlpha); |
tomhudson@google.com | a31ac73 | 2011-12-29 16:09:31 +0000 | [diff] [blame] | 78 | if (width > 0) { |
tomhudson@google.com | 4714359 | 2011-12-28 17:58:07 +0000 | [diff] [blame] | 79 | this->blitRect(x, y, width, height); |
| 80 | x += width; |
| 81 | } |
| 82 | this->blitV(x, y, height, rightAlpha); |
tomhudson@google.com | 49eac19 | 2011-12-27 13:59:20 +0000 | [diff] [blame] | 83 | } |
| 84 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 85 | ////////////////////////////////////////////////////////////////////////////// |
| 86 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 87 | static inline void bits_to_runs(SkBlitter* blitter, int x, int y, |
| 88 | const uint8_t bits[], |
| 89 | U8CPU left_mask, int rowBytes, |
| 90 | U8CPU right_mask) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 91 | int inFill = 0; |
| 92 | int pos = 0; |
| 93 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 94 | while (--rowBytes >= 0) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 95 | unsigned b = *bits++ & left_mask; |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 96 | if (rowBytes == 0) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 97 | b &= right_mask; |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 98 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 99 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 100 | for (unsigned test = 0x80; test != 0; test >>= 1) { |
| 101 | if (b & test) { |
| 102 | if (!inFill) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 103 | pos = x; |
| 104 | inFill = true; |
| 105 | } |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 106 | } else { |
| 107 | if (inFill) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 108 | blitter->blitH(pos, y, x - pos); |
| 109 | inFill = false; |
| 110 | } |
| 111 | } |
| 112 | x += 1; |
| 113 | } |
| 114 | left_mask = 0xFF; |
| 115 | } |
| 116 | |
| 117 | // final cleanup |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 118 | if (inFill) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 119 | blitter->blitH(pos, y, x - pos); |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 120 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 121 | } |
| 122 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 123 | void SkBlitter::blitMask(const SkMask& mask, const SkIRect& clip) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 124 | SkASSERT(mask.fBounds.contains(clip)); |
| 125 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 126 | if (mask.fFormat == SkMask::kBW_Format) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 127 | int cx = clip.fLeft; |
| 128 | int cy = clip.fTop; |
| 129 | int maskLeft = mask.fBounds.fLeft; |
| 130 | int mask_rowBytes = mask.fRowBytes; |
| 131 | int height = clip.height(); |
| 132 | |
| 133 | const uint8_t* bits = mask.getAddr1(cx, cy); |
| 134 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 135 | if (cx == maskLeft && clip.fRight == mask.fBounds.fRight) { |
| 136 | while (--height >= 0) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 137 | bits_to_runs(this, cx, cy, bits, 0xFF, mask_rowBytes, 0xFF); |
| 138 | bits += mask_rowBytes; |
| 139 | cy += 1; |
| 140 | } |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 141 | } else { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 142 | int left_edge = cx - maskLeft; |
| 143 | SkASSERT(left_edge >= 0); |
| 144 | int rite_edge = clip.fRight - maskLeft; |
| 145 | SkASSERT(rite_edge > left_edge); |
| 146 | |
| 147 | int left_mask = 0xFF >> (left_edge & 7); |
| 148 | int rite_mask = 0xFF << (8 - (rite_edge & 7)); |
| 149 | int full_runs = (rite_edge >> 3) - ((left_edge + 7) >> 3); |
| 150 | |
reed@google.com | a89c77b | 2011-12-01 21:47:26 +0000 | [diff] [blame] | 151 | // check for empty right mask, so we don't read off the end (or go slower than we need to) |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 152 | if (rite_mask == 0) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 153 | SkASSERT(full_runs >= 0); |
| 154 | full_runs -= 1; |
| 155 | rite_mask = 0xFF; |
| 156 | } |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 157 | if (left_mask == 0xFF) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 158 | full_runs -= 1; |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 159 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 160 | |
reed@google.com | a89c77b | 2011-12-01 21:47:26 +0000 | [diff] [blame] | 161 | // back up manually so we can keep in sync with our byte-aligned src |
| 162 | // have cx reflect our actual starting x-coord |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 163 | cx -= left_edge & 7; |
| 164 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 165 | if (full_runs < 0) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 166 | SkASSERT((left_mask & rite_mask) != 0); |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 167 | while (--height >= 0) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 168 | bits_to_runs(this, cx, cy, bits, left_mask, 1, rite_mask); |
| 169 | bits += mask_rowBytes; |
| 170 | cy += 1; |
| 171 | } |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 172 | } else { |
| 173 | while (--height >= 0) { |
reed@google.com | a89c77b | 2011-12-01 21:47:26 +0000 | [diff] [blame] | 174 | bits_to_runs(this, cx, cy, bits, left_mask, full_runs + 2, rite_mask); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 175 | bits += mask_rowBytes; |
| 176 | cy += 1; |
| 177 | } |
| 178 | } |
| 179 | } |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 180 | } else { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 181 | int width = clip.width(); |
| 182 | SkAutoSTMalloc<64, int16_t> runStorage(width + 1); |
| 183 | int16_t* runs = runStorage.get(); |
reed@google.com | 7989186 | 2011-10-18 15:44:57 +0000 | [diff] [blame] | 184 | const uint8_t* aa = mask.getAddr8(clip.fLeft, clip.fTop); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 185 | |
| 186 | sk_memset16((uint16_t*)runs, 1, width); |
| 187 | runs[width] = 0; |
| 188 | |
| 189 | int height = clip.height(); |
| 190 | int y = clip.fTop; |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 191 | while (--height >= 0) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 192 | this->blitAntiH(clip.fLeft, y, aa, runs); |
| 193 | aa += mask.fRowBytes; |
| 194 | y += 1; |
| 195 | } |
| 196 | } |
| 197 | } |
| 198 | |
| 199 | /////////////////////// these guys are not virtual, just a helpers |
| 200 | |
| 201 | void SkBlitter::blitMaskRegion(const SkMask& mask, const SkRegion& clip) { |
| 202 | if (clip.quickReject(mask.fBounds)) { |
| 203 | return; |
| 204 | } |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 205 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 206 | SkRegion::Cliperator clipper(clip, mask.fBounds); |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 207 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 208 | while (!clipper.done()) { |
| 209 | const SkIRect& cr = clipper.rect(); |
| 210 | this->blitMask(mask, cr); |
| 211 | clipper.next(); |
| 212 | } |
| 213 | } |
| 214 | |
| 215 | void SkBlitter::blitRectRegion(const SkIRect& rect, const SkRegion& clip) { |
| 216 | SkRegion::Cliperator clipper(clip, rect); |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 217 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 218 | while (!clipper.done()) { |
| 219 | const SkIRect& cr = clipper.rect(); |
| 220 | this->blitRect(cr.fLeft, cr.fTop, cr.width(), cr.height()); |
| 221 | clipper.next(); |
| 222 | } |
| 223 | } |
| 224 | |
| 225 | void SkBlitter::blitRegion(const SkRegion& clip) { |
| 226 | SkRegion::Iterator iter(clip); |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 227 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 228 | while (!iter.done()) { |
| 229 | const SkIRect& cr = iter.rect(); |
| 230 | this->blitRect(cr.fLeft, cr.fTop, cr.width(), cr.height()); |
| 231 | iter.next(); |
| 232 | } |
| 233 | } |
| 234 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 235 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 236 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 237 | void SkNullBlitter::blitH(int x, int y, int width) {} |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 238 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 239 | void SkNullBlitter::blitAntiH(int x, int y, const SkAlpha antialias[], |
| 240 | const int16_t runs[]) {} |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 241 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 242 | void SkNullBlitter::blitV(int x, int y, int height, SkAlpha alpha) {} |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 243 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 244 | void SkNullBlitter::blitRect(int x, int y, int width, int height) {} |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 245 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 246 | void SkNullBlitter::blitMask(const SkMask& mask, const SkIRect& clip) {} |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 247 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 248 | const SkBitmap* SkNullBlitter::justAnOpaqueColor(uint32_t* value) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 249 | return NULL; |
| 250 | } |
| 251 | |
reed@google.com | ea03360 | 2012-12-14 13:13:55 +0000 | [diff] [blame] | 252 | bool SkNullBlitter::isNullBlitter() const { return true; } |
| 253 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 254 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 255 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 256 | static int compute_anti_width(const int16_t runs[]) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 257 | int width = 0; |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 258 | |
| 259 | for (;;) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 260 | int count = runs[0]; |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 261 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 262 | SkASSERT(count >= 0); |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 263 | if (count == 0) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 264 | break; |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 265 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 266 | width += count; |
| 267 | runs += count; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 268 | } |
| 269 | return width; |
| 270 | } |
| 271 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 272 | static inline bool y_in_rect(int y, const SkIRect& rect) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 273 | return (unsigned)(y - rect.fTop) < (unsigned)rect.height(); |
| 274 | } |
| 275 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 276 | static inline bool x_in_rect(int x, const SkIRect& rect) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 277 | return (unsigned)(x - rect.fLeft) < (unsigned)rect.width(); |
| 278 | } |
| 279 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 280 | void SkRectClipBlitter::blitH(int left, int y, int width) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 281 | SkASSERT(width > 0); |
| 282 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 283 | if (!y_in_rect(y, fClipRect)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 284 | return; |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 285 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 286 | |
| 287 | int right = left + width; |
| 288 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 289 | if (left < fClipRect.fLeft) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 290 | left = fClipRect.fLeft; |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 291 | } |
| 292 | if (right > fClipRect.fRight) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 293 | right = fClipRect.fRight; |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 294 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 295 | |
| 296 | width = right - left; |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 297 | if (width > 0) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 298 | fBlitter->blitH(left, y, width); |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 299 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 300 | } |
| 301 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 302 | void SkRectClipBlitter::blitAntiH(int left, int y, const SkAlpha aa[], |
| 303 | const int16_t runs[]) { |
| 304 | if (!y_in_rect(y, fClipRect) || left >= fClipRect.fRight) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 305 | return; |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 306 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 307 | |
| 308 | int x0 = left; |
| 309 | int x1 = left + compute_anti_width(runs); |
| 310 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 311 | if (x1 <= fClipRect.fLeft) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 312 | return; |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 313 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 314 | |
| 315 | SkASSERT(x0 < x1); |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 316 | if (x0 < fClipRect.fLeft) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 317 | int dx = fClipRect.fLeft - x0; |
| 318 | SkAlphaRuns::BreakAt((int16_t*)runs, (uint8_t*)aa, dx); |
| 319 | runs += dx; |
| 320 | aa += dx; |
| 321 | x0 = fClipRect.fLeft; |
| 322 | } |
| 323 | |
| 324 | SkASSERT(x0 < x1 && runs[x1 - x0] == 0); |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 325 | if (x1 > fClipRect.fRight) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 326 | x1 = fClipRect.fRight; |
| 327 | SkAlphaRuns::BreakAt((int16_t*)runs, (uint8_t*)aa, x1 - x0); |
| 328 | ((int16_t*)runs)[x1 - x0] = 0; |
| 329 | } |
| 330 | |
| 331 | SkASSERT(x0 < x1 && runs[x1 - x0] == 0); |
| 332 | SkASSERT(compute_anti_width(runs) == x1 - x0); |
| 333 | |
| 334 | fBlitter->blitAntiH(x0, y, aa, runs); |
| 335 | } |
| 336 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 337 | void SkRectClipBlitter::blitV(int x, int y, int height, SkAlpha alpha) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 338 | SkASSERT(height > 0); |
| 339 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 340 | if (!x_in_rect(x, fClipRect)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 341 | return; |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 342 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 343 | |
| 344 | int y0 = y; |
| 345 | int y1 = y + height; |
| 346 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 347 | if (y0 < fClipRect.fTop) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 348 | y0 = fClipRect.fTop; |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 349 | } |
| 350 | if (y1 > fClipRect.fBottom) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 351 | y1 = fClipRect.fBottom; |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 352 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 353 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 354 | if (y0 < y1) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 355 | fBlitter->blitV(x, y0, y1 - y0, alpha); |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 356 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 357 | } |
| 358 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 359 | void SkRectClipBlitter::blitRect(int left, int y, int width, int height) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 360 | SkIRect r; |
| 361 | |
| 362 | r.set(left, y, left + width, y + height); |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 363 | if (r.intersect(fClipRect)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 364 | fBlitter->blitRect(r.fLeft, r.fTop, r.width(), r.height()); |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 365 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 366 | } |
| 367 | |
tomhudson@google.com | 49eac19 | 2011-12-27 13:59:20 +0000 | [diff] [blame] | 368 | void SkRectClipBlitter::blitAntiRect(int left, int y, int width, int height, |
| 369 | SkAlpha leftAlpha, SkAlpha rightAlpha) { |
| 370 | SkIRect r; |
| 371 | |
| 372 | // The *true* width of the rectangle blitted is width+2: |
| 373 | r.set(left, y, left + width + 2, y + height); |
| 374 | if (r.intersect(fClipRect)) { |
| 375 | if (r.fLeft != left) { |
| 376 | SkASSERT(r.fLeft > left); |
| 377 | leftAlpha = 255; |
| 378 | } |
| 379 | if (r.fRight != left + width + 2) { |
| 380 | SkASSERT(r.fRight < left + width + 2); |
| 381 | rightAlpha = 255; |
| 382 | } |
| 383 | if (255 == leftAlpha && 255 == rightAlpha) { |
| 384 | fBlitter->blitRect(r.fLeft, r.fTop, r.width(), r.height()); |
| 385 | } else if (1 == r.width()) { |
| 386 | if (r.fLeft == left) { |
| 387 | fBlitter->blitV(r.fLeft, r.fTop, r.height(), leftAlpha); |
| 388 | } else { |
| 389 | SkASSERT(r.fLeft == left + width + 1); |
| 390 | fBlitter->blitV(r.fLeft, r.fTop, r.height(), rightAlpha); |
| 391 | } |
| 392 | } else { |
| 393 | fBlitter->blitAntiRect(r.fLeft, r.fTop, r.width() - 2, r.height(), |
| 394 | leftAlpha, rightAlpha); |
| 395 | } |
| 396 | } |
| 397 | } |
| 398 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 399 | void SkRectClipBlitter::blitMask(const SkMask& mask, const SkIRect& clip) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 400 | SkASSERT(mask.fBounds.contains(clip)); |
| 401 | |
| 402 | SkIRect r = clip; |
| 403 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 404 | if (r.intersect(fClipRect)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 405 | fBlitter->blitMask(mask, r); |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 406 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 407 | } |
| 408 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 409 | const SkBitmap* SkRectClipBlitter::justAnOpaqueColor(uint32_t* value) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 410 | return fBlitter->justAnOpaqueColor(value); |
| 411 | } |
| 412 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 413 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 414 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 415 | void SkRgnClipBlitter::blitH(int x, int y, int width) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 416 | SkRegion::Spanerator span(*fRgn, y, x, x + width); |
| 417 | int left, right; |
| 418 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 419 | while (span.next(&left, &right)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 420 | SkASSERT(left < right); |
| 421 | fBlitter->blitH(left, y, right - left); |
| 422 | } |
| 423 | } |
| 424 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 425 | void SkRgnClipBlitter::blitAntiH(int x, int y, const SkAlpha aa[], |
| 426 | const int16_t runs[]) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 427 | int width = compute_anti_width(runs); |
| 428 | SkRegion::Spanerator span(*fRgn, y, x, x + width); |
| 429 | int left, right; |
| 430 | SkDEBUGCODE(const SkIRect& bounds = fRgn->getBounds();) |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 431 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 432 | int prevRite = x; |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 433 | while (span.next(&left, &right)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 434 | SkASSERT(x <= left); |
| 435 | SkASSERT(left < right); |
| 436 | SkASSERT(left >= bounds.fLeft && right <= bounds.fRight); |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 437 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 438 | SkAlphaRuns::Break((int16_t*)runs, (uint8_t*)aa, left - x, right - left); |
| 439 | |
| 440 | // now zero before left |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 441 | if (left > prevRite) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 442 | int index = prevRite - x; |
| 443 | ((uint8_t*)aa)[index] = 0; // skip runs after right |
| 444 | ((int16_t*)runs)[index] = SkToS16(left - prevRite); |
| 445 | } |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 446 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 447 | prevRite = right; |
| 448 | } |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 449 | |
| 450 | if (prevRite > x) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 451 | ((int16_t*)runs)[prevRite - x] = 0; |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 452 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 453 | if (x < 0) { |
| 454 | int skip = runs[0]; |
| 455 | SkASSERT(skip >= -x); |
| 456 | aa += skip; |
| 457 | runs += skip; |
| 458 | x += skip; |
| 459 | } |
| 460 | fBlitter->blitAntiH(x, y, aa, runs); |
| 461 | } |
| 462 | } |
| 463 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 464 | void SkRgnClipBlitter::blitV(int x, int y, int height, SkAlpha alpha) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 465 | SkIRect bounds; |
| 466 | bounds.set(x, y, x + 1, y + height); |
| 467 | |
| 468 | SkRegion::Cliperator iter(*fRgn, bounds); |
| 469 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 470 | while (!iter.done()) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 471 | const SkIRect& r = iter.rect(); |
| 472 | SkASSERT(bounds.contains(r)); |
| 473 | |
| 474 | fBlitter->blitV(x, r.fTop, r.height(), alpha); |
| 475 | iter.next(); |
| 476 | } |
| 477 | } |
| 478 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 479 | void SkRgnClipBlitter::blitRect(int x, int y, int width, int height) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 480 | SkIRect bounds; |
| 481 | bounds.set(x, y, x + width, y + height); |
| 482 | |
| 483 | SkRegion::Cliperator iter(*fRgn, bounds); |
| 484 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 485 | while (!iter.done()) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 486 | const SkIRect& r = iter.rect(); |
| 487 | SkASSERT(bounds.contains(r)); |
| 488 | |
| 489 | fBlitter->blitRect(r.fLeft, r.fTop, r.width(), r.height()); |
| 490 | iter.next(); |
| 491 | } |
| 492 | } |
| 493 | |
tomhudson@google.com | 49eac19 | 2011-12-27 13:59:20 +0000 | [diff] [blame] | 494 | void SkRgnClipBlitter::blitAntiRect(int x, int y, int width, int height, |
| 495 | SkAlpha leftAlpha, SkAlpha rightAlpha) { |
| 496 | // The *true* width of the rectangle to blit is width + 2 |
| 497 | SkIRect bounds; |
| 498 | bounds.set(x, y, x + width + 2, y + height); |
| 499 | |
| 500 | SkRegion::Cliperator iter(*fRgn, bounds); |
| 501 | |
| 502 | while (!iter.done()) { |
| 503 | const SkIRect& r = iter.rect(); |
| 504 | SkASSERT(bounds.contains(r)); |
| 505 | SkASSERT(r.fLeft >= x); |
tomhudson@google.com | 31bab39 | 2012-01-03 20:12:42 +0000 | [diff] [blame] | 506 | SkASSERT(r.fRight <= x + width + 2); |
tomhudson@google.com | 49eac19 | 2011-12-27 13:59:20 +0000 | [diff] [blame] | 507 | |
| 508 | SkAlpha effectiveLeftAlpha = (r.fLeft == x) ? leftAlpha : 255; |
| 509 | SkAlpha effectiveRightAlpha = (r.fRight == x + width + 2) ? |
| 510 | rightAlpha : 255; |
| 511 | |
| 512 | if (255 == effectiveLeftAlpha && 255 == effectiveRightAlpha) { |
| 513 | fBlitter->blitRect(r.fLeft, r.fTop, r.width(), r.height()); |
| 514 | } else if (1 == r.width()) { |
| 515 | if (r.fLeft == x) { |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 516 | fBlitter->blitV(r.fLeft, r.fTop, r.height(), |
tomhudson@google.com | 49eac19 | 2011-12-27 13:59:20 +0000 | [diff] [blame] | 517 | effectiveLeftAlpha); |
| 518 | } else { |
| 519 | SkASSERT(r.fLeft == x + width + 1); |
| 520 | fBlitter->blitV(r.fLeft, r.fTop, r.height(), |
| 521 | effectiveRightAlpha); |
| 522 | } |
| 523 | } else { |
| 524 | fBlitter->blitAntiRect(r.fLeft, r.fTop, r.width() - 2, r.height(), |
| 525 | effectiveLeftAlpha, effectiveRightAlpha); |
| 526 | } |
| 527 | iter.next(); |
| 528 | } |
| 529 | } |
| 530 | |
| 531 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 532 | void SkRgnClipBlitter::blitMask(const SkMask& mask, const SkIRect& clip) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 533 | SkASSERT(mask.fBounds.contains(clip)); |
| 534 | |
| 535 | SkRegion::Cliperator iter(*fRgn, clip); |
| 536 | const SkIRect& r = iter.rect(); |
| 537 | SkBlitter* blitter = fBlitter; |
| 538 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 539 | while (!iter.done()) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 540 | blitter->blitMask(mask, r); |
| 541 | iter.next(); |
| 542 | } |
| 543 | } |
| 544 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 545 | const SkBitmap* SkRgnClipBlitter::justAnOpaqueColor(uint32_t* value) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 546 | return fBlitter->justAnOpaqueColor(value); |
| 547 | } |
| 548 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 549 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 550 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 551 | SkBlitter* SkBlitterClipper::apply(SkBlitter* blitter, const SkRegion* clip, |
| 552 | const SkIRect* ir) { |
| 553 | if (clip) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 554 | const SkIRect& clipR = clip->getBounds(); |
| 555 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 556 | if (clip->isEmpty() || (ir && !SkIRect::Intersects(clipR, *ir))) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 557 | blitter = &fNullBlitter; |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 558 | } else if (clip->isRect()) { |
| 559 | if (ir == NULL || !clipR.contains(*ir)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 560 | fRectBlitter.init(blitter, clipR); |
| 561 | blitter = &fRectBlitter; |
| 562 | } |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 563 | } else { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 564 | fRgnBlitter.init(blitter, clip); |
| 565 | blitter = &fRgnBlitter; |
| 566 | } |
| 567 | } |
| 568 | return blitter; |
| 569 | } |
| 570 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 571 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 572 | |
| 573 | #include "SkColorShader.h" |
| 574 | #include "SkColorPriv.h" |
| 575 | |
| 576 | class Sk3DShader : public SkShader { |
| 577 | public: |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 578 | Sk3DShader(SkShader* proxy) : fProxy(proxy) { |
| 579 | SkSafeRef(proxy); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 580 | } |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 581 | |
| 582 | virtual ~Sk3DShader() { |
| 583 | SkSafeUnref(fProxy); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 584 | } |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 585 | |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 586 | virtual size_t contextSize() const SK_OVERRIDE { |
| 587 | size_t size = sizeof(Sk3DShaderContext); |
| 588 | if (fProxy) { |
| 589 | size += fProxy->contextSize(); |
| 590 | } |
| 591 | return size; |
| 592 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 593 | |
commit-bot@chromium.org | e901b6d | 2014-05-01 19:31:31 +0000 | [diff] [blame^] | 594 | virtual bool validContext(const ContextRec& rec, SkMatrix* totalInverse) const SK_OVERRIDE { |
| 595 | if (!this->INHERITED::validContext(rec, totalInverse)) { |
reed@google.com | a641f3f | 2012-12-13 22:16:30 +0000 | [diff] [blame] | 596 | return false; |
| 597 | } |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 598 | if (fProxy) { |
commit-bot@chromium.org | e901b6d | 2014-05-01 19:31:31 +0000 | [diff] [blame^] | 599 | return fProxy->validContext(rec); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 600 | } |
reed@google.com | a641f3f | 2012-12-13 22:16:30 +0000 | [diff] [blame] | 601 | return true; |
| 602 | } |
skia.committer@gmail.com | 61b05dc | 2012-12-14 02:02:06 +0000 | [diff] [blame] | 603 | |
commit-bot@chromium.org | e901b6d | 2014-05-01 19:31:31 +0000 | [diff] [blame^] | 604 | virtual SkShader::Context* createContext(const ContextRec& rec, void* storage) const SK_OVERRIDE |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 605 | { |
commit-bot@chromium.org | e901b6d | 2014-05-01 19:31:31 +0000 | [diff] [blame^] | 606 | if (!this->validContext(rec, NULL)) { |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 607 | return NULL; |
commit-bot@chromium.org | bc2f1dc | 2014-04-23 09:11:58 +0000 | [diff] [blame] | 608 | } |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 609 | |
| 610 | SkShader::Context* proxyContext; |
| 611 | if (fProxy) { |
| 612 | char* proxyContextStorage = (char*) storage + sizeof(Sk3DShaderContext); |
commit-bot@chromium.org | e901b6d | 2014-05-01 19:31:31 +0000 | [diff] [blame^] | 613 | proxyContext = fProxy->createContext(rec, proxyContextStorage); |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 614 | SkASSERT(proxyContext); |
| 615 | } else { |
| 616 | proxyContext = NULL; |
| 617 | } |
commit-bot@chromium.org | e901b6d | 2014-05-01 19:31:31 +0000 | [diff] [blame^] | 618 | return SkNEW_PLACEMENT_ARGS(storage, Sk3DShaderContext, (*this, rec, proxyContext)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 619 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 620 | |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 621 | class Sk3DShaderContext : public SkShader::Context { |
| 622 | public: |
| 623 | // Calls proxyContext's destructor but will NOT free its memory. |
commit-bot@chromium.org | e901b6d | 2014-05-01 19:31:31 +0000 | [diff] [blame^] | 624 | Sk3DShaderContext(const Sk3DShader& shader, const ContextRec& rec, |
| 625 | SkShader::Context* proxyContext) |
| 626 | : INHERITED(shader, rec) |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 627 | , fMask(NULL) |
| 628 | , fProxyContext(proxyContext) |
| 629 | { |
| 630 | if (!fProxyContext) { |
commit-bot@chromium.org | e901b6d | 2014-05-01 19:31:31 +0000 | [diff] [blame^] | 631 | fPMColor = SkPreMultiplyColor(rec.fPaint->getColor()); |
commit-bot@chromium.org | bc2f1dc | 2014-04-23 09:11:58 +0000 | [diff] [blame] | 632 | } |
| 633 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 634 | |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 635 | virtual ~Sk3DShaderContext() { |
| 636 | if (fProxyContext) { |
| 637 | fProxyContext->~Context(); |
| 638 | } |
| 639 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 640 | |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 641 | void setMask(const SkMask* mask) { fMask = mask; } |
commit-bot@chromium.org | 001f4ed | 2014-04-16 10:16:39 +0000 | [diff] [blame] | 642 | |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 643 | virtual void shadeSpan(int x, int y, SkPMColor span[], int count) SK_OVERRIDE { |
| 644 | if (fProxyContext) { |
| 645 | fProxyContext->shadeSpan(x, y, span, count); |
| 646 | } |
commit-bot@chromium.org | bc2f1dc | 2014-04-23 09:11:58 +0000 | [diff] [blame] | 647 | |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 648 | if (fMask == NULL) { |
| 649 | if (fProxyContext == NULL) { |
| 650 | sk_memset32(span, fPMColor, count); |
| 651 | } |
| 652 | return; |
| 653 | } |
| 654 | |
| 655 | SkASSERT(fMask->fBounds.contains(x, y)); |
| 656 | SkASSERT(fMask->fBounds.contains(x + count - 1, y)); |
| 657 | |
| 658 | size_t size = fMask->computeImageSize(); |
| 659 | const uint8_t* alpha = fMask->getAddr8(x, y); |
| 660 | const uint8_t* mulp = alpha + size; |
| 661 | const uint8_t* addp = mulp + size; |
| 662 | |
| 663 | if (fProxyContext) { |
| 664 | for (int i = 0; i < count; i++) { |
| 665 | if (alpha[i]) { |
| 666 | SkPMColor c = span[i]; |
| 667 | if (c) { |
| 668 | unsigned a = SkGetPackedA32(c); |
| 669 | unsigned r = SkGetPackedR32(c); |
| 670 | unsigned g = SkGetPackedG32(c); |
| 671 | unsigned b = SkGetPackedB32(c); |
| 672 | |
| 673 | unsigned mul = SkAlpha255To256(mulp[i]); |
| 674 | unsigned add = addp[i]; |
| 675 | |
| 676 | r = SkFastMin32(SkAlphaMul(r, mul) + add, a); |
| 677 | g = SkFastMin32(SkAlphaMul(g, mul) + add, a); |
| 678 | b = SkFastMin32(SkAlphaMul(b, mul) + add, a); |
| 679 | |
| 680 | span[i] = SkPackARGB32(a, r, g, b); |
| 681 | } |
| 682 | } else { |
| 683 | span[i] = 0; |
| 684 | } |
| 685 | } |
| 686 | } else { // color |
| 687 | unsigned a = SkGetPackedA32(fPMColor); |
| 688 | unsigned r = SkGetPackedR32(fPMColor); |
| 689 | unsigned g = SkGetPackedG32(fPMColor); |
| 690 | unsigned b = SkGetPackedB32(fPMColor); |
| 691 | for (int i = 0; i < count; i++) { |
| 692 | if (alpha[i]) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 693 | unsigned mul = SkAlpha255To256(mulp[i]); |
| 694 | unsigned add = addp[i]; |
| 695 | |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 696 | span[i] = SkPackARGB32( a, |
| 697 | SkFastMin32(SkAlphaMul(r, mul) + add, a), |
| 698 | SkFastMin32(SkAlphaMul(g, mul) + add, a), |
| 699 | SkFastMin32(SkAlphaMul(b, mul) + add, a)); |
| 700 | } else { |
| 701 | span[i] = 0; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 702 | } |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 703 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 704 | } |
| 705 | } |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 706 | |
| 707 | private: |
| 708 | // Unowned. |
| 709 | const SkMask* fMask; |
| 710 | // Memory is unowned, but we need to call the destructor. |
| 711 | SkShader::Context* fProxyContext; |
| 712 | SkPMColor fPMColor; |
| 713 | |
| 714 | typedef SkShader::Context INHERITED; |
| 715 | }; |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 716 | |
commit-bot@chromium.org | 0f10f7b | 2014-03-13 18:02:17 +0000 | [diff] [blame] | 717 | #ifndef SK_IGNORE_TO_STRING |
robertphillips@google.com | 76f9e93 | 2013-01-15 20:17:47 +0000 | [diff] [blame] | 718 | virtual void toString(SkString* str) const SK_OVERRIDE { |
| 719 | str->append("Sk3DShader: ("); |
| 720 | |
| 721 | if (NULL != fProxy) { |
| 722 | str->append("Proxy: "); |
| 723 | fProxy->toString(str); |
| 724 | } |
| 725 | |
| 726 | this->INHERITED::toString(str); |
| 727 | |
| 728 | str->append(")"); |
| 729 | } |
| 730 | #endif |
| 731 | |
djsollen@google.com | ba28d03 | 2012-03-26 17:57:35 +0000 | [diff] [blame] | 732 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(Sk3DShader) |
| 733 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 734 | protected: |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 735 | Sk3DShader(SkReadBuffer& buffer) : INHERITED(buffer) { |
reed@google.com | 3534822 | 2013-10-16 13:05:06 +0000 | [diff] [blame] | 736 | fProxy = buffer.readShader(); |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 737 | // Leaving this here until we bump the picture version, though this |
| 738 | // shader should never be recorded. |
| 739 | buffer.readColor(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 740 | } |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 741 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 742 | virtual void flatten(SkWriteBuffer& buffer) const SK_OVERRIDE { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 743 | this->INHERITED::flatten(buffer); |
| 744 | buffer.writeFlattenable(fProxy); |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 745 | // Leaving this here until we bump the picture version, though this |
| 746 | // shader should never be recorded. |
| 747 | buffer.writeColor(SkColor()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 748 | } |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 749 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 750 | private: |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 751 | SkShader* fProxy; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 752 | |
| 753 | typedef SkShader INHERITED; |
| 754 | }; |
| 755 | |
| 756 | class Sk3DBlitter : public SkBlitter { |
| 757 | public: |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 758 | Sk3DBlitter(SkBlitter* proxy, Sk3DShader::Sk3DShaderContext* shaderContext) |
commit-bot@chromium.org | a5572e5 | 2014-03-07 03:24:41 +0000 | [diff] [blame] | 759 | : fProxy(proxy) |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 760 | , f3DShaderContext(shaderContext) |
commit-bot@chromium.org | a5572e5 | 2014-03-07 03:24:41 +0000 | [diff] [blame] | 761 | {} |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 762 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 763 | virtual void blitH(int x, int y, int width) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 764 | fProxy->blitH(x, y, width); |
| 765 | } |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 766 | |
| 767 | virtual void blitAntiH(int x, int y, const SkAlpha antialias[], |
| 768 | const int16_t runs[]) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 769 | fProxy->blitAntiH(x, y, antialias, runs); |
| 770 | } |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 771 | |
| 772 | virtual void blitV(int x, int y, int height, SkAlpha alpha) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 773 | fProxy->blitV(x, y, height, alpha); |
| 774 | } |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 775 | |
| 776 | virtual void blitRect(int x, int y, int width, int height) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 777 | fProxy->blitRect(x, y, width, height); |
| 778 | } |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 779 | |
| 780 | virtual void blitMask(const SkMask& mask, const SkIRect& clip) { |
| 781 | if (mask.fFormat == SkMask::k3D_Format) { |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 782 | f3DShaderContext->setMask(&mask); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 783 | |
| 784 | ((SkMask*)&mask)->fFormat = SkMask::kA8_Format; |
| 785 | fProxy->blitMask(mask, clip); |
| 786 | ((SkMask*)&mask)->fFormat = SkMask::k3D_Format; |
| 787 | |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 788 | f3DShaderContext->setMask(NULL); |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 789 | } else { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 790 | fProxy->blitMask(mask, clip); |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 791 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 792 | } |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 793 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 794 | private: |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 795 | // Both pointers are unowned. They will be deleted by SkSmallAllocator. |
| 796 | SkBlitter* fProxy; |
| 797 | Sk3DShader::Sk3DShaderContext* f3DShaderContext; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 798 | }; |
| 799 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 800 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 801 | |
| 802 | #include "SkCoreBlitters.h" |
| 803 | |
reed@android.com | d252db0 | 2009-04-01 18:31:44 +0000 | [diff] [blame] | 804 | static bool just_solid_color(const SkPaint& paint) { |
| 805 | if (paint.getAlpha() == 0xFF && paint.getColorFilter() == NULL) { |
| 806 | SkShader* shader = paint.getShader(); |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 807 | if (NULL == shader) { |
reed@android.com | d252db0 | 2009-04-01 18:31:44 +0000 | [diff] [blame] | 808 | return true; |
| 809 | } |
| 810 | } |
| 811 | return false; |
| 812 | } |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 813 | |
reed@android.com | d252db0 | 2009-04-01 18:31:44 +0000 | [diff] [blame] | 814 | /** By analyzing the paint (with an xfermode), we may decide we can take |
| 815 | special action. This enum lists our possible actions |
| 816 | */ |
| 817 | enum XferInterp { |
| 818 | kNormal_XferInterp, // no special interpretation, draw normally |
| 819 | kSrcOver_XferInterp, // draw as if in srcover mode |
| 820 | kSkipDrawing_XferInterp // draw nothing |
| 821 | }; |
| 822 | |
| 823 | static XferInterp interpret_xfermode(const SkPaint& paint, SkXfermode* xfer, |
reed@google.com | 900ecf2 | 2014-02-20 20:55:37 +0000 | [diff] [blame] | 824 | SkColorType deviceCT) { |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 825 | SkXfermode::Mode mode; |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 826 | |
mike@reedtribe.org | be2aa2a | 2011-11-17 02:32:04 +0000 | [diff] [blame] | 827 | if (SkXfermode::AsMode(xfer, &mode)) { |
reed@android.com | d252db0 | 2009-04-01 18:31:44 +0000 | [diff] [blame] | 828 | switch (mode) { |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 829 | case SkXfermode::kSrc_Mode: |
reed@android.com | d252db0 | 2009-04-01 18:31:44 +0000 | [diff] [blame] | 830 | if (just_solid_color(paint)) { |
| 831 | return kSrcOver_XferInterp; |
| 832 | } |
| 833 | break; |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 834 | case SkXfermode::kDst_Mode: |
reed@android.com | d252db0 | 2009-04-01 18:31:44 +0000 | [diff] [blame] | 835 | return kSkipDrawing_XferInterp; |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 836 | case SkXfermode::kSrcOver_Mode: |
reed@android.com | d252db0 | 2009-04-01 18:31:44 +0000 | [diff] [blame] | 837 | return kSrcOver_XferInterp; |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 838 | case SkXfermode::kDstOver_Mode: |
reed@google.com | 900ecf2 | 2014-02-20 20:55:37 +0000 | [diff] [blame] | 839 | if (kRGB_565_SkColorType == deviceCT) { |
reed@android.com | d252db0 | 2009-04-01 18:31:44 +0000 | [diff] [blame] | 840 | return kSkipDrawing_XferInterp; |
| 841 | } |
| 842 | break; |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 843 | case SkXfermode::kSrcIn_Mode: |
reed@google.com | 900ecf2 | 2014-02-20 20:55:37 +0000 | [diff] [blame] | 844 | if (kRGB_565_SkColorType == deviceCT && |
reed@android.com | d252db0 | 2009-04-01 18:31:44 +0000 | [diff] [blame] | 845 | just_solid_color(paint)) { |
| 846 | return kSrcOver_XferInterp; |
| 847 | } |
| 848 | break; |
reed@android.com | 845fdac | 2009-06-23 03:01:32 +0000 | [diff] [blame] | 849 | case SkXfermode::kDstIn_Mode: |
reed@android.com | d252db0 | 2009-04-01 18:31:44 +0000 | [diff] [blame] | 850 | if (just_solid_color(paint)) { |
| 851 | return kSkipDrawing_XferInterp; |
| 852 | } |
| 853 | break; |
| 854 | default: |
| 855 | break; |
| 856 | } |
| 857 | } |
| 858 | return kNormal_XferInterp; |
| 859 | } |
| 860 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 861 | SkBlitter* SkBlitter::Choose(const SkBitmap& device, |
| 862 | const SkMatrix& matrix, |
reed@google.com | 6b7aee3 | 2011-04-19 18:36:09 +0000 | [diff] [blame] | 863 | const SkPaint& origPaint, |
commit-bot@chromium.org | a5572e5 | 2014-03-07 03:24:41 +0000 | [diff] [blame] | 864 | SkTBlitterAllocator* allocator, |
reed@google.com | 126f7f5 | 2013-11-07 16:06:53 +0000 | [diff] [blame] | 865 | bool drawCoverage) { |
commit-bot@chromium.org | a5572e5 | 2014-03-07 03:24:41 +0000 | [diff] [blame] | 866 | SkASSERT(allocator != NULL); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 867 | |
| 868 | SkBlitter* blitter = NULL; |
| 869 | |
| 870 | // which check, in case we're being called by a client with a dummy device |
| 871 | // (e.g. they have a bounder that always aborts the draw) |
reed@google.com | 900ecf2 | 2014-02-20 20:55:37 +0000 | [diff] [blame] | 872 | if (kUnknown_SkColorType == device.colorType() || |
| 873 | (drawCoverage && (kAlpha_8_SkColorType != device.colorType()))) { |
commit-bot@chromium.org | a5572e5 | 2014-03-07 03:24:41 +0000 | [diff] [blame] | 874 | blitter = allocator->createT<SkNullBlitter>(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 875 | return blitter; |
| 876 | } |
| 877 | |
reed@google.com | 4588490 | 2012-05-11 14:38:51 +0000 | [diff] [blame] | 878 | SkShader* shader = origPaint.getShader(); |
| 879 | SkColorFilter* cf = origPaint.getColorFilter(); |
| 880 | SkXfermode* mode = origPaint.getXfermode(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 881 | Sk3DShader* shader3D = NULL; |
reed@google.com | 4588490 | 2012-05-11 14:38:51 +0000 | [diff] [blame] | 882 | |
bsalomon@google.com | 5dc26b9 | 2012-10-11 19:32:32 +0000 | [diff] [blame] | 883 | SkTCopyOnFirstWrite<SkPaint> paint(origPaint); |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 884 | |
reed@google.com | 4588490 | 2012-05-11 14:38:51 +0000 | [diff] [blame] | 885 | if (origPaint.getMaskFilter() != NULL && |
| 886 | origPaint.getMaskFilter()->getFormat() == SkMask::k3D_Format) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 887 | shader3D = SkNEW_ARGS(Sk3DShader, (shader)); |
reed@google.com | 4588490 | 2012-05-11 14:38:51 +0000 | [diff] [blame] | 888 | // we know we haven't initialized lazyPaint yet, so just do it |
bsalomon@google.com | 5dc26b9 | 2012-10-11 19:32:32 +0000 | [diff] [blame] | 889 | paint.writable()->setShader(shader3D)->unref(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 890 | shader = shader3D; |
| 891 | } |
| 892 | |
reed@android.com | d252db0 | 2009-04-01 18:31:44 +0000 | [diff] [blame] | 893 | if (NULL != mode) { |
reed@google.com | 900ecf2 | 2014-02-20 20:55:37 +0000 | [diff] [blame] | 894 | switch (interpret_xfermode(*paint, mode, device.colorType())) { |
reed@android.com | d252db0 | 2009-04-01 18:31:44 +0000 | [diff] [blame] | 895 | case kSrcOver_XferInterp: |
| 896 | mode = NULL; |
bsalomon@google.com | 5dc26b9 | 2012-10-11 19:32:32 +0000 | [diff] [blame] | 897 | paint.writable()->setXfermode(NULL); |
reed@android.com | d252db0 | 2009-04-01 18:31:44 +0000 | [diff] [blame] | 898 | break; |
commit-bot@chromium.org | a5572e5 | 2014-03-07 03:24:41 +0000 | [diff] [blame] | 899 | case kSkipDrawing_XferInterp:{ |
| 900 | blitter = allocator->createT<SkNullBlitter>(); |
reed@android.com | d252db0 | 2009-04-01 18:31:44 +0000 | [diff] [blame] | 901 | return blitter; |
commit-bot@chromium.org | a5572e5 | 2014-03-07 03:24:41 +0000 | [diff] [blame] | 902 | } |
reed@android.com | d252db0 | 2009-04-01 18:31:44 +0000 | [diff] [blame] | 903 | default: |
| 904 | break; |
| 905 | } |
| 906 | } |
| 907 | |
reed@google.com | 13201e7 | 2012-11-16 13:20:41 +0000 | [diff] [blame] | 908 | /* |
| 909 | * If the xfermode is CLEAR, then we can completely ignore the installed |
| 910 | * color/shader/colorfilter, and just pretend we're SRC + color==0. This |
| 911 | * will fall into our optimizations for SRC mode. |
| 912 | */ |
| 913 | if (SkXfermode::IsMode(mode, SkXfermode::kClear_Mode)) { |
| 914 | SkPaint* p = paint.writable(); |
| 915 | shader = p->setShader(NULL); |
| 916 | cf = p->setColorFilter(NULL); |
| 917 | mode = p->setXfermodeMode(SkXfermode::kSrc_Mode); |
| 918 | p->setColor(0); |
| 919 | } |
reed@google.com | 13201e7 | 2012-11-16 13:20:41 +0000 | [diff] [blame] | 920 | |
reed@google.com | 6b7aee3 | 2011-04-19 18:36:09 +0000 | [diff] [blame] | 921 | if (NULL == shader) { |
reed@google.com | 6b7aee3 | 2011-04-19 18:36:09 +0000 | [diff] [blame] | 922 | if (mode) { |
reed@google.com | 6b7aee3 | 2011-04-19 18:36:09 +0000 | [diff] [blame] | 923 | // xfermodes (and filters) require shaders for our current blitters |
commit-bot@chromium.org | 76a3b2a | 2014-04-24 16:54:46 +0000 | [diff] [blame] | 924 | shader = SkNEW_ARGS(SkColorShader, (paint->getColor())); |
bsalomon@google.com | 5dc26b9 | 2012-10-11 19:32:32 +0000 | [diff] [blame] | 925 | paint.writable()->setShader(shader)->unref(); |
commit-bot@chromium.org | 76a3b2a | 2014-04-24 16:54:46 +0000 | [diff] [blame] | 926 | paint.writable()->setAlpha(0xFF); |
reed@google.com | 6b7aee3 | 2011-04-19 18:36:09 +0000 | [diff] [blame] | 927 | } else if (cf) { |
| 928 | // if no shader && no xfermode, we just apply the colorfilter to |
| 929 | // our color and move on. |
bsalomon@google.com | 5dc26b9 | 2012-10-11 19:32:32 +0000 | [diff] [blame] | 930 | SkPaint* writablePaint = paint.writable(); |
| 931 | writablePaint->setColor(cf->filterColor(paint->getColor())); |
| 932 | writablePaint->setColorFilter(NULL); |
reed@google.com | 6b7aee3 | 2011-04-19 18:36:09 +0000 | [diff] [blame] | 933 | cf = NULL; |
| 934 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 935 | } |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 936 | |
reed@google.com | 6b7aee3 | 2011-04-19 18:36:09 +0000 | [diff] [blame] | 937 | if (cf) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 938 | SkASSERT(shader); |
reed@google.com | 6b7aee3 | 2011-04-19 18:36:09 +0000 | [diff] [blame] | 939 | shader = SkNEW_ARGS(SkFilterShader, (shader, cf)); |
bsalomon@google.com | 5dc26b9 | 2012-10-11 19:32:32 +0000 | [diff] [blame] | 940 | paint.writable()->setShader(shader)->unref(); |
reed@android.com | 1fc4c60 | 2009-10-02 16:34:57 +0000 | [diff] [blame] | 941 | // blitters should ignore the presence/absence of a filter, since |
| 942 | // if there is one, the shader will take care of it. |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 943 | } |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 944 | |
reed@google.com | a641f3f | 2012-12-13 22:16:30 +0000 | [diff] [blame] | 945 | /* |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 946 | * We create a SkShader::Context object, and store it on the blitter. |
reed@google.com | a641f3f | 2012-12-13 22:16:30 +0000 | [diff] [blame] | 947 | */ |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 948 | SkShader::Context* shaderContext; |
| 949 | if (shader) { |
commit-bot@chromium.org | e901b6d | 2014-05-01 19:31:31 +0000 | [diff] [blame^] | 950 | SkShader::ContextRec rec(device, *paint, matrix); |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 951 | // Try to create the ShaderContext |
| 952 | void* storage = allocator->reserveT<SkShader::Context>(shader->contextSize()); |
commit-bot@chromium.org | e901b6d | 2014-05-01 19:31:31 +0000 | [diff] [blame^] | 953 | shaderContext = shader->createContext(rec, storage); |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 954 | if (!shaderContext) { |
| 955 | allocator->freeLast(); |
| 956 | blitter = allocator->createT<SkNullBlitter>(); |
| 957 | return blitter; |
| 958 | } |
| 959 | SkASSERT(shaderContext); |
| 960 | SkASSERT((void*) shaderContext == storage); |
| 961 | } else { |
| 962 | shaderContext = NULL; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 963 | } |
| 964 | |
skia.committer@gmail.com | ab7442c | 2013-11-08 07:01:56 +0000 | [diff] [blame] | 965 | |
reed@google.com | 900ecf2 | 2014-02-20 20:55:37 +0000 | [diff] [blame] | 966 | switch (device.colorType()) { |
| 967 | case kAlpha_8_SkColorType: |
reed@google.com | 126f7f5 | 2013-11-07 16:06:53 +0000 | [diff] [blame] | 968 | if (drawCoverage) { |
| 969 | SkASSERT(NULL == shader); |
| 970 | SkASSERT(NULL == paint->getXfermode()); |
commit-bot@chromium.org | a5572e5 | 2014-03-07 03:24:41 +0000 | [diff] [blame] | 971 | blitter = allocator->createT<SkA8_Coverage_Blitter>(device, *paint); |
reed@google.com | 126f7f5 | 2013-11-07 16:06:53 +0000 | [diff] [blame] | 972 | } else if (shader) { |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 973 | blitter = allocator->createT<SkA8_Shader_Blitter>(device, *paint, shaderContext); |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 974 | } else { |
commit-bot@chromium.org | a5572e5 | 2014-03-07 03:24:41 +0000 | [diff] [blame] | 975 | blitter = allocator->createT<SkA8_Blitter>(device, *paint); |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 976 | } |
| 977 | break; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 978 | |
reed@google.com | 900ecf2 | 2014-02-20 20:55:37 +0000 | [diff] [blame] | 979 | case kRGB_565_SkColorType: |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 980 | blitter = SkBlitter_ChooseD565(device, *paint, shaderContext, allocator); |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 981 | break; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 982 | |
commit-bot@chromium.org | 28fcae2 | 2014-04-11 17:15:40 +0000 | [diff] [blame] | 983 | case kN32_SkColorType: |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 984 | if (shader) { |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 985 | blitter = allocator->createT<SkARGB32_Shader_Blitter>( |
| 986 | device, *paint, shaderContext); |
reed@google.com | 4588490 | 2012-05-11 14:38:51 +0000 | [diff] [blame] | 987 | } else if (paint->getColor() == SK_ColorBLACK) { |
commit-bot@chromium.org | a5572e5 | 2014-03-07 03:24:41 +0000 | [diff] [blame] | 988 | blitter = allocator->createT<SkARGB32_Black_Blitter>(device, *paint); |
reed@google.com | 4588490 | 2012-05-11 14:38:51 +0000 | [diff] [blame] | 989 | } else if (paint->getAlpha() == 0xFF) { |
commit-bot@chromium.org | a5572e5 | 2014-03-07 03:24:41 +0000 | [diff] [blame] | 990 | blitter = allocator->createT<SkARGB32_Opaque_Blitter>(device, *paint); |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 991 | } else { |
commit-bot@chromium.org | a5572e5 | 2014-03-07 03:24:41 +0000 | [diff] [blame] | 992 | blitter = allocator->createT<SkARGB32_Blitter>(device, *paint); |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 993 | } |
| 994 | break; |
| 995 | |
| 996 | default: |
tomhudson@google.com | 0c00f21 | 2011-12-28 14:59:50 +0000 | [diff] [blame] | 997 | SkDEBUGFAIL("unsupported device config"); |
commit-bot@chromium.org | a5572e5 | 2014-03-07 03:24:41 +0000 | [diff] [blame] | 998 | blitter = allocator->createT<SkNullBlitter>(); |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 999 | break; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1000 | } |
| 1001 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 1002 | if (shader3D) { |
commit-bot@chromium.org | a5572e5 | 2014-03-07 03:24:41 +0000 | [diff] [blame] | 1003 | SkBlitter* innerBlitter = blitter; |
| 1004 | // innerBlitter was allocated by allocator, which will delete it. |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 1005 | // We know shaderContext is of type Sk3DShaderContext because it belongs to shader3D. |
| 1006 | blitter = allocator->createT<Sk3DBlitter>(innerBlitter, |
| 1007 | static_cast<Sk3DShader::Sk3DShaderContext*>(shaderContext)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1008 | } |
| 1009 | return blitter; |
| 1010 | } |
| 1011 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 1012 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1013 | |
| 1014 | const uint16_t gMask_0F0F = 0xF0F; |
| 1015 | const uint32_t gMask_00FF00FF = 0xFF00FF; |
| 1016 | |
reed@google.com | 82065d6 | 2011-02-07 15:30:46 +0000 | [diff] [blame] | 1017 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1018 | |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 1019 | SkShaderBlitter::SkShaderBlitter(const SkBitmap& device, const SkPaint& paint, |
| 1020 | SkShader::Context* shaderContext) |
| 1021 | : INHERITED(device) |
| 1022 | , fShader(paint.getShader()) |
| 1023 | , fShaderContext(shaderContext) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1024 | SkASSERT(fShader); |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 1025 | SkASSERT(fShaderContext); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1026 | |
| 1027 | fShader->ref(); |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 1028 | fShaderFlags = fShaderContext->getFlags(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1029 | } |
| 1030 | |
reed@android.com | 5119bdb | 2009-06-12 21:27:03 +0000 | [diff] [blame] | 1031 | SkShaderBlitter::~SkShaderBlitter() { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 1032 | fShader->unref(); |
| 1033 | } |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 1034 | |
| 1035 | bool SkShaderBlitter::resetShaderContext(const SkBitmap& device, const SkPaint& paint, |
| 1036 | const SkMatrix& matrix) { |
commit-bot@chromium.org | e901b6d | 2014-05-01 19:31:31 +0000 | [diff] [blame^] | 1037 | SkShader::ContextRec rec(device, paint, matrix); |
| 1038 | if (!fShader->validContext(rec)) { |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 1039 | return false; |
| 1040 | } |
| 1041 | |
| 1042 | // Only destroy the old context if we have a new one. We need to ensure to have a |
| 1043 | // live context in fShaderContext because the storage is owned by an SkSmallAllocator |
| 1044 | // outside of this class. |
| 1045 | // The new context will be of the same size as the old one because we use the same |
| 1046 | // shader to create it. It is therefore safe to re-use the storage. |
| 1047 | fShaderContext->~Context(); |
commit-bot@chromium.org | e901b6d | 2014-05-01 19:31:31 +0000 | [diff] [blame^] | 1048 | fShaderContext = fShader->createContext(rec, (void*)fShaderContext); |
commit-bot@chromium.org | 87fcd95 | 2014-04-23 19:10:51 +0000 | [diff] [blame] | 1049 | SkASSERT(fShaderContext); |
| 1050 | |
| 1051 | return true; |
| 1052 | } |