epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2006 The Android Open Source Project |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 8 | |
vandebo@chromium.org | d3ae779 | 2011-02-24 00:21:06 +0000 | [diff] [blame] | 9 | #include "SkScalar.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 10 | #include "SkShader.h" |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 11 | #include "SkReadBuffer.h" |
| 12 | #include "SkWriteBuffer.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 13 | #include "SkPaint.h" |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 14 | #include "SkMallocPixelRef.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 15 | |
bsalomon@google.com | f94b3a4 | 2012-10-31 18:09:01 +0000 | [diff] [blame] | 16 | SkShader::SkShader() { |
| 17 | fLocalMatrix.reset(); |
reed@google.com | a641f3f | 2012-12-13 22:16:30 +0000 | [diff] [blame] | 18 | SkDEBUGCODE(fInSetContext = false;) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 19 | } |
| 20 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 21 | SkShader::SkShader(SkReadBuffer& buffer) |
bsalomon@google.com | f94b3a4 | 2012-10-31 18:09:01 +0000 | [diff] [blame] | 22 | : INHERITED(buffer) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 23 | if (buffer.readBool()) { |
bsalomon@google.com | f94b3a4 | 2012-10-31 18:09:01 +0000 | [diff] [blame] | 24 | buffer.readMatrix(&fLocalMatrix); |
| 25 | } else { |
| 26 | fLocalMatrix.reset(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 27 | } |
bsalomon@google.com | f94b3a4 | 2012-10-31 18:09:01 +0000 | [diff] [blame] | 28 | |
reed@google.com | a641f3f | 2012-12-13 22:16:30 +0000 | [diff] [blame] | 29 | SkDEBUGCODE(fInSetContext = false;) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 30 | } |
| 31 | |
| 32 | SkShader::~SkShader() { |
reed@google.com | a641f3f | 2012-12-13 22:16:30 +0000 | [diff] [blame] | 33 | SkASSERT(!fInSetContext); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 34 | } |
| 35 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 36 | void SkShader::flatten(SkWriteBuffer& buffer) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 37 | this->INHERITED::flatten(buffer); |
bsalomon@google.com | f94b3a4 | 2012-10-31 18:09:01 +0000 | [diff] [blame] | 38 | bool hasLocalM = this->hasLocalMatrix(); |
| 39 | buffer.writeBool(hasLocalM); |
| 40 | if (hasLocalM) { |
| 41 | buffer.writeMatrix(fLocalMatrix); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 42 | } |
| 43 | } |
| 44 | |
| 45 | bool SkShader::setContext(const SkBitmap& device, |
| 46 | const SkPaint& paint, |
| 47 | const SkMatrix& matrix) { |
reed@google.com | a641f3f | 2012-12-13 22:16:30 +0000 | [diff] [blame] | 48 | SkASSERT(!this->setContextHasBeenCalled()); |
| 49 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 50 | const SkMatrix* m = &matrix; |
| 51 | SkMatrix total; |
| 52 | |
reed@google.com | 4469938 | 2013-10-31 17:28:30 +0000 | [diff] [blame] | 53 | fDeviceConfig = SkToU8(device.config()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 54 | fPaintAlpha = paint.getAlpha(); |
bsalomon@google.com | f94b3a4 | 2012-10-31 18:09:01 +0000 | [diff] [blame] | 55 | if (this->hasLocalMatrix()) { |
| 56 | total.setConcat(matrix, this->getLocalMatrix()); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 57 | m = &total; |
| 58 | } |
| 59 | if (m->invert(&fTotalInverse)) { |
| 60 | fTotalInverseClass = (uint8_t)ComputeMatrixClass(fTotalInverse); |
reed@google.com | a641f3f | 2012-12-13 22:16:30 +0000 | [diff] [blame] | 61 | SkDEBUGCODE(fInSetContext = true;) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 62 | return true; |
| 63 | } |
| 64 | return false; |
| 65 | } |
| 66 | |
reed@google.com | a641f3f | 2012-12-13 22:16:30 +0000 | [diff] [blame] | 67 | void SkShader::endContext() { |
| 68 | SkASSERT(fInSetContext); |
| 69 | SkDEBUGCODE(fInSetContext = false;) |
| 70 | } |
| 71 | |
reed@google.com | 3bafe74 | 2012-10-12 18:56:18 +0000 | [diff] [blame] | 72 | SkShader::ShadeProc SkShader::asAShadeProc(void** ctx) { |
| 73 | return NULL; |
| 74 | } |
| 75 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 76 | #include "SkColorPriv.h" |
| 77 | |
| 78 | void SkShader::shadeSpan16(int x, int y, uint16_t span16[], int count) { |
| 79 | SkASSERT(span16); |
| 80 | SkASSERT(count > 0); |
| 81 | SkASSERT(this->canCallShadeSpan16()); |
| 82 | |
| 83 | // basically, if we get here, the subclass screwed up |
tomhudson@google.com | 0c00f21 | 2011-12-28 14:59:50 +0000 | [diff] [blame] | 84 | SkDEBUGFAIL("kHasSpan16 flag is set, but shadeSpan16() not implemented"); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 85 | } |
| 86 | |
| 87 | #define kTempColorQuadCount 6 // balance between speed (larger) and saving stack-space |
reed@google.com | 7c2f27d | 2011-03-07 19:29:00 +0000 | [diff] [blame] | 88 | #define kTempColorCount (kTempColorQuadCount << 2) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 89 | |
| 90 | #ifdef SK_CPU_BENDIAN |
| 91 | #define SkU32BitShiftToByteOffset(shift) (3 - ((shift) >> 3)) |
| 92 | #else |
| 93 | #define SkU32BitShiftToByteOffset(shift) ((shift) >> 3) |
| 94 | #endif |
| 95 | |
| 96 | void SkShader::shadeSpanAlpha(int x, int y, uint8_t alpha[], int count) { |
| 97 | SkASSERT(count > 0); |
| 98 | |
| 99 | SkPMColor colors[kTempColorCount]; |
| 100 | |
| 101 | while ((count -= kTempColorCount) >= 0) { |
| 102 | this->shadeSpan(x, y, colors, kTempColorCount); |
| 103 | x += kTempColorCount; |
| 104 | |
| 105 | const uint8_t* srcA = (const uint8_t*)colors + SkU32BitShiftToByteOffset(SK_A32_SHIFT); |
| 106 | int quads = kTempColorQuadCount; |
| 107 | do { |
| 108 | U8CPU a0 = srcA[0]; |
| 109 | U8CPU a1 = srcA[4]; |
| 110 | U8CPU a2 = srcA[8]; |
| 111 | U8CPU a3 = srcA[12]; |
| 112 | srcA += 4*4; |
| 113 | *alpha++ = SkToU8(a0); |
| 114 | *alpha++ = SkToU8(a1); |
| 115 | *alpha++ = SkToU8(a2); |
| 116 | *alpha++ = SkToU8(a3); |
| 117 | } while (--quads != 0); |
| 118 | } |
| 119 | SkASSERT(count < 0); |
| 120 | SkASSERT(count + kTempColorCount >= 0); |
| 121 | if (count += kTempColorCount) { |
| 122 | this->shadeSpan(x, y, colors, count); |
| 123 | |
| 124 | const uint8_t* srcA = (const uint8_t*)colors + SkU32BitShiftToByteOffset(SK_A32_SHIFT); |
| 125 | do { |
| 126 | *alpha++ = *srcA; |
| 127 | srcA += 4; |
| 128 | } while (--count != 0); |
| 129 | } |
| 130 | #if 0 |
| 131 | do { |
| 132 | int n = count; |
| 133 | if (n > kTempColorCount) |
| 134 | n = kTempColorCount; |
| 135 | SkASSERT(n > 0); |
| 136 | |
| 137 | this->shadeSpan(x, y, colors, n); |
| 138 | x += n; |
| 139 | count -= n; |
| 140 | |
| 141 | const uint8_t* srcA = (const uint8_t*)colors + SkU32BitShiftToByteOffset(SK_A32_SHIFT); |
| 142 | do { |
| 143 | *alpha++ = *srcA; |
| 144 | srcA += 4; |
| 145 | } while (--n != 0); |
| 146 | } while (count > 0); |
| 147 | #endif |
| 148 | } |
| 149 | |
| 150 | SkShader::MatrixClass SkShader::ComputeMatrixClass(const SkMatrix& mat) { |
| 151 | MatrixClass mc = kLinear_MatrixClass; |
| 152 | |
tomhudson@google.com | 8d43018 | 2011-06-06 19:11:19 +0000 | [diff] [blame] | 153 | if (mat.hasPerspective()) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 154 | if (mat.fixedStepInX(0, NULL, NULL)) { |
| 155 | mc = kFixedStepInX_MatrixClass; |
| 156 | } else { |
| 157 | mc = kPerspective_MatrixClass; |
| 158 | } |
| 159 | } |
| 160 | return mc; |
| 161 | } |
| 162 | |
| 163 | ////////////////////////////////////////////////////////////////////////////// |
| 164 | |
vandebo@chromium.org | d3ae779 | 2011-02-24 00:21:06 +0000 | [diff] [blame] | 165 | SkShader::BitmapType SkShader::asABitmap(SkBitmap*, SkMatrix*, |
rileya@google.com | 91f319c | 2012-07-25 17:18:31 +0000 | [diff] [blame] | 166 | TileMode*) const { |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 167 | return kNone_BitmapType; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 168 | } |
| 169 | |
vandebo@chromium.org | d3ae779 | 2011-02-24 00:21:06 +0000 | [diff] [blame] | 170 | SkShader::GradientType SkShader::asAGradient(GradientInfo* info) const { |
| 171 | return kNone_GradientType; |
| 172 | } |
| 173 | |
bsalomon@google.com | 0ac6af4 | 2013-01-16 15:16:18 +0000 | [diff] [blame] | 174 | GrEffectRef* SkShader::asNewEffect(GrContext*, const SkPaint&) const { |
humper@google.com | a3bdc1a | 2013-01-14 21:01:28 +0000 | [diff] [blame] | 175 | return NULL; |
rileya@google.com | 03c1c35 | 2012-07-20 20:02:43 +0000 | [diff] [blame] | 176 | } |
| 177 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 178 | SkShader* SkShader::CreateBitmapShader(const SkBitmap& src, |
| 179 | TileMode tmx, TileMode tmy) { |
| 180 | return SkShader::CreateBitmapShader(src, tmx, tmy, NULL, 0); |
| 181 | } |
| 182 | |
robertphillips@google.com | 76f9e93 | 2013-01-15 20:17:47 +0000 | [diff] [blame] | 183 | #ifdef SK_DEVELOPER |
| 184 | void SkShader::toString(SkString* str) const { |
| 185 | if (this->hasLocalMatrix()) { |
| 186 | str->append(" "); |
| 187 | this->getLocalMatrix().toString(str); |
| 188 | } |
| 189 | } |
| 190 | #endif |
| 191 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 192 | ////////////////////////////////////////////////////////////////////////////// |
| 193 | |
| 194 | #include "SkColorShader.h" |
| 195 | #include "SkUtils.h" |
| 196 | |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 197 | SkColorShader::SkColorShader() { |
| 198 | fFlags = 0; |
| 199 | fInheritColor = true; |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 200 | } |
| 201 | |
| 202 | SkColorShader::SkColorShader(SkColor c) { |
| 203 | fFlags = 0; |
| 204 | fColor = c; |
| 205 | fInheritColor = false; |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 206 | } |
| 207 | |
reed@google.com | 2be9e8b | 2011-07-06 21:18:09 +0000 | [diff] [blame] | 208 | SkColorShader::~SkColorShader() {} |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 209 | |
junov@chromium.org | b6e1619 | 2011-12-09 15:48:03 +0000 | [diff] [blame] | 210 | bool SkColorShader::isOpaque() const { |
| 211 | if (fInheritColor) { |
| 212 | return true; // using paint's alpha |
| 213 | } |
| 214 | return SkColorGetA(fColor) == 255; |
| 215 | } |
| 216 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 217 | SkColorShader::SkColorShader(SkReadBuffer& b) : INHERITED(b) { |
reed@android.com | 5119bdb | 2009-06-12 21:27:03 +0000 | [diff] [blame] | 218 | fFlags = 0; // computed in setContext |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 219 | |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 220 | fInheritColor = b.readBool(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 221 | if (fInheritColor) { |
| 222 | return; |
| 223 | } |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 224 | fColor = b.readColor(); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 225 | } |
| 226 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 227 | void SkColorShader::flatten(SkWriteBuffer& buffer) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 228 | this->INHERITED::flatten(buffer); |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 229 | buffer.writeBool(fInheritColor); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 230 | if (fInheritColor) { |
| 231 | return; |
| 232 | } |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 233 | buffer.writeColor(fColor); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 234 | } |
| 235 | |
reed@google.com | 59ccef6 | 2011-12-07 14:59:50 +0000 | [diff] [blame] | 236 | uint32_t SkColorShader::getFlags() { |
| 237 | return fFlags; |
| 238 | } |
| 239 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 240 | uint8_t SkColorShader::getSpan16Alpha() const { |
| 241 | return SkGetPackedA32(fPMColor); |
| 242 | } |
| 243 | |
| 244 | bool SkColorShader::setContext(const SkBitmap& device, const SkPaint& paint, |
| 245 | const SkMatrix& matrix) { |
| 246 | if (!this->INHERITED::setContext(device, paint, matrix)) { |
| 247 | return false; |
| 248 | } |
| 249 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 250 | unsigned a; |
vandebo@chromium.org | d3ae779 | 2011-02-24 00:21:06 +0000 | [diff] [blame] | 251 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 252 | if (fInheritColor) { |
vandebo@chromium.org | d3ae779 | 2011-02-24 00:21:06 +0000 | [diff] [blame] | 253 | fColor = paint.getColor(); |
| 254 | a = SkColorGetA(fColor); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 255 | } else { |
vandebo@chromium.org | d3ae779 | 2011-02-24 00:21:06 +0000 | [diff] [blame] | 256 | a = SkAlphaMul(SkColorGetA(fColor), SkAlpha255To256(paint.getAlpha())); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 257 | } |
| 258 | |
vandebo@chromium.org | d3ae779 | 2011-02-24 00:21:06 +0000 | [diff] [blame] | 259 | unsigned r = SkColorGetR(fColor); |
| 260 | unsigned g = SkColorGetG(fColor); |
| 261 | unsigned b = SkColorGetB(fColor); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 262 | |
| 263 | // we want this before we apply any alpha |
| 264 | fColor16 = SkPack888ToRGB16(r, g, b); |
| 265 | |
| 266 | if (a != 255) { |
reed@android.com | 8f07338 | 2010-03-11 21:56:16 +0000 | [diff] [blame] | 267 | r = SkMulDiv255Round(r, a); |
| 268 | g = SkMulDiv255Round(g, a); |
| 269 | b = SkMulDiv255Round(b, a); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 270 | } |
| 271 | fPMColor = SkPackARGB32(a, r, g, b); |
| 272 | |
reed@android.com | 8f07338 | 2010-03-11 21:56:16 +0000 | [diff] [blame] | 273 | fFlags = kConstInY32_Flag; |
reed@android.com | 5b81535 | 2010-03-11 22:20:43 +0000 | [diff] [blame] | 274 | if (255 == a) { |
reed@android.com | 5119bdb | 2009-06-12 21:27:03 +0000 | [diff] [blame] | 275 | fFlags |= kOpaqueAlpha_Flag; |
reed@android.com | 5b81535 | 2010-03-11 22:20:43 +0000 | [diff] [blame] | 276 | if (paint.isDither() == false) { |
| 277 | fFlags |= kHasSpan16_Flag; |
| 278 | } |
reed@android.com | 5119bdb | 2009-06-12 21:27:03 +0000 | [diff] [blame] | 279 | } |
| 280 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 281 | return true; |
| 282 | } |
| 283 | |
| 284 | void SkColorShader::shadeSpan(int x, int y, SkPMColor span[], int count) { |
| 285 | sk_memset32(span, fPMColor, count); |
| 286 | } |
| 287 | |
| 288 | void SkColorShader::shadeSpan16(int x, int y, uint16_t span[], int count) { |
| 289 | sk_memset16(span, fColor16, count); |
| 290 | } |
| 291 | |
| 292 | void SkColorShader::shadeSpanAlpha(int x, int y, uint8_t alpha[], int count) { |
| 293 | memset(alpha, SkGetPackedA32(fPMColor), count); |
| 294 | } |
| 295 | |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 296 | // if we had a asAColor method, that would be more efficient... |
| 297 | SkShader::BitmapType SkColorShader::asABitmap(SkBitmap* bitmap, SkMatrix* matrix, |
rileya@google.com | 91f319c | 2012-07-25 17:18:31 +0000 | [diff] [blame] | 298 | TileMode modes[]) const { |
reed@google.com | 2be9e8b | 2011-07-06 21:18:09 +0000 | [diff] [blame] | 299 | return kNone_BitmapType; |
reed@android.com | f2b98d6 | 2010-12-20 18:26:13 +0000 | [diff] [blame] | 300 | } |
| 301 | |
vandebo@chromium.org | d3ae779 | 2011-02-24 00:21:06 +0000 | [diff] [blame] | 302 | SkShader::GradientType SkColorShader::asAGradient(GradientInfo* info) const { |
| 303 | if (info) { |
| 304 | if (info->fColors && info->fColorCount >= 1) { |
| 305 | info->fColors[0] = fColor; |
| 306 | } |
| 307 | info->fColorCount = 1; |
| 308 | info->fTileMode = SkShader::kRepeat_TileMode; |
| 309 | } |
| 310 | return kColor_GradientType; |
| 311 | } |
reed@google.com | 37a2012 | 2011-07-05 18:54:12 +0000 | [diff] [blame] | 312 | |
robertphillips@google.com | 76f9e93 | 2013-01-15 20:17:47 +0000 | [diff] [blame] | 313 | #ifdef SK_DEVELOPER |
| 314 | void SkColorShader::toString(SkString* str) const { |
| 315 | str->append("SkColorShader: ("); |
| 316 | |
| 317 | if (fInheritColor) { |
| 318 | str->append("Color: inherited from paint"); |
| 319 | } else { |
| 320 | str->append("Color: "); |
| 321 | str->appendHex(fColor); |
| 322 | } |
| 323 | |
| 324 | this->INHERITED::toString(str); |
| 325 | |
| 326 | str->append(")"); |
| 327 | } |
| 328 | #endif |
| 329 | |
reed@google.com | 37a2012 | 2011-07-05 18:54:12 +0000 | [diff] [blame] | 330 | /////////////////////////////////////////////////////////////////////////////// |
| 331 | |
| 332 | #include "SkEmptyShader.h" |
| 333 | |
reed@google.com | 37a2012 | 2011-07-05 18:54:12 +0000 | [diff] [blame] | 334 | uint32_t SkEmptyShader::getFlags() { return 0; } |
| 335 | uint8_t SkEmptyShader::getSpan16Alpha() const { return 0; } |
reed@google.com | 59ccef6 | 2011-12-07 14:59:50 +0000 | [diff] [blame] | 336 | |
| 337 | bool SkEmptyShader::setContext(const SkBitmap&, const SkPaint&, |
| 338 | const SkMatrix&) { return false; } |
| 339 | |
| 340 | void SkEmptyShader::shadeSpan(int x, int y, SkPMColor span[], int count) { |
tomhudson@google.com | 0c00f21 | 2011-12-28 14:59:50 +0000 | [diff] [blame] | 341 | SkDEBUGFAIL("should never get called, since setContext() returned false"); |
reed@google.com | 37a2012 | 2011-07-05 18:54:12 +0000 | [diff] [blame] | 342 | } |
reed@google.com | 59ccef6 | 2011-12-07 14:59:50 +0000 | [diff] [blame] | 343 | |
| 344 | void SkEmptyShader::shadeSpan16(int x, int y, uint16_t span[], int count) { |
tomhudson@google.com | 0c00f21 | 2011-12-28 14:59:50 +0000 | [diff] [blame] | 345 | SkDEBUGFAIL("should never get called, since setContext() returned false"); |
reed@google.com | 59ccef6 | 2011-12-07 14:59:50 +0000 | [diff] [blame] | 346 | } |
| 347 | |
| 348 | void SkEmptyShader::shadeSpanAlpha(int x, int y, uint8_t alpha[], int count) { |
tomhudson@google.com | 0c00f21 | 2011-12-28 14:59:50 +0000 | [diff] [blame] | 349 | SkDEBUGFAIL("should never get called, since setContext() returned false"); |
reed@google.com | 59ccef6 | 2011-12-07 14:59:50 +0000 | [diff] [blame] | 350 | } |
robertphillips@google.com | 76f9e93 | 2013-01-15 20:17:47 +0000 | [diff] [blame] | 351 | |
| 352 | #ifdef SK_DEVELOPER |
| 353 | void SkEmptyShader::toString(SkString* str) const { |
| 354 | str->append("SkEmptyShader: ("); |
| 355 | |
| 356 | this->INHERITED::toString(str); |
| 357 | |
| 358 | str->append(")"); |
| 359 | } |
| 360 | #endif |