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1 /* | 1 /* |
2 * Copyright 2013 Google Inc. | 2 * Copyright 2013 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #include "SkArithmeticMode.h" | 8 #include "SkArithmeticMode.h" |
9 #include "SkColorPriv.h" | 9 #include "SkColorPriv.h" |
10 #include "SkReadBuffer.h" | 10 #include "SkReadBuffer.h" |
11 #include "SkWriteBuffer.h" | 11 #include "SkWriteBuffer.h" |
12 #include "SkString.h" | 12 #include "SkString.h" |
13 #include "SkUnPreMultiply.h" | 13 #include "SkUnPreMultiply.h" |
14 #include "SkValue.h" | 14 #include "SkValue.h" |
15 #include "SkValueKeys.h" | 15 #include "SkValueKeys.h" |
16 #if SK_SUPPORT_GPU | 16 #if SK_SUPPORT_GPU |
17 #include "SkArithmeticMode_gpu.h" | 17 #include "SkArithmeticMode_gpu.h" |
18 #endif | 18 #endif |
19 | 19 |
20 static const bool gUseUnpremul = false; | 20 static const bool gUseUnpremul = false; |
21 | 21 |
22 class SkArithmeticMode_scalar : public SkXfermode { | 22 class SkArithmeticMode_scalar : public SkXfermode { |
23 public: | 23 public: |
24 static SkArithmeticMode_scalar* Create(SkScalar k1, SkScalar k2, SkScalar k3
, SkScalar k4, | 24 static SkXfermode* Create(SkScalar k1, SkScalar k2, SkScalar k3, SkScalar k4
, |
25 bool enforcePMColor) { | 25 bool enforcePMColor) { |
| 26 if (SkScalarNearlyZero(k1) && SkScalarNearlyEqual(k2, SK_Scalar1) && |
| 27 SkScalarNearlyZero(k3) && SkScalarNearlyZero(k4)) { |
| 28 return SkXfermode::Create(SkXfermode::kSrc_Mode); |
| 29 } else if (SkScalarNearlyZero(k1) && SkScalarNearlyZero(k2) && |
| 30 SkScalarNearlyEqual(k3, SK_Scalar1) && SkScalarNearlyZero(k4)
) { |
| 31 return SkXfermode::Create(SkXfermode::kDst_Mode); |
| 32 } |
| 33 |
26 return new SkArithmeticMode_scalar(k1, k2, k3, k4, enforcePMColor); | 34 return new SkArithmeticMode_scalar(k1, k2, k3, k4, enforcePMColor); |
27 } | 35 } |
28 | 36 |
29 virtual void xfer32(SkPMColor dst[], const SkPMColor src[], int count, | 37 virtual void xfer32(SkPMColor dst[], const SkPMColor src[], int count, |
30 const SkAlpha aa[]) const override; | 38 const SkAlpha aa[]) const override; |
31 | 39 |
32 SK_TO_STRING_OVERRIDE() | 40 SK_TO_STRING_OVERRIDE() |
33 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkArithmeticMode_scalar) | 41 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkArithmeticMode_scalar) |
34 | 42 |
35 #if SK_SUPPORT_GPU | 43 #if SK_SUPPORT_GPU |
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271 fEnforcePMColor); | 279 fEnforcePMColor); |
272 } | 280 } |
273 return true; | 281 return true; |
274 } | 282 } |
275 | 283 |
276 #endif | 284 #endif |
277 | 285 |
278 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkArithmeticMode) | 286 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkArithmeticMode) |
279 SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkArithmeticMode_scalar) | 287 SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkArithmeticMode_scalar) |
280 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END | 288 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END |
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