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1 | 1 |
2 /* | 2 /* |
3 * Copyright 2006 The Android Open Source Project | 3 * Copyright 2006 The Android Open Source Project |
4 * | 4 * |
5 * Use of this source code is governed by a BSD-style license that can be | 5 * Use of this source code is governed by a BSD-style license that can be |
6 * found in the LICENSE file. | 6 * found in the LICENSE file. |
7 */ | 7 */ |
8 | 8 |
9 | 9 |
10 #include "SkXfermode.h" | 10 #include "SkXfermode.h" |
11 #include "SkColorPriv.h" | 11 #include "SkColorPriv.h" |
12 #include "SkFlattenableBuffers.h" | 12 #include "SkFlattenableBuffers.h" |
13 #include "SkMathPriv.h" | 13 #include "SkMathPriv.h" |
14 #include "SkString.h" | 14 #include "SkString.h" |
| 15 #include "SkValidationUtils.h" |
15 | 16 |
16 SK_DEFINE_INST_COUNT(SkXfermode) | 17 SK_DEFINE_INST_COUNT(SkXfermode) |
17 | 18 |
18 #define SkAlphaMulAlpha(a, b) SkMulDiv255Round(a, b) | 19 #define SkAlphaMulAlpha(a, b) SkMulDiv255Round(a, b) |
19 | 20 |
20 #if 0 | 21 #if 0 |
21 // idea for higher precision blends in xfer procs (and slightly faster) | 22 // idea for higher precision blends in xfer procs (and slightly faster) |
22 // see DstATop as a probable caller | 23 // see DstATop as a probable caller |
23 static U8CPU mulmuldiv255round(U8CPU a, U8CPU b, U8CPU c, U8CPU d) { | 24 static U8CPU mulmuldiv255round(U8CPU a, U8CPU b, U8CPU c, U8CPU d) { |
24 SkASSERT(a <= 255); | 25 SkASSERT(a <= 255); |
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1402 return false; | 1403 return false; |
1403 } | 1404 } |
1404 #endif | 1405 #endif |
1405 | 1406 |
1406 SK_DEVELOPER_TO_STRING() | 1407 SK_DEVELOPER_TO_STRING() |
1407 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkProcCoeffXfermode) | 1408 SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkProcCoeffXfermode) |
1408 | 1409 |
1409 protected: | 1410 protected: |
1410 SkProcCoeffXfermode(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) { | 1411 SkProcCoeffXfermode(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) { |
1411 fMode = (SkXfermode::Mode)buffer.read32(); | 1412 fMode = (SkXfermode::Mode)buffer.read32(); |
1412 | 1413 bool modeIsValid = SkIsValidMode(fMode); |
1413 const ProcCoeff& rec = gProcCoeffs[fMode]; | 1414 if (modeIsValid) { |
1414 // these may be valid, or may be CANNOT_USE_COEFF | 1415 const ProcCoeff& rec = gProcCoeffs[fMode]; |
1415 fSrcCoeff = rec.fSC; | 1416 // these may be valid, or may be CANNOT_USE_COEFF |
1416 fDstCoeff = rec.fDC; | 1417 fSrcCoeff = rec.fSC; |
1417 // now update our function-ptr in the super class | 1418 fDstCoeff = rec.fDC; |
1418 this->INHERITED::setProc(rec.fProc); | 1419 // now update our function-ptr in the super class |
| 1420 this->INHERITED::setProc(rec.fProc); |
| 1421 } else { |
| 1422 fSrcCoeff = fDstCoeff = CANNOT_USE_COEFF; |
| 1423 } |
| 1424 buffer.validate(modeIsValid && |
| 1425 (SkIsValidCoeff(fSrcCoeff) || (fSrcCoeff == CANNOT_USE_C
OEFF)) && |
| 1426 (SkIsValidCoeff(fDstCoeff) || (fDstCoeff == CANNOT_USE_C
OEFF))); |
1419 } | 1427 } |
1420 | 1428 |
1421 virtual void flatten(SkFlattenableWriteBuffer& buffer) const SK_OVERRIDE { | 1429 virtual void flatten(SkFlattenableWriteBuffer& buffer) const SK_OVERRIDE { |
1422 this->INHERITED::flatten(buffer); | 1430 this->INHERITED::flatten(buffer); |
1423 buffer.write32(fMode); | 1431 buffer.write32(fMode); |
1424 } | 1432 } |
1425 | 1433 |
1426 private: | 1434 private: |
1427 Mode fMode; | 1435 Mode fMode; |
1428 Coeff fSrcCoeff, fDstCoeff; | 1436 Coeff fSrcCoeff, fDstCoeff; |
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1981 return proc16; | 1989 return proc16; |
1982 } | 1990 } |
1983 | 1991 |
1984 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkXfermode) | 1992 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkXfermode) |
1985 SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkProcCoeffXfermode) | 1993 SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkProcCoeffXfermode) |
1986 SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkClearXfermode) | 1994 SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkClearXfermode) |
1987 SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkSrcXfermode) | 1995 SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkSrcXfermode) |
1988 SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkDstInXfermode) | 1996 SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkDstInXfermode) |
1989 SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkDstOutXfermode) | 1997 SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkDstOutXfermode) |
1990 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END | 1998 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END |
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