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 | #include "SkColorFilter.h" |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 9 | #include "SkReadBuffer.h" |
bungeman | d3ebb48 | 2015-08-05 13:57:49 -0700 | [diff] [blame] | 10 | #include "SkRefCnt.h" |
reed | 5bd055c | 2015-03-01 19:16:38 -0800 | [diff] [blame] | 11 | #include "SkString.h" |
bungeman | d3ebb48 | 2015-08-05 13:57:49 -0700 | [diff] [blame] | 12 | #include "SkTDArray.h" |
| 13 | #include "SkUnPreMultiply.h" |
reed | db873d8 | 2015-03-01 19:53:47 -0800 | [diff] [blame] | 14 | #include "SkWriteBuffer.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 15 | |
bsalomon | e25eea4 | 2015-09-29 06:38:55 -0700 | [diff] [blame] | 16 | #if SK_SUPPORT_GPU |
| 17 | #include "GrFragmentProcessor.h" |
| 18 | #endif |
bungeman | d3ebb48 | 2015-08-05 13:57:49 -0700 | [diff] [blame] | 19 | |
reed@google.com | bada644 | 2012-12-17 20:21:44 +0000 | [diff] [blame] | 20 | bool SkColorFilter::asColorMode(SkColor* color, SkXfermode::Mode* mode) const { |
reed@google.com | 43c50c8 | 2011-04-14 15:50:52 +0000 | [diff] [blame] | 21 | return false; |
| 22 | } |
| 23 | |
reed@google.com | bada644 | 2012-12-17 20:21:44 +0000 | [diff] [blame] | 24 | bool SkColorFilter::asColorMatrix(SkScalar matrix[20]) const { |
senorblanco@chromium.org | e5ff3ce | 2011-12-20 20:58:18 +0000 | [diff] [blame] | 25 | return false; |
| 26 | } |
| 27 | |
bsalomon@google.com | b2ad101 | 2012-10-17 15:00:32 +0000 | [diff] [blame] | 28 | bool SkColorFilter::asComponentTable(SkBitmap*) const { |
reed@google.com | 7191840 | 2012-01-05 17:24:35 +0000 | [diff] [blame] | 29 | return false; |
| 30 | } |
| 31 | |
reed@google.com | bada644 | 2012-12-17 20:21:44 +0000 | [diff] [blame] | 32 | SkColor SkColorFilter::filterColor(SkColor c) const { |
reed@google.com | 6b7aee3 | 2011-04-19 18:36:09 +0000 | [diff] [blame] | 33 | SkPMColor dst, src = SkPreMultiplyColor(c); |
| 34 | this->filterSpan(&src, 1, &dst); |
| 35 | return SkUnPreMultiply::PMColorToColor(dst); |
| 36 | } |
| 37 | |
reed | 6d3cef9 | 2016-01-22 01:04:29 -0800 | [diff] [blame^] | 38 | void SkColorFilter::filterSpan4f(const SkPM4f[], int count, SkPM4f[]) const { |
| 39 | SkASSERT(false && "filterSpan4f called but not implemented"); |
| 40 | } |
| 41 | |
reed | db873d8 | 2015-03-01 19:53:47 -0800 | [diff] [blame] | 42 | /////////////////////////////////////////////////////////////////////////////////////////////////// |
| 43 | |
reed | dc81222 | 2015-03-05 07:21:02 -0800 | [diff] [blame] | 44 | /* |
| 45 | * Since colorfilters may be used on the GPU backend, and in that case we may string together |
| 46 | * many GrFragmentProcessors, we might exceed some internal instruction/resource limit. |
| 47 | * |
| 48 | * Since we don't yet know *what* those limits might be when we construct the final shader, |
| 49 | * we just set an arbitrary limit during construction. If later we find smarter ways to know what |
| 50 | * the limnits are, we can change this constant (or remove it). |
| 51 | */ |
| 52 | #define SK_MAX_COMPOSE_COLORFILTER_COUNT 4 |
| 53 | |
reed | db873d8 | 2015-03-01 19:53:47 -0800 | [diff] [blame] | 54 | class SkComposeColorFilter : public SkColorFilter { |
| 55 | public: |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 56 | uint32_t getFlags() const override { |
reed | db873d8 | 2015-03-01 19:53:47 -0800 | [diff] [blame] | 57 | // Can only claim alphaunchanged and 16bit support if both our proxys do. |
| 58 | return fOuter->getFlags() & fInner->getFlags(); |
| 59 | } |
| 60 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 61 | void filterSpan(const SkPMColor shader[], int count, SkPMColor result[]) const override { |
reed | db873d8 | 2015-03-01 19:53:47 -0800 | [diff] [blame] | 62 | fInner->filterSpan(shader, count, result); |
| 63 | fOuter->filterSpan(result, count, result); |
| 64 | } |
| 65 | |
reed | db873d8 | 2015-03-01 19:53:47 -0800 | [diff] [blame] | 66 | #ifndef SK_IGNORE_TO_STRING |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 67 | void toString(SkString* str) const override { |
reed | db873d8 | 2015-03-01 19:53:47 -0800 | [diff] [blame] | 68 | SkString outerS, innerS; |
| 69 | fOuter->toString(&outerS); |
| 70 | fInner->toString(&innerS); |
| 71 | str->appendf("SkComposeColorFilter: outer(%s) inner(%s)", outerS.c_str(), innerS.c_str()); |
| 72 | } |
| 73 | #endif |
| 74 | |
reed | db873d8 | 2015-03-01 19:53:47 -0800 | [diff] [blame] | 75 | #if SK_SUPPORT_GPU |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 76 | const GrFragmentProcessor* asFragmentProcessor(GrContext* context) const override { |
| 77 | SkAutoTUnref<const GrFragmentProcessor> innerFP(fInner->asFragmentProcessor(context)); |
| 78 | SkAutoTUnref<const GrFragmentProcessor> outerFP(fOuter->asFragmentProcessor(context)); |
bsalomon | e25eea4 | 2015-09-29 06:38:55 -0700 | [diff] [blame] | 79 | if (!innerFP || !outerFP) { |
| 80 | return nullptr; |
| 81 | } |
| 82 | const GrFragmentProcessor* series[] = { innerFP, outerFP }; |
| 83 | return GrFragmentProcessor::RunInSeries(series, 2); |
reed | cff10b2 | 2015-03-03 06:41:45 -0800 | [diff] [blame] | 84 | } |
reed | db873d8 | 2015-03-01 19:53:47 -0800 | [diff] [blame] | 85 | #endif |
| 86 | |
| 87 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkComposeColorFilter) |
| 88 | |
| 89 | protected: |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 90 | void flatten(SkWriteBuffer& buffer) const override { |
reed | db873d8 | 2015-03-01 19:53:47 -0800 | [diff] [blame] | 91 | buffer.writeFlattenable(fOuter); |
| 92 | buffer.writeFlattenable(fInner); |
| 93 | } |
| 94 | |
| 95 | private: |
reed | dc81222 | 2015-03-05 07:21:02 -0800 | [diff] [blame] | 96 | SkComposeColorFilter(SkColorFilter* outer, SkColorFilter* inner, int composedFilterCount) |
| 97 | : fOuter(SkRef(outer)) |
| 98 | , fInner(SkRef(inner)) |
| 99 | , fComposedFilterCount(composedFilterCount) |
| 100 | { |
| 101 | SkASSERT(composedFilterCount >= 2); |
| 102 | SkASSERT(composedFilterCount <= SK_MAX_COMPOSE_COLORFILTER_COUNT); |
| 103 | } |
| 104 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 105 | int privateComposedFilterCount() const override { |
reed | dc81222 | 2015-03-05 07:21:02 -0800 | [diff] [blame] | 106 | return fComposedFilterCount; |
| 107 | } |
| 108 | |
reed | db873d8 | 2015-03-01 19:53:47 -0800 | [diff] [blame] | 109 | SkAutoTUnref<SkColorFilter> fOuter; |
| 110 | SkAutoTUnref<SkColorFilter> fInner; |
reed | dc81222 | 2015-03-05 07:21:02 -0800 | [diff] [blame] | 111 | const int fComposedFilterCount; |
reed | db873d8 | 2015-03-01 19:53:47 -0800 | [diff] [blame] | 112 | |
| 113 | friend class SkColorFilter; |
| 114 | |
| 115 | typedef SkColorFilter INHERITED; |
| 116 | }; |
| 117 | |
| 118 | SkFlattenable* SkComposeColorFilter::CreateProc(SkReadBuffer& buffer) { |
| 119 | SkAutoTUnref<SkColorFilter> outer(buffer.readColorFilter()); |
| 120 | SkAutoTUnref<SkColorFilter> inner(buffer.readColorFilter()); |
| 121 | return CreateComposeFilter(outer, inner); |
| 122 | } |
| 123 | |
reed | 8a8d841 | 2015-03-02 13:46:03 -0800 | [diff] [blame] | 124 | /////////////////////////////////////////////////////////////////////////////////////////////////// |
| 125 | |
reed | db873d8 | 2015-03-01 19:53:47 -0800 | [diff] [blame] | 126 | SkColorFilter* SkColorFilter::CreateComposeFilter(SkColorFilter* outer, SkColorFilter* inner) { |
| 127 | if (!outer) { |
| 128 | return SkSafeRef(inner); |
| 129 | } |
| 130 | if (!inner) { |
| 131 | return SkSafeRef(outer); |
| 132 | } |
reed | 8a8d841 | 2015-03-02 13:46:03 -0800 | [diff] [blame] | 133 | |
| 134 | // Give the subclass a shot at a more optimal composition... |
| 135 | SkColorFilter* composition = outer->newComposed(inner); |
reed | dc81222 | 2015-03-05 07:21:02 -0800 | [diff] [blame] | 136 | if (composition) { |
| 137 | return composition; |
reed | 8a8d841 | 2015-03-02 13:46:03 -0800 | [diff] [blame] | 138 | } |
reed | dc81222 | 2015-03-05 07:21:02 -0800 | [diff] [blame] | 139 | |
| 140 | int count = inner->privateComposedFilterCount() + outer->privateComposedFilterCount(); |
| 141 | if (count > SK_MAX_COMPOSE_COLORFILTER_COUNT) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 142 | return nullptr; |
reed | dc81222 | 2015-03-05 07:21:02 -0800 | [diff] [blame] | 143 | } |
halcanary | 385fe4d | 2015-08-26 13:07:48 -0700 | [diff] [blame] | 144 | return new SkComposeColorFilter(outer, inner, count); |
reed | db873d8 | 2015-03-01 19:53:47 -0800 | [diff] [blame] | 145 | } |
| 146 | |
reed | c7141eb | 2016-01-11 13:08:59 -0800 | [diff] [blame] | 147 | #include "SkModeColorFilter.h" |
| 148 | |
reed | db873d8 | 2015-03-01 19:53:47 -0800 | [diff] [blame] | 149 | SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkColorFilter) |
| 150 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkComposeColorFilter) |
reed | c7141eb | 2016-01-11 13:08:59 -0800 | [diff] [blame] | 151 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkModeColorFilter) |
reed | db873d8 | 2015-03-01 19:53:47 -0800 | [diff] [blame] | 152 | SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END |
| 153 | |