commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2014 Google Inc. |
| 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 | |
| 8 | #include "GrConvexPolyEffect.h" |
reed | 026beb5 | 2015-06-10 14:23:15 -0700 | [diff] [blame] | 9 | #include "SkPathPriv.h" |
bsalomon | 7888de0 | 2016-03-28 15:04:45 -0700 | [diff] [blame] | 10 | #include "effects/GrConstColorProcessor.h" |
egdaniel | 64c4728 | 2015-11-13 06:54:19 -0800 | [diff] [blame] | 11 | #include "glsl/GrGLSLFragmentProcessor.h" |
egdaniel | 2d721d3 | 2015-11-11 13:06:05 -0800 | [diff] [blame] | 12 | #include "glsl/GrGLSLFragmentShaderBuilder.h" |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 13 | #include "glsl/GrGLSLProgramDataManager.h" |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 14 | #include "glsl/GrGLSLUniformHandler.h" |
Brian Salomon | 94efbf5 | 2016-11-29 13:43:05 -0500 | [diff] [blame] | 15 | #include "../private/GrGLSL.h" |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 16 | |
commit-bot@chromium.org | f053980 | 2014-02-08 19:31:05 +0000 | [diff] [blame] | 17 | ////////////////////////////////////////////////////////////////////////////// |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 18 | class AARectEffect : public GrFragmentProcessor { |
commit-bot@chromium.org | f053980 | 2014-02-08 19:31:05 +0000 | [diff] [blame] | 19 | public: |
commit-bot@chromium.org | f053980 | 2014-02-08 19:31:05 +0000 | [diff] [blame] | 20 | const SkRect& getRect() const { return fRect; } |
| 21 | |
bungeman | 06ca8ec | 2016-06-09 08:01:03 -0700 | [diff] [blame] | 22 | static sk_sp<GrFragmentProcessor> Make(GrPrimitiveEdgeType edgeType, const SkRect& rect) { |
| 23 | return sk_sp<GrFragmentProcessor>(new AARectEffect(edgeType, rect)); |
commit-bot@chromium.org | f053980 | 2014-02-08 19:31:05 +0000 | [diff] [blame] | 24 | } |
| 25 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 26 | GrPrimitiveEdgeType getEdgeType() const { return fEdgeType; } |
commit-bot@chromium.org | d85f32c | 2014-02-28 14:43:26 +0000 | [diff] [blame] | 27 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 28 | const char* name() const override { return "AARect"; } |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 29 | |
Brian Salomon | 94efbf5 | 2016-11-29 13:43:05 -0500 | [diff] [blame] | 30 | void onGetGLSLProcessorKey(const GrShaderCaps&, GrProcessorKeyBuilder*) const override; |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 31 | |
commit-bot@chromium.org | f053980 | 2014-02-08 19:31:05 +0000 | [diff] [blame] | 32 | private: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 33 | AARectEffect(GrPrimitiveEdgeType edgeType, const SkRect& rect) |
Brian Salomon | f3b995b | 2017-02-15 10:22:23 -0500 | [diff] [blame] | 34 | : INHERITED(kCompatibleWithCoverageAsAlpha_OptimizationFlag) |
| 35 | , fRect(rect) |
| 36 | , fEdgeType(edgeType) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 37 | this->initClassID<AARectEffect>(); |
commit-bot@chromium.org | f053980 | 2014-02-08 19:31:05 +0000 | [diff] [blame] | 38 | } |
| 39 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 40 | GrGLSLFragmentProcessor* onCreateGLSLInstance() const override; |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 41 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 42 | bool onIsEqual(const GrFragmentProcessor& other) const override { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 43 | const AARectEffect& aare = other.cast<AARectEffect>(); |
commit-bot@chromium.org | f053980 | 2014-02-08 19:31:05 +0000 | [diff] [blame] | 44 | return fRect == aare.fRect; |
| 45 | } |
| 46 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 47 | SkRect fRect; |
| 48 | GrPrimitiveEdgeType fEdgeType; |
commit-bot@chromium.org | d85f32c | 2014-02-28 14:43:26 +0000 | [diff] [blame] | 49 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 50 | typedef GrFragmentProcessor INHERITED; |
commit-bot@chromium.org | f053980 | 2014-02-08 19:31:05 +0000 | [diff] [blame] | 51 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 52 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | f053980 | 2014-02-08 19:31:05 +0000 | [diff] [blame] | 53 | |
| 54 | }; |
| 55 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 56 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(AARectEffect); |
commit-bot@chromium.org | f053980 | 2014-02-08 19:31:05 +0000 | [diff] [blame] | 57 | |
Hal Canary | 6f6961e | 2017-01-31 13:50:44 -0500 | [diff] [blame] | 58 | #if GR_TEST_UTILS |
bungeman | 06ca8ec | 2016-06-09 08:01:03 -0700 | [diff] [blame] | 59 | sk_sp<GrFragmentProcessor> AARectEffect::TestCreate(GrProcessorTestData* d) { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 60 | SkRect rect = SkRect::MakeLTRB(d->fRandom->nextSScalar1(), |
| 61 | d->fRandom->nextSScalar1(), |
| 62 | d->fRandom->nextSScalar1(), |
| 63 | d->fRandom->nextSScalar1()); |
bungeman | 06ca8ec | 2016-06-09 08:01:03 -0700 | [diff] [blame] | 64 | sk_sp<GrFragmentProcessor> fp; |
commit-bot@chromium.org | cabf4b2 | 2014-03-05 18:27:43 +0000 | [diff] [blame] | 65 | do { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 66 | GrPrimitiveEdgeType edgeType = static_cast<GrPrimitiveEdgeType>( |
| 67 | d->fRandom->nextULessThan(kGrProcessorEdgeTypeCnt)); |
commit-bot@chromium.org | cabf4b2 | 2014-03-05 18:27:43 +0000 | [diff] [blame] | 68 | |
bungeman | 06ca8ec | 2016-06-09 08:01:03 -0700 | [diff] [blame] | 69 | fp = AARectEffect::Make(edgeType, rect); |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 70 | } while (nullptr == fp); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 71 | return fp; |
commit-bot@chromium.org | f053980 | 2014-02-08 19:31:05 +0000 | [diff] [blame] | 72 | } |
Hal Canary | 6f6961e | 2017-01-31 13:50:44 -0500 | [diff] [blame] | 73 | #endif |
commit-bot@chromium.org | f053980 | 2014-02-08 19:31:05 +0000 | [diff] [blame] | 74 | |
| 75 | ////////////////////////////////////////////////////////////////////////////// |
| 76 | |
egdaniel | 64c4728 | 2015-11-13 06:54:19 -0800 | [diff] [blame] | 77 | class GLAARectEffect : public GrGLSLFragmentProcessor { |
commit-bot@chromium.org | f053980 | 2014-02-08 19:31:05 +0000 | [diff] [blame] | 78 | public: |
robertphillips | 9cdb992 | 2016-02-03 12:25:40 -0800 | [diff] [blame] | 79 | GLAARectEffect() { |
| 80 | fPrevRect.fLeft = SK_ScalarNaN; |
| 81 | } |
commit-bot@chromium.org | f053980 | 2014-02-08 19:31:05 +0000 | [diff] [blame] | 82 | |
robertphillips | 9cdb992 | 2016-02-03 12:25:40 -0800 | [diff] [blame] | 83 | void emitCode(EmitArgs&) override; |
commit-bot@chromium.org | f053980 | 2014-02-08 19:31:05 +0000 | [diff] [blame] | 84 | |
Brian Salomon | 94efbf5 | 2016-11-29 13:43:05 -0500 | [diff] [blame] | 85 | static inline void GenKey(const GrProcessor&, const GrShaderCaps&, GrProcessorKeyBuilder*); |
commit-bot@chromium.org | f053980 | 2014-02-08 19:31:05 +0000 | [diff] [blame] | 86 | |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 87 | protected: |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 88 | void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override; |
commit-bot@chromium.org | f053980 | 2014-02-08 19:31:05 +0000 | [diff] [blame] | 89 | |
| 90 | private: |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 91 | GrGLSLProgramDataManager::UniformHandle fRectUniform; |
robertphillips | bf536af | 2016-02-04 06:11:53 -0800 | [diff] [blame] | 92 | SkRect fPrevRect; |
| 93 | |
egdaniel | 64c4728 | 2015-11-13 06:54:19 -0800 | [diff] [blame] | 94 | typedef GrGLSLFragmentProcessor INHERITED; |
commit-bot@chromium.org | f053980 | 2014-02-08 19:31:05 +0000 | [diff] [blame] | 95 | }; |
| 96 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 97 | void GLAARectEffect::emitCode(EmitArgs& args) { |
| 98 | const AARectEffect& aare = args.fFp.cast<AARectEffect>(); |
commit-bot@chromium.org | f053980 | 2014-02-08 19:31:05 +0000 | [diff] [blame] | 99 | const char *rectName; |
commit-bot@chromium.org | d85f32c | 2014-02-28 14:43:26 +0000 | [diff] [blame] | 100 | // The rect uniform's xyzw refer to (left + 0.5, top + 0.5, right - 0.5, bottom - 0.5), |
| 101 | // respectively. |
cdalton | 5e58cee | 2016-02-11 12:49:47 -0800 | [diff] [blame] | 102 | fRectUniform = args.fUniformHandler->addUniform(kFragment_GrShaderFlag, |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 103 | kVec4f_GrSLType, |
| 104 | kDefault_GrSLPrecision, |
| 105 | "rect", |
| 106 | &rectName); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 107 | |
cdalton | 8528541 | 2016-02-18 12:37:07 -0800 | [diff] [blame] | 108 | GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 109 | if (GrProcessorEdgeTypeIsAA(aare.getEdgeType())) { |
commit-bot@chromium.org | d85f32c | 2014-02-28 14:43:26 +0000 | [diff] [blame] | 110 | // The amount of coverage removed in x and y by the edges is computed as a pair of negative |
| 111 | // numbers, xSub and ySub. |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 112 | fragBuilder->codeAppend("\t\tfloat xSub, ySub;\n"); |
Ethan Nicholas | 3865711 | 2017-02-09 17:01:22 -0500 | [diff] [blame] | 113 | fragBuilder->codeAppendf("\t\txSub = min(sk_FragCoord.x - %s.x, 0.0);\n", rectName); |
| 114 | fragBuilder->codeAppendf("\t\txSub += min(%s.z - sk_FragCoord.x, 0.0);\n", rectName); |
| 115 | fragBuilder->codeAppendf("\t\tySub = min(sk_FragCoord.y - %s.y, 0.0);\n", rectName); |
| 116 | fragBuilder->codeAppendf("\t\tySub += min(%s.w - sk_FragCoord.y, 0.0);\n", rectName); |
commit-bot@chromium.org | d85f32c | 2014-02-28 14:43:26 +0000 | [diff] [blame] | 117 | // Now compute coverage in x and y and multiply them to get the fraction of the pixel |
| 118 | // covered. |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 119 | fragBuilder->codeAppendf("\t\tfloat alpha = (1.0 + max(xSub, -1.0)) * (1.0 + max(ySub, -1.0));\n"); |
commit-bot@chromium.org | d85f32c | 2014-02-28 14:43:26 +0000 | [diff] [blame] | 120 | } else { |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 121 | fragBuilder->codeAppendf("\t\tfloat alpha = 1.0;\n"); |
Ethan Nicholas | 3865711 | 2017-02-09 17:01:22 -0500 | [diff] [blame] | 122 | fragBuilder->codeAppendf("\t\talpha *= (sk_FragCoord.x - %s.x) > -0.5 ? 1.0 : 0.0;\n", |
| 123 | rectName); |
| 124 | fragBuilder->codeAppendf("\t\talpha *= (%s.z - sk_FragCoord.x) > -0.5 ? 1.0 : 0.0;\n", |
| 125 | rectName); |
| 126 | fragBuilder->codeAppendf("\t\talpha *= (sk_FragCoord.y - %s.y) > -0.5 ? 1.0 : 0.0;\n", |
| 127 | rectName); |
| 128 | fragBuilder->codeAppendf("\t\talpha *= (%s.w - sk_FragCoord.y) > -0.5 ? 1.0 : 0.0;\n", |
| 129 | rectName); |
commit-bot@chromium.org | d85f32c | 2014-02-28 14:43:26 +0000 | [diff] [blame] | 130 | } |
commit-bot@chromium.org | f053980 | 2014-02-08 19:31:05 +0000 | [diff] [blame] | 131 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 132 | if (GrProcessorEdgeTypeIsInverseFill(aare.getEdgeType())) { |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 133 | fragBuilder->codeAppend("\t\talpha = 1.0 - alpha;\n"); |
commit-bot@chromium.org | d85f32c | 2014-02-28 14:43:26 +0000 | [diff] [blame] | 134 | } |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 135 | fragBuilder->codeAppendf("\t\t%s = %s;\n", args.fOutputColor, |
| 136 | (GrGLSLExpr4(args.fInputColor) * GrGLSLExpr1("alpha")).c_str()); |
commit-bot@chromium.org | f053980 | 2014-02-08 19:31:05 +0000 | [diff] [blame] | 137 | } |
| 138 | |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 139 | void GLAARectEffect::onSetData(const GrGLSLProgramDataManager& pdman, |
| 140 | const GrProcessor& processor) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 141 | const AARectEffect& aare = processor.cast<AARectEffect>(); |
commit-bot@chromium.org | f053980 | 2014-02-08 19:31:05 +0000 | [diff] [blame] | 142 | const SkRect& rect = aare.getRect(); |
| 143 | if (rect != fPrevRect) { |
robertphillips | 7f14c9b | 2015-01-30 14:44:22 -0800 | [diff] [blame] | 144 | pdman.set4f(fRectUniform, rect.fLeft + 0.5f, rect.fTop + 0.5f, |
| 145 | rect.fRight - 0.5f, rect.fBottom - 0.5f); |
commit-bot@chromium.org | f053980 | 2014-02-08 19:31:05 +0000 | [diff] [blame] | 146 | fPrevRect = rect; |
| 147 | } |
| 148 | } |
| 149 | |
Brian Salomon | 94efbf5 | 2016-11-29 13:43:05 -0500 | [diff] [blame] | 150 | void GLAARectEffect::GenKey(const GrProcessor& processor, const GrShaderCaps&, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 151 | GrProcessorKeyBuilder* b) { |
| 152 | const AARectEffect& aare = processor.cast<AARectEffect>(); |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 153 | b->add32(aare.getEdgeType()); |
commit-bot@chromium.org | d85f32c | 2014-02-28 14:43:26 +0000 | [diff] [blame] | 154 | } |
| 155 | |
Brian Salomon | 94efbf5 | 2016-11-29 13:43:05 -0500 | [diff] [blame] | 156 | void AARectEffect::onGetGLSLProcessorKey(const GrShaderCaps& caps, GrProcessorKeyBuilder* b) const { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 157 | GLAARectEffect::GenKey(*this, caps, b); |
| 158 | } |
| 159 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 160 | GrGLSLFragmentProcessor* AARectEffect::onCreateGLSLInstance() const { |
robertphillips | 9cdb992 | 2016-02-03 12:25:40 -0800 | [diff] [blame] | 161 | return new GLAARectEffect; |
commit-bot@chromium.org | f053980 | 2014-02-08 19:31:05 +0000 | [diff] [blame] | 162 | } |
| 163 | |
| 164 | ////////////////////////////////////////////////////////////////////////////// |
| 165 | |
egdaniel | 64c4728 | 2015-11-13 06:54:19 -0800 | [diff] [blame] | 166 | class GrGLConvexPolyEffect : public GrGLSLFragmentProcessor { |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 167 | public: |
robertphillips | 9cdb992 | 2016-02-03 12:25:40 -0800 | [diff] [blame] | 168 | GrGLConvexPolyEffect() { |
| 169 | fPrevEdges[0] = SK_ScalarNaN; |
| 170 | } |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 171 | |
robertphillips | 9cdb992 | 2016-02-03 12:25:40 -0800 | [diff] [blame] | 172 | void emitCode(EmitArgs&) override; |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 173 | |
Brian Salomon | 94efbf5 | 2016-11-29 13:43:05 -0500 | [diff] [blame] | 174 | static inline void GenKey(const GrProcessor&, const GrShaderCaps&, GrProcessorKeyBuilder*); |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 175 | |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 176 | protected: |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 177 | void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override; |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 178 | |
| 179 | private: |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 180 | GrGLSLProgramDataManager::UniformHandle fEdgeUniform; |
robertphillips | bf536af | 2016-02-04 06:11:53 -0800 | [diff] [blame] | 181 | SkScalar fPrevEdges[3 * GrConvexPolyEffect::kMaxEdges]; |
egdaniel | 64c4728 | 2015-11-13 06:54:19 -0800 | [diff] [blame] | 182 | typedef GrGLSLFragmentProcessor INHERITED; |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 183 | }; |
| 184 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 185 | void GrGLConvexPolyEffect::emitCode(EmitArgs& args) { |
| 186 | const GrConvexPolyEffect& cpe = args.fFp.cast<GrConvexPolyEffect>(); |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 187 | |
| 188 | const char *edgeArrayName; |
cdalton | 5e58cee | 2016-02-11 12:49:47 -0800 | [diff] [blame] | 189 | fEdgeUniform = args.fUniformHandler->addUniformArray(kFragment_GrShaderFlag, |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 190 | kVec3f_GrSLType, |
| 191 | kDefault_GrSLPrecision, |
| 192 | "edges", |
| 193 | cpe.getEdgeCount(), |
| 194 | &edgeArrayName); |
cdalton | 8528541 | 2016-02-18 12:37:07 -0800 | [diff] [blame] | 195 | GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder; |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 196 | fragBuilder->codeAppend("\t\tfloat alpha = 1.0;\n"); |
| 197 | fragBuilder->codeAppend("\t\tfloat edge;\n"); |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 198 | for (int i = 0; i < cpe.getEdgeCount(); ++i) { |
Ethan Nicholas | 3865711 | 2017-02-09 17:01:22 -0500 | [diff] [blame] | 199 | fragBuilder->codeAppendf("\t\tedge = dot(%s[%d], vec3(sk_FragCoord.x, sk_FragCoord.y, " |
| 200 | "1));\n", |
| 201 | edgeArrayName, i); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 202 | if (GrProcessorEdgeTypeIsAA(cpe.getEdgeType())) { |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 203 | fragBuilder->codeAppend("\t\tedge = clamp(edge, 0.0, 1.0);\n"); |
commit-bot@chromium.org | cabf4b2 | 2014-03-05 18:27:43 +0000 | [diff] [blame] | 204 | } else { |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 205 | fragBuilder->codeAppend("\t\tedge = edge >= 0.5 ? 1.0 : 0.0;\n"); |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 206 | } |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 207 | fragBuilder->codeAppend("\t\talpha *= edge;\n"); |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 208 | } |
| 209 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 210 | if (GrProcessorEdgeTypeIsInverseFill(cpe.getEdgeType())) { |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 211 | fragBuilder->codeAppend("\talpha = 1.0 - alpha;\n"); |
commit-bot@chromium.org | d85f32c | 2014-02-28 14:43:26 +0000 | [diff] [blame] | 212 | } |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 213 | fragBuilder->codeAppendf("\t%s = %s;\n", args.fOutputColor, |
| 214 | (GrGLSLExpr4(args.fInputColor) * GrGLSLExpr1("alpha")).c_str()); |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 215 | } |
| 216 | |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 217 | void GrGLConvexPolyEffect::onSetData(const GrGLSLProgramDataManager& pdman, |
| 218 | const GrProcessor& effect) { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 219 | const GrConvexPolyEffect& cpe = effect.cast<GrConvexPolyEffect>(); |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 220 | size_t byteSize = 3 * cpe.getEdgeCount() * sizeof(SkScalar); |
| 221 | if (0 != memcmp(fPrevEdges, cpe.getEdges(), byteSize)) { |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 222 | pdman.set3fv(fEdgeUniform, cpe.getEdgeCount(), cpe.getEdges()); |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 223 | memcpy(fPrevEdges, cpe.getEdges(), byteSize); |
| 224 | } |
| 225 | } |
| 226 | |
Brian Salomon | 94efbf5 | 2016-11-29 13:43:05 -0500 | [diff] [blame] | 227 | void GrGLConvexPolyEffect::GenKey(const GrProcessor& processor, const GrShaderCaps&, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 228 | GrProcessorKeyBuilder* b) { |
| 229 | const GrConvexPolyEffect& cpe = processor.cast<GrConvexPolyEffect>(); |
| 230 | GR_STATIC_ASSERT(kGrProcessorEdgeTypeCnt <= 8); |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 231 | uint32_t key = (cpe.getEdgeCount() << 3) | cpe.getEdgeType(); |
| 232 | b->add32(key); |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 233 | } |
| 234 | |
| 235 | ////////////////////////////////////////////////////////////////////////////// |
| 236 | |
Brian Salomon | 9a76772 | 2017-03-13 17:57:28 -0400 | [diff] [blame^] | 237 | sk_sp<GrFragmentProcessor> GrConvexPolyEffect::Make(GrPrimitiveEdgeType type, const SkPath& path) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 238 | if (kHairlineAA_GrProcessorEdgeType == type) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 239 | return nullptr; |
commit-bot@chromium.org | cabf4b2 | 2014-03-05 18:27:43 +0000 | [diff] [blame] | 240 | } |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 241 | if (path.getSegmentMasks() != SkPath::kLine_SegmentMask || |
commit-bot@chromium.org | cabf4b2 | 2014-03-05 18:27:43 +0000 | [diff] [blame] | 242 | !path.isConvex()) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 243 | return nullptr; |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 244 | } |
| 245 | |
reed | 026beb5 | 2015-06-10 14:23:15 -0700 | [diff] [blame] | 246 | SkPathPriv::FirstDirection dir; |
bsalomon | 7888de0 | 2016-03-28 15:04:45 -0700 | [diff] [blame] | 247 | // The only way this should fail is if the clip is effectively a infinitely thin line. In that |
| 248 | // case nothing is inside the clip. It'd be nice to detect this at a higher level and either |
| 249 | // skip the draw or omit the clip element. |
| 250 | if (!SkPathPriv::CheapComputeFirstDirection(path, &dir)) { |
| 251 | if (GrProcessorEdgeTypeIsInverseFill(type)) { |
Brian Osman | 618d304 | 2016-10-25 10:51:28 -0400 | [diff] [blame] | 252 | return GrConstColorProcessor::Make(GrColor4f::OpaqueWhite(), |
bungeman | 06ca8ec | 2016-06-09 08:01:03 -0700 | [diff] [blame] | 253 | GrConstColorProcessor::kModulateRGBA_InputMode); |
bsalomon | 7888de0 | 2016-03-28 15:04:45 -0700 | [diff] [blame] | 254 | } |
Brian Salomon | eb62829 | 2017-02-15 14:12:26 -0500 | [diff] [blame] | 255 | // This could use kIgnore instead of kModulateRGBA but it would trigger a debug print |
| 256 | // about a coverage processor not being compatible with the alpha-as-coverage optimization. |
| 257 | // We don't really care about this unlikely case so we just use kModulateRGBA to suppress |
| 258 | // the print. |
Brian Osman | 618d304 | 2016-10-25 10:51:28 -0400 | [diff] [blame] | 259 | return GrConstColorProcessor::Make(GrColor4f::TransparentBlack(), |
Brian Salomon | eb62829 | 2017-02-15 14:12:26 -0500 | [diff] [blame] | 260 | GrConstColorProcessor::kModulateRGBA_InputMode); |
bsalomon | 7888de0 | 2016-03-28 15:04:45 -0700 | [diff] [blame] | 261 | } |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 262 | |
lsalzman | d15947e | 2016-05-31 09:46:00 -0700 | [diff] [blame] | 263 | SkScalar edges[3 * kMaxEdges]; |
| 264 | SkPoint pts[4]; |
| 265 | SkPath::Verb verb; |
| 266 | SkPath::Iter iter(path, true); |
| 267 | |
| 268 | // SkPath considers itself convex so long as there is a convex contour within it, |
| 269 | // regardless of any degenerate contours such as a string of moveTos before it. |
| 270 | // Iterate here to consume any degenerate contours and only process the points |
| 271 | // on the actual convex contour. |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 272 | int n = 0; |
lsalzman | d15947e | 2016-05-31 09:46:00 -0700 | [diff] [blame] | 273 | while ((verb = iter.next(pts, true, true)) != SkPath::kDone_Verb) { |
| 274 | switch (verb) { |
| 275 | case SkPath::kMove_Verb: |
| 276 | SkASSERT(n == 0); |
| 277 | case SkPath::kClose_Verb: |
| 278 | break; |
| 279 | case SkPath::kLine_Verb: { |
| 280 | if (n >= kMaxEdges) { |
| 281 | return nullptr; |
| 282 | } |
| 283 | SkVector v = pts[1] - pts[0]; |
| 284 | v.normalize(); |
| 285 | if (SkPathPriv::kCCW_FirstDirection == dir) { |
| 286 | edges[3 * n] = v.fY; |
| 287 | edges[3 * n + 1] = -v.fX; |
| 288 | } else { |
| 289 | edges[3 * n] = -v.fY; |
| 290 | edges[3 * n + 1] = v.fX; |
| 291 | } |
Brian Salomon | 9a76772 | 2017-03-13 17:57:28 -0400 | [diff] [blame^] | 292 | edges[3 * n + 2] = -(edges[3 * n] * pts[1].fX + edges[3 * n + 1] * pts[1].fY); |
lsalzman | d15947e | 2016-05-31 09:46:00 -0700 | [diff] [blame] | 293 | ++n; |
| 294 | break; |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 295 | } |
lsalzman | d15947e | 2016-05-31 09:46:00 -0700 | [diff] [blame] | 296 | default: |
| 297 | return nullptr; |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 298 | } |
| 299 | } |
lsalzman | d15947e | 2016-05-31 09:46:00 -0700 | [diff] [blame] | 300 | |
commit-bot@chromium.org | cabf4b2 | 2014-03-05 18:27:43 +0000 | [diff] [blame] | 301 | if (path.isInverseFillType()) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 302 | type = GrInvertProcessorEdgeType(type); |
commit-bot@chromium.org | cabf4b2 | 2014-03-05 18:27:43 +0000 | [diff] [blame] | 303 | } |
bungeman | 06ca8ec | 2016-06-09 08:01:03 -0700 | [diff] [blame] | 304 | return Make(type, n, edges); |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 305 | } |
| 306 | |
bungeman | 06ca8ec | 2016-06-09 08:01:03 -0700 | [diff] [blame] | 307 | sk_sp<GrFragmentProcessor> GrConvexPolyEffect::Make(GrPrimitiveEdgeType edgeType, |
| 308 | const SkRect& rect) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 309 | if (kHairlineAA_GrProcessorEdgeType == edgeType){ |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 310 | return nullptr; |
commit-bot@chromium.org | cabf4b2 | 2014-03-05 18:27:43 +0000 | [diff] [blame] | 311 | } |
bungeman | 06ca8ec | 2016-06-09 08:01:03 -0700 | [diff] [blame] | 312 | return AARectEffect::Make(edgeType, rect); |
commit-bot@chromium.org | f053980 | 2014-02-08 19:31:05 +0000 | [diff] [blame] | 313 | } |
| 314 | |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 315 | GrConvexPolyEffect::~GrConvexPolyEffect() {} |
| 316 | |
Brian Salomon | 94efbf5 | 2016-11-29 13:43:05 -0500 | [diff] [blame] | 317 | void GrConvexPolyEffect::onGetGLSLProcessorKey(const GrShaderCaps& caps, |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 318 | GrProcessorKeyBuilder* b) const { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 319 | GrGLConvexPolyEffect::GenKey(*this, caps, b); |
| 320 | } |
| 321 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 322 | GrGLSLFragmentProcessor* GrConvexPolyEffect::onCreateGLSLInstance() const { |
robertphillips | 9cdb992 | 2016-02-03 12:25:40 -0800 | [diff] [blame] | 323 | return new GrGLConvexPolyEffect; |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 324 | } |
| 325 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 326 | GrConvexPolyEffect::GrConvexPolyEffect(GrPrimitiveEdgeType edgeType, int n, const SkScalar edges[]) |
Brian Salomon | f3b995b | 2017-02-15 10:22:23 -0500 | [diff] [blame] | 327 | : INHERITED(kCompatibleWithCoverageAsAlpha_OptimizationFlag) |
| 328 | , fEdgeType(edgeType) |
| 329 | , fEdgeCount(n) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 330 | this->initClassID<GrConvexPolyEffect>(); |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 331 | // Factory function should have already ensured this. |
| 332 | SkASSERT(n <= kMaxEdges); |
| 333 | memcpy(fEdges, edges, 3 * n * sizeof(SkScalar)); |
| 334 | // Outset the edges by 0.5 so that a pixel with center on an edge is 50% covered in the AA case |
| 335 | // and 100% covered in the non-AA case. |
| 336 | for (int i = 0; i < n; ++i) { |
| 337 | fEdges[3 * i + 2] += SK_ScalarHalf; |
| 338 | } |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 339 | } |
| 340 | |
bsalomon | 0e08fc1 | 2014-10-15 08:19:04 -0700 | [diff] [blame] | 341 | bool GrConvexPolyEffect::onIsEqual(const GrFragmentProcessor& other) const { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 342 | const GrConvexPolyEffect& cpe = other.cast<GrConvexPolyEffect>(); |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 343 | // ignore the fact that 0 == -0 and just use memcmp. |
| 344 | return (cpe.fEdgeType == fEdgeType && cpe.fEdgeCount == fEdgeCount && |
| 345 | 0 == memcmp(cpe.fEdges, fEdges, 3 * fEdgeCount * sizeof(SkScalar))); |
| 346 | } |
| 347 | |
| 348 | ////////////////////////////////////////////////////////////////////////////// |
| 349 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 350 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrConvexPolyEffect); |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 351 | |
Hal Canary | 6f6961e | 2017-01-31 13:50:44 -0500 | [diff] [blame] | 352 | #if GR_TEST_UTILS |
bungeman | 06ca8ec | 2016-06-09 08:01:03 -0700 | [diff] [blame] | 353 | sk_sp<GrFragmentProcessor> GrConvexPolyEffect::TestCreate(GrProcessorTestData* d) { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 354 | int count = d->fRandom->nextULessThan(kMaxEdges) + 1; |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 355 | SkScalar edges[kMaxEdges * 3]; |
| 356 | for (int i = 0; i < 3 * count; ++i) { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 357 | edges[i] = d->fRandom->nextSScalar1(); |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 358 | } |
| 359 | |
bungeman | 06ca8ec | 2016-06-09 08:01:03 -0700 | [diff] [blame] | 360 | sk_sp<GrFragmentProcessor> fp; |
commit-bot@chromium.org | cabf4b2 | 2014-03-05 18:27:43 +0000 | [diff] [blame] | 361 | do { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 362 | GrPrimitiveEdgeType edgeType = static_cast<GrPrimitiveEdgeType>( |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 363 | d->fRandom->nextULessThan(kGrProcessorEdgeTypeCnt)); |
bungeman | 06ca8ec | 2016-06-09 08:01:03 -0700 | [diff] [blame] | 364 | fp = GrConvexPolyEffect::Make(edgeType, count, edges); |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 365 | } while (nullptr == fp); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 366 | return fp; |
commit-bot@chromium.org | c3fe549 | 2014-01-30 18:15:51 +0000 | [diff] [blame] | 367 | } |
Hal Canary | 6f6961e | 2017-01-31 13:50:44 -0500 | [diff] [blame] | 368 | #endif |