commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +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 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 8 | #include "gl/builders/GrGLProgramBuilder.h" |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 9 | #include "GrOvalEffect.h" |
egdaniel | 605dd0f | 2014-11-12 08:35:25 -0800 | [diff] [blame^] | 10 | #include "GrInvariantOutput.h" |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 11 | #include "gl/GrGLProcessor.h" |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 12 | #include "gl/GrGLSL.h" |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 13 | #include "GrTBackendProcessorFactory.h" |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 14 | |
| 15 | #include "SkRect.h" |
| 16 | |
| 17 | ////////////////////////////////////////////////////////////////////////////// |
| 18 | |
| 19 | class GLCircleEffect; |
| 20 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 21 | class CircleEffect : public GrFragmentProcessor { |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 22 | public: |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 23 | static GrFragmentProcessor* Create(GrPrimitiveEdgeType, const SkPoint& center, SkScalar radius); |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 24 | |
| 25 | virtual ~CircleEffect() {}; |
| 26 | static const char* Name() { return "Circle"; } |
| 27 | |
| 28 | const SkPoint& getCenter() const { return fCenter; } |
| 29 | SkScalar getRadius() const { return fRadius; } |
| 30 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 31 | GrPrimitiveEdgeType getEdgeType() const { return fEdgeType; } |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 32 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 33 | typedef GLCircleEffect GLProcessor; |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 34 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 35 | virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERRIDE; |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 36 | |
| 37 | private: |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 38 | CircleEffect(GrPrimitiveEdgeType, const SkPoint& center, SkScalar radius); |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 39 | |
bsalomon | 0e08fc1 | 2014-10-15 08:19:04 -0700 | [diff] [blame] | 40 | virtual bool onIsEqual(const GrFragmentProcessor&) const SK_OVERRIDE; |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 41 | |
egdaniel | 605dd0f | 2014-11-12 08:35:25 -0800 | [diff] [blame^] | 42 | virtual void onComputeInvariantOutput(GrInvariantOutput* inout) const SK_OVERRIDE; |
egdaniel | 1a8ecdf | 2014-10-03 06:24:12 -0700 | [diff] [blame] | 43 | |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 44 | SkPoint fCenter; |
| 45 | SkScalar fRadius; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 46 | GrPrimitiveEdgeType fEdgeType; |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 47 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 48 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 49 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 50 | typedef GrFragmentProcessor INHERITED; |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 51 | }; |
| 52 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 53 | GrFragmentProcessor* CircleEffect::Create(GrPrimitiveEdgeType edgeType, const SkPoint& center, |
| 54 | SkScalar radius) { |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 55 | SkASSERT(radius >= 0); |
bsalomon | 55fad7a | 2014-07-08 07:34:20 -0700 | [diff] [blame] | 56 | return SkNEW_ARGS(CircleEffect, (edgeType, center, radius)); |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 57 | } |
| 58 | |
egdaniel | 605dd0f | 2014-11-12 08:35:25 -0800 | [diff] [blame^] | 59 | void CircleEffect::onComputeInvariantOutput(GrInvariantOutput* inout) const { |
egdaniel | ccb2e38 | 2014-10-13 12:53:46 -0700 | [diff] [blame] | 60 | inout->mulByUnknownAlpha(); |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 61 | } |
| 62 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 63 | const GrBackendFragmentProcessorFactory& CircleEffect::getFactory() const { |
| 64 | return GrTBackendFragmentProcessorFactory<CircleEffect>::getInstance(); |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 65 | } |
| 66 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 67 | CircleEffect::CircleEffect(GrPrimitiveEdgeType edgeType, const SkPoint& c, SkScalar r) |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 68 | : fCenter(c) |
| 69 | , fRadius(r) |
| 70 | , fEdgeType(edgeType) { |
| 71 | this->setWillReadFragmentPosition(); |
| 72 | } |
| 73 | |
bsalomon | 0e08fc1 | 2014-10-15 08:19:04 -0700 | [diff] [blame] | 74 | bool CircleEffect::onIsEqual(const GrFragmentProcessor& other) const { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 75 | const CircleEffect& ce = other.cast<CircleEffect>(); |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 76 | return fEdgeType == ce.fEdgeType && fCenter == ce.fCenter && fRadius == ce.fRadius; |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 77 | } |
| 78 | |
| 79 | ////////////////////////////////////////////////////////////////////////////// |
| 80 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 81 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(CircleEffect); |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 82 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 83 | GrFragmentProcessor* CircleEffect::TestCreate(SkRandom* random, |
| 84 | GrContext*, |
| 85 | const GrDrawTargetCaps& caps, |
| 86 | GrTexture*[]) { |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 87 | SkPoint center; |
| 88 | center.fX = random->nextRangeScalar(0.f, 1000.f); |
| 89 | center.fY = random->nextRangeScalar(0.f, 1000.f); |
| 90 | SkScalar radius = random->nextRangeF(0.f, 1000.f); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 91 | GrPrimitiveEdgeType et; |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 92 | do { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 93 | et = (GrPrimitiveEdgeType)random->nextULessThan(kGrProcessorEdgeTypeCnt); |
| 94 | } while (kHairlineAA_GrProcessorEdgeType == et); |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 95 | return CircleEffect::Create(et, center, radius); |
| 96 | } |
| 97 | |
| 98 | ////////////////////////////////////////////////////////////////////////////// |
| 99 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 100 | class GLCircleEffect : public GrGLFragmentProcessor { |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 101 | public: |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 102 | GLCircleEffect(const GrBackendProcessorFactory&, const GrProcessor&); |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 103 | |
joshualitt | 1598899 | 2014-10-09 15:04:05 -0700 | [diff] [blame] | 104 | virtual void emitCode(GrGLFPBuilder* builder, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 105 | const GrFragmentProcessor& fp, |
| 106 | const GrProcessorKey& key, |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 107 | const char* outputColor, |
| 108 | const char* inputColor, |
| 109 | const TransformedCoordsArray&, |
| 110 | const TextureSamplerArray&) SK_OVERRIDE; |
| 111 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 112 | static inline void GenKey(const GrProcessor&, const GrGLCaps&, GrProcessorKeyBuilder*); |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 113 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 114 | virtual void setData(const GrGLProgramDataManager&, const GrProcessor&) SK_OVERRIDE; |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 115 | |
| 116 | private: |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 117 | GrGLProgramDataManager::UniformHandle fCircleUniform; |
| 118 | SkPoint fPrevCenter; |
| 119 | SkScalar fPrevRadius; |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 120 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 121 | typedef GrGLFragmentProcessor INHERITED; |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 122 | }; |
| 123 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 124 | GLCircleEffect::GLCircleEffect(const GrBackendProcessorFactory& factory, |
| 125 | const GrProcessor&) |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 126 | : INHERITED (factory) { |
| 127 | fPrevRadius = -1.f; |
| 128 | } |
| 129 | |
joshualitt | 1598899 | 2014-10-09 15:04:05 -0700 | [diff] [blame] | 130 | void GLCircleEffect::emitCode(GrGLFPBuilder* builder, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 131 | const GrFragmentProcessor& fp, |
| 132 | const GrProcessorKey& key, |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 133 | const char* outputColor, |
| 134 | const char* inputColor, |
| 135 | const TransformedCoordsArray&, |
| 136 | const TextureSamplerArray& samplers) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 137 | const CircleEffect& ce = fp.cast<CircleEffect>(); |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 138 | const char *circleName; |
commit-bot@chromium.org | 0a09d71 | 2014-04-09 21:26:11 +0000 | [diff] [blame] | 139 | // The circle uniform is (center.x, center.y, radius + 0.5) for regular fills and |
| 140 | // (... ,radius - 0.5) for inverse fills. |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 141 | fCircleUniform = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility, |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 142 | kVec3f_GrSLType, |
| 143 | "circle", |
| 144 | &circleName); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 145 | |
joshualitt | 1598899 | 2014-10-09 15:04:05 -0700 | [diff] [blame] | 146 | GrGLFPFragmentBuilder* fsBuilder = builder->getFragmentShaderBuilder(); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 147 | const char* fragmentPos = fsBuilder->fragmentPosition(); |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 148 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 149 | SkASSERT(kHairlineAA_GrProcessorEdgeType != ce.getEdgeType()); |
| 150 | if (GrProcessorEdgeTypeIsInverseFill(ce.getEdgeType())) { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 151 | fsBuilder->codeAppendf("\t\tfloat d = length(%s.xy - %s.xy) - %s.z;\n", |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 152 | circleName, fragmentPos, circleName); |
| 153 | } else { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 154 | fsBuilder->codeAppendf("\t\tfloat d = %s.z - length(%s.xy - %s.xy);\n", |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 155 | circleName, fragmentPos, circleName); |
| 156 | } |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 157 | if (GrProcessorEdgeTypeIsAA(ce.getEdgeType())) { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 158 | fsBuilder->codeAppend("\t\td = clamp(d, 0.0, 1.0);\n"); |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 159 | } else { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 160 | fsBuilder->codeAppend("\t\td = d > 0.5 ? 1.0 : 0.0;\n"); |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 161 | } |
| 162 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 163 | fsBuilder->codeAppendf("\t\t%s = %s;\n", outputColor, |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 164 | (GrGLSLExpr4(inputColor) * GrGLSLExpr1("d")).c_str()); |
| 165 | } |
| 166 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 167 | void GLCircleEffect::GenKey(const GrProcessor& processor, const GrGLCaps&, |
| 168 | GrProcessorKeyBuilder* b) { |
| 169 | const CircleEffect& ce = processor.cast<CircleEffect>(); |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 170 | b->add32(ce.getEdgeType()); |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 171 | } |
| 172 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 173 | void GLCircleEffect::setData(const GrGLProgramDataManager& pdman, const GrProcessor& processor) { |
| 174 | const CircleEffect& ce = processor.cast<CircleEffect>(); |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 175 | if (ce.getRadius() != fPrevRadius || ce.getCenter() != fPrevCenter) { |
commit-bot@chromium.org | 0a09d71 | 2014-04-09 21:26:11 +0000 | [diff] [blame] | 176 | SkScalar radius = ce.getRadius(); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 177 | if (GrProcessorEdgeTypeIsInverseFill(ce.getEdgeType())) { |
commit-bot@chromium.org | 0a09d71 | 2014-04-09 21:26:11 +0000 | [diff] [blame] | 178 | radius -= 0.5f; |
| 179 | } else { |
| 180 | radius += 0.5f; |
| 181 | } |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 182 | pdman.set3f(fCircleUniform, ce.getCenter().fX, ce.getCenter().fY, radius); |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 183 | fPrevCenter = ce.getCenter(); |
| 184 | fPrevRadius = ce.getRadius(); |
| 185 | } |
| 186 | } |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 187 | |
| 188 | ////////////////////////////////////////////////////////////////////////////// |
| 189 | |
| 190 | class GLEllipseEffect; |
| 191 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 192 | class EllipseEffect : public GrFragmentProcessor { |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 193 | public: |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 194 | static GrFragmentProcessor* Create(GrPrimitiveEdgeType, const SkPoint& center, SkScalar rx, |
| 195 | SkScalar ry); |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 196 | |
| 197 | virtual ~EllipseEffect() {}; |
| 198 | static const char* Name() { return "Ellipse"; } |
| 199 | |
| 200 | const SkPoint& getCenter() const { return fCenter; } |
| 201 | SkVector getRadii() const { return fRadii; } |
| 202 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 203 | GrPrimitiveEdgeType getEdgeType() const { return fEdgeType; } |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 204 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 205 | typedef GLEllipseEffect GLProcessor; |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 206 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 207 | virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERRIDE; |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 208 | |
| 209 | private: |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 210 | EllipseEffect(GrPrimitiveEdgeType, const SkPoint& center, SkScalar rx, SkScalar ry); |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 211 | |
bsalomon | 0e08fc1 | 2014-10-15 08:19:04 -0700 | [diff] [blame] | 212 | virtual bool onIsEqual(const GrFragmentProcessor&) const SK_OVERRIDE; |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 213 | |
egdaniel | 605dd0f | 2014-11-12 08:35:25 -0800 | [diff] [blame^] | 214 | virtual void onComputeInvariantOutput(GrInvariantOutput* inout) const SK_OVERRIDE; |
egdaniel | 1a8ecdf | 2014-10-03 06:24:12 -0700 | [diff] [blame] | 215 | |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 216 | SkPoint fCenter; |
| 217 | SkVector fRadii; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 218 | GrPrimitiveEdgeType fEdgeType; |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 219 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 220 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 221 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 222 | typedef GrFragmentProcessor INHERITED; |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 223 | }; |
| 224 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 225 | GrFragmentProcessor* EllipseEffect::Create(GrPrimitiveEdgeType edgeType, |
| 226 | const SkPoint& center, |
| 227 | SkScalar rx, |
| 228 | SkScalar ry) { |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 229 | SkASSERT(rx >= 0 && ry >= 0); |
bsalomon | 55fad7a | 2014-07-08 07:34:20 -0700 | [diff] [blame] | 230 | return SkNEW_ARGS(EllipseEffect, (edgeType, center, rx, ry)); |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 231 | } |
| 232 | |
egdaniel | 605dd0f | 2014-11-12 08:35:25 -0800 | [diff] [blame^] | 233 | void EllipseEffect::onComputeInvariantOutput(GrInvariantOutput* inout) const { |
egdaniel | ccb2e38 | 2014-10-13 12:53:46 -0700 | [diff] [blame] | 234 | inout->mulByUnknownAlpha(); |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 235 | } |
| 236 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 237 | const GrBackendFragmentProcessorFactory& EllipseEffect::getFactory() const { |
| 238 | return GrTBackendFragmentProcessorFactory<EllipseEffect>::getInstance(); |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 239 | } |
| 240 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 241 | EllipseEffect::EllipseEffect(GrPrimitiveEdgeType edgeType, const SkPoint& c, SkScalar rx, SkScalar ry) |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 242 | : fCenter(c) |
| 243 | , fRadii(SkVector::Make(rx, ry)) |
| 244 | , fEdgeType(edgeType) { |
| 245 | this->setWillReadFragmentPosition(); |
| 246 | } |
| 247 | |
bsalomon | 0e08fc1 | 2014-10-15 08:19:04 -0700 | [diff] [blame] | 248 | bool EllipseEffect::onIsEqual(const GrFragmentProcessor& other) const { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 249 | const EllipseEffect& ee = other.cast<EllipseEffect>(); |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 250 | return fEdgeType == ee.fEdgeType && fCenter == ee.fCenter && fRadii == ee.fRadii; |
| 251 | } |
| 252 | |
| 253 | ////////////////////////////////////////////////////////////////////////////// |
| 254 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 255 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(EllipseEffect); |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 256 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 257 | GrFragmentProcessor* EllipseEffect::TestCreate(SkRandom* random, |
| 258 | GrContext*, |
| 259 | const GrDrawTargetCaps& caps, |
| 260 | GrTexture*[]) { |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 261 | SkPoint center; |
| 262 | center.fX = random->nextRangeScalar(0.f, 1000.f); |
| 263 | center.fY = random->nextRangeScalar(0.f, 1000.f); |
| 264 | SkScalar rx = random->nextRangeF(0.f, 1000.f); |
| 265 | SkScalar ry = random->nextRangeF(0.f, 1000.f); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 266 | GrPrimitiveEdgeType et; |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 267 | do { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 268 | et = (GrPrimitiveEdgeType)random->nextULessThan(kGrProcessorEdgeTypeCnt); |
| 269 | } while (kHairlineAA_GrProcessorEdgeType == et); |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 270 | return EllipseEffect::Create(et, center, rx, ry); |
| 271 | } |
| 272 | |
| 273 | ////////////////////////////////////////////////////////////////////////////// |
| 274 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 275 | class GLEllipseEffect : public GrGLFragmentProcessor { |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 276 | public: |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 277 | GLEllipseEffect(const GrBackendProcessorFactory&, const GrProcessor&); |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 278 | |
joshualitt | 1598899 | 2014-10-09 15:04:05 -0700 | [diff] [blame] | 279 | virtual void emitCode(GrGLFPBuilder* builder, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 280 | const GrFragmentProcessor& fp, |
| 281 | const GrProcessorKey& key, |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 282 | const char* outputColor, |
| 283 | const char* inputColor, |
| 284 | const TransformedCoordsArray&, |
| 285 | const TextureSamplerArray&) SK_OVERRIDE; |
| 286 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 287 | static inline void GenKey(const GrProcessor&, const GrGLCaps&, GrProcessorKeyBuilder*); |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 288 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 289 | virtual void setData(const GrGLProgramDataManager&, const GrProcessor&) SK_OVERRIDE; |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 290 | |
| 291 | private: |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 292 | GrGLProgramDataManager::UniformHandle fEllipseUniform; |
| 293 | SkPoint fPrevCenter; |
| 294 | SkVector fPrevRadii; |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 295 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 296 | typedef GrGLFragmentProcessor INHERITED; |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 297 | }; |
| 298 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 299 | GLEllipseEffect::GLEllipseEffect(const GrBackendProcessorFactory& factory, |
| 300 | const GrProcessor& effect) |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 301 | : INHERITED (factory) { |
| 302 | fPrevRadii.fX = -1.f; |
| 303 | } |
| 304 | |
joshualitt | 1598899 | 2014-10-09 15:04:05 -0700 | [diff] [blame] | 305 | void GLEllipseEffect::emitCode(GrGLFPBuilder* builder, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 306 | const GrFragmentProcessor& fp, |
| 307 | const GrProcessorKey& key, |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 308 | const char* outputColor, |
| 309 | const char* inputColor, |
| 310 | const TransformedCoordsArray&, |
| 311 | const TextureSamplerArray& samplers) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 312 | const EllipseEffect& ee = fp.cast<EllipseEffect>(); |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 313 | const char *ellipseName; |
| 314 | // The ellipse uniform is (center.x, center.y, 1 / rx^2, 1 / ry^2) |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 315 | fEllipseUniform = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility, |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 316 | kVec4f_GrSLType, |
| 317 | "ellipse", |
| 318 | &ellipseName); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 319 | |
joshualitt | 1598899 | 2014-10-09 15:04:05 -0700 | [diff] [blame] | 320 | GrGLFPFragmentBuilder* fsBuilder = builder->getFragmentShaderBuilder(); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 321 | const char* fragmentPos = fsBuilder->fragmentPosition(); |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 322 | |
| 323 | // d is the offset to the ellipse center |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 324 | fsBuilder->codeAppendf("\t\tvec2 d = %s.xy - %s.xy;\n", fragmentPos, ellipseName); |
| 325 | fsBuilder->codeAppendf("\t\tvec2 Z = d * %s.zw;\n", ellipseName); |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 326 | // implicit is the evaluation of (x/rx)^2 + (y/ry)^2 - 1. |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 327 | fsBuilder->codeAppend("\t\tfloat implicit = dot(Z, d) - 1.0;\n"); |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 328 | // grad_dot is the squared length of the gradient of the implicit. |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 329 | fsBuilder->codeAppendf("\t\tfloat grad_dot = 4.0 * dot(Z, Z);\n"); |
commit-bot@chromium.org | 1b035d8 | 2014-04-09 17:11:09 +0000 | [diff] [blame] | 330 | // avoid calling inversesqrt on zero. |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 331 | fsBuilder->codeAppend("\t\tgrad_dot = max(grad_dot, 1.0e-4);\n"); |
| 332 | fsBuilder->codeAppendf("\t\tfloat approx_dist = implicit * inversesqrt(grad_dot);\n"); |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 333 | |
| 334 | switch (ee.getEdgeType()) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 335 | case kFillAA_GrProcessorEdgeType: |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 336 | fsBuilder->codeAppend("\t\tfloat alpha = clamp(0.5 - approx_dist, 0.0, 1.0);\n"); |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 337 | break; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 338 | case kInverseFillAA_GrProcessorEdgeType: |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 339 | fsBuilder->codeAppend("\t\tfloat alpha = clamp(0.5 + approx_dist, 0.0, 1.0);\n"); |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 340 | break; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 341 | case kFillBW_GrProcessorEdgeType: |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 342 | fsBuilder->codeAppend("\t\tfloat alpha = approx_dist > 0.0 ? 0.0 : 1.0;\n"); |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 343 | break; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 344 | case kInverseFillBW_GrProcessorEdgeType: |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 345 | fsBuilder->codeAppend("\t\tfloat alpha = approx_dist > 0.0 ? 1.0 : 0.0;\n"); |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 346 | break; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 347 | case kHairlineAA_GrProcessorEdgeType: |
commit-bot@chromium.org | 88cb22b | 2014-04-30 14:17:00 +0000 | [diff] [blame] | 348 | SkFAIL("Hairline not expected here."); |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 349 | } |
| 350 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 351 | fsBuilder->codeAppendf("\t\t%s = %s;\n", outputColor, |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 352 | (GrGLSLExpr4(inputColor) * GrGLSLExpr1("alpha")).c_str()); |
| 353 | } |
| 354 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 355 | void GLEllipseEffect::GenKey(const GrProcessor& effect, const GrGLCaps&, |
| 356 | GrProcessorKeyBuilder* b) { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 357 | const EllipseEffect& ee = effect.cast<EllipseEffect>(); |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 358 | b->add32(ee.getEdgeType()); |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 359 | } |
| 360 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 361 | void GLEllipseEffect::setData(const GrGLProgramDataManager& pdman, const GrProcessor& effect) { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 362 | const EllipseEffect& ee = effect.cast<EllipseEffect>(); |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 363 | if (ee.getRadii() != fPrevRadii || ee.getCenter() != fPrevCenter) { |
| 364 | SkScalar invRXSqd = 1.f / (ee.getRadii().fX * ee.getRadii().fX); |
| 365 | SkScalar invRYSqd = 1.f / (ee.getRadii().fY * ee.getRadii().fY); |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 366 | pdman.set4f(fEllipseUniform, ee.getCenter().fX, ee.getCenter().fY, invRXSqd, invRYSqd); |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 367 | fPrevCenter = ee.getCenter(); |
| 368 | fPrevRadii = ee.getRadii(); |
| 369 | } |
| 370 | } |
| 371 | |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 372 | ////////////////////////////////////////////////////////////////////////////// |
| 373 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 374 | GrFragmentProcessor* GrOvalEffect::Create(GrPrimitiveEdgeType edgeType, const SkRect& oval) { |
| 375 | if (kHairlineAA_GrProcessorEdgeType == edgeType) { |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 376 | return NULL; |
| 377 | } |
| 378 | SkScalar w = oval.width(); |
| 379 | SkScalar h = oval.height(); |
| 380 | if (SkScalarNearlyEqual(w, h)) { |
| 381 | w /= 2; |
| 382 | return CircleEffect::Create(edgeType, SkPoint::Make(oval.fLeft + w, oval.fTop + w), w); |
commit-bot@chromium.org | d0a5029 | 2014-04-02 15:00:39 +0000 | [diff] [blame] | 383 | } else { |
| 384 | w /= 2; |
| 385 | h /= 2; |
| 386 | return EllipseEffect::Create(edgeType, SkPoint::Make(oval.fLeft + w, oval.fTop + h), w, h); |
commit-bot@chromium.org | 3eedb80 | 2014-03-28 15:58:31 +0000 | [diff] [blame] | 387 | } |
| 388 | |
| 389 | return NULL; |
| 390 | } |