commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 2 | /* |
| 3 | * Copyright 2014 Google Inc. |
| 4 | * |
| 5 | * Use of this source code is governed by a BSD-style license that can be |
| 6 | * found in the LICENSE file. |
| 7 | */ |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 8 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 9 | #include "SkTwoPointConicalGradient_gpu.h" |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 10 | |
| 11 | #include "SkTwoPointConicalGradient.h" |
| 12 | |
commit-bot@chromium.org | ef93d29 | 2014-04-10 15:37:52 +0000 | [diff] [blame] | 13 | #if SK_SUPPORT_GPU |
joshualitt | 8ca93e7 | 2015-07-08 06:51:43 -0700 | [diff] [blame] | 14 | #include "GrPaint.h" |
egdaniel | 2d721d3 | 2015-11-11 13:06:05 -0800 | [diff] [blame^] | 15 | #include "glsl/GrGLSLFragmentShaderBuilder.h" |
| 16 | #include "glsl/GrGLSLProgramBuilder.h" |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 17 | #include "glsl/GrGLSLProgramDataManager.h" |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 18 | // For brevity |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 19 | typedef GrGLSLProgramDataManager::UniformHandle UniformHandle; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 20 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 21 | static const SkScalar kErrorTol = 0.00001f; |
egdaniel | 8405ef9 | 2014-06-09 11:57:28 -0700 | [diff] [blame] | 22 | static const SkScalar kEdgeErrorTol = 5.f * kErrorTol; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 23 | |
| 24 | /** |
| 25 | * We have three general cases for 2pt conical gradients. First we always assume that |
| 26 | * the start radius <= end radius. Our first case (kInside_) is when the start circle |
| 27 | * is completely enclosed by the end circle. The second case (kOutside_) is the case |
| 28 | * when the start circle is either completely outside the end circle or the circles |
| 29 | * overlap. The final case (kEdge_) is when the start circle is inside the end one, |
| 30 | * but the two are just barely touching at 1 point along their edges. |
| 31 | */ |
| 32 | enum ConicalType { |
| 33 | kInside_ConicalType, |
| 34 | kOutside_ConicalType, |
| 35 | kEdge_ConicalType, |
| 36 | }; |
| 37 | |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 38 | ////////////////////////////////////////////////////////////////////////////// |
| 39 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 40 | static void set_matrix_edge_conical(const SkTwoPointConicalGradient& shader, |
| 41 | SkMatrix* invLMatrix) { |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 42 | // Inverse of the current local matrix is passed in then, |
| 43 | // translate to center1, rotate so center2 is on x axis. |
| 44 | const SkPoint& center1 = shader.getStartCenter(); |
| 45 | const SkPoint& center2 = shader.getEndCenter(); |
| 46 | |
| 47 | invLMatrix->postTranslate(-center1.fX, -center1.fY); |
| 48 | |
| 49 | SkPoint diff = center2 - center1; |
| 50 | SkScalar diffLen = diff.length(); |
| 51 | if (0 != diffLen) { |
| 52 | SkScalar invDiffLen = SkScalarInvert(diffLen); |
| 53 | SkMatrix rot; |
| 54 | rot.setSinCos(-SkScalarMul(invDiffLen, diff.fY), |
| 55 | SkScalarMul(invDiffLen, diff.fX)); |
| 56 | invLMatrix->postConcat(rot); |
| 57 | } |
| 58 | } |
| 59 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 60 | class Edge2PtConicalEffect : public GrGradientEffect { |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 61 | public: |
| 62 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 63 | static GrFragmentProcessor* Create(GrContext* ctx, |
| 64 | const SkTwoPointConicalGradient& shader, |
| 65 | const SkMatrix& matrix, |
| 66 | SkShader::TileMode tm) { |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 67 | return new Edge2PtConicalEffect(ctx, shader, matrix, tm); |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 68 | } |
| 69 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 70 | virtual ~Edge2PtConicalEffect() {} |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 71 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 72 | const char* name() const override { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 73 | return "Two-Point Conical Gradient Edge Touching"; |
| 74 | } |
| 75 | |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 76 | // The radial gradient parameters can collapse to a linear (instead of quadratic) equation. |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 77 | SkScalar center() const { return fCenterX1; } |
| 78 | SkScalar diffRadius() const { return fDiffRadius; } |
| 79 | SkScalar radius() const { return fRadius0; } |
| 80 | |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 81 | private: |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 82 | GrGLFragmentProcessor* onCreateGLInstance() const override; |
| 83 | |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame] | 84 | void onGetGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override; |
| 85 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 86 | bool onIsEqual(const GrFragmentProcessor& sBase) const override { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 87 | const Edge2PtConicalEffect& s = sBase.cast<Edge2PtConicalEffect>(); |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 88 | return (INHERITED::onIsEqual(sBase) && |
| 89 | this->fCenterX1 == s.fCenterX1 && |
| 90 | this->fRadius0 == s.fRadius0 && |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 91 | this->fDiffRadius == s.fDiffRadius); |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 92 | } |
| 93 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 94 | Edge2PtConicalEffect(GrContext* ctx, |
| 95 | const SkTwoPointConicalGradient& shader, |
| 96 | const SkMatrix& matrix, |
| 97 | SkShader::TileMode tm) |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 98 | : INHERITED(ctx, shader, matrix, tm), |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 99 | fCenterX1(shader.getCenterX1()), |
| 100 | fRadius0(shader.getStartRadius()), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 101 | fDiffRadius(shader.getDiffRadius()){ |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 102 | this->initClassID<Edge2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 103 | // We should only be calling this shader if we are degenerate case with touching circles |
egdaniel | 8405ef9 | 2014-06-09 11:57:28 -0700 | [diff] [blame] | 104 | // When deciding if we are in edge case, we scaled by the end radius for cases when the |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 105 | // start radius was close to zero, otherwise we scaled by the start radius. In addition |
| 106 | // Our test for the edge case in set_matrix_circle_conical has a higher tolerance so we |
| 107 | // need the sqrt value below |
| 108 | SkASSERT(SkScalarAbs(SkScalarAbs(fDiffRadius) - fCenterX1) < |
| 109 | (fRadius0 < kErrorTol ? shader.getEndRadius() * kEdgeErrorTol : |
| 110 | fRadius0 * sqrt(kEdgeErrorTol))); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 111 | |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 112 | // We pass the linear part of the quadratic as a varying. |
| 113 | // float b = -2.0 * (fCenterX1 * x + fRadius0 * fDiffRadius * z) |
| 114 | fBTransform = this->getCoordTransform(); |
| 115 | SkMatrix& bMatrix = *fBTransform.accessMatrix(); |
| 116 | SkScalar r0dr = SkScalarMul(fRadius0, fDiffRadius); |
| 117 | bMatrix[SkMatrix::kMScaleX] = -2 * (SkScalarMul(fCenterX1, bMatrix[SkMatrix::kMScaleX]) + |
| 118 | SkScalarMul(r0dr, bMatrix[SkMatrix::kMPersp0])); |
| 119 | bMatrix[SkMatrix::kMSkewX] = -2 * (SkScalarMul(fCenterX1, bMatrix[SkMatrix::kMSkewX]) + |
| 120 | SkScalarMul(r0dr, bMatrix[SkMatrix::kMPersp1])); |
| 121 | bMatrix[SkMatrix::kMTransX] = -2 * (SkScalarMul(fCenterX1, bMatrix[SkMatrix::kMTransX]) + |
| 122 | SkScalarMul(r0dr, bMatrix[SkMatrix::kMPersp2])); |
| 123 | this->addCoordTransform(&fBTransform); |
| 124 | } |
| 125 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 126 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 127 | |
| 128 | // @{ |
| 129 | // Cache of values - these can change arbitrarily, EXCEPT |
| 130 | // we shouldn't change between degenerate and non-degenerate?! |
| 131 | |
| 132 | GrCoordTransform fBTransform; |
| 133 | SkScalar fCenterX1; |
| 134 | SkScalar fRadius0; |
| 135 | SkScalar fDiffRadius; |
| 136 | |
| 137 | // @} |
| 138 | |
| 139 | typedef GrGradientEffect INHERITED; |
| 140 | }; |
| 141 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 142 | class GLEdge2PtConicalEffect : public GrGLGradientEffect { |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 143 | public: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 144 | GLEdge2PtConicalEffect(const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 145 | virtual ~GLEdge2PtConicalEffect() { } |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 146 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 147 | virtual void emitCode(EmitArgs&) override; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 148 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 149 | static void GenKey(const GrProcessor&, const GrGLSLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 150 | |
| 151 | protected: |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 152 | void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override; |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 153 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 154 | UniformHandle fParamUni; |
| 155 | |
| 156 | const char* fVSVaryingName; |
| 157 | const char* fFSVaryingName; |
| 158 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 159 | // @{ |
| 160 | /// Values last uploaded as uniforms |
| 161 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 162 | SkScalar fCachedRadius; |
| 163 | SkScalar fCachedDiffRadius; |
| 164 | |
| 165 | // @} |
| 166 | |
| 167 | private: |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 168 | typedef GrGLGradientEffect INHERITED; |
| 169 | |
| 170 | }; |
| 171 | |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame] | 172 | void Edge2PtConicalEffect::onGetGLProcessorKey(const GrGLSLCaps& caps, |
egdaniel | 2d721d3 | 2015-11-11 13:06:05 -0800 | [diff] [blame^] | 173 | GrProcessorKeyBuilder* b) const { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 174 | GLEdge2PtConicalEffect::GenKey(*this, caps, b); |
| 175 | } |
| 176 | |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 177 | GrGLFragmentProcessor* Edge2PtConicalEffect::onCreateGLInstance() const { |
halcanary | 385fe4d | 2015-08-26 13:07:48 -0700 | [diff] [blame] | 178 | return new GLEdge2PtConicalEffect(*this); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 179 | } |
skia.committer@gmail.com | 221b911 | 2014-04-04 03:04:32 +0000 | [diff] [blame] | 180 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 181 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(Edge2PtConicalEffect); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 182 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 183 | /* |
| 184 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 185 | */ |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 186 | const GrFragmentProcessor* Edge2PtConicalEffect::TestCreate(GrProcessorTestData* d) { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 187 | SkPoint center1 = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()}; |
| 188 | SkScalar radius1 = d->fRandom->nextUScalar1(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 189 | SkPoint center2; |
| 190 | SkScalar radius2; |
| 191 | do { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 192 | center2.set(d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 193 | // If the circles are identical the factory will give us an empty shader. |
| 194 | // This will happen if we pick identical centers |
| 195 | } while (center1 == center2); |
| 196 | |
| 197 | // Below makes sure that circle one is contained within circle two |
| 198 | // and both circles are touching on an edge |
| 199 | SkPoint diff = center2 - center1; |
| 200 | SkScalar diffLen = diff.length(); |
| 201 | radius2 = radius1 + diffLen; |
| 202 | |
| 203 | SkColor colors[kMaxRandomGradientColors]; |
| 204 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 205 | SkScalar* stops = stopsArray; |
| 206 | SkShader::TileMode tm; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 207 | int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tm); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 208 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 209 | center2, radius2, |
| 210 | colors, stops, colorCount, |
| 211 | tm)); |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 212 | const GrFragmentProcessor* fp = shader->asFragmentProcessor(d->fContext, |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 213 | GrTest::TestMatrix(d->fRandom), NULL, kNone_SkFilterQuality); |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 214 | GrAlwaysAssert(fp); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 215 | return fp; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 216 | } |
| 217 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 218 | GLEdge2PtConicalEffect::GLEdge2PtConicalEffect(const GrProcessor&) |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 219 | : fVSVaryingName(nullptr) |
| 220 | , fFSVaryingName(nullptr) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 221 | , fCachedRadius(-SK_ScalarMax) |
| 222 | , fCachedDiffRadius(-SK_ScalarMax) {} |
| 223 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 224 | void GLEdge2PtConicalEffect::emitCode(EmitArgs& args) { |
| 225 | const Edge2PtConicalEffect& ge = args.fFp.cast<Edge2PtConicalEffect>(); |
| 226 | this->emitUniforms(args.fBuilder, ge); |
egdaniel | 2d721d3 | 2015-11-11 13:06:05 -0800 | [diff] [blame^] | 227 | fParamUni = args.fBuilder->addUniformArray(GrGLSLProgramBuilder::kFragment_Visibility, |
bsalomon | 422f56f | 2014-12-09 10:18:12 -0800 | [diff] [blame] | 228 | kFloat_GrSLType, kDefault_GrSLPrecision, |
| 229 | "Conical2FSParams", 3); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 230 | |
| 231 | SkString cName("c"); |
| 232 | SkString tName("t"); |
| 233 | SkString p0; // start radius |
| 234 | SkString p1; // start radius squared |
| 235 | SkString p2; // difference in radii (r1 - r0) |
| 236 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 237 | args.fBuilder->getUniformVariable(fParamUni).appendArrayAccess(0, &p0); |
| 238 | args.fBuilder->getUniformVariable(fParamUni).appendArrayAccess(1, &p1); |
| 239 | args.fBuilder->getUniformVariable(fParamUni).appendArrayAccess(2, &p2); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 240 | |
| 241 | // We interpolate the linear component in coords[1]. |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 242 | SkASSERT(args.fCoords[0].getType() == args.fCoords[1].getType()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 243 | const char* coords2D; |
| 244 | SkString bVar; |
egdaniel | 2d721d3 | 2015-11-11 13:06:05 -0800 | [diff] [blame^] | 245 | GrGLSLFragmentBuilder* fsBuilder = args.fBuilder->getFragmentShaderBuilder(); |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 246 | if (kVec3f_GrSLType == args.fCoords[0].getType()) { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 247 | fsBuilder->codeAppendf("\tvec3 interpolants = vec3(%s.xy / %s.z, %s.x / %s.z);\n", |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 248 | args.fCoords[0].c_str(), args.fCoords[0].c_str(), |
| 249 | args.fCoords[1].c_str(), args.fCoords[1].c_str()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 250 | coords2D = "interpolants.xy"; |
| 251 | bVar = "interpolants.z"; |
| 252 | } else { |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 253 | coords2D = args.fCoords[0].c_str(); |
| 254 | bVar.printf("%s.x", args.fCoords[1].c_str()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 255 | } |
| 256 | |
| 257 | // output will default to transparent black (we simply won't write anything |
| 258 | // else to it if invalid, instead of discarding or returning prematurely) |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 259 | fsBuilder->codeAppendf("\t%s = vec4(0.0,0.0,0.0,0.0);\n", args.fOutputColor); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 260 | |
| 261 | // c = (x^2)+(y^2) - params[1] |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 262 | fsBuilder->codeAppendf("\tfloat %s = dot(%s, %s) - %s;\n", |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 263 | cName.c_str(), coords2D, coords2D, p1.c_str()); |
| 264 | |
| 265 | // linear case: t = -c/b |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 266 | fsBuilder->codeAppendf("\tfloat %s = -(%s / %s);\n", tName.c_str(), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 267 | cName.c_str(), bVar.c_str()); |
| 268 | |
| 269 | // if r(t) > 0, then t will be the x coordinate |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 270 | fsBuilder->codeAppendf("\tif (%s * %s + %s > 0.0) {\n", tName.c_str(), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 271 | p2.c_str(), p0.c_str()); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 272 | fsBuilder->codeAppend("\t"); |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 273 | this->emitColor(args.fBuilder, ge, tName.c_str(), args.fOutputColor, args.fInputColor, |
| 274 | args.fSamplers); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 275 | fsBuilder->codeAppend("\t}\n"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 276 | } |
| 277 | |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 278 | void GLEdge2PtConicalEffect::onSetData(const GrGLSLProgramDataManager& pdman, |
| 279 | const GrProcessor& processor) { |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 280 | INHERITED::onSetData(pdman, processor); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 281 | const Edge2PtConicalEffect& data = processor.cast<Edge2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 282 | SkScalar radius0 = data.radius(); |
| 283 | SkScalar diffRadius = data.diffRadius(); |
| 284 | |
| 285 | if (fCachedRadius != radius0 || |
| 286 | fCachedDiffRadius != diffRadius) { |
| 287 | |
| 288 | float values[3] = { |
| 289 | SkScalarToFloat(radius0), |
| 290 | SkScalarToFloat(SkScalarMul(radius0, radius0)), |
| 291 | SkScalarToFloat(diffRadius) |
| 292 | }; |
| 293 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 294 | pdman.set1fv(fParamUni, 3, values); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 295 | fCachedRadius = radius0; |
| 296 | fCachedDiffRadius = diffRadius; |
| 297 | } |
| 298 | } |
| 299 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 300 | void GLEdge2PtConicalEffect::GenKey(const GrProcessor& processor, |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 301 | const GrGLSLCaps&, GrProcessorKeyBuilder* b) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 302 | b->add32(GenBaseGradientKey(processor)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 303 | } |
| 304 | |
| 305 | ////////////////////////////////////////////////////////////////////////////// |
| 306 | // Focal Conical Gradients |
| 307 | ////////////////////////////////////////////////////////////////////////////// |
| 308 | |
| 309 | static ConicalType set_matrix_focal_conical(const SkTwoPointConicalGradient& shader, |
| 310 | SkMatrix* invLMatrix, SkScalar* focalX) { |
| 311 | // Inverse of the current local matrix is passed in then, |
| 312 | // translate, scale, and rotate such that endCircle is unit circle on x-axis, |
| 313 | // and focal point is at the origin. |
| 314 | ConicalType conicalType; |
| 315 | const SkPoint& focal = shader.getStartCenter(); |
| 316 | const SkPoint& centerEnd = shader.getEndCenter(); |
| 317 | SkScalar radius = shader.getEndRadius(); |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 318 | SkScalar invRadius = 1.f / radius; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 319 | |
| 320 | SkMatrix matrix; |
| 321 | |
| 322 | matrix.setTranslate(-centerEnd.fX, -centerEnd.fY); |
| 323 | matrix.postScale(invRadius, invRadius); |
| 324 | |
| 325 | SkPoint focalTrans; |
| 326 | matrix.mapPoints(&focalTrans, &focal, 1); |
| 327 | *focalX = focalTrans.length(); |
| 328 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 329 | if (0.f != *focalX) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 330 | SkScalar invFocalX = SkScalarInvert(*focalX); |
| 331 | SkMatrix rot; |
| 332 | rot.setSinCos(-SkScalarMul(invFocalX, focalTrans.fY), |
| 333 | SkScalarMul(invFocalX, focalTrans.fX)); |
| 334 | matrix.postConcat(rot); |
| 335 | } |
| 336 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 337 | matrix.postTranslate(-(*focalX), 0.f); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 338 | |
| 339 | // If the focal point is touching the edge of the circle it will |
| 340 | // cause a degenerate case that must be handled separately |
egdaniel | 8405ef9 | 2014-06-09 11:57:28 -0700 | [diff] [blame] | 341 | // kEdgeErrorTol = 5 * kErrorTol was picked after manual testing the |
| 342 | // stability trade off versus the linear approx used in the Edge Shader |
| 343 | if (SkScalarAbs(1.f - (*focalX)) < kEdgeErrorTol) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 344 | return kEdge_ConicalType; |
| 345 | } |
| 346 | |
| 347 | // Scale factor 1 / (1 - focalX * focalX) |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 348 | SkScalar oneMinusF2 = 1.f - SkScalarMul(*focalX, *focalX); |
reed | 80ea19c | 2015-05-12 10:37:34 -0700 | [diff] [blame] | 349 | SkScalar s = SkScalarInvert(oneMinusF2); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 350 | |
| 351 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 352 | if (s >= 0.f) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 353 | conicalType = kInside_ConicalType; |
| 354 | matrix.postScale(s, s * SkScalarSqrt(oneMinusF2)); |
| 355 | } else { |
| 356 | conicalType = kOutside_ConicalType; |
| 357 | matrix.postScale(s, s); |
| 358 | } |
| 359 | |
| 360 | invLMatrix->postConcat(matrix); |
| 361 | |
| 362 | return conicalType; |
| 363 | } |
| 364 | |
| 365 | ////////////////////////////////////////////////////////////////////////////// |
| 366 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 367 | class FocalOutside2PtConicalEffect : public GrGradientEffect { |
| 368 | public: |
| 369 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 370 | static GrFragmentProcessor* Create(GrContext* ctx, |
| 371 | const SkTwoPointConicalGradient& shader, |
| 372 | const SkMatrix& matrix, |
| 373 | SkShader::TileMode tm, |
| 374 | SkScalar focalX) { |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 375 | return new FocalOutside2PtConicalEffect(ctx, shader, matrix, tm, focalX); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 376 | } |
| 377 | |
| 378 | virtual ~FocalOutside2PtConicalEffect() { } |
| 379 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 380 | const char* name() const override { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 381 | return "Two-Point Conical Gradient Focal Outside"; |
| 382 | } |
| 383 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 384 | bool isFlipped() const { return fIsFlipped; } |
| 385 | SkScalar focal() const { return fFocalX; } |
| 386 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 387 | private: |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 388 | GrGLFragmentProcessor* onCreateGLInstance() const override; |
| 389 | |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame] | 390 | void onGetGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override; |
| 391 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 392 | bool onIsEqual(const GrFragmentProcessor& sBase) const override { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 393 | const FocalOutside2PtConicalEffect& s = sBase.cast<FocalOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 394 | return (INHERITED::onIsEqual(sBase) && |
| 395 | this->fFocalX == s.fFocalX && |
| 396 | this->fIsFlipped == s.fIsFlipped); |
| 397 | } |
| 398 | |
| 399 | FocalOutside2PtConicalEffect(GrContext* ctx, |
| 400 | const SkTwoPointConicalGradient& shader, |
| 401 | const SkMatrix& matrix, |
| 402 | SkShader::TileMode tm, |
| 403 | SkScalar focalX) |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 404 | : INHERITED(ctx, shader, matrix, tm) |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 405 | , fFocalX(focalX) |
| 406 | , fIsFlipped(shader.isFlippedGrad()) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 407 | this->initClassID<FocalOutside2PtConicalEffect>(); |
| 408 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 409 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 410 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 411 | |
| 412 | SkScalar fFocalX; |
| 413 | bool fIsFlipped; |
| 414 | |
| 415 | typedef GrGradientEffect INHERITED; |
| 416 | }; |
| 417 | |
| 418 | class GLFocalOutside2PtConicalEffect : public GrGLGradientEffect { |
| 419 | public: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 420 | GLFocalOutside2PtConicalEffect(const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 421 | virtual ~GLFocalOutside2PtConicalEffect() { } |
| 422 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 423 | virtual void emitCode(EmitArgs&) override; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 424 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 425 | static void GenKey(const GrProcessor&, const GrGLSLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 426 | |
| 427 | protected: |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 428 | void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override; |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 429 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 430 | UniformHandle fParamUni; |
| 431 | |
| 432 | const char* fVSVaryingName; |
| 433 | const char* fFSVaryingName; |
| 434 | |
| 435 | bool fIsFlipped; |
| 436 | |
| 437 | // @{ |
| 438 | /// Values last uploaded as uniforms |
| 439 | |
| 440 | SkScalar fCachedFocal; |
| 441 | |
| 442 | // @} |
| 443 | |
| 444 | private: |
| 445 | typedef GrGLGradientEffect INHERITED; |
| 446 | |
| 447 | }; |
| 448 | |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame] | 449 | void FocalOutside2PtConicalEffect::onGetGLProcessorKey(const GrGLSLCaps& caps, |
egdaniel | 2d721d3 | 2015-11-11 13:06:05 -0800 | [diff] [blame^] | 450 | GrProcessorKeyBuilder* b) const { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 451 | GLFocalOutside2PtConicalEffect::GenKey(*this, caps, b); |
| 452 | } |
| 453 | |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 454 | GrGLFragmentProcessor* FocalOutside2PtConicalEffect::onCreateGLInstance() const { |
halcanary | 385fe4d | 2015-08-26 13:07:48 -0700 | [diff] [blame] | 455 | return new GLFocalOutside2PtConicalEffect(*this); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 456 | } |
| 457 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 458 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(FocalOutside2PtConicalEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 459 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 460 | /* |
| 461 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 462 | */ |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 463 | const GrFragmentProcessor* FocalOutside2PtConicalEffect::TestCreate(GrProcessorTestData* d) { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 464 | SkPoint center1 = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()}; |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 465 | SkScalar radius1 = 0.f; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 466 | SkPoint center2; |
| 467 | SkScalar radius2; |
| 468 | do { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 469 | center2.set(d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 470 | // Need to make sure the centers are not the same or else focal point will be inside |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 471 | } while (center1 == center2); |
| 472 | SkPoint diff = center2 - center1; |
| 473 | SkScalar diffLen = diff.length(); |
| 474 | // Below makes sure that the focal point is not contained within circle two |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 475 | radius2 = d->fRandom->nextRangeF(0.f, diffLen); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 476 | |
| 477 | SkColor colors[kMaxRandomGradientColors]; |
| 478 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 479 | SkScalar* stops = stopsArray; |
| 480 | SkShader::TileMode tm; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 481 | int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tm); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 482 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 483 | center2, radius2, |
| 484 | colors, stops, colorCount, |
| 485 | tm)); |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 486 | const GrFragmentProcessor* fp = shader->asFragmentProcessor(d->fContext, |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 487 | GrTest::TestMatrix(d->fRandom), NULL, kNone_SkFilterQuality); |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 488 | GrAlwaysAssert(fp); |
| 489 | return fp; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 490 | } |
| 491 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 492 | GLFocalOutside2PtConicalEffect::GLFocalOutside2PtConicalEffect(const GrProcessor& processor) |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 493 | : fVSVaryingName(nullptr) |
| 494 | , fFSVaryingName(nullptr) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 495 | , fCachedFocal(SK_ScalarMax) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 496 | const FocalOutside2PtConicalEffect& data = processor.cast<FocalOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 497 | fIsFlipped = data.isFlipped(); |
| 498 | } |
| 499 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 500 | void GLFocalOutside2PtConicalEffect::emitCode(EmitArgs& args) { |
| 501 | const FocalOutside2PtConicalEffect& ge = args.fFp.cast<FocalOutside2PtConicalEffect>(); |
| 502 | this->emitUniforms(args.fBuilder, ge); |
egdaniel | 2d721d3 | 2015-11-11 13:06:05 -0800 | [diff] [blame^] | 503 | fParamUni = args.fBuilder->addUniformArray(GrGLSLProgramBuilder::kFragment_Visibility, |
bsalomon | 422f56f | 2014-12-09 10:18:12 -0800 | [diff] [blame] | 504 | kFloat_GrSLType, kDefault_GrSLPrecision, |
| 505 | "Conical2FSParams", 2); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 506 | SkString tName("t"); |
| 507 | SkString p0; // focalX |
| 508 | SkString p1; // 1 - focalX * focalX |
| 509 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 510 | args.fBuilder->getUniformVariable(fParamUni).appendArrayAccess(0, &p0); |
| 511 | args.fBuilder->getUniformVariable(fParamUni).appendArrayAccess(1, &p1); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 512 | |
| 513 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
egdaniel | 2d721d3 | 2015-11-11 13:06:05 -0800 | [diff] [blame^] | 514 | GrGLSLFragmentBuilder* fsBuilder = args.fBuilder->getFragmentShaderBuilder(); |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 515 | SkString coords2DString = fsBuilder->ensureFSCoords2D(args.fCoords, 0); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 516 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 517 | |
| 518 | // t = p.x * focal.x +/- sqrt(p.x^2 + (1 - focal.x^2) * p.y^2) |
| 519 | |
| 520 | // output will default to transparent black (we simply won't write anything |
| 521 | // else to it if invalid, instead of discarding or returning prematurely) |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 522 | fsBuilder->codeAppendf("\t%s = vec4(0.0,0.0,0.0,0.0);\n", args.fOutputColor); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 523 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 524 | fsBuilder->codeAppendf("\tfloat xs = %s.x * %s.x;\n", coords2D, coords2D); |
| 525 | fsBuilder->codeAppendf("\tfloat ys = %s.y * %s.y;\n", coords2D, coords2D); |
| 526 | fsBuilder->codeAppendf("\tfloat d = xs + %s * ys;\n", p1.c_str()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 527 | |
| 528 | // Must check to see if we flipped the circle order (to make sure start radius < end radius) |
| 529 | // If so we must also flip sign on sqrt |
| 530 | if (!fIsFlipped) { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 531 | fsBuilder->codeAppendf("\tfloat %s = %s.x * %s + sqrt(d);\n", tName.c_str(), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 532 | coords2D, p0.c_str()); |
| 533 | } else { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 534 | fsBuilder->codeAppendf("\tfloat %s = %s.x * %s - sqrt(d);\n", tName.c_str(), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 535 | coords2D, p0.c_str()); |
| 536 | } |
| 537 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 538 | fsBuilder->codeAppendf("\tif (%s >= 0.0 && d >= 0.0) {\n", tName.c_str()); |
| 539 | fsBuilder->codeAppend("\t\t"); |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 540 | this->emitColor(args.fBuilder, ge, tName.c_str(), args.fOutputColor, args.fInputColor, |
| 541 | args.fSamplers); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 542 | fsBuilder->codeAppend("\t}\n"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 543 | } |
| 544 | |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 545 | void GLFocalOutside2PtConicalEffect::onSetData(const GrGLSLProgramDataManager& pdman, |
| 546 | const GrProcessor& processor) { |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 547 | INHERITED::onSetData(pdman, processor); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 548 | const FocalOutside2PtConicalEffect& data = processor.cast<FocalOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 549 | SkASSERT(data.isFlipped() == fIsFlipped); |
| 550 | SkScalar focal = data.focal(); |
| 551 | |
| 552 | if (fCachedFocal != focal) { |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 553 | SkScalar oneMinus2F = 1.f - SkScalarMul(focal, focal); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 554 | |
| 555 | float values[2] = { |
| 556 | SkScalarToFloat(focal), |
| 557 | SkScalarToFloat(oneMinus2F), |
| 558 | }; |
| 559 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 560 | pdman.set1fv(fParamUni, 2, values); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 561 | fCachedFocal = focal; |
| 562 | } |
| 563 | } |
| 564 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 565 | void GLFocalOutside2PtConicalEffect::GenKey(const GrProcessor& processor, |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 566 | const GrGLSLCaps&, GrProcessorKeyBuilder* b) { |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 567 | uint32_t* key = b->add32n(2); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 568 | key[0] = GenBaseGradientKey(processor); |
| 569 | key[1] = processor.cast<FocalOutside2PtConicalEffect>().isFlipped(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 570 | } |
| 571 | |
| 572 | ////////////////////////////////////////////////////////////////////////////// |
| 573 | |
| 574 | class GLFocalInside2PtConicalEffect; |
| 575 | |
| 576 | class FocalInside2PtConicalEffect : public GrGradientEffect { |
| 577 | public: |
| 578 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 579 | static GrFragmentProcessor* Create(GrContext* ctx, |
| 580 | const SkTwoPointConicalGradient& shader, |
| 581 | const SkMatrix& matrix, |
| 582 | SkShader::TileMode tm, |
| 583 | SkScalar focalX) { |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 584 | return new FocalInside2PtConicalEffect(ctx, shader, matrix, tm, focalX); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 585 | } |
| 586 | |
| 587 | virtual ~FocalInside2PtConicalEffect() {} |
| 588 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 589 | const char* name() const override { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 590 | return "Two-Point Conical Gradient Focal Inside"; |
| 591 | } |
| 592 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 593 | SkScalar focal() const { return fFocalX; } |
| 594 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 595 | typedef GLFocalInside2PtConicalEffect GLProcessor; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 596 | |
| 597 | private: |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 598 | GrGLFragmentProcessor* onCreateGLInstance() const override; |
| 599 | |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame] | 600 | void onGetGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override; |
| 601 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 602 | bool onIsEqual(const GrFragmentProcessor& sBase) const override { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 603 | const FocalInside2PtConicalEffect& s = sBase.cast<FocalInside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 604 | return (INHERITED::onIsEqual(sBase) && |
| 605 | this->fFocalX == s.fFocalX); |
| 606 | } |
| 607 | |
| 608 | FocalInside2PtConicalEffect(GrContext* ctx, |
| 609 | const SkTwoPointConicalGradient& shader, |
| 610 | const SkMatrix& matrix, |
| 611 | SkShader::TileMode tm, |
| 612 | SkScalar focalX) |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 613 | : INHERITED(ctx, shader, matrix, tm), fFocalX(focalX) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 614 | this->initClassID<FocalInside2PtConicalEffect>(); |
| 615 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 616 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 617 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 618 | |
| 619 | SkScalar fFocalX; |
| 620 | |
| 621 | typedef GrGradientEffect INHERITED; |
| 622 | }; |
| 623 | |
| 624 | class GLFocalInside2PtConicalEffect : public GrGLGradientEffect { |
| 625 | public: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 626 | GLFocalInside2PtConicalEffect(const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 627 | virtual ~GLFocalInside2PtConicalEffect() {} |
| 628 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 629 | virtual void emitCode(EmitArgs&) override; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 630 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 631 | static void GenKey(const GrProcessor&, const GrGLSLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 632 | |
| 633 | protected: |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 634 | void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override; |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 635 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 636 | UniformHandle fFocalUni; |
| 637 | |
| 638 | const char* fVSVaryingName; |
| 639 | const char* fFSVaryingName; |
| 640 | |
| 641 | // @{ |
| 642 | /// Values last uploaded as uniforms |
| 643 | |
| 644 | SkScalar fCachedFocal; |
| 645 | |
| 646 | // @} |
| 647 | |
| 648 | private: |
| 649 | typedef GrGLGradientEffect INHERITED; |
| 650 | |
| 651 | }; |
| 652 | |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame] | 653 | void FocalInside2PtConicalEffect::onGetGLProcessorKey(const GrGLSLCaps& caps, |
egdaniel | 2d721d3 | 2015-11-11 13:06:05 -0800 | [diff] [blame^] | 654 | GrProcessorKeyBuilder* b) const { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 655 | GLFocalInside2PtConicalEffect::GenKey(*this, caps, b); |
| 656 | } |
| 657 | |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 658 | GrGLFragmentProcessor* FocalInside2PtConicalEffect::onCreateGLInstance() const { |
halcanary | 385fe4d | 2015-08-26 13:07:48 -0700 | [diff] [blame] | 659 | return new GLFocalInside2PtConicalEffect(*this); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 660 | } |
| 661 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 662 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(FocalInside2PtConicalEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 663 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 664 | /* |
| 665 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 666 | */ |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 667 | const GrFragmentProcessor* FocalInside2PtConicalEffect::TestCreate(GrProcessorTestData* d) { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 668 | SkPoint center1 = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()}; |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 669 | SkScalar radius1 = 0.f; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 670 | SkPoint center2; |
| 671 | SkScalar radius2; |
| 672 | do { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 673 | center2.set(d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 674 | // Below makes sure radius2 is larger enouch such that the focal point |
| 675 | // is inside the end circle |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 676 | SkScalar increase = d->fRandom->nextUScalar1(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 677 | SkPoint diff = center2 - center1; |
| 678 | SkScalar diffLen = diff.length(); |
| 679 | radius2 = diffLen + increase; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 680 | // If the circles are identical the factory will give us an empty shader. |
| 681 | } while (radius1 == radius2 && center1 == center2); |
| 682 | |
| 683 | SkColor colors[kMaxRandomGradientColors]; |
| 684 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 685 | SkScalar* stops = stopsArray; |
| 686 | SkShader::TileMode tm; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 687 | int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tm); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 688 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 689 | center2, radius2, |
| 690 | colors, stops, colorCount, |
| 691 | tm)); |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 692 | const GrFragmentProcessor* fp = shader->asFragmentProcessor(d->fContext, |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 693 | GrTest::TestMatrix(d->fRandom), NULL, kNone_SkFilterQuality); |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 694 | GrAlwaysAssert(fp); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 695 | return fp; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 696 | } |
| 697 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 698 | GLFocalInside2PtConicalEffect::GLFocalInside2PtConicalEffect(const GrProcessor&) |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 699 | : fVSVaryingName(nullptr) |
| 700 | , fFSVaryingName(nullptr) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 701 | , fCachedFocal(SK_ScalarMax) {} |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 702 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 703 | void GLFocalInside2PtConicalEffect::emitCode(EmitArgs& args) { |
| 704 | const FocalInside2PtConicalEffect& ge = args.fFp.cast<FocalInside2PtConicalEffect>(); |
| 705 | this->emitUniforms(args.fBuilder, ge); |
egdaniel | 2d721d3 | 2015-11-11 13:06:05 -0800 | [diff] [blame^] | 706 | fFocalUni = args.fBuilder->addUniform(GrGLSLProgramBuilder::kFragment_Visibility, |
| 707 | kFloat_GrSLType, kDefault_GrSLPrecision, |
| 708 | "Conical2FSParams"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 709 | SkString tName("t"); |
| 710 | |
| 711 | // this is the distance along x-axis from the end center to focal point in |
| 712 | // transformed coordinates |
egdaniel | 0d3f061 | 2015-10-21 10:45:48 -0700 | [diff] [blame] | 713 | GrGLSLShaderVar focal = args.fBuilder->getUniformVariable(fFocalUni); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 714 | |
| 715 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
egdaniel | 2d721d3 | 2015-11-11 13:06:05 -0800 | [diff] [blame^] | 716 | GrGLSLFragmentBuilder* fsBuilder = args.fBuilder->getFragmentShaderBuilder(); |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 717 | SkString coords2DString = fsBuilder->ensureFSCoords2D(args.fCoords, 0); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 718 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 719 | |
| 720 | // t = p.x * focalX + length(p) |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 721 | fsBuilder->codeAppendf("\tfloat %s = %s.x * %s + length(%s);\n", tName.c_str(), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 722 | coords2D, focal.c_str(), coords2D); |
| 723 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 724 | this->emitColor(args.fBuilder, ge, tName.c_str(), args.fOutputColor, args.fInputColor, |
| 725 | args.fSamplers); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 726 | } |
| 727 | |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 728 | void GLFocalInside2PtConicalEffect::onSetData(const GrGLSLProgramDataManager& pdman, |
| 729 | const GrProcessor& processor) { |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 730 | INHERITED::onSetData(pdman, processor); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 731 | const FocalInside2PtConicalEffect& data = processor.cast<FocalInside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 732 | SkScalar focal = data.focal(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 733 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 734 | if (fCachedFocal != focal) { |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 735 | pdman.set1f(fFocalUni, SkScalarToFloat(focal)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 736 | fCachedFocal = focal; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 737 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 738 | } |
| 739 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 740 | void GLFocalInside2PtConicalEffect::GenKey(const GrProcessor& processor, |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 741 | const GrGLSLCaps&, GrProcessorKeyBuilder* b) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 742 | b->add32(GenBaseGradientKey(processor)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 743 | } |
| 744 | |
| 745 | ////////////////////////////////////////////////////////////////////////////// |
| 746 | // Circle Conical Gradients |
| 747 | ////////////////////////////////////////////////////////////////////////////// |
| 748 | |
| 749 | struct CircleConicalInfo { |
| 750 | SkPoint fCenterEnd; |
| 751 | SkScalar fA; |
| 752 | SkScalar fB; |
| 753 | SkScalar fC; |
| 754 | }; |
| 755 | |
| 756 | // Returns focal distance along x-axis in transformed coords |
| 757 | static ConicalType set_matrix_circle_conical(const SkTwoPointConicalGradient& shader, |
| 758 | SkMatrix* invLMatrix, CircleConicalInfo* info) { |
| 759 | // Inverse of the current local matrix is passed in then, |
| 760 | // translate and scale such that start circle is on the origin and has radius 1 |
| 761 | const SkPoint& centerStart = shader.getStartCenter(); |
| 762 | const SkPoint& centerEnd = shader.getEndCenter(); |
| 763 | SkScalar radiusStart = shader.getStartRadius(); |
| 764 | SkScalar radiusEnd = shader.getEndRadius(); |
| 765 | |
| 766 | SkMatrix matrix; |
| 767 | |
| 768 | matrix.setTranslate(-centerStart.fX, -centerStart.fY); |
| 769 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 770 | SkScalar invStartRad = 1.f / radiusStart; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 771 | matrix.postScale(invStartRad, invStartRad); |
| 772 | |
| 773 | radiusEnd /= radiusStart; |
| 774 | |
| 775 | SkPoint centerEndTrans; |
| 776 | matrix.mapPoints(¢erEndTrans, ¢erEnd, 1); |
| 777 | |
| 778 | SkScalar A = centerEndTrans.fX * centerEndTrans.fX + centerEndTrans.fY * centerEndTrans.fY |
| 779 | - radiusEnd * radiusEnd + 2 * radiusEnd - 1; |
| 780 | |
| 781 | // Check to see if start circle is inside end circle with edges touching. |
| 782 | // If touching we return that it is of kEdge_ConicalType, and leave the matrix setting |
egdaniel | 8405ef9 | 2014-06-09 11:57:28 -0700 | [diff] [blame] | 783 | // to the edge shader. kEdgeErrorTol = 5 * kErrorTol was picked after manual testing |
| 784 | // so that C = 1 / A is stable, and the linear approximation used in the Edge shader is |
| 785 | // still accurate. |
| 786 | if (SkScalarAbs(A) < kEdgeErrorTol) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 787 | return kEdge_ConicalType; |
| 788 | } |
| 789 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 790 | SkScalar C = 1.f / A; |
| 791 | SkScalar B = (radiusEnd - 1.f) * C; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 792 | |
| 793 | matrix.postScale(C, C); |
| 794 | |
| 795 | invLMatrix->postConcat(matrix); |
| 796 | |
| 797 | info->fCenterEnd = centerEndTrans; |
| 798 | info->fA = A; |
| 799 | info->fB = B; |
| 800 | info->fC = C; |
| 801 | |
| 802 | // if A ends up being negative, the start circle is contained completely inside the end cirlce |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 803 | if (A < 0.f) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 804 | return kInside_ConicalType; |
| 805 | } |
| 806 | return kOutside_ConicalType; |
| 807 | } |
| 808 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 809 | class CircleInside2PtConicalEffect : public GrGradientEffect { |
| 810 | public: |
| 811 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 812 | static GrFragmentProcessor* Create(GrContext* ctx, |
| 813 | const SkTwoPointConicalGradient& shader, |
| 814 | const SkMatrix& matrix, |
| 815 | SkShader::TileMode tm, |
| 816 | const CircleConicalInfo& info) { |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 817 | return new CircleInside2PtConicalEffect(ctx, shader, matrix, tm, info); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 818 | } |
| 819 | |
| 820 | virtual ~CircleInside2PtConicalEffect() {} |
| 821 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 822 | const char* name() const override { return "Two-Point Conical Gradient Inside"; } |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 823 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 824 | SkScalar centerX() const { return fInfo.fCenterEnd.fX; } |
| 825 | SkScalar centerY() const { return fInfo.fCenterEnd.fY; } |
| 826 | SkScalar A() const { return fInfo.fA; } |
| 827 | SkScalar B() const { return fInfo.fB; } |
| 828 | SkScalar C() const { return fInfo.fC; } |
| 829 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 830 | private: |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 831 | GrGLFragmentProcessor* onCreateGLInstance() const override; |
| 832 | |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame] | 833 | virtual void onGetGLProcessorKey(const GrGLSLCaps& caps, |
| 834 | GrProcessorKeyBuilder* b) const override; |
| 835 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 836 | bool onIsEqual(const GrFragmentProcessor& sBase) const override { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 837 | const CircleInside2PtConicalEffect& s = sBase.cast<CircleInside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 838 | return (INHERITED::onIsEqual(sBase) && |
| 839 | this->fInfo.fCenterEnd == s.fInfo.fCenterEnd && |
| 840 | this->fInfo.fA == s.fInfo.fA && |
| 841 | this->fInfo.fB == s.fInfo.fB && |
| 842 | this->fInfo.fC == s.fInfo.fC); |
| 843 | } |
| 844 | |
| 845 | CircleInside2PtConicalEffect(GrContext* ctx, |
| 846 | const SkTwoPointConicalGradient& shader, |
| 847 | const SkMatrix& matrix, |
| 848 | SkShader::TileMode tm, |
| 849 | const CircleConicalInfo& info) |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 850 | : INHERITED(ctx, shader, matrix, tm), fInfo(info) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 851 | this->initClassID<CircleInside2PtConicalEffect>(); |
| 852 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 853 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 854 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 855 | |
| 856 | const CircleConicalInfo fInfo; |
| 857 | |
| 858 | typedef GrGradientEffect INHERITED; |
| 859 | }; |
| 860 | |
| 861 | class GLCircleInside2PtConicalEffect : public GrGLGradientEffect { |
| 862 | public: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 863 | GLCircleInside2PtConicalEffect(const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 864 | virtual ~GLCircleInside2PtConicalEffect() {} |
| 865 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 866 | virtual void emitCode(EmitArgs&) override; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 867 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 868 | static void GenKey(const GrProcessor&, const GrGLSLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 869 | |
| 870 | protected: |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 871 | void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override; |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 872 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 873 | UniformHandle fCenterUni; |
| 874 | UniformHandle fParamUni; |
| 875 | |
| 876 | const char* fVSVaryingName; |
| 877 | const char* fFSVaryingName; |
| 878 | |
| 879 | // @{ |
| 880 | /// Values last uploaded as uniforms |
| 881 | |
| 882 | SkScalar fCachedCenterX; |
| 883 | SkScalar fCachedCenterY; |
| 884 | SkScalar fCachedA; |
| 885 | SkScalar fCachedB; |
| 886 | SkScalar fCachedC; |
| 887 | |
| 888 | // @} |
| 889 | |
| 890 | private: |
| 891 | typedef GrGLGradientEffect INHERITED; |
| 892 | |
| 893 | }; |
| 894 | |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame] | 895 | void CircleInside2PtConicalEffect::onGetGLProcessorKey(const GrGLSLCaps& caps, |
egdaniel | 2d721d3 | 2015-11-11 13:06:05 -0800 | [diff] [blame^] | 896 | GrProcessorKeyBuilder* b) const { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 897 | GLCircleInside2PtConicalEffect::GenKey(*this, caps, b); |
| 898 | } |
| 899 | |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 900 | GrGLFragmentProcessor* CircleInside2PtConicalEffect::onCreateGLInstance() const { |
halcanary | 385fe4d | 2015-08-26 13:07:48 -0700 | [diff] [blame] | 901 | return new GLCircleInside2PtConicalEffect(*this); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 902 | } |
| 903 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 904 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(CircleInside2PtConicalEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 905 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 906 | /* |
| 907 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 908 | */ |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 909 | const GrFragmentProcessor* CircleInside2PtConicalEffect::TestCreate(GrProcessorTestData* d) { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 910 | SkPoint center1 = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()}; |
| 911 | SkScalar radius1 = d->fRandom->nextUScalar1() + 0.0001f; // make sure radius1 != 0 |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 912 | SkPoint center2; |
| 913 | SkScalar radius2; |
| 914 | do { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 915 | center2.set(d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 916 | // Below makes sure that circle one is contained within circle two |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 917 | SkScalar increase = d->fRandom->nextUScalar1(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 918 | SkPoint diff = center2 - center1; |
| 919 | SkScalar diffLen = diff.length(); |
| 920 | radius2 = radius1 + diffLen + increase; |
| 921 | // If the circles are identical the factory will give us an empty shader. |
| 922 | } while (radius1 == radius2 && center1 == center2); |
| 923 | |
| 924 | SkColor colors[kMaxRandomGradientColors]; |
| 925 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 926 | SkScalar* stops = stopsArray; |
| 927 | SkShader::TileMode tm; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 928 | int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tm); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 929 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 930 | center2, radius2, |
| 931 | colors, stops, colorCount, |
| 932 | tm)); |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 933 | const GrFragmentProcessor* fp = shader->asFragmentProcessor(d->fContext, |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 934 | GrTest::TestMatrix(d->fRandom), NULL, kNone_SkFilterQuality); |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 935 | GrAlwaysAssert(fp); |
joshualitt | 8ca93e7 | 2015-07-08 06:51:43 -0700 | [diff] [blame] | 936 | return fp; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 937 | } |
| 938 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 939 | GLCircleInside2PtConicalEffect::GLCircleInside2PtConicalEffect(const GrProcessor& processor) |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 940 | : fVSVaryingName(nullptr) |
| 941 | , fFSVaryingName(nullptr) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 942 | , fCachedCenterX(SK_ScalarMax) |
| 943 | , fCachedCenterY(SK_ScalarMax) |
| 944 | , fCachedA(SK_ScalarMax) |
| 945 | , fCachedB(SK_ScalarMax) |
| 946 | , fCachedC(SK_ScalarMax) {} |
| 947 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 948 | void GLCircleInside2PtConicalEffect::emitCode(EmitArgs& args) { |
| 949 | const CircleInside2PtConicalEffect& ge = args.fFp.cast<CircleInside2PtConicalEffect>(); |
| 950 | this->emitUniforms(args.fBuilder, ge); |
egdaniel | 2d721d3 | 2015-11-11 13:06:05 -0800 | [diff] [blame^] | 951 | fCenterUni = args.fBuilder->addUniform(GrGLSLProgramBuilder::kFragment_Visibility, |
| 952 | kVec2f_GrSLType, kDefault_GrSLPrecision, |
| 953 | "Conical2FSCenter"); |
| 954 | fParamUni = args.fBuilder->addUniform(GrGLSLProgramBuilder::kFragment_Visibility, |
| 955 | kVec3f_GrSLType, kDefault_GrSLPrecision, |
| 956 | "Conical2FSParams"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 957 | SkString tName("t"); |
| 958 | |
egdaniel | 0d3f061 | 2015-10-21 10:45:48 -0700 | [diff] [blame] | 959 | GrGLSLShaderVar center = args.fBuilder->getUniformVariable(fCenterUni); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 960 | // params.x = A |
| 961 | // params.y = B |
| 962 | // params.z = C |
egdaniel | 0d3f061 | 2015-10-21 10:45:48 -0700 | [diff] [blame] | 963 | GrGLSLShaderVar params = args.fBuilder->getUniformVariable(fParamUni); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 964 | |
| 965 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
egdaniel | 2d721d3 | 2015-11-11 13:06:05 -0800 | [diff] [blame^] | 966 | GrGLSLFragmentBuilder* fsBuilder = args.fBuilder->getFragmentShaderBuilder(); |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 967 | SkString coords2DString = fsBuilder->ensureFSCoords2D(args.fCoords, 0); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 968 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 969 | |
| 970 | // p = coords2D |
| 971 | // e = center end |
| 972 | // r = radius end |
| 973 | // A = dot(e, e) - r^2 + 2 * r - 1 |
| 974 | // B = (r -1) / A |
| 975 | // C = 1 / A |
| 976 | // d = dot(e, p) + B |
| 977 | // t = d +/- sqrt(d^2 - A * dot(p, p) + C) |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 978 | fsBuilder->codeAppendf("\tfloat pDotp = dot(%s, %s);\n", coords2D, coords2D); |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 979 | fsBuilder->codeAppendf("\tfloat d = dot(%s, %s) + %s.y;\n", coords2D, center.c_str(), |
| 980 | params.c_str()); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 981 | fsBuilder->codeAppendf("\tfloat %s = d + sqrt(d * d - %s.x * pDotp + %s.z);\n", |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 982 | tName.c_str(), params.c_str(), params.c_str()); |
| 983 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 984 | this->emitColor(args.fBuilder, ge, tName.c_str(), args.fOutputColor, args.fInputColor, |
| 985 | args.fSamplers); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 986 | } |
| 987 | |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 988 | void GLCircleInside2PtConicalEffect::onSetData(const GrGLSLProgramDataManager& pdman, |
| 989 | const GrProcessor& processor) { |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 990 | INHERITED::onSetData(pdman, processor); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 991 | const CircleInside2PtConicalEffect& data = processor.cast<CircleInside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 992 | SkScalar centerX = data.centerX(); |
| 993 | SkScalar centerY = data.centerY(); |
| 994 | SkScalar A = data.A(); |
| 995 | SkScalar B = data.B(); |
| 996 | SkScalar C = data.C(); |
| 997 | |
| 998 | if (fCachedCenterX != centerX || fCachedCenterY != centerY || |
| 999 | fCachedA != A || fCachedB != B || fCachedC != C) { |
| 1000 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 1001 | pdman.set2f(fCenterUni, SkScalarToFloat(centerX), SkScalarToFloat(centerY)); |
| 1002 | pdman.set3f(fParamUni, SkScalarToFloat(A), SkScalarToFloat(B), SkScalarToFloat(C)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1003 | |
| 1004 | fCachedCenterX = centerX; |
| 1005 | fCachedCenterY = centerY; |
| 1006 | fCachedA = A; |
| 1007 | fCachedB = B; |
| 1008 | fCachedC = C; |
| 1009 | } |
| 1010 | } |
| 1011 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1012 | void GLCircleInside2PtConicalEffect::GenKey(const GrProcessor& processor, |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 1013 | const GrGLSLCaps&, GrProcessorKeyBuilder* b) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1014 | b->add32(GenBaseGradientKey(processor)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1015 | } |
| 1016 | |
| 1017 | ////////////////////////////////////////////////////////////////////////////// |
| 1018 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1019 | class CircleOutside2PtConicalEffect : public GrGradientEffect { |
| 1020 | public: |
| 1021 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1022 | static GrFragmentProcessor* Create(GrContext* ctx, |
| 1023 | const SkTwoPointConicalGradient& shader, |
| 1024 | const SkMatrix& matrix, |
| 1025 | SkShader::TileMode tm, |
| 1026 | const CircleConicalInfo& info) { |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 1027 | return new CircleOutside2PtConicalEffect(ctx, shader, matrix, tm, info); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1028 | } |
| 1029 | |
| 1030 | virtual ~CircleOutside2PtConicalEffect() {} |
| 1031 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 1032 | const char* name() const override { return "Two-Point Conical Gradient Outside"; } |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 1033 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1034 | SkScalar centerX() const { return fInfo.fCenterEnd.fX; } |
| 1035 | SkScalar centerY() const { return fInfo.fCenterEnd.fY; } |
| 1036 | SkScalar A() const { return fInfo.fA; } |
| 1037 | SkScalar B() const { return fInfo.fB; } |
| 1038 | SkScalar C() const { return fInfo.fC; } |
| 1039 | SkScalar tLimit() const { return fTLimit; } |
| 1040 | bool isFlipped() const { return fIsFlipped; } |
| 1041 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1042 | private: |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 1043 | GrGLFragmentProcessor* onCreateGLInstance() const override; |
| 1044 | |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame] | 1045 | void onGetGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override; |
| 1046 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 1047 | bool onIsEqual(const GrFragmentProcessor& sBase) const override { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 1048 | const CircleOutside2PtConicalEffect& s = sBase.cast<CircleOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1049 | return (INHERITED::onIsEqual(sBase) && |
| 1050 | this->fInfo.fCenterEnd == s.fInfo.fCenterEnd && |
| 1051 | this->fInfo.fA == s.fInfo.fA && |
| 1052 | this->fInfo.fB == s.fInfo.fB && |
| 1053 | this->fInfo.fC == s.fInfo.fC && |
| 1054 | this->fTLimit == s.fTLimit && |
| 1055 | this->fIsFlipped == s.fIsFlipped); |
| 1056 | } |
| 1057 | |
| 1058 | CircleOutside2PtConicalEffect(GrContext* ctx, |
| 1059 | const SkTwoPointConicalGradient& shader, |
| 1060 | const SkMatrix& matrix, |
| 1061 | SkShader::TileMode tm, |
| 1062 | const CircleConicalInfo& info) |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 1063 | : INHERITED(ctx, shader, matrix, tm), fInfo(info) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 1064 | this->initClassID<CircleOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1065 | if (shader.getStartRadius() != shader.getEndRadius()) { |
reed | 80ea19c | 2015-05-12 10:37:34 -0700 | [diff] [blame] | 1066 | fTLimit = shader.getStartRadius() / (shader.getStartRadius() - shader.getEndRadius()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1067 | } else { |
| 1068 | fTLimit = SK_ScalarMin; |
| 1069 | } |
| 1070 | |
| 1071 | fIsFlipped = shader.isFlippedGrad(); |
| 1072 | } |
| 1073 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1074 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1075 | |
| 1076 | const CircleConicalInfo fInfo; |
| 1077 | SkScalar fTLimit; |
| 1078 | bool fIsFlipped; |
| 1079 | |
| 1080 | typedef GrGradientEffect INHERITED; |
| 1081 | }; |
| 1082 | |
| 1083 | class GLCircleOutside2PtConicalEffect : public GrGLGradientEffect { |
| 1084 | public: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 1085 | GLCircleOutside2PtConicalEffect(const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1086 | virtual ~GLCircleOutside2PtConicalEffect() {} |
| 1087 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 1088 | virtual void emitCode(EmitArgs&) override; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1089 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 1090 | static void GenKey(const GrProcessor&, const GrGLSLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1091 | |
| 1092 | protected: |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 1093 | void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override; |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 1094 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1095 | UniformHandle fCenterUni; |
| 1096 | UniformHandle fParamUni; |
| 1097 | |
| 1098 | const char* fVSVaryingName; |
| 1099 | const char* fFSVaryingName; |
| 1100 | |
| 1101 | bool fIsFlipped; |
| 1102 | |
| 1103 | // @{ |
| 1104 | /// Values last uploaded as uniforms |
| 1105 | |
| 1106 | SkScalar fCachedCenterX; |
| 1107 | SkScalar fCachedCenterY; |
| 1108 | SkScalar fCachedA; |
| 1109 | SkScalar fCachedB; |
| 1110 | SkScalar fCachedC; |
| 1111 | SkScalar fCachedTLimit; |
| 1112 | |
| 1113 | // @} |
| 1114 | |
| 1115 | private: |
| 1116 | typedef GrGLGradientEffect INHERITED; |
| 1117 | |
| 1118 | }; |
| 1119 | |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame] | 1120 | void CircleOutside2PtConicalEffect::onGetGLProcessorKey(const GrGLSLCaps& caps, |
egdaniel | 2d721d3 | 2015-11-11 13:06:05 -0800 | [diff] [blame^] | 1121 | GrProcessorKeyBuilder* b) const { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 1122 | GLCircleOutside2PtConicalEffect::GenKey(*this, caps, b); |
| 1123 | } |
| 1124 | |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 1125 | GrGLFragmentProcessor* CircleOutside2PtConicalEffect::onCreateGLInstance() const { |
halcanary | 385fe4d | 2015-08-26 13:07:48 -0700 | [diff] [blame] | 1126 | return new GLCircleOutside2PtConicalEffect(*this); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1127 | } |
| 1128 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1129 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(CircleOutside2PtConicalEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1130 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 1131 | /* |
| 1132 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 1133 | */ |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 1134 | const GrFragmentProcessor* CircleOutside2PtConicalEffect::TestCreate(GrProcessorTestData* d) { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 1135 | SkPoint center1 = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()}; |
| 1136 | SkScalar radius1 = d->fRandom->nextUScalar1() + 0.0001f; // make sure radius1 != 0 |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1137 | SkPoint center2; |
| 1138 | SkScalar radius2; |
| 1139 | SkScalar diffLen; |
| 1140 | do { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 1141 | center2.set(d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1142 | // If the circles share a center than we can't be in the outside case |
| 1143 | } while (center1 == center2); |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 1144 | SkPoint diff = center2 - center1; |
| 1145 | diffLen = diff.length(); |
| 1146 | // Below makes sure that circle one is not contained within circle two |
| 1147 | // and have radius2 >= radius to match sorting on cpu side |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 1148 | radius2 = radius1 + d->fRandom->nextRangeF(0.f, diffLen); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1149 | |
| 1150 | SkColor colors[kMaxRandomGradientColors]; |
| 1151 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 1152 | SkScalar* stops = stopsArray; |
| 1153 | SkShader::TileMode tm; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 1154 | int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tm); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1155 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 1156 | center2, radius2, |
| 1157 | colors, stops, colorCount, |
| 1158 | tm)); |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 1159 | const GrFragmentProcessor* fp = shader->asFragmentProcessor( |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 1160 | d->fContext,GrTest::TestMatrix(d->fRandom), NULL, kNone_SkFilterQuality); |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 1161 | GrAlwaysAssert(fp); |
joshualitt | 8ca93e7 | 2015-07-08 06:51:43 -0700 | [diff] [blame] | 1162 | return fp; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1163 | } |
| 1164 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 1165 | GLCircleOutside2PtConicalEffect::GLCircleOutside2PtConicalEffect(const GrProcessor& processor) |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 1166 | : fVSVaryingName(nullptr) |
| 1167 | , fFSVaryingName(nullptr) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1168 | , fCachedCenterX(SK_ScalarMax) |
| 1169 | , fCachedCenterY(SK_ScalarMax) |
| 1170 | , fCachedA(SK_ScalarMax) |
| 1171 | , fCachedB(SK_ScalarMax) |
| 1172 | , fCachedC(SK_ScalarMax) |
| 1173 | , fCachedTLimit(SK_ScalarMax) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1174 | const CircleOutside2PtConicalEffect& data = processor.cast<CircleOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1175 | fIsFlipped = data.isFlipped(); |
| 1176 | } |
| 1177 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 1178 | void GLCircleOutside2PtConicalEffect::emitCode(EmitArgs& args) { |
| 1179 | const CircleOutside2PtConicalEffect& ge = args.fFp.cast<CircleOutside2PtConicalEffect>(); |
| 1180 | this->emitUniforms(args.fBuilder, ge); |
egdaniel | 2d721d3 | 2015-11-11 13:06:05 -0800 | [diff] [blame^] | 1181 | fCenterUni = args.fBuilder->addUniform(GrGLSLProgramBuilder::kFragment_Visibility, |
| 1182 | kVec2f_GrSLType, kDefault_GrSLPrecision, |
| 1183 | "Conical2FSCenter"); |
| 1184 | fParamUni = args.fBuilder->addUniform(GrGLSLProgramBuilder::kFragment_Visibility, |
| 1185 | kVec4f_GrSLType, kDefault_GrSLPrecision, |
| 1186 | "Conical2FSParams"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1187 | SkString tName("t"); |
| 1188 | |
egdaniel | 0d3f061 | 2015-10-21 10:45:48 -0700 | [diff] [blame] | 1189 | GrGLSLShaderVar center = args.fBuilder->getUniformVariable(fCenterUni); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1190 | // params.x = A |
| 1191 | // params.y = B |
| 1192 | // params.z = C |
egdaniel | 0d3f061 | 2015-10-21 10:45:48 -0700 | [diff] [blame] | 1193 | GrGLSLShaderVar params = args.fBuilder->getUniformVariable(fParamUni); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1194 | |
| 1195 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
egdaniel | 2d721d3 | 2015-11-11 13:06:05 -0800 | [diff] [blame^] | 1196 | GrGLSLFragmentBuilder* fsBuilder = args.fBuilder->getFragmentShaderBuilder(); |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 1197 | SkString coords2DString = fsBuilder->ensureFSCoords2D(args.fCoords, 0); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 1198 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1199 | |
| 1200 | // output will default to transparent black (we simply won't write anything |
| 1201 | // else to it if invalid, instead of discarding or returning prematurely) |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 1202 | fsBuilder->codeAppendf("\t%s = vec4(0.0,0.0,0.0,0.0);\n", args.fOutputColor); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1203 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1204 | // p = coords2D |
| 1205 | // e = center end |
| 1206 | // r = radius end |
| 1207 | // A = dot(e, e) - r^2 + 2 * r - 1 |
| 1208 | // B = (r -1) / A |
| 1209 | // C = 1 / A |
| 1210 | // d = dot(e, p) + B |
| 1211 | // t = d +/- sqrt(d^2 - A * dot(p, p) + C) |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1212 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1213 | fsBuilder->codeAppendf("\tfloat pDotp = dot(%s, %s);\n", coords2D, coords2D); |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 1214 | fsBuilder->codeAppendf("\tfloat d = dot(%s, %s) + %s.y;\n", coords2D, center.c_str(), |
| 1215 | params.c_str()); |
| 1216 | fsBuilder->codeAppendf("\tfloat deter = d * d - %s.x * pDotp + %s.z;\n", params.c_str(), |
| 1217 | params.c_str()); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1218 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1219 | // Must check to see if we flipped the circle order (to make sure start radius < end radius) |
| 1220 | // If so we must also flip sign on sqrt |
| 1221 | if (!fIsFlipped) { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1222 | fsBuilder->codeAppendf("\tfloat %s = d + sqrt(deter);\n", tName.c_str()); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1223 | } else { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1224 | fsBuilder->codeAppendf("\tfloat %s = d - sqrt(deter);\n", tName.c_str()); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1225 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1226 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1227 | fsBuilder->codeAppendf("\tif (%s >= %s.w && deter >= 0.0) {\n", tName.c_str(), params.c_str()); |
| 1228 | fsBuilder->codeAppend("\t\t"); |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 1229 | this->emitColor(args.fBuilder, ge, tName.c_str(), args.fOutputColor, args.fInputColor, |
| 1230 | args.fSamplers); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1231 | fsBuilder->codeAppend("\t}\n"); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1232 | } |
| 1233 | |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 1234 | void GLCircleOutside2PtConicalEffect::onSetData(const GrGLSLProgramDataManager& pdman, |
| 1235 | const GrProcessor& processor) { |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 1236 | INHERITED::onSetData(pdman, processor); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1237 | const CircleOutside2PtConicalEffect& data = processor.cast<CircleOutside2PtConicalEffect>(); |
commit-bot@chromium.org | 44d83c1 | 2014-04-21 13:10:25 +0000 | [diff] [blame] | 1238 | SkASSERT(data.isFlipped() == fIsFlipped); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1239 | SkScalar centerX = data.centerX(); |
| 1240 | SkScalar centerY = data.centerY(); |
| 1241 | SkScalar A = data.A(); |
| 1242 | SkScalar B = data.B(); |
| 1243 | SkScalar C = data.C(); |
| 1244 | SkScalar tLimit = data.tLimit(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1245 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1246 | if (fCachedCenterX != centerX || fCachedCenterY != centerY || |
| 1247 | fCachedA != A || fCachedB != B || fCachedC != C || fCachedTLimit != tLimit) { |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1248 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 1249 | pdman.set2f(fCenterUni, SkScalarToFloat(centerX), SkScalarToFloat(centerY)); |
| 1250 | pdman.set4f(fParamUni, SkScalarToFloat(A), SkScalarToFloat(B), SkScalarToFloat(C), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1251 | SkScalarToFloat(tLimit)); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1252 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1253 | fCachedCenterX = centerX; |
| 1254 | fCachedCenterY = centerY; |
| 1255 | fCachedA = A; |
| 1256 | fCachedB = B; |
| 1257 | fCachedC = C; |
| 1258 | fCachedTLimit = tLimit; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1259 | } |
| 1260 | } |
| 1261 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1262 | void GLCircleOutside2PtConicalEffect::GenKey(const GrProcessor& processor, |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 1263 | const GrGLSLCaps&, GrProcessorKeyBuilder* b) { |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 1264 | uint32_t* key = b->add32n(2); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1265 | key[0] = GenBaseGradientKey(processor); |
| 1266 | key[1] = processor.cast<CircleOutside2PtConicalEffect>().isFlipped(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1267 | } |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1268 | |
| 1269 | ////////////////////////////////////////////////////////////////////////////// |
| 1270 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1271 | GrFragmentProcessor* Gr2PtConicalGradientEffect::Create(GrContext* ctx, |
| 1272 | const SkTwoPointConicalGradient& shader, |
| 1273 | SkShader::TileMode tm, |
| 1274 | const SkMatrix* localMatrix) { |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1275 | SkMatrix matrix; |
| 1276 | if (!shader.getLocalMatrix().invert(&matrix)) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 1277 | return nullptr; |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1278 | } |
commit-bot@chromium.org | 96fb748 | 2014-05-09 20:28:11 +0000 | [diff] [blame] | 1279 | if (localMatrix) { |
| 1280 | SkMatrix inv; |
| 1281 | if (!localMatrix->invert(&inv)) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 1282 | return nullptr; |
commit-bot@chromium.org | 96fb748 | 2014-05-09 20:28:11 +0000 | [diff] [blame] | 1283 | } |
| 1284 | matrix.postConcat(inv); |
| 1285 | } |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1286 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1287 | if (shader.getStartRadius() < kErrorTol) { |
| 1288 | SkScalar focalX; |
| 1289 | ConicalType type = set_matrix_focal_conical(shader, &matrix, &focalX); |
| 1290 | if (type == kInside_ConicalType) { |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 1291 | return FocalInside2PtConicalEffect::Create(ctx, shader, matrix, tm, focalX); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1292 | } else if(type == kEdge_ConicalType) { |
| 1293 | set_matrix_edge_conical(shader, &matrix); |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 1294 | return Edge2PtConicalEffect::Create(ctx, shader, matrix, tm); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1295 | } else { |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 1296 | return FocalOutside2PtConicalEffect::Create(ctx, shader, matrix, tm, focalX); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1297 | } |
| 1298 | } |
| 1299 | |
| 1300 | CircleConicalInfo info; |
| 1301 | ConicalType type = set_matrix_circle_conical(shader, &matrix, &info); |
| 1302 | |
| 1303 | if (type == kInside_ConicalType) { |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 1304 | return CircleInside2PtConicalEffect::Create(ctx, shader, matrix, tm, info); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1305 | } else if (type == kEdge_ConicalType) { |
| 1306 | set_matrix_edge_conical(shader, &matrix); |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 1307 | return Edge2PtConicalEffect::Create(ctx, shader, matrix, tm); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1308 | } else { |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 1309 | return CircleOutside2PtConicalEffect::Create(ctx, shader, matrix, tm, info); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1310 | } |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1311 | } |
| 1312 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1313 | #endif |