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" |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 15 | #include "gl/builders/GrGLProgramBuilder.h" |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 16 | // For brevity |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 17 | typedef GrGLProgramDataManager::UniformHandle UniformHandle; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 18 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 19 | static const SkScalar kErrorTol = 0.00001f; |
egdaniel | 8405ef9 | 2014-06-09 11:57:28 -0700 | [diff] [blame] | 20 | static const SkScalar kEdgeErrorTol = 5.f * kErrorTol; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 21 | |
| 22 | /** |
| 23 | * We have three general cases for 2pt conical gradients. First we always assume that |
| 24 | * the start radius <= end radius. Our first case (kInside_) is when the start circle |
| 25 | * is completely enclosed by the end circle. The second case (kOutside_) is the case |
| 26 | * when the start circle is either completely outside the end circle or the circles |
| 27 | * overlap. The final case (kEdge_) is when the start circle is inside the end one, |
| 28 | * but the two are just barely touching at 1 point along their edges. |
| 29 | */ |
| 30 | enum ConicalType { |
| 31 | kInside_ConicalType, |
| 32 | kOutside_ConicalType, |
| 33 | kEdge_ConicalType, |
| 34 | }; |
| 35 | |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 36 | ////////////////////////////////////////////////////////////////////////////// |
| 37 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 38 | static void set_matrix_edge_conical(const SkTwoPointConicalGradient& shader, |
| 39 | SkMatrix* invLMatrix) { |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 40 | // Inverse of the current local matrix is passed in then, |
| 41 | // translate to center1, rotate so center2 is on x axis. |
| 42 | const SkPoint& center1 = shader.getStartCenter(); |
| 43 | const SkPoint& center2 = shader.getEndCenter(); |
| 44 | |
| 45 | invLMatrix->postTranslate(-center1.fX, -center1.fY); |
| 46 | |
| 47 | SkPoint diff = center2 - center1; |
| 48 | SkScalar diffLen = diff.length(); |
| 49 | if (0 != diffLen) { |
| 50 | SkScalar invDiffLen = SkScalarInvert(diffLen); |
| 51 | SkMatrix rot; |
| 52 | rot.setSinCos(-SkScalarMul(invDiffLen, diff.fY), |
| 53 | SkScalarMul(invDiffLen, diff.fX)); |
| 54 | invLMatrix->postConcat(rot); |
| 55 | } |
| 56 | } |
| 57 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 58 | class Edge2PtConicalEffect : public GrGradientEffect { |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 59 | public: |
| 60 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 61 | static GrFragmentProcessor* Create(GrContext* ctx, |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 62 | GrProcessorDataManager* procDataManager, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 63 | const SkTwoPointConicalGradient& shader, |
| 64 | const SkMatrix& matrix, |
| 65 | SkShader::TileMode tm) { |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 66 | return SkNEW_ARGS(Edge2PtConicalEffect, (ctx, procDataManager, shader, matrix, tm)); |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 67 | } |
| 68 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 69 | virtual ~Edge2PtConicalEffect() {} |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 70 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 71 | const char* name() const override { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 72 | return "Two-Point Conical Gradient Edge Touching"; |
| 73 | } |
| 74 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 75 | GrGLFragmentProcessor* createGLInstance() const override; |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 76 | |
| 77 | // 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] | 78 | SkScalar center() const { return fCenterX1; } |
| 79 | SkScalar diffRadius() const { return fDiffRadius; } |
| 80 | SkScalar radius() const { return fRadius0; } |
| 81 | |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 82 | private: |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame^] | 83 | void onGetGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override; |
| 84 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 85 | bool onIsEqual(const GrFragmentProcessor& sBase) const override { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 86 | const Edge2PtConicalEffect& s = sBase.cast<Edge2PtConicalEffect>(); |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 87 | return (INHERITED::onIsEqual(sBase) && |
| 88 | this->fCenterX1 == s.fCenterX1 && |
| 89 | this->fRadius0 == s.fRadius0 && |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 90 | this->fDiffRadius == s.fDiffRadius); |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 91 | } |
| 92 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 93 | Edge2PtConicalEffect(GrContext* ctx, |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 94 | GrProcessorDataManager* procDataManager, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 95 | const SkTwoPointConicalGradient& shader, |
| 96 | const SkMatrix& matrix, |
| 97 | SkShader::TileMode tm) |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 98 | : INHERITED(ctx, procDataManager, 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; |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 148 | void setData(const GrGLProgramDataManager&, const GrProcessor&) override; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 149 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 150 | static void GenKey(const GrProcessor&, const GrGLSLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 151 | |
| 152 | protected: |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 153 | UniformHandle fParamUni; |
| 154 | |
| 155 | const char* fVSVaryingName; |
| 156 | const char* fFSVaryingName; |
| 157 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 158 | // @{ |
| 159 | /// Values last uploaded as uniforms |
| 160 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 161 | SkScalar fCachedRadius; |
| 162 | SkScalar fCachedDiffRadius; |
| 163 | |
| 164 | // @} |
| 165 | |
| 166 | private: |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 167 | typedef GrGLGradientEffect INHERITED; |
| 168 | |
| 169 | }; |
| 170 | |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame^] | 171 | void Edge2PtConicalEffect::onGetGLProcessorKey(const GrGLSLCaps& caps, |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 172 | GrProcessorKeyBuilder* b) const { |
| 173 | GLEdge2PtConicalEffect::GenKey(*this, caps, b); |
| 174 | } |
| 175 | |
| 176 | GrGLFragmentProcessor* Edge2PtConicalEffect::createGLInstance() const { |
| 177 | return SkNEW_ARGS(GLEdge2PtConicalEffect, (*this)); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 178 | } |
skia.committer@gmail.com | 221b911 | 2014-04-04 03:04:32 +0000 | [diff] [blame] | 179 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 180 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(Edge2PtConicalEffect); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 181 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 182 | /* |
| 183 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 184 | */ |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 185 | GrFragmentProcessor* Edge2PtConicalEffect::TestCreate(GrProcessorTestData* d) { |
| 186 | SkPoint center1 = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()}; |
| 187 | SkScalar radius1 = d->fRandom->nextUScalar1(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 188 | SkPoint center2; |
| 189 | SkScalar radius2; |
| 190 | do { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 191 | center2.set(d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 192 | // If the circles are identical the factory will give us an empty shader. |
| 193 | // This will happen if we pick identical centers |
| 194 | } while (center1 == center2); |
| 195 | |
| 196 | // Below makes sure that circle one is contained within circle two |
| 197 | // and both circles are touching on an edge |
| 198 | SkPoint diff = center2 - center1; |
| 199 | SkScalar diffLen = diff.length(); |
| 200 | radius2 = radius1 + diffLen; |
| 201 | |
| 202 | SkColor colors[kMaxRandomGradientColors]; |
| 203 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 204 | SkScalar* stops = stopsArray; |
| 205 | SkShader::TileMode tm; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 206 | int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tm); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 207 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 208 | center2, radius2, |
| 209 | colors, stops, colorCount, |
| 210 | tm)); |
| 211 | SkPaint paint; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 212 | GrFragmentProcessor* fp; |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 213 | GrColor paintColor; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 214 | SkAssertResult(shader->asFragmentProcessor(d->fContext, paint, |
| 215 | GrTest::TestMatrix(d->fRandom), NULL, |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 216 | &paintColor, d->fProcDataManager, &fp)); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 217 | return fp; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 218 | } |
| 219 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 220 | GLEdge2PtConicalEffect::GLEdge2PtConicalEffect(const GrProcessor&) |
| 221 | : fVSVaryingName(NULL) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 222 | , fFSVaryingName(NULL) |
| 223 | , fCachedRadius(-SK_ScalarMax) |
| 224 | , fCachedDiffRadius(-SK_ScalarMax) {} |
| 225 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 226 | void GLEdge2PtConicalEffect::emitCode(EmitArgs& args) { |
| 227 | const Edge2PtConicalEffect& ge = args.fFp.cast<Edge2PtConicalEffect>(); |
| 228 | this->emitUniforms(args.fBuilder, ge); |
| 229 | fParamUni = args.fBuilder->addUniformArray(GrGLProgramBuilder::kFragment_Visibility, |
bsalomon | 422f56f | 2014-12-09 10:18:12 -0800 | [diff] [blame] | 230 | kFloat_GrSLType, kDefault_GrSLPrecision, |
| 231 | "Conical2FSParams", 3); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 232 | |
| 233 | SkString cName("c"); |
| 234 | SkString tName("t"); |
| 235 | SkString p0; // start radius |
| 236 | SkString p1; // start radius squared |
| 237 | SkString p2; // difference in radii (r1 - r0) |
| 238 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 239 | args.fBuilder->getUniformVariable(fParamUni).appendArrayAccess(0, &p0); |
| 240 | args.fBuilder->getUniformVariable(fParamUni).appendArrayAccess(1, &p1); |
| 241 | args.fBuilder->getUniformVariable(fParamUni).appendArrayAccess(2, &p2); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 242 | |
| 243 | // We interpolate the linear component in coords[1]. |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 244 | SkASSERT(args.fCoords[0].getType() == args.fCoords[1].getType()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 245 | const char* coords2D; |
| 246 | SkString bVar; |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 247 | GrGLFragmentBuilder* fsBuilder = args.fBuilder->getFragmentShaderBuilder(); |
| 248 | if (kVec3f_GrSLType == args.fCoords[0].getType()) { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 249 | 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] | 250 | args.fCoords[0].c_str(), args.fCoords[0].c_str(), |
| 251 | args.fCoords[1].c_str(), args.fCoords[1].c_str()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 252 | coords2D = "interpolants.xy"; |
| 253 | bVar = "interpolants.z"; |
| 254 | } else { |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 255 | coords2D = args.fCoords[0].c_str(); |
| 256 | bVar.printf("%s.x", args.fCoords[1].c_str()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 257 | } |
| 258 | |
| 259 | // output will default to transparent black (we simply won't write anything |
| 260 | // else to it if invalid, instead of discarding or returning prematurely) |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 261 | 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] | 262 | |
| 263 | // c = (x^2)+(y^2) - params[1] |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 264 | fsBuilder->codeAppendf("\tfloat %s = dot(%s, %s) - %s;\n", |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 265 | cName.c_str(), coords2D, coords2D, p1.c_str()); |
| 266 | |
| 267 | // linear case: t = -c/b |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 268 | fsBuilder->codeAppendf("\tfloat %s = -(%s / %s);\n", tName.c_str(), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 269 | cName.c_str(), bVar.c_str()); |
| 270 | |
| 271 | // if r(t) > 0, then t will be the x coordinate |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 272 | 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] | 273 | p2.c_str(), p0.c_str()); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 274 | fsBuilder->codeAppend("\t"); |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 275 | this->emitColor(args.fBuilder, ge, tName.c_str(), args.fOutputColor, args.fInputColor, |
| 276 | args.fSamplers); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 277 | fsBuilder->codeAppend("\t}\n"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 278 | } |
| 279 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 280 | void GLEdge2PtConicalEffect::setData(const GrGLProgramDataManager& pdman, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 281 | const GrProcessor& processor) { |
| 282 | INHERITED::setData(pdman, processor); |
| 283 | const Edge2PtConicalEffect& data = processor.cast<Edge2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 284 | SkScalar radius0 = data.radius(); |
| 285 | SkScalar diffRadius = data.diffRadius(); |
| 286 | |
| 287 | if (fCachedRadius != radius0 || |
| 288 | fCachedDiffRadius != diffRadius) { |
| 289 | |
| 290 | float values[3] = { |
| 291 | SkScalarToFloat(radius0), |
| 292 | SkScalarToFloat(SkScalarMul(radius0, radius0)), |
| 293 | SkScalarToFloat(diffRadius) |
| 294 | }; |
| 295 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 296 | pdman.set1fv(fParamUni, 3, values); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 297 | fCachedRadius = radius0; |
| 298 | fCachedDiffRadius = diffRadius; |
| 299 | } |
| 300 | } |
| 301 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 302 | void GLEdge2PtConicalEffect::GenKey(const GrProcessor& processor, |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 303 | const GrGLSLCaps&, GrProcessorKeyBuilder* b) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 304 | b->add32(GenBaseGradientKey(processor)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 305 | } |
| 306 | |
| 307 | ////////////////////////////////////////////////////////////////////////////// |
| 308 | // Focal Conical Gradients |
| 309 | ////////////////////////////////////////////////////////////////////////////// |
| 310 | |
| 311 | static ConicalType set_matrix_focal_conical(const SkTwoPointConicalGradient& shader, |
| 312 | SkMatrix* invLMatrix, SkScalar* focalX) { |
| 313 | // Inverse of the current local matrix is passed in then, |
| 314 | // translate, scale, and rotate such that endCircle is unit circle on x-axis, |
| 315 | // and focal point is at the origin. |
| 316 | ConicalType conicalType; |
| 317 | const SkPoint& focal = shader.getStartCenter(); |
| 318 | const SkPoint& centerEnd = shader.getEndCenter(); |
| 319 | SkScalar radius = shader.getEndRadius(); |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 320 | SkScalar invRadius = 1.f / radius; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 321 | |
| 322 | SkMatrix matrix; |
| 323 | |
| 324 | matrix.setTranslate(-centerEnd.fX, -centerEnd.fY); |
| 325 | matrix.postScale(invRadius, invRadius); |
| 326 | |
| 327 | SkPoint focalTrans; |
| 328 | matrix.mapPoints(&focalTrans, &focal, 1); |
| 329 | *focalX = focalTrans.length(); |
| 330 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 331 | if (0.f != *focalX) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 332 | SkScalar invFocalX = SkScalarInvert(*focalX); |
| 333 | SkMatrix rot; |
| 334 | rot.setSinCos(-SkScalarMul(invFocalX, focalTrans.fY), |
| 335 | SkScalarMul(invFocalX, focalTrans.fX)); |
| 336 | matrix.postConcat(rot); |
| 337 | } |
| 338 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 339 | matrix.postTranslate(-(*focalX), 0.f); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 340 | |
| 341 | // If the focal point is touching the edge of the circle it will |
| 342 | // cause a degenerate case that must be handled separately |
egdaniel | 8405ef9 | 2014-06-09 11:57:28 -0700 | [diff] [blame] | 343 | // kEdgeErrorTol = 5 * kErrorTol was picked after manual testing the |
| 344 | // stability trade off versus the linear approx used in the Edge Shader |
| 345 | if (SkScalarAbs(1.f - (*focalX)) < kEdgeErrorTol) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 346 | return kEdge_ConicalType; |
| 347 | } |
| 348 | |
| 349 | // Scale factor 1 / (1 - focalX * focalX) |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 350 | SkScalar oneMinusF2 = 1.f - SkScalarMul(*focalX, *focalX); |
reed | 80ea19c | 2015-05-12 10:37:34 -0700 | [diff] [blame] | 351 | SkScalar s = SkScalarInvert(oneMinusF2); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 352 | |
| 353 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 354 | if (s >= 0.f) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 355 | conicalType = kInside_ConicalType; |
| 356 | matrix.postScale(s, s * SkScalarSqrt(oneMinusF2)); |
| 357 | } else { |
| 358 | conicalType = kOutside_ConicalType; |
| 359 | matrix.postScale(s, s); |
| 360 | } |
| 361 | |
| 362 | invLMatrix->postConcat(matrix); |
| 363 | |
| 364 | return conicalType; |
| 365 | } |
| 366 | |
| 367 | ////////////////////////////////////////////////////////////////////////////// |
| 368 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 369 | class FocalOutside2PtConicalEffect : public GrGradientEffect { |
| 370 | public: |
| 371 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 372 | static GrFragmentProcessor* Create(GrContext* ctx, |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 373 | GrProcessorDataManager* procDataManager, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 374 | const SkTwoPointConicalGradient& shader, |
| 375 | const SkMatrix& matrix, |
| 376 | SkShader::TileMode tm, |
| 377 | SkScalar focalX) { |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 378 | return SkNEW_ARGS(FocalOutside2PtConicalEffect, (ctx, procDataManager, shader, matrix, tm, |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 379 | focalX)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 380 | } |
| 381 | |
| 382 | virtual ~FocalOutside2PtConicalEffect() { } |
| 383 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 384 | const char* name() const override { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 385 | return "Two-Point Conical Gradient Focal Outside"; |
| 386 | } |
| 387 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 388 | GrGLFragmentProcessor* createGLInstance() const override; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 389 | |
| 390 | bool isFlipped() const { return fIsFlipped; } |
| 391 | SkScalar focal() const { return fFocalX; } |
| 392 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 393 | private: |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame^] | 394 | void onGetGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override; |
| 395 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 396 | bool onIsEqual(const GrFragmentProcessor& sBase) const override { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 397 | const FocalOutside2PtConicalEffect& s = sBase.cast<FocalOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 398 | return (INHERITED::onIsEqual(sBase) && |
| 399 | this->fFocalX == s.fFocalX && |
| 400 | this->fIsFlipped == s.fIsFlipped); |
| 401 | } |
| 402 | |
| 403 | FocalOutside2PtConicalEffect(GrContext* ctx, |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 404 | GrProcessorDataManager* procDataManager, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 405 | const SkTwoPointConicalGradient& shader, |
| 406 | const SkMatrix& matrix, |
| 407 | SkShader::TileMode tm, |
| 408 | SkScalar focalX) |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 409 | : INHERITED(ctx, procDataManager, shader, matrix, tm) |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 410 | , fFocalX(focalX) |
| 411 | , fIsFlipped(shader.isFlippedGrad()) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 412 | this->initClassID<FocalOutside2PtConicalEffect>(); |
| 413 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 414 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 415 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 416 | |
| 417 | SkScalar fFocalX; |
| 418 | bool fIsFlipped; |
| 419 | |
| 420 | typedef GrGradientEffect INHERITED; |
| 421 | }; |
| 422 | |
| 423 | class GLFocalOutside2PtConicalEffect : public GrGLGradientEffect { |
| 424 | public: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 425 | GLFocalOutside2PtConicalEffect(const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 426 | virtual ~GLFocalOutside2PtConicalEffect() { } |
| 427 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 428 | virtual void emitCode(EmitArgs&) override; |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 429 | void setData(const GrGLProgramDataManager&, const GrProcessor&) override; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 430 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 431 | static void GenKey(const GrProcessor&, const GrGLSLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 432 | |
| 433 | protected: |
| 434 | UniformHandle fParamUni; |
| 435 | |
| 436 | const char* fVSVaryingName; |
| 437 | const char* fFSVaryingName; |
| 438 | |
| 439 | bool fIsFlipped; |
| 440 | |
| 441 | // @{ |
| 442 | /// Values last uploaded as uniforms |
| 443 | |
| 444 | SkScalar fCachedFocal; |
| 445 | |
| 446 | // @} |
| 447 | |
| 448 | private: |
| 449 | typedef GrGLGradientEffect INHERITED; |
| 450 | |
| 451 | }; |
| 452 | |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame^] | 453 | void FocalOutside2PtConicalEffect::onGetGLProcessorKey(const GrGLSLCaps& caps, |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 454 | GrProcessorKeyBuilder* b) const { |
| 455 | GLFocalOutside2PtConicalEffect::GenKey(*this, caps, b); |
| 456 | } |
| 457 | |
| 458 | GrGLFragmentProcessor* FocalOutside2PtConicalEffect::createGLInstance() const { |
| 459 | return SkNEW_ARGS(GLFocalOutside2PtConicalEffect, (*this)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 460 | } |
| 461 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 462 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(FocalOutside2PtConicalEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 463 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 464 | /* |
| 465 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 466 | */ |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 467 | GrFragmentProcessor* FocalOutside2PtConicalEffect::TestCreate(GrProcessorTestData* d) { |
| 468 | SkPoint center1 = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()}; |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 469 | SkScalar radius1 = 0.f; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 470 | SkPoint center2; |
| 471 | SkScalar radius2; |
| 472 | do { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 473 | center2.set(d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 474 | // 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] | 475 | } while (center1 == center2); |
| 476 | SkPoint diff = center2 - center1; |
| 477 | SkScalar diffLen = diff.length(); |
| 478 | // Below makes sure that the focal point is not contained within circle two |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 479 | radius2 = d->fRandom->nextRangeF(0.f, diffLen); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 480 | |
| 481 | SkColor colors[kMaxRandomGradientColors]; |
| 482 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 483 | SkScalar* stops = stopsArray; |
| 484 | SkShader::TileMode tm; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 485 | int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tm); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 486 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 487 | center2, radius2, |
| 488 | colors, stops, colorCount, |
| 489 | tm)); |
| 490 | SkPaint paint; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 491 | GrFragmentProcessor* effect; |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 492 | GrColor paintColor; |
joshualitt | 8ca93e7 | 2015-07-08 06:51:43 -0700 | [diff] [blame] | 493 | GrPaint grPaint; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 494 | SkAssertResult(shader->asFragmentProcessor(d->fContext, paint, |
| 495 | GrTest::TestMatrix(d->fRandom), NULL, |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 496 | &paintColor, d->fProcDataManager, |
joshualitt | 8ca93e7 | 2015-07-08 06:51:43 -0700 | [diff] [blame] | 497 | &effect)); |
dandov | 9de5b51 | 2014-06-10 14:38:28 -0700 | [diff] [blame] | 498 | return effect; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 499 | } |
| 500 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 501 | GLFocalOutside2PtConicalEffect::GLFocalOutside2PtConicalEffect(const GrProcessor& processor) |
| 502 | : fVSVaryingName(NULL) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 503 | , fFSVaryingName(NULL) |
| 504 | , fCachedFocal(SK_ScalarMax) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 505 | const FocalOutside2PtConicalEffect& data = processor.cast<FocalOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 506 | fIsFlipped = data.isFlipped(); |
| 507 | } |
| 508 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 509 | void GLFocalOutside2PtConicalEffect::emitCode(EmitArgs& args) { |
| 510 | const FocalOutside2PtConicalEffect& ge = args.fFp.cast<FocalOutside2PtConicalEffect>(); |
| 511 | this->emitUniforms(args.fBuilder, ge); |
| 512 | fParamUni = args.fBuilder->addUniformArray(GrGLProgramBuilder::kFragment_Visibility, |
bsalomon | 422f56f | 2014-12-09 10:18:12 -0800 | [diff] [blame] | 513 | kFloat_GrSLType, kDefault_GrSLPrecision, |
| 514 | "Conical2FSParams", 2); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 515 | SkString tName("t"); |
| 516 | SkString p0; // focalX |
| 517 | SkString p1; // 1 - focalX * focalX |
| 518 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 519 | args.fBuilder->getUniformVariable(fParamUni).appendArrayAccess(0, &p0); |
| 520 | args.fBuilder->getUniformVariable(fParamUni).appendArrayAccess(1, &p1); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 521 | |
| 522 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 523 | GrGLFragmentBuilder* fsBuilder = args.fBuilder->getFragmentShaderBuilder(); |
| 524 | SkString coords2DString = fsBuilder->ensureFSCoords2D(args.fCoords, 0); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 525 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 526 | |
| 527 | // t = p.x * focal.x +/- sqrt(p.x^2 + (1 - focal.x^2) * p.y^2) |
| 528 | |
| 529 | // output will default to transparent black (we simply won't write anything |
| 530 | // else to it if invalid, instead of discarding or returning prematurely) |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 531 | 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] | 532 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 533 | fsBuilder->codeAppendf("\tfloat xs = %s.x * %s.x;\n", coords2D, coords2D); |
| 534 | fsBuilder->codeAppendf("\tfloat ys = %s.y * %s.y;\n", coords2D, coords2D); |
| 535 | 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] | 536 | |
| 537 | // Must check to see if we flipped the circle order (to make sure start radius < end radius) |
| 538 | // If so we must also flip sign on sqrt |
| 539 | if (!fIsFlipped) { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 540 | 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] | 541 | coords2D, p0.c_str()); |
| 542 | } else { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 543 | 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] | 544 | coords2D, p0.c_str()); |
| 545 | } |
| 546 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 547 | fsBuilder->codeAppendf("\tif (%s >= 0.0 && d >= 0.0) {\n", tName.c_str()); |
| 548 | fsBuilder->codeAppend("\t\t"); |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 549 | this->emitColor(args.fBuilder, ge, tName.c_str(), args.fOutputColor, args.fInputColor, |
| 550 | args.fSamplers); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 551 | fsBuilder->codeAppend("\t}\n"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 552 | } |
| 553 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 554 | void GLFocalOutside2PtConicalEffect::setData(const GrGLProgramDataManager& pdman, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 555 | const GrProcessor& processor) { |
| 556 | INHERITED::setData(pdman, processor); |
| 557 | const FocalOutside2PtConicalEffect& data = processor.cast<FocalOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 558 | SkASSERT(data.isFlipped() == fIsFlipped); |
| 559 | SkScalar focal = data.focal(); |
| 560 | |
| 561 | if (fCachedFocal != focal) { |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 562 | SkScalar oneMinus2F = 1.f - SkScalarMul(focal, focal); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 563 | |
| 564 | float values[2] = { |
| 565 | SkScalarToFloat(focal), |
| 566 | SkScalarToFloat(oneMinus2F), |
| 567 | }; |
| 568 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 569 | pdman.set1fv(fParamUni, 2, values); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 570 | fCachedFocal = focal; |
| 571 | } |
| 572 | } |
| 573 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 574 | void GLFocalOutside2PtConicalEffect::GenKey(const GrProcessor& processor, |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 575 | const GrGLSLCaps&, GrProcessorKeyBuilder* b) { |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 576 | uint32_t* key = b->add32n(2); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 577 | key[0] = GenBaseGradientKey(processor); |
| 578 | key[1] = processor.cast<FocalOutside2PtConicalEffect>().isFlipped(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 579 | } |
| 580 | |
| 581 | ////////////////////////////////////////////////////////////////////////////// |
| 582 | |
| 583 | class GLFocalInside2PtConicalEffect; |
| 584 | |
| 585 | class FocalInside2PtConicalEffect : public GrGradientEffect { |
| 586 | public: |
| 587 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 588 | static GrFragmentProcessor* Create(GrContext* ctx, |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 589 | GrProcessorDataManager* procDataManager, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 590 | const SkTwoPointConicalGradient& shader, |
| 591 | const SkMatrix& matrix, |
| 592 | SkShader::TileMode tm, |
| 593 | SkScalar focalX) { |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 594 | return SkNEW_ARGS(FocalInside2PtConicalEffect, (ctx, procDataManager, shader, matrix, tm, |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 595 | focalX)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 596 | } |
| 597 | |
| 598 | virtual ~FocalInside2PtConicalEffect() {} |
| 599 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 600 | const char* name() const override { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 601 | return "Two-Point Conical Gradient Focal Inside"; |
| 602 | } |
| 603 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 604 | GrGLFragmentProcessor* createGLInstance() const override; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 605 | |
| 606 | SkScalar focal() const { return fFocalX; } |
| 607 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 608 | typedef GLFocalInside2PtConicalEffect GLProcessor; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 609 | |
| 610 | private: |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame^] | 611 | void onGetGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override; |
| 612 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 613 | bool onIsEqual(const GrFragmentProcessor& sBase) const override { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 614 | const FocalInside2PtConicalEffect& s = sBase.cast<FocalInside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 615 | return (INHERITED::onIsEqual(sBase) && |
| 616 | this->fFocalX == s.fFocalX); |
| 617 | } |
| 618 | |
| 619 | FocalInside2PtConicalEffect(GrContext* ctx, |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 620 | GrProcessorDataManager* procDataManager, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 621 | const SkTwoPointConicalGradient& shader, |
| 622 | const SkMatrix& matrix, |
| 623 | SkShader::TileMode tm, |
| 624 | SkScalar focalX) |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 625 | : INHERITED(ctx, procDataManager, shader, matrix, tm), fFocalX(focalX) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 626 | this->initClassID<FocalInside2PtConicalEffect>(); |
| 627 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 628 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 629 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 630 | |
| 631 | SkScalar fFocalX; |
| 632 | |
| 633 | typedef GrGradientEffect INHERITED; |
| 634 | }; |
| 635 | |
| 636 | class GLFocalInside2PtConicalEffect : public GrGLGradientEffect { |
| 637 | public: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 638 | GLFocalInside2PtConicalEffect(const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 639 | virtual ~GLFocalInside2PtConicalEffect() {} |
| 640 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 641 | virtual void emitCode(EmitArgs&) override; |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 642 | void setData(const GrGLProgramDataManager&, const GrProcessor&) override; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 643 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 644 | static void GenKey(const GrProcessor&, const GrGLSLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 645 | |
| 646 | protected: |
| 647 | UniformHandle fFocalUni; |
| 648 | |
| 649 | const char* fVSVaryingName; |
| 650 | const char* fFSVaryingName; |
| 651 | |
| 652 | // @{ |
| 653 | /// Values last uploaded as uniforms |
| 654 | |
| 655 | SkScalar fCachedFocal; |
| 656 | |
| 657 | // @} |
| 658 | |
| 659 | private: |
| 660 | typedef GrGLGradientEffect INHERITED; |
| 661 | |
| 662 | }; |
| 663 | |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame^] | 664 | void FocalInside2PtConicalEffect::onGetGLProcessorKey(const GrGLSLCaps& caps, |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 665 | GrProcessorKeyBuilder* b) const { |
| 666 | GLFocalInside2PtConicalEffect::GenKey(*this, caps, b); |
| 667 | } |
| 668 | |
| 669 | GrGLFragmentProcessor* FocalInside2PtConicalEffect::createGLInstance() const { |
| 670 | return SkNEW_ARGS(GLFocalInside2PtConicalEffect, (*this)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 671 | } |
| 672 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 673 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(FocalInside2PtConicalEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 674 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 675 | /* |
| 676 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 677 | */ |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 678 | GrFragmentProcessor* FocalInside2PtConicalEffect::TestCreate(GrProcessorTestData* d) { |
| 679 | SkPoint center1 = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()}; |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 680 | SkScalar radius1 = 0.f; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 681 | SkPoint center2; |
| 682 | SkScalar radius2; |
| 683 | do { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 684 | center2.set(d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 685 | // Below makes sure radius2 is larger enouch such that the focal point |
| 686 | // is inside the end circle |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 687 | SkScalar increase = d->fRandom->nextUScalar1(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 688 | SkPoint diff = center2 - center1; |
| 689 | SkScalar diffLen = diff.length(); |
| 690 | radius2 = diffLen + increase; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 691 | // If the circles are identical the factory will give us an empty shader. |
| 692 | } while (radius1 == radius2 && center1 == center2); |
| 693 | |
| 694 | SkColor colors[kMaxRandomGradientColors]; |
| 695 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 696 | SkScalar* stops = stopsArray; |
| 697 | SkShader::TileMode tm; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 698 | int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tm); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 699 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 700 | center2, radius2, |
| 701 | colors, stops, colorCount, |
| 702 | tm)); |
| 703 | SkPaint paint; |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 704 | GrColor paintColor; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 705 | GrFragmentProcessor* fp; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 706 | SkAssertResult(shader->asFragmentProcessor(d->fContext, paint, |
| 707 | GrTest::TestMatrix(d->fRandom), NULL, |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 708 | &paintColor, d->fProcDataManager, &fp)); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 709 | return fp; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 710 | } |
| 711 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 712 | GLFocalInside2PtConicalEffect::GLFocalInside2PtConicalEffect(const GrProcessor&) |
| 713 | : fVSVaryingName(NULL) |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 714 | , fFSVaryingName(NULL) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 715 | , fCachedFocal(SK_ScalarMax) {} |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 716 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 717 | void GLFocalInside2PtConicalEffect::emitCode(EmitArgs& args) { |
| 718 | const FocalInside2PtConicalEffect& ge = args.fFp.cast<FocalInside2PtConicalEffect>(); |
| 719 | this->emitUniforms(args.fBuilder, ge); |
| 720 | fFocalUni = args.fBuilder->addUniform(GrGLProgramBuilder::kFragment_Visibility, |
bsalomon | 422f56f | 2014-12-09 10:18:12 -0800 | [diff] [blame] | 721 | kFloat_GrSLType, kDefault_GrSLPrecision, |
| 722 | "Conical2FSParams"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 723 | SkString tName("t"); |
| 724 | |
| 725 | // this is the distance along x-axis from the end center to focal point in |
| 726 | // transformed coordinates |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 727 | GrGLShaderVar focal = args.fBuilder->getUniformVariable(fFocalUni); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 728 | |
| 729 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 730 | GrGLFragmentBuilder* fsBuilder = args.fBuilder->getFragmentShaderBuilder(); |
| 731 | SkString coords2DString = fsBuilder->ensureFSCoords2D(args.fCoords, 0); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 732 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 733 | |
| 734 | // t = p.x * focalX + length(p) |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 735 | 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] | 736 | coords2D, focal.c_str(), coords2D); |
| 737 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 738 | this->emitColor(args.fBuilder, ge, tName.c_str(), args.fOutputColor, args.fInputColor, |
| 739 | args.fSamplers); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 740 | } |
| 741 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 742 | void GLFocalInside2PtConicalEffect::setData(const GrGLProgramDataManager& pdman, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 743 | const GrProcessor& processor) { |
| 744 | INHERITED::setData(pdman, processor); |
| 745 | const FocalInside2PtConicalEffect& data = processor.cast<FocalInside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 746 | SkScalar focal = data.focal(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 747 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 748 | if (fCachedFocal != focal) { |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 749 | pdman.set1f(fFocalUni, SkScalarToFloat(focal)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 750 | fCachedFocal = focal; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 751 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 752 | } |
| 753 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 754 | void GLFocalInside2PtConicalEffect::GenKey(const GrProcessor& processor, |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 755 | const GrGLSLCaps&, GrProcessorKeyBuilder* b) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 756 | b->add32(GenBaseGradientKey(processor)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 757 | } |
| 758 | |
| 759 | ////////////////////////////////////////////////////////////////////////////// |
| 760 | // Circle Conical Gradients |
| 761 | ////////////////////////////////////////////////////////////////////////////// |
| 762 | |
| 763 | struct CircleConicalInfo { |
| 764 | SkPoint fCenterEnd; |
| 765 | SkScalar fA; |
| 766 | SkScalar fB; |
| 767 | SkScalar fC; |
| 768 | }; |
| 769 | |
| 770 | // Returns focal distance along x-axis in transformed coords |
| 771 | static ConicalType set_matrix_circle_conical(const SkTwoPointConicalGradient& shader, |
| 772 | SkMatrix* invLMatrix, CircleConicalInfo* info) { |
| 773 | // Inverse of the current local matrix is passed in then, |
| 774 | // translate and scale such that start circle is on the origin and has radius 1 |
| 775 | const SkPoint& centerStart = shader.getStartCenter(); |
| 776 | const SkPoint& centerEnd = shader.getEndCenter(); |
| 777 | SkScalar radiusStart = shader.getStartRadius(); |
| 778 | SkScalar radiusEnd = shader.getEndRadius(); |
| 779 | |
| 780 | SkMatrix matrix; |
| 781 | |
| 782 | matrix.setTranslate(-centerStart.fX, -centerStart.fY); |
| 783 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 784 | SkScalar invStartRad = 1.f / radiusStart; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 785 | matrix.postScale(invStartRad, invStartRad); |
| 786 | |
| 787 | radiusEnd /= radiusStart; |
| 788 | |
| 789 | SkPoint centerEndTrans; |
| 790 | matrix.mapPoints(¢erEndTrans, ¢erEnd, 1); |
| 791 | |
| 792 | SkScalar A = centerEndTrans.fX * centerEndTrans.fX + centerEndTrans.fY * centerEndTrans.fY |
| 793 | - radiusEnd * radiusEnd + 2 * radiusEnd - 1; |
| 794 | |
| 795 | // Check to see if start circle is inside end circle with edges touching. |
| 796 | // 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] | 797 | // to the edge shader. kEdgeErrorTol = 5 * kErrorTol was picked after manual testing |
| 798 | // so that C = 1 / A is stable, and the linear approximation used in the Edge shader is |
| 799 | // still accurate. |
| 800 | if (SkScalarAbs(A) < kEdgeErrorTol) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 801 | return kEdge_ConicalType; |
| 802 | } |
| 803 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 804 | SkScalar C = 1.f / A; |
| 805 | SkScalar B = (radiusEnd - 1.f) * C; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 806 | |
| 807 | matrix.postScale(C, C); |
| 808 | |
| 809 | invLMatrix->postConcat(matrix); |
| 810 | |
| 811 | info->fCenterEnd = centerEndTrans; |
| 812 | info->fA = A; |
| 813 | info->fB = B; |
| 814 | info->fC = C; |
| 815 | |
| 816 | // 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] | 817 | if (A < 0.f) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 818 | return kInside_ConicalType; |
| 819 | } |
| 820 | return kOutside_ConicalType; |
| 821 | } |
| 822 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 823 | class CircleInside2PtConicalEffect : public GrGradientEffect { |
| 824 | public: |
| 825 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 826 | static GrFragmentProcessor* Create(GrContext* ctx, |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 827 | GrProcessorDataManager* procDataManager, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 828 | const SkTwoPointConicalGradient& shader, |
| 829 | const SkMatrix& matrix, |
| 830 | SkShader::TileMode tm, |
| 831 | const CircleConicalInfo& info) { |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 832 | return SkNEW_ARGS(CircleInside2PtConicalEffect, (ctx, procDataManager, shader, matrix, tm, |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 833 | info)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 834 | } |
| 835 | |
| 836 | virtual ~CircleInside2PtConicalEffect() {} |
| 837 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 838 | const char* name() const override { return "Two-Point Conical Gradient Inside"; } |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 839 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 840 | GrGLFragmentProcessor* createGLInstance() const override; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 841 | |
| 842 | SkScalar centerX() const { return fInfo.fCenterEnd.fX; } |
| 843 | SkScalar centerY() const { return fInfo.fCenterEnd.fY; } |
| 844 | SkScalar A() const { return fInfo.fA; } |
| 845 | SkScalar B() const { return fInfo.fB; } |
| 846 | SkScalar C() const { return fInfo.fC; } |
| 847 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 848 | private: |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame^] | 849 | virtual void onGetGLProcessorKey(const GrGLSLCaps& caps, |
| 850 | GrProcessorKeyBuilder* b) const override; |
| 851 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 852 | bool onIsEqual(const GrFragmentProcessor& sBase) const override { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 853 | const CircleInside2PtConicalEffect& s = sBase.cast<CircleInside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 854 | return (INHERITED::onIsEqual(sBase) && |
| 855 | this->fInfo.fCenterEnd == s.fInfo.fCenterEnd && |
| 856 | this->fInfo.fA == s.fInfo.fA && |
| 857 | this->fInfo.fB == s.fInfo.fB && |
| 858 | this->fInfo.fC == s.fInfo.fC); |
| 859 | } |
| 860 | |
| 861 | CircleInside2PtConicalEffect(GrContext* ctx, |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 862 | GrProcessorDataManager* procDataManager, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 863 | const SkTwoPointConicalGradient& shader, |
| 864 | const SkMatrix& matrix, |
| 865 | SkShader::TileMode tm, |
| 866 | const CircleConicalInfo& info) |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 867 | : INHERITED(ctx, procDataManager, shader, matrix, tm), fInfo(info) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 868 | this->initClassID<CircleInside2PtConicalEffect>(); |
| 869 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 870 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 871 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 872 | |
| 873 | const CircleConicalInfo fInfo; |
| 874 | |
| 875 | typedef GrGradientEffect INHERITED; |
| 876 | }; |
| 877 | |
| 878 | class GLCircleInside2PtConicalEffect : public GrGLGradientEffect { |
| 879 | public: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 880 | GLCircleInside2PtConicalEffect(const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 881 | virtual ~GLCircleInside2PtConicalEffect() {} |
| 882 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 883 | virtual void emitCode(EmitArgs&) override; |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 884 | void setData(const GrGLProgramDataManager&, const GrProcessor&) override; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 885 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 886 | static void GenKey(const GrProcessor&, const GrGLSLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 887 | |
| 888 | protected: |
| 889 | UniformHandle fCenterUni; |
| 890 | UniformHandle fParamUni; |
| 891 | |
| 892 | const char* fVSVaryingName; |
| 893 | const char* fFSVaryingName; |
| 894 | |
| 895 | // @{ |
| 896 | /// Values last uploaded as uniforms |
| 897 | |
| 898 | SkScalar fCachedCenterX; |
| 899 | SkScalar fCachedCenterY; |
| 900 | SkScalar fCachedA; |
| 901 | SkScalar fCachedB; |
| 902 | SkScalar fCachedC; |
| 903 | |
| 904 | // @} |
| 905 | |
| 906 | private: |
| 907 | typedef GrGLGradientEffect INHERITED; |
| 908 | |
| 909 | }; |
| 910 | |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame^] | 911 | void CircleInside2PtConicalEffect::onGetGLProcessorKey(const GrGLSLCaps& caps, |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 912 | GrProcessorKeyBuilder* b) const { |
| 913 | GLCircleInside2PtConicalEffect::GenKey(*this, caps, b); |
| 914 | } |
| 915 | |
| 916 | GrGLFragmentProcessor* CircleInside2PtConicalEffect::createGLInstance() const { |
| 917 | return SkNEW_ARGS(GLCircleInside2PtConicalEffect, (*this)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 918 | } |
| 919 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 920 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(CircleInside2PtConicalEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 921 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 922 | /* |
| 923 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 924 | */ |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 925 | GrFragmentProcessor* |
| 926 | CircleInside2PtConicalEffect::TestCreate(GrProcessorTestData* d) { |
| 927 | SkPoint center1 = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()}; |
| 928 | 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] | 929 | SkPoint center2; |
| 930 | SkScalar radius2; |
| 931 | do { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 932 | center2.set(d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 933 | // Below makes sure that circle one is contained within circle two |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 934 | SkScalar increase = d->fRandom->nextUScalar1(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 935 | SkPoint diff = center2 - center1; |
| 936 | SkScalar diffLen = diff.length(); |
| 937 | radius2 = radius1 + diffLen + increase; |
| 938 | // If the circles are identical the factory will give us an empty shader. |
| 939 | } while (radius1 == radius2 && center1 == center2); |
| 940 | |
| 941 | SkColor colors[kMaxRandomGradientColors]; |
| 942 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 943 | SkScalar* stops = stopsArray; |
| 944 | SkShader::TileMode tm; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 945 | int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tm); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 946 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 947 | center2, radius2, |
| 948 | colors, stops, colorCount, |
| 949 | tm)); |
| 950 | SkPaint paint; |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 951 | GrColor paintColor; |
joshualitt | 8ca93e7 | 2015-07-08 06:51:43 -0700 | [diff] [blame] | 952 | GrFragmentProcessor* fp; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 953 | SkAssertResult(shader->asFragmentProcessor(d->fContext, paint, |
| 954 | GrTest::TestMatrix(d->fRandom), NULL, |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 955 | &paintColor, d->fProcDataManager, &fp)); |
joshualitt | 8ca93e7 | 2015-07-08 06:51:43 -0700 | [diff] [blame] | 956 | return fp; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 957 | } |
| 958 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 959 | GLCircleInside2PtConicalEffect::GLCircleInside2PtConicalEffect(const GrProcessor& processor) |
| 960 | : fVSVaryingName(NULL) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 961 | , fFSVaryingName(NULL) |
| 962 | , fCachedCenterX(SK_ScalarMax) |
| 963 | , fCachedCenterY(SK_ScalarMax) |
| 964 | , fCachedA(SK_ScalarMax) |
| 965 | , fCachedB(SK_ScalarMax) |
| 966 | , fCachedC(SK_ScalarMax) {} |
| 967 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 968 | void GLCircleInside2PtConicalEffect::emitCode(EmitArgs& args) { |
| 969 | const CircleInside2PtConicalEffect& ge = args.fFp.cast<CircleInside2PtConicalEffect>(); |
| 970 | this->emitUniforms(args.fBuilder, ge); |
| 971 | fCenterUni = args.fBuilder->addUniform(GrGLProgramBuilder::kFragment_Visibility, |
bsalomon | 422f56f | 2014-12-09 10:18:12 -0800 | [diff] [blame] | 972 | kVec2f_GrSLType, kDefault_GrSLPrecision, |
| 973 | "Conical2FSCenter"); |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 974 | fParamUni = args.fBuilder->addUniform(GrGLProgramBuilder::kFragment_Visibility, |
bsalomon | 422f56f | 2014-12-09 10:18:12 -0800 | [diff] [blame] | 975 | kVec3f_GrSLType, kDefault_GrSLPrecision, |
| 976 | "Conical2FSParams"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 977 | SkString tName("t"); |
| 978 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 979 | GrGLShaderVar center = args.fBuilder->getUniformVariable(fCenterUni); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 980 | // params.x = A |
| 981 | // params.y = B |
| 982 | // params.z = C |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 983 | GrGLShaderVar params = args.fBuilder->getUniformVariable(fParamUni); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 984 | |
| 985 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 986 | GrGLFragmentBuilder* fsBuilder = args.fBuilder->getFragmentShaderBuilder(); |
| 987 | SkString coords2DString = fsBuilder->ensureFSCoords2D(args.fCoords, 0); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 988 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 989 | |
| 990 | // p = coords2D |
| 991 | // e = center end |
| 992 | // r = radius end |
| 993 | // A = dot(e, e) - r^2 + 2 * r - 1 |
| 994 | // B = (r -1) / A |
| 995 | // C = 1 / A |
| 996 | // d = dot(e, p) + B |
| 997 | // t = d +/- sqrt(d^2 - A * dot(p, p) + C) |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 998 | fsBuilder->codeAppendf("\tfloat pDotp = dot(%s, %s);\n", coords2D, coords2D); |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 999 | fsBuilder->codeAppendf("\tfloat d = dot(%s, %s) + %s.y;\n", coords2D, center.c_str(), |
| 1000 | params.c_str()); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1001 | 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] | 1002 | tName.c_str(), params.c_str(), params.c_str()); |
| 1003 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 1004 | this->emitColor(args.fBuilder, ge, tName.c_str(), args.fOutputColor, args.fInputColor, |
| 1005 | args.fSamplers); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1006 | } |
| 1007 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 1008 | void GLCircleInside2PtConicalEffect::setData(const GrGLProgramDataManager& pdman, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1009 | const GrProcessor& processor) { |
| 1010 | INHERITED::setData(pdman, processor); |
| 1011 | const CircleInside2PtConicalEffect& data = processor.cast<CircleInside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1012 | SkScalar centerX = data.centerX(); |
| 1013 | SkScalar centerY = data.centerY(); |
| 1014 | SkScalar A = data.A(); |
| 1015 | SkScalar B = data.B(); |
| 1016 | SkScalar C = data.C(); |
| 1017 | |
| 1018 | if (fCachedCenterX != centerX || fCachedCenterY != centerY || |
| 1019 | fCachedA != A || fCachedB != B || fCachedC != C) { |
| 1020 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 1021 | pdman.set2f(fCenterUni, SkScalarToFloat(centerX), SkScalarToFloat(centerY)); |
| 1022 | pdman.set3f(fParamUni, SkScalarToFloat(A), SkScalarToFloat(B), SkScalarToFloat(C)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1023 | |
| 1024 | fCachedCenterX = centerX; |
| 1025 | fCachedCenterY = centerY; |
| 1026 | fCachedA = A; |
| 1027 | fCachedB = B; |
| 1028 | fCachedC = C; |
| 1029 | } |
| 1030 | } |
| 1031 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1032 | void GLCircleInside2PtConicalEffect::GenKey(const GrProcessor& processor, |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 1033 | const GrGLSLCaps&, GrProcessorKeyBuilder* b) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1034 | b->add32(GenBaseGradientKey(processor)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1035 | } |
| 1036 | |
| 1037 | ////////////////////////////////////////////////////////////////////////////// |
| 1038 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1039 | class CircleOutside2PtConicalEffect : public GrGradientEffect { |
| 1040 | public: |
| 1041 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1042 | static GrFragmentProcessor* Create(GrContext* ctx, |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 1043 | GrProcessorDataManager* procDataManager, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1044 | const SkTwoPointConicalGradient& shader, |
| 1045 | const SkMatrix& matrix, |
| 1046 | SkShader::TileMode tm, |
| 1047 | const CircleConicalInfo& info) { |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 1048 | return SkNEW_ARGS(CircleOutside2PtConicalEffect, (ctx, procDataManager, shader, matrix, |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 1049 | tm, info)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1050 | } |
| 1051 | |
| 1052 | virtual ~CircleOutside2PtConicalEffect() {} |
| 1053 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 1054 | const char* name() const override { return "Two-Point Conical Gradient Outside"; } |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 1055 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 1056 | GrGLFragmentProcessor* createGLInstance() const override; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1057 | |
| 1058 | SkScalar centerX() const { return fInfo.fCenterEnd.fX; } |
| 1059 | SkScalar centerY() const { return fInfo.fCenterEnd.fY; } |
| 1060 | SkScalar A() const { return fInfo.fA; } |
| 1061 | SkScalar B() const { return fInfo.fB; } |
| 1062 | SkScalar C() const { return fInfo.fC; } |
| 1063 | SkScalar tLimit() const { return fTLimit; } |
| 1064 | bool isFlipped() const { return fIsFlipped; } |
| 1065 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1066 | private: |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame^] | 1067 | void onGetGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override; |
| 1068 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 1069 | bool onIsEqual(const GrFragmentProcessor& sBase) const override { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 1070 | const CircleOutside2PtConicalEffect& s = sBase.cast<CircleOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1071 | return (INHERITED::onIsEqual(sBase) && |
| 1072 | this->fInfo.fCenterEnd == s.fInfo.fCenterEnd && |
| 1073 | this->fInfo.fA == s.fInfo.fA && |
| 1074 | this->fInfo.fB == s.fInfo.fB && |
| 1075 | this->fInfo.fC == s.fInfo.fC && |
| 1076 | this->fTLimit == s.fTLimit && |
| 1077 | this->fIsFlipped == s.fIsFlipped); |
| 1078 | } |
| 1079 | |
| 1080 | CircleOutside2PtConicalEffect(GrContext* ctx, |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 1081 | GrProcessorDataManager* procDataManager, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1082 | const SkTwoPointConicalGradient& shader, |
| 1083 | const SkMatrix& matrix, |
| 1084 | SkShader::TileMode tm, |
| 1085 | const CircleConicalInfo& info) |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 1086 | : INHERITED(ctx, procDataManager, shader, matrix, tm), fInfo(info) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 1087 | this->initClassID<CircleOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1088 | if (shader.getStartRadius() != shader.getEndRadius()) { |
reed | 80ea19c | 2015-05-12 10:37:34 -0700 | [diff] [blame] | 1089 | fTLimit = shader.getStartRadius() / (shader.getStartRadius() - shader.getEndRadius()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1090 | } else { |
| 1091 | fTLimit = SK_ScalarMin; |
| 1092 | } |
| 1093 | |
| 1094 | fIsFlipped = shader.isFlippedGrad(); |
| 1095 | } |
| 1096 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1097 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1098 | |
| 1099 | const CircleConicalInfo fInfo; |
| 1100 | SkScalar fTLimit; |
| 1101 | bool fIsFlipped; |
| 1102 | |
| 1103 | typedef GrGradientEffect INHERITED; |
| 1104 | }; |
| 1105 | |
| 1106 | class GLCircleOutside2PtConicalEffect : public GrGLGradientEffect { |
| 1107 | public: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 1108 | GLCircleOutside2PtConicalEffect(const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1109 | virtual ~GLCircleOutside2PtConicalEffect() {} |
| 1110 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 1111 | virtual void emitCode(EmitArgs&) override; |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 1112 | void setData(const GrGLProgramDataManager&, const GrProcessor&) override; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1113 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 1114 | static void GenKey(const GrProcessor&, const GrGLSLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1115 | |
| 1116 | protected: |
| 1117 | UniformHandle fCenterUni; |
| 1118 | UniformHandle fParamUni; |
| 1119 | |
| 1120 | const char* fVSVaryingName; |
| 1121 | const char* fFSVaryingName; |
| 1122 | |
| 1123 | bool fIsFlipped; |
| 1124 | |
| 1125 | // @{ |
| 1126 | /// Values last uploaded as uniforms |
| 1127 | |
| 1128 | SkScalar fCachedCenterX; |
| 1129 | SkScalar fCachedCenterY; |
| 1130 | SkScalar fCachedA; |
| 1131 | SkScalar fCachedB; |
| 1132 | SkScalar fCachedC; |
| 1133 | SkScalar fCachedTLimit; |
| 1134 | |
| 1135 | // @} |
| 1136 | |
| 1137 | private: |
| 1138 | typedef GrGLGradientEffect INHERITED; |
| 1139 | |
| 1140 | }; |
| 1141 | |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame^] | 1142 | void CircleOutside2PtConicalEffect::onGetGLProcessorKey(const GrGLSLCaps& caps, |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 1143 | GrProcessorKeyBuilder* b) const { |
| 1144 | GLCircleOutside2PtConicalEffect::GenKey(*this, caps, b); |
| 1145 | } |
| 1146 | |
| 1147 | GrGLFragmentProcessor* CircleOutside2PtConicalEffect::createGLInstance() const { |
| 1148 | return SkNEW_ARGS(GLCircleOutside2PtConicalEffect, (*this)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1149 | } |
| 1150 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1151 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(CircleOutside2PtConicalEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1152 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 1153 | /* |
| 1154 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 1155 | */ |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 1156 | GrFragmentProcessor* CircleOutside2PtConicalEffect::TestCreate(GrProcessorTestData* d) { |
| 1157 | SkPoint center1 = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()}; |
| 1158 | 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] | 1159 | SkPoint center2; |
| 1160 | SkScalar radius2; |
| 1161 | SkScalar diffLen; |
| 1162 | do { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 1163 | center2.set(d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1164 | // If the circles share a center than we can't be in the outside case |
| 1165 | } while (center1 == center2); |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 1166 | SkPoint diff = center2 - center1; |
| 1167 | diffLen = diff.length(); |
| 1168 | // Below makes sure that circle one is not contained within circle two |
| 1169 | // and have radius2 >= radius to match sorting on cpu side |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 1170 | radius2 = radius1 + d->fRandom->nextRangeF(0.f, diffLen); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1171 | |
| 1172 | SkColor colors[kMaxRandomGradientColors]; |
| 1173 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 1174 | SkScalar* stops = stopsArray; |
| 1175 | SkShader::TileMode tm; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 1176 | int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tm); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1177 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 1178 | center2, radius2, |
| 1179 | colors, stops, colorCount, |
| 1180 | tm)); |
| 1181 | SkPaint paint; |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 1182 | GrColor paintColor; |
joshualitt | 8ca93e7 | 2015-07-08 06:51:43 -0700 | [diff] [blame] | 1183 | GrFragmentProcessor* fp; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 1184 | SkAssertResult(shader->asFragmentProcessor(d->fContext, paint, |
| 1185 | GrTest::TestMatrix(d->fRandom), NULL, |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 1186 | &paintColor, d->fProcDataManager, &fp)); |
joshualitt | 8ca93e7 | 2015-07-08 06:51:43 -0700 | [diff] [blame] | 1187 | return fp; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1188 | } |
| 1189 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 1190 | GLCircleOutside2PtConicalEffect::GLCircleOutside2PtConicalEffect(const GrProcessor& processor) |
| 1191 | : fVSVaryingName(NULL) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1192 | , fFSVaryingName(NULL) |
| 1193 | , fCachedCenterX(SK_ScalarMax) |
| 1194 | , fCachedCenterY(SK_ScalarMax) |
| 1195 | , fCachedA(SK_ScalarMax) |
| 1196 | , fCachedB(SK_ScalarMax) |
| 1197 | , fCachedC(SK_ScalarMax) |
| 1198 | , fCachedTLimit(SK_ScalarMax) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1199 | const CircleOutside2PtConicalEffect& data = processor.cast<CircleOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1200 | fIsFlipped = data.isFlipped(); |
| 1201 | } |
| 1202 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 1203 | void GLCircleOutside2PtConicalEffect::emitCode(EmitArgs& args) { |
| 1204 | const CircleOutside2PtConicalEffect& ge = args.fFp.cast<CircleOutside2PtConicalEffect>(); |
| 1205 | this->emitUniforms(args.fBuilder, ge); |
| 1206 | fCenterUni = args.fBuilder->addUniform(GrGLProgramBuilder::kFragment_Visibility, |
bsalomon | 422f56f | 2014-12-09 10:18:12 -0800 | [diff] [blame] | 1207 | kVec2f_GrSLType, kDefault_GrSLPrecision, |
| 1208 | "Conical2FSCenter"); |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 1209 | fParamUni = args.fBuilder->addUniform(GrGLProgramBuilder::kFragment_Visibility, |
bsalomon | 422f56f | 2014-12-09 10:18:12 -0800 | [diff] [blame] | 1210 | kVec4f_GrSLType, kDefault_GrSLPrecision, |
| 1211 | "Conical2FSParams"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1212 | SkString tName("t"); |
| 1213 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 1214 | GrGLShaderVar center = args.fBuilder->getUniformVariable(fCenterUni); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1215 | // params.x = A |
| 1216 | // params.y = B |
| 1217 | // params.z = C |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 1218 | GrGLShaderVar params = args.fBuilder->getUniformVariable(fParamUni); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1219 | |
| 1220 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 1221 | GrGLFragmentBuilder* fsBuilder = args.fBuilder->getFragmentShaderBuilder(); |
| 1222 | SkString coords2DString = fsBuilder->ensureFSCoords2D(args.fCoords, 0); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 1223 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1224 | |
| 1225 | // output will default to transparent black (we simply won't write anything |
| 1226 | // else to it if invalid, instead of discarding or returning prematurely) |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 1227 | 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] | 1228 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1229 | // p = coords2D |
| 1230 | // e = center end |
| 1231 | // r = radius end |
| 1232 | // A = dot(e, e) - r^2 + 2 * r - 1 |
| 1233 | // B = (r -1) / A |
| 1234 | // C = 1 / A |
| 1235 | // d = dot(e, p) + B |
| 1236 | // t = d +/- sqrt(d^2 - A * dot(p, p) + C) |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1237 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1238 | fsBuilder->codeAppendf("\tfloat pDotp = dot(%s, %s);\n", coords2D, coords2D); |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 1239 | fsBuilder->codeAppendf("\tfloat d = dot(%s, %s) + %s.y;\n", coords2D, center.c_str(), |
| 1240 | params.c_str()); |
| 1241 | fsBuilder->codeAppendf("\tfloat deter = d * d - %s.x * pDotp + %s.z;\n", params.c_str(), |
| 1242 | params.c_str()); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1243 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1244 | // Must check to see if we flipped the circle order (to make sure start radius < end radius) |
| 1245 | // If so we must also flip sign on sqrt |
| 1246 | if (!fIsFlipped) { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1247 | 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] | 1248 | } else { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1249 | 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] | 1250 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1251 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1252 | fsBuilder->codeAppendf("\tif (%s >= %s.w && deter >= 0.0) {\n", tName.c_str(), params.c_str()); |
| 1253 | fsBuilder->codeAppend("\t\t"); |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 1254 | this->emitColor(args.fBuilder, ge, tName.c_str(), args.fOutputColor, args.fInputColor, |
| 1255 | args.fSamplers); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1256 | fsBuilder->codeAppend("\t}\n"); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1257 | } |
| 1258 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 1259 | void GLCircleOutside2PtConicalEffect::setData(const GrGLProgramDataManager& pdman, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1260 | const GrProcessor& processor) { |
| 1261 | INHERITED::setData(pdman, processor); |
| 1262 | const CircleOutside2PtConicalEffect& data = processor.cast<CircleOutside2PtConicalEffect>(); |
commit-bot@chromium.org | 44d83c1 | 2014-04-21 13:10:25 +0000 | [diff] [blame] | 1263 | SkASSERT(data.isFlipped() == fIsFlipped); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1264 | SkScalar centerX = data.centerX(); |
| 1265 | SkScalar centerY = data.centerY(); |
| 1266 | SkScalar A = data.A(); |
| 1267 | SkScalar B = data.B(); |
| 1268 | SkScalar C = data.C(); |
| 1269 | SkScalar tLimit = data.tLimit(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1270 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1271 | if (fCachedCenterX != centerX || fCachedCenterY != centerY || |
| 1272 | fCachedA != A || fCachedB != B || fCachedC != C || fCachedTLimit != tLimit) { |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1273 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 1274 | pdman.set2f(fCenterUni, SkScalarToFloat(centerX), SkScalarToFloat(centerY)); |
| 1275 | pdman.set4f(fParamUni, SkScalarToFloat(A), SkScalarToFloat(B), SkScalarToFloat(C), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1276 | SkScalarToFloat(tLimit)); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1277 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1278 | fCachedCenterX = centerX; |
| 1279 | fCachedCenterY = centerY; |
| 1280 | fCachedA = A; |
| 1281 | fCachedB = B; |
| 1282 | fCachedC = C; |
| 1283 | fCachedTLimit = tLimit; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1284 | } |
| 1285 | } |
| 1286 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1287 | void GLCircleOutside2PtConicalEffect::GenKey(const GrProcessor& processor, |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 1288 | const GrGLSLCaps&, GrProcessorKeyBuilder* b) { |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 1289 | uint32_t* key = b->add32n(2); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1290 | key[0] = GenBaseGradientKey(processor); |
| 1291 | key[1] = processor.cast<CircleOutside2PtConicalEffect>().isFlipped(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1292 | } |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1293 | |
| 1294 | ////////////////////////////////////////////////////////////////////////////// |
| 1295 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1296 | GrFragmentProcessor* Gr2PtConicalGradientEffect::Create(GrContext* ctx, |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 1297 | GrProcessorDataManager* procDataManager, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1298 | const SkTwoPointConicalGradient& shader, |
| 1299 | SkShader::TileMode tm, |
| 1300 | const SkMatrix* localMatrix) { |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1301 | SkMatrix matrix; |
| 1302 | if (!shader.getLocalMatrix().invert(&matrix)) { |
| 1303 | return NULL; |
| 1304 | } |
commit-bot@chromium.org | 96fb748 | 2014-05-09 20:28:11 +0000 | [diff] [blame] | 1305 | if (localMatrix) { |
| 1306 | SkMatrix inv; |
| 1307 | if (!localMatrix->invert(&inv)) { |
| 1308 | return NULL; |
| 1309 | } |
| 1310 | matrix.postConcat(inv); |
| 1311 | } |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1312 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1313 | if (shader.getStartRadius() < kErrorTol) { |
| 1314 | SkScalar focalX; |
| 1315 | ConicalType type = set_matrix_focal_conical(shader, &matrix, &focalX); |
| 1316 | if (type == kInside_ConicalType) { |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 1317 | return FocalInside2PtConicalEffect::Create(ctx, procDataManager, shader, matrix, tm, |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 1318 | focalX); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1319 | } else if(type == kEdge_ConicalType) { |
| 1320 | set_matrix_edge_conical(shader, &matrix); |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 1321 | return Edge2PtConicalEffect::Create(ctx, procDataManager, shader, matrix, tm); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1322 | } else { |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 1323 | return FocalOutside2PtConicalEffect::Create(ctx, procDataManager, shader, matrix, tm, |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 1324 | focalX); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1325 | } |
| 1326 | } |
| 1327 | |
| 1328 | CircleConicalInfo info; |
| 1329 | ConicalType type = set_matrix_circle_conical(shader, &matrix, &info); |
| 1330 | |
| 1331 | if (type == kInside_ConicalType) { |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 1332 | return CircleInside2PtConicalEffect::Create(ctx, procDataManager, shader, matrix, tm, |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 1333 | info); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1334 | } else if (type == kEdge_ConicalType) { |
| 1335 | set_matrix_edge_conical(shader, &matrix); |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 1336 | return Edge2PtConicalEffect::Create(ctx, procDataManager, shader, matrix, tm); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1337 | } else { |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 1338 | return CircleOutside2PtConicalEffect::Create(ctx, procDataManager, shader, matrix, tm, |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 1339 | info); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1340 | } |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1341 | } |
| 1342 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1343 | #endif |