commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 2 | /* |
| 3 | * Copyright 2014 Google Inc. |
| 4 | * |
| 5 | * Use of this source code is governed by a BSD-style license that can be |
| 6 | * found in the LICENSE file. |
| 7 | */ |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 8 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 9 | #include "SkTwoPointConicalGradient_gpu.h" |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 10 | |
| 11 | #include "SkTwoPointConicalGradient.h" |
| 12 | |
commit-bot@chromium.org | ef93d29 | 2014-04-10 15:37:52 +0000 | [diff] [blame] | 13 | #if SK_SUPPORT_GPU |
joshualitt | 8ca93e7 | 2015-07-08 06:51:43 -0700 | [diff] [blame] | 14 | #include "GrPaint.h" |
egdaniel | 2d721d3 | 2015-11-11 13:06:05 -0800 | [diff] [blame] | 15 | #include "glsl/GrGLSLFragmentShaderBuilder.h" |
| 16 | #include "glsl/GrGLSLProgramBuilder.h" |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 17 | #include "glsl/GrGLSLProgramDataManager.h" |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 18 | // For brevity |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 19 | typedef GrGLSLProgramDataManager::UniformHandle UniformHandle; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 20 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 21 | static const SkScalar kErrorTol = 0.00001f; |
egdaniel | 8405ef9 | 2014-06-09 11:57:28 -0700 | [diff] [blame] | 22 | static const SkScalar kEdgeErrorTol = 5.f * kErrorTol; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 23 | |
| 24 | /** |
| 25 | * We have three general cases for 2pt conical gradients. First we always assume that |
| 26 | * the start radius <= end radius. Our first case (kInside_) is when the start circle |
| 27 | * is completely enclosed by the end circle. The second case (kOutside_) is the case |
| 28 | * when the start circle is either completely outside the end circle or the circles |
| 29 | * overlap. The final case (kEdge_) is when the start circle is inside the end one, |
| 30 | * but the two are just barely touching at 1 point along their edges. |
| 31 | */ |
| 32 | enum ConicalType { |
| 33 | kInside_ConicalType, |
| 34 | kOutside_ConicalType, |
| 35 | kEdge_ConicalType, |
| 36 | }; |
| 37 | |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 38 | ////////////////////////////////////////////////////////////////////////////// |
| 39 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 40 | static void set_matrix_edge_conical(const SkTwoPointConicalGradient& shader, |
| 41 | SkMatrix* invLMatrix) { |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 42 | // Inverse of the current local matrix is passed in then, |
| 43 | // translate to center1, rotate so center2 is on x axis. |
| 44 | const SkPoint& center1 = shader.getStartCenter(); |
| 45 | const SkPoint& center2 = shader.getEndCenter(); |
| 46 | |
| 47 | invLMatrix->postTranslate(-center1.fX, -center1.fY); |
| 48 | |
| 49 | SkPoint diff = center2 - center1; |
| 50 | SkScalar diffLen = diff.length(); |
| 51 | if (0 != diffLen) { |
| 52 | SkScalar invDiffLen = SkScalarInvert(diffLen); |
| 53 | SkMatrix rot; |
| 54 | rot.setSinCos(-SkScalarMul(invDiffLen, diff.fY), |
| 55 | SkScalarMul(invDiffLen, diff.fX)); |
| 56 | invLMatrix->postConcat(rot); |
| 57 | } |
| 58 | } |
| 59 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 60 | class Edge2PtConicalEffect : public GrGradientEffect { |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 61 | public: |
| 62 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 63 | static GrFragmentProcessor* Create(GrContext* ctx, |
| 64 | const SkTwoPointConicalGradient& shader, |
| 65 | const SkMatrix& matrix, |
| 66 | SkShader::TileMode tm) { |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 67 | return new Edge2PtConicalEffect(ctx, shader, matrix, tm); |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 68 | } |
| 69 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 70 | virtual ~Edge2PtConicalEffect() {} |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 71 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 72 | const char* name() const override { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 73 | return "Two-Point Conical Gradient Edge Touching"; |
| 74 | } |
| 75 | |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 76 | // The radial gradient parameters can collapse to a linear (instead of quadratic) equation. |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 77 | SkScalar center() const { return fCenterX1; } |
| 78 | SkScalar diffRadius() const { return fDiffRadius; } |
| 79 | SkScalar radius() const { return fRadius0; } |
| 80 | |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 81 | private: |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 82 | GrGLSLFragmentProcessor* onCreateGLSLInstance() const override; |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 83 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 84 | void onGetGLSLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override; |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame] | 85 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 86 | bool onIsEqual(const GrFragmentProcessor& sBase) const override { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 87 | const Edge2PtConicalEffect& s = sBase.cast<Edge2PtConicalEffect>(); |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 88 | return (INHERITED::onIsEqual(sBase) && |
| 89 | this->fCenterX1 == s.fCenterX1 && |
| 90 | this->fRadius0 == s.fRadius0 && |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 91 | this->fDiffRadius == s.fDiffRadius); |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 92 | } |
| 93 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 94 | Edge2PtConicalEffect(GrContext* ctx, |
| 95 | const SkTwoPointConicalGradient& shader, |
| 96 | const SkMatrix& matrix, |
| 97 | SkShader::TileMode tm) |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 98 | : INHERITED(ctx, shader, matrix, tm), |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 99 | fCenterX1(shader.getCenterX1()), |
| 100 | fRadius0(shader.getStartRadius()), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 101 | fDiffRadius(shader.getDiffRadius()){ |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 102 | this->initClassID<Edge2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 103 | // We should only be calling this shader if we are degenerate case with touching circles |
egdaniel | 8405ef9 | 2014-06-09 11:57:28 -0700 | [diff] [blame] | 104 | // When deciding if we are in edge case, we scaled by the end radius for cases when the |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 105 | // start radius was close to zero, otherwise we scaled by the start radius. In addition |
| 106 | // Our test for the edge case in set_matrix_circle_conical has a higher tolerance so we |
| 107 | // need the sqrt value below |
| 108 | SkASSERT(SkScalarAbs(SkScalarAbs(fDiffRadius) - fCenterX1) < |
| 109 | (fRadius0 < kErrorTol ? shader.getEndRadius() * kEdgeErrorTol : |
| 110 | fRadius0 * sqrt(kEdgeErrorTol))); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 111 | |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 112 | // We pass the linear part of the quadratic as a varying. |
| 113 | // float b = -2.0 * (fCenterX1 * x + fRadius0 * fDiffRadius * z) |
| 114 | fBTransform = this->getCoordTransform(); |
| 115 | SkMatrix& bMatrix = *fBTransform.accessMatrix(); |
| 116 | SkScalar r0dr = SkScalarMul(fRadius0, fDiffRadius); |
| 117 | bMatrix[SkMatrix::kMScaleX] = -2 * (SkScalarMul(fCenterX1, bMatrix[SkMatrix::kMScaleX]) + |
| 118 | SkScalarMul(r0dr, bMatrix[SkMatrix::kMPersp0])); |
| 119 | bMatrix[SkMatrix::kMSkewX] = -2 * (SkScalarMul(fCenterX1, bMatrix[SkMatrix::kMSkewX]) + |
| 120 | SkScalarMul(r0dr, bMatrix[SkMatrix::kMPersp1])); |
| 121 | bMatrix[SkMatrix::kMTransX] = -2 * (SkScalarMul(fCenterX1, bMatrix[SkMatrix::kMTransX]) + |
| 122 | SkScalarMul(r0dr, bMatrix[SkMatrix::kMPersp2])); |
| 123 | this->addCoordTransform(&fBTransform); |
| 124 | } |
| 125 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 126 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 127 | |
| 128 | // @{ |
| 129 | // Cache of values - these can change arbitrarily, EXCEPT |
| 130 | // we shouldn't change between degenerate and non-degenerate?! |
| 131 | |
| 132 | GrCoordTransform fBTransform; |
| 133 | SkScalar fCenterX1; |
| 134 | SkScalar fRadius0; |
| 135 | SkScalar fDiffRadius; |
| 136 | |
| 137 | // @} |
| 138 | |
| 139 | typedef GrGradientEffect INHERITED; |
| 140 | }; |
| 141 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 142 | class GLEdge2PtConicalEffect : public GrGLGradientEffect { |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 143 | public: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 144 | GLEdge2PtConicalEffect(const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 145 | virtual ~GLEdge2PtConicalEffect() { } |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 146 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 147 | virtual void emitCode(EmitArgs&) override; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 148 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 149 | static void GenKey(const GrProcessor&, const GrGLSLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 150 | |
| 151 | protected: |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 152 | void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override; |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 153 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 154 | UniformHandle fParamUni; |
| 155 | |
| 156 | const char* fVSVaryingName; |
| 157 | const char* fFSVaryingName; |
| 158 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 159 | // @{ |
| 160 | /// Values last uploaded as uniforms |
| 161 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 162 | SkScalar fCachedRadius; |
| 163 | SkScalar fCachedDiffRadius; |
| 164 | |
| 165 | // @} |
| 166 | |
| 167 | private: |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 168 | typedef GrGLGradientEffect INHERITED; |
| 169 | |
| 170 | }; |
| 171 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 172 | void Edge2PtConicalEffect::onGetGLSLProcessorKey(const GrGLSLCaps& caps, |
| 173 | GrProcessorKeyBuilder* b) const { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 174 | GLEdge2PtConicalEffect::GenKey(*this, caps, b); |
| 175 | } |
| 176 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 177 | GrGLSLFragmentProcessor* Edge2PtConicalEffect::onCreateGLSLInstance() const { |
halcanary | 385fe4d | 2015-08-26 13:07:48 -0700 | [diff] [blame] | 178 | return new GLEdge2PtConicalEffect(*this); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 179 | } |
skia.committer@gmail.com | 221b911 | 2014-04-04 03:04:32 +0000 | [diff] [blame] | 180 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 181 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(Edge2PtConicalEffect); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 182 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 183 | /* |
| 184 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 185 | */ |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 186 | const GrFragmentProcessor* Edge2PtConicalEffect::TestCreate(GrProcessorTestData* d) { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 187 | SkPoint center1 = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()}; |
| 188 | SkScalar radius1 = d->fRandom->nextUScalar1(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 189 | SkPoint center2; |
| 190 | SkScalar radius2; |
| 191 | do { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 192 | center2.set(d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 193 | // If the circles are identical the factory will give us an empty shader. |
| 194 | // This will happen if we pick identical centers |
| 195 | } while (center1 == center2); |
| 196 | |
| 197 | // Below makes sure that circle one is contained within circle two |
| 198 | // and both circles are touching on an edge |
| 199 | SkPoint diff = center2 - center1; |
| 200 | SkScalar diffLen = diff.length(); |
| 201 | radius2 = radius1 + diffLen; |
| 202 | |
| 203 | SkColor colors[kMaxRandomGradientColors]; |
| 204 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 205 | SkScalar* stops = stopsArray; |
| 206 | SkShader::TileMode tm; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 207 | int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tm); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 208 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 209 | center2, radius2, |
| 210 | colors, stops, colorCount, |
| 211 | tm)); |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 212 | const GrFragmentProcessor* fp = shader->asFragmentProcessor(d->fContext, |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 213 | GrTest::TestMatrix(d->fRandom), NULL, kNone_SkFilterQuality); |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 214 | GrAlwaysAssert(fp); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 215 | return fp; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 216 | } |
| 217 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 218 | GLEdge2PtConicalEffect::GLEdge2PtConicalEffect(const GrProcessor&) |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 219 | : fVSVaryingName(nullptr) |
| 220 | , fFSVaryingName(nullptr) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 221 | , fCachedRadius(-SK_ScalarMax) |
| 222 | , fCachedDiffRadius(-SK_ScalarMax) {} |
| 223 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 224 | void GLEdge2PtConicalEffect::emitCode(EmitArgs& args) { |
| 225 | const Edge2PtConicalEffect& ge = args.fFp.cast<Edge2PtConicalEffect>(); |
| 226 | this->emitUniforms(args.fBuilder, ge); |
egdaniel | 2d721d3 | 2015-11-11 13:06:05 -0800 | [diff] [blame] | 227 | fParamUni = args.fBuilder->addUniformArray(GrGLSLProgramBuilder::kFragment_Visibility, |
bsalomon | 422f56f | 2014-12-09 10:18:12 -0800 | [diff] [blame] | 228 | kFloat_GrSLType, kDefault_GrSLPrecision, |
| 229 | "Conical2FSParams", 3); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 230 | |
| 231 | SkString cName("c"); |
| 232 | SkString tName("t"); |
| 233 | SkString p0; // start radius |
| 234 | SkString p1; // start radius squared |
| 235 | SkString p2; // difference in radii (r1 - r0) |
| 236 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 237 | args.fBuilder->getUniformVariable(fParamUni).appendArrayAccess(0, &p0); |
| 238 | args.fBuilder->getUniformVariable(fParamUni).appendArrayAccess(1, &p1); |
| 239 | args.fBuilder->getUniformVariable(fParamUni).appendArrayAccess(2, &p2); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 240 | |
| 241 | // We interpolate the linear component in coords[1]. |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 242 | SkASSERT(args.fCoords[0].getType() == args.fCoords[1].getType()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 243 | const char* coords2D; |
| 244 | SkString bVar; |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame^] | 245 | GrGLSLFragmentBuilder* fragBuilder = args.fFragBuilder; |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 246 | if (kVec3f_GrSLType == args.fCoords[0].getType()) { |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame^] | 247 | fragBuilder->codeAppendf("\tvec3 interpolants = vec3(%s.xy / %s.z, %s.x / %s.z);\n", |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 248 | args.fCoords[0].c_str(), args.fCoords[0].c_str(), |
| 249 | args.fCoords[1].c_str(), args.fCoords[1].c_str()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 250 | coords2D = "interpolants.xy"; |
| 251 | bVar = "interpolants.z"; |
| 252 | } else { |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 253 | coords2D = args.fCoords[0].c_str(); |
| 254 | bVar.printf("%s.x", args.fCoords[1].c_str()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 255 | } |
| 256 | |
| 257 | // output will default to transparent black (we simply won't write anything |
| 258 | // else to it if invalid, instead of discarding or returning prematurely) |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame^] | 259 | fragBuilder->codeAppendf("\t%s = vec4(0.0,0.0,0.0,0.0);\n", args.fOutputColor); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 260 | |
| 261 | // c = (x^2)+(y^2) - params[1] |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame^] | 262 | fragBuilder->codeAppendf("\tfloat %s = dot(%s, %s) - %s;\n", |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 263 | cName.c_str(), coords2D, coords2D, p1.c_str()); |
| 264 | |
| 265 | // linear case: t = -c/b |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame^] | 266 | fragBuilder->codeAppendf("\tfloat %s = -(%s / %s);\n", tName.c_str(), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 267 | cName.c_str(), bVar.c_str()); |
| 268 | |
| 269 | // if r(t) > 0, then t will be the x coordinate |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame^] | 270 | fragBuilder->codeAppendf("\tif (%s * %s + %s > 0.0) {\n", tName.c_str(), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 271 | p2.c_str(), p0.c_str()); |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame^] | 272 | fragBuilder->codeAppend("\t"); |
| 273 | this->emitColor(args.fBuilder, |
| 274 | fragBuilder, |
| 275 | ge, |
| 276 | tName.c_str(), |
| 277 | args.fOutputColor, |
| 278 | args.fInputColor, |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 279 | args.fSamplers); |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame^] | 280 | fragBuilder->codeAppend("\t}\n"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 281 | } |
| 282 | |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 283 | void GLEdge2PtConicalEffect::onSetData(const GrGLSLProgramDataManager& pdman, |
| 284 | const GrProcessor& processor) { |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 285 | INHERITED::onSetData(pdman, processor); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 286 | const Edge2PtConicalEffect& data = processor.cast<Edge2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 287 | SkScalar radius0 = data.radius(); |
| 288 | SkScalar diffRadius = data.diffRadius(); |
| 289 | |
| 290 | if (fCachedRadius != radius0 || |
| 291 | fCachedDiffRadius != diffRadius) { |
| 292 | |
| 293 | float values[3] = { |
| 294 | SkScalarToFloat(radius0), |
| 295 | SkScalarToFloat(SkScalarMul(radius0, radius0)), |
| 296 | SkScalarToFloat(diffRadius) |
| 297 | }; |
| 298 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 299 | pdman.set1fv(fParamUni, 3, values); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 300 | fCachedRadius = radius0; |
| 301 | fCachedDiffRadius = diffRadius; |
| 302 | } |
| 303 | } |
| 304 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 305 | void GLEdge2PtConicalEffect::GenKey(const GrProcessor& processor, |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 306 | const GrGLSLCaps&, GrProcessorKeyBuilder* b) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 307 | b->add32(GenBaseGradientKey(processor)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 308 | } |
| 309 | |
| 310 | ////////////////////////////////////////////////////////////////////////////// |
| 311 | // Focal Conical Gradients |
| 312 | ////////////////////////////////////////////////////////////////////////////// |
| 313 | |
| 314 | static ConicalType set_matrix_focal_conical(const SkTwoPointConicalGradient& shader, |
| 315 | SkMatrix* invLMatrix, SkScalar* focalX) { |
| 316 | // Inverse of the current local matrix is passed in then, |
| 317 | // translate, scale, and rotate such that endCircle is unit circle on x-axis, |
| 318 | // and focal point is at the origin. |
| 319 | ConicalType conicalType; |
| 320 | const SkPoint& focal = shader.getStartCenter(); |
| 321 | const SkPoint& centerEnd = shader.getEndCenter(); |
| 322 | SkScalar radius = shader.getEndRadius(); |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 323 | SkScalar invRadius = 1.f / radius; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 324 | |
| 325 | SkMatrix matrix; |
| 326 | |
| 327 | matrix.setTranslate(-centerEnd.fX, -centerEnd.fY); |
| 328 | matrix.postScale(invRadius, invRadius); |
| 329 | |
| 330 | SkPoint focalTrans; |
| 331 | matrix.mapPoints(&focalTrans, &focal, 1); |
| 332 | *focalX = focalTrans.length(); |
| 333 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 334 | if (0.f != *focalX) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 335 | SkScalar invFocalX = SkScalarInvert(*focalX); |
| 336 | SkMatrix rot; |
| 337 | rot.setSinCos(-SkScalarMul(invFocalX, focalTrans.fY), |
| 338 | SkScalarMul(invFocalX, focalTrans.fX)); |
| 339 | matrix.postConcat(rot); |
| 340 | } |
| 341 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 342 | matrix.postTranslate(-(*focalX), 0.f); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 343 | |
| 344 | // If the focal point is touching the edge of the circle it will |
| 345 | // cause a degenerate case that must be handled separately |
egdaniel | 8405ef9 | 2014-06-09 11:57:28 -0700 | [diff] [blame] | 346 | // kEdgeErrorTol = 5 * kErrorTol was picked after manual testing the |
| 347 | // stability trade off versus the linear approx used in the Edge Shader |
| 348 | if (SkScalarAbs(1.f - (*focalX)) < kEdgeErrorTol) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 349 | return kEdge_ConicalType; |
| 350 | } |
| 351 | |
| 352 | // Scale factor 1 / (1 - focalX * focalX) |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 353 | SkScalar oneMinusF2 = 1.f - SkScalarMul(*focalX, *focalX); |
reed | 80ea19c | 2015-05-12 10:37:34 -0700 | [diff] [blame] | 354 | SkScalar s = SkScalarInvert(oneMinusF2); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 355 | |
| 356 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 357 | if (s >= 0.f) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 358 | conicalType = kInside_ConicalType; |
| 359 | matrix.postScale(s, s * SkScalarSqrt(oneMinusF2)); |
| 360 | } else { |
| 361 | conicalType = kOutside_ConicalType; |
| 362 | matrix.postScale(s, s); |
| 363 | } |
| 364 | |
| 365 | invLMatrix->postConcat(matrix); |
| 366 | |
| 367 | return conicalType; |
| 368 | } |
| 369 | |
| 370 | ////////////////////////////////////////////////////////////////////////////// |
| 371 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 372 | class FocalOutside2PtConicalEffect : public GrGradientEffect { |
| 373 | public: |
| 374 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 375 | static GrFragmentProcessor* Create(GrContext* ctx, |
| 376 | const SkTwoPointConicalGradient& shader, |
| 377 | const SkMatrix& matrix, |
| 378 | SkShader::TileMode tm, |
| 379 | SkScalar focalX) { |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 380 | return new FocalOutside2PtConicalEffect(ctx, shader, matrix, tm, focalX); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 381 | } |
| 382 | |
| 383 | virtual ~FocalOutside2PtConicalEffect() { } |
| 384 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 385 | const char* name() const override { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 386 | return "Two-Point Conical Gradient Focal Outside"; |
| 387 | } |
| 388 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 389 | bool isFlipped() const { return fIsFlipped; } |
| 390 | SkScalar focal() const { return fFocalX; } |
| 391 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 392 | private: |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 393 | GrGLSLFragmentProcessor* onCreateGLSLInstance() const override; |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 394 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 395 | void onGetGLSLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override; |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame] | 396 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 397 | bool onIsEqual(const GrFragmentProcessor& sBase) const override { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 398 | const FocalOutside2PtConicalEffect& s = sBase.cast<FocalOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 399 | return (INHERITED::onIsEqual(sBase) && |
| 400 | this->fFocalX == s.fFocalX && |
| 401 | this->fIsFlipped == s.fIsFlipped); |
| 402 | } |
| 403 | |
| 404 | FocalOutside2PtConicalEffect(GrContext* ctx, |
| 405 | const SkTwoPointConicalGradient& shader, |
| 406 | const SkMatrix& matrix, |
| 407 | SkShader::TileMode tm, |
| 408 | SkScalar focalX) |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 409 | : INHERITED(ctx, 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; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 429 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 430 | static void GenKey(const GrProcessor&, const GrGLSLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 431 | |
| 432 | protected: |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 433 | void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override; |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 434 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 435 | UniformHandle fParamUni; |
| 436 | |
| 437 | const char* fVSVaryingName; |
| 438 | const char* fFSVaryingName; |
| 439 | |
| 440 | bool fIsFlipped; |
| 441 | |
| 442 | // @{ |
| 443 | /// Values last uploaded as uniforms |
| 444 | |
| 445 | SkScalar fCachedFocal; |
| 446 | |
| 447 | // @} |
| 448 | |
| 449 | private: |
| 450 | typedef GrGLGradientEffect INHERITED; |
| 451 | |
| 452 | }; |
| 453 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 454 | void FocalOutside2PtConicalEffect::onGetGLSLProcessorKey(const GrGLSLCaps& caps, |
| 455 | GrProcessorKeyBuilder* b) const { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 456 | GLFocalOutside2PtConicalEffect::GenKey(*this, caps, b); |
| 457 | } |
| 458 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 459 | GrGLSLFragmentProcessor* FocalOutside2PtConicalEffect::onCreateGLSLInstance() const { |
halcanary | 385fe4d | 2015-08-26 13:07:48 -0700 | [diff] [blame] | 460 | return new GLFocalOutside2PtConicalEffect(*this); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 461 | } |
| 462 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 463 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(FocalOutside2PtConicalEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 464 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 465 | /* |
| 466 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 467 | */ |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 468 | const GrFragmentProcessor* FocalOutside2PtConicalEffect::TestCreate(GrProcessorTestData* d) { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 469 | SkPoint center1 = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()}; |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 470 | SkScalar radius1 = 0.f; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 471 | SkPoint center2; |
| 472 | SkScalar radius2; |
| 473 | do { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 474 | center2.set(d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 475 | // 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] | 476 | } while (center1 == center2); |
| 477 | SkPoint diff = center2 - center1; |
| 478 | SkScalar diffLen = diff.length(); |
| 479 | // Below makes sure that the focal point is not contained within circle two |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 480 | radius2 = d->fRandom->nextRangeF(0.f, diffLen); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 481 | |
| 482 | SkColor colors[kMaxRandomGradientColors]; |
| 483 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 484 | SkScalar* stops = stopsArray; |
| 485 | SkShader::TileMode tm; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 486 | int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tm); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 487 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 488 | center2, radius2, |
| 489 | colors, stops, colorCount, |
| 490 | tm)); |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 491 | const GrFragmentProcessor* fp = shader->asFragmentProcessor(d->fContext, |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 492 | GrTest::TestMatrix(d->fRandom), NULL, kNone_SkFilterQuality); |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 493 | GrAlwaysAssert(fp); |
| 494 | return fp; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 495 | } |
| 496 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 497 | GLFocalOutside2PtConicalEffect::GLFocalOutside2PtConicalEffect(const GrProcessor& processor) |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 498 | : fVSVaryingName(nullptr) |
| 499 | , fFSVaryingName(nullptr) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 500 | , fCachedFocal(SK_ScalarMax) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 501 | const FocalOutside2PtConicalEffect& data = processor.cast<FocalOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 502 | fIsFlipped = data.isFlipped(); |
| 503 | } |
| 504 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 505 | void GLFocalOutside2PtConicalEffect::emitCode(EmitArgs& args) { |
| 506 | const FocalOutside2PtConicalEffect& ge = args.fFp.cast<FocalOutside2PtConicalEffect>(); |
| 507 | this->emitUniforms(args.fBuilder, ge); |
egdaniel | 2d721d3 | 2015-11-11 13:06:05 -0800 | [diff] [blame] | 508 | fParamUni = args.fBuilder->addUniformArray(GrGLSLProgramBuilder::kFragment_Visibility, |
bsalomon | 422f56f | 2014-12-09 10:18:12 -0800 | [diff] [blame] | 509 | kFloat_GrSLType, kDefault_GrSLPrecision, |
| 510 | "Conical2FSParams", 2); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 511 | SkString tName("t"); |
| 512 | SkString p0; // focalX |
| 513 | SkString p1; // 1 - focalX * focalX |
| 514 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 515 | args.fBuilder->getUniformVariable(fParamUni).appendArrayAccess(0, &p0); |
| 516 | args.fBuilder->getUniformVariable(fParamUni).appendArrayAccess(1, &p1); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 517 | |
| 518 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame^] | 519 | GrGLSLFragmentBuilder* fragBuilder = args.fFragBuilder; |
| 520 | SkString coords2DString = fragBuilder->ensureFSCoords2D(args.fCoords, 0); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 521 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 522 | |
| 523 | // t = p.x * focal.x +/- sqrt(p.x^2 + (1 - focal.x^2) * p.y^2) |
| 524 | |
| 525 | // output will default to transparent black (we simply won't write anything |
| 526 | // else to it if invalid, instead of discarding or returning prematurely) |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame^] | 527 | fragBuilder->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] | 528 | |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame^] | 529 | fragBuilder->codeAppendf("\tfloat xs = %s.x * %s.x;\n", coords2D, coords2D); |
| 530 | fragBuilder->codeAppendf("\tfloat ys = %s.y * %s.y;\n", coords2D, coords2D); |
| 531 | fragBuilder->codeAppendf("\tfloat d = xs + %s * ys;\n", p1.c_str()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 532 | |
| 533 | // Must check to see if we flipped the circle order (to make sure start radius < end radius) |
| 534 | // If so we must also flip sign on sqrt |
| 535 | if (!fIsFlipped) { |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame^] | 536 | fragBuilder->codeAppendf("\tfloat %s = %s.x * %s + sqrt(d);\n", tName.c_str(), |
| 537 | coords2D, p0.c_str()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 538 | } else { |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame^] | 539 | fragBuilder->codeAppendf("\tfloat %s = %s.x * %s - sqrt(d);\n", tName.c_str(), |
| 540 | coords2D, p0.c_str()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 541 | } |
| 542 | |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame^] | 543 | fragBuilder->codeAppendf("\tif (%s >= 0.0 && d >= 0.0) {\n", tName.c_str()); |
| 544 | fragBuilder->codeAppend("\t\t"); |
| 545 | this->emitColor(args.fBuilder, |
| 546 | fragBuilder, |
| 547 | ge, |
| 548 | tName.c_str(), |
| 549 | args.fOutputColor, |
| 550 | args.fInputColor, |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 551 | args.fSamplers); |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame^] | 552 | fragBuilder->codeAppend("\t}\n"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 553 | } |
| 554 | |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 555 | void GLFocalOutside2PtConicalEffect::onSetData(const GrGLSLProgramDataManager& pdman, |
| 556 | const GrProcessor& processor) { |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 557 | INHERITED::onSetData(pdman, processor); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 558 | const FocalOutside2PtConicalEffect& data = processor.cast<FocalOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 559 | SkASSERT(data.isFlipped() == fIsFlipped); |
| 560 | SkScalar focal = data.focal(); |
| 561 | |
| 562 | if (fCachedFocal != focal) { |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 563 | SkScalar oneMinus2F = 1.f - SkScalarMul(focal, focal); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 564 | |
| 565 | float values[2] = { |
| 566 | SkScalarToFloat(focal), |
| 567 | SkScalarToFloat(oneMinus2F), |
| 568 | }; |
| 569 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 570 | pdman.set1fv(fParamUni, 2, values); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 571 | fCachedFocal = focal; |
| 572 | } |
| 573 | } |
| 574 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 575 | void GLFocalOutside2PtConicalEffect::GenKey(const GrProcessor& processor, |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 576 | const GrGLSLCaps&, GrProcessorKeyBuilder* b) { |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 577 | uint32_t* key = b->add32n(2); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 578 | key[0] = GenBaseGradientKey(processor); |
| 579 | key[1] = processor.cast<FocalOutside2PtConicalEffect>().isFlipped(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 580 | } |
| 581 | |
| 582 | ////////////////////////////////////////////////////////////////////////////// |
| 583 | |
| 584 | class GLFocalInside2PtConicalEffect; |
| 585 | |
| 586 | class FocalInside2PtConicalEffect : public GrGradientEffect { |
| 587 | public: |
| 588 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 589 | static GrFragmentProcessor* Create(GrContext* ctx, |
| 590 | const SkTwoPointConicalGradient& shader, |
| 591 | const SkMatrix& matrix, |
| 592 | SkShader::TileMode tm, |
| 593 | SkScalar focalX) { |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 594 | return new FocalInside2PtConicalEffect(ctx, shader, matrix, tm, focalX); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 595 | } |
| 596 | |
| 597 | virtual ~FocalInside2PtConicalEffect() {} |
| 598 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 599 | const char* name() const override { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 600 | return "Two-Point Conical Gradient Focal Inside"; |
| 601 | } |
| 602 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 603 | SkScalar focal() const { return fFocalX; } |
| 604 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 605 | typedef GLFocalInside2PtConicalEffect GLSLProcessor; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 606 | |
| 607 | private: |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 608 | GrGLSLFragmentProcessor* onCreateGLSLInstance() const override; |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 609 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 610 | void onGetGLSLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override; |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame] | 611 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 612 | bool onIsEqual(const GrFragmentProcessor& sBase) const override { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 613 | const FocalInside2PtConicalEffect& s = sBase.cast<FocalInside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 614 | return (INHERITED::onIsEqual(sBase) && |
| 615 | this->fFocalX == s.fFocalX); |
| 616 | } |
| 617 | |
| 618 | FocalInside2PtConicalEffect(GrContext* ctx, |
| 619 | const SkTwoPointConicalGradient& shader, |
| 620 | const SkMatrix& matrix, |
| 621 | SkShader::TileMode tm, |
| 622 | SkScalar focalX) |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 623 | : INHERITED(ctx, shader, matrix, tm), fFocalX(focalX) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 624 | this->initClassID<FocalInside2PtConicalEffect>(); |
| 625 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 626 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 627 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 628 | |
| 629 | SkScalar fFocalX; |
| 630 | |
| 631 | typedef GrGradientEffect INHERITED; |
| 632 | }; |
| 633 | |
| 634 | class GLFocalInside2PtConicalEffect : public GrGLGradientEffect { |
| 635 | public: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 636 | GLFocalInside2PtConicalEffect(const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 637 | virtual ~GLFocalInside2PtConicalEffect() {} |
| 638 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 639 | virtual void emitCode(EmitArgs&) override; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 640 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 641 | static void GenKey(const GrProcessor&, const GrGLSLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 642 | |
| 643 | protected: |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 644 | void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override; |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 645 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 646 | UniformHandle fFocalUni; |
| 647 | |
| 648 | const char* fVSVaryingName; |
| 649 | const char* fFSVaryingName; |
| 650 | |
| 651 | // @{ |
| 652 | /// Values last uploaded as uniforms |
| 653 | |
| 654 | SkScalar fCachedFocal; |
| 655 | |
| 656 | // @} |
| 657 | |
| 658 | private: |
| 659 | typedef GrGLGradientEffect INHERITED; |
| 660 | |
| 661 | }; |
| 662 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 663 | void FocalInside2PtConicalEffect::onGetGLSLProcessorKey(const GrGLSLCaps& caps, |
| 664 | GrProcessorKeyBuilder* b) const { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 665 | GLFocalInside2PtConicalEffect::GenKey(*this, caps, b); |
| 666 | } |
| 667 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 668 | GrGLSLFragmentProcessor* FocalInside2PtConicalEffect::onCreateGLSLInstance() const { |
halcanary | 385fe4d | 2015-08-26 13:07:48 -0700 | [diff] [blame] | 669 | return new GLFocalInside2PtConicalEffect(*this); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 670 | } |
| 671 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 672 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(FocalInside2PtConicalEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 673 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 674 | /* |
| 675 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 676 | */ |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 677 | const GrFragmentProcessor* FocalInside2PtConicalEffect::TestCreate(GrProcessorTestData* d) { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 678 | SkPoint center1 = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()}; |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 679 | SkScalar radius1 = 0.f; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 680 | SkPoint center2; |
| 681 | SkScalar radius2; |
| 682 | do { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 683 | center2.set(d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 684 | // Below makes sure radius2 is larger enouch such that the focal point |
| 685 | // is inside the end circle |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 686 | SkScalar increase = d->fRandom->nextUScalar1(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 687 | SkPoint diff = center2 - center1; |
| 688 | SkScalar diffLen = diff.length(); |
| 689 | radius2 = diffLen + increase; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 690 | // If the circles are identical the factory will give us an empty shader. |
| 691 | } while (radius1 == radius2 && center1 == center2); |
| 692 | |
| 693 | SkColor colors[kMaxRandomGradientColors]; |
| 694 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 695 | SkScalar* stops = stopsArray; |
| 696 | SkShader::TileMode tm; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 697 | int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tm); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 698 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 699 | center2, radius2, |
| 700 | colors, stops, colorCount, |
| 701 | tm)); |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 702 | const GrFragmentProcessor* fp = shader->asFragmentProcessor(d->fContext, |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 703 | GrTest::TestMatrix(d->fRandom), NULL, kNone_SkFilterQuality); |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 704 | GrAlwaysAssert(fp); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 705 | return fp; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 706 | } |
| 707 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 708 | GLFocalInside2PtConicalEffect::GLFocalInside2PtConicalEffect(const GrProcessor&) |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 709 | : fVSVaryingName(nullptr) |
| 710 | , fFSVaryingName(nullptr) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 711 | , fCachedFocal(SK_ScalarMax) {} |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 712 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 713 | void GLFocalInside2PtConicalEffect::emitCode(EmitArgs& args) { |
| 714 | const FocalInside2PtConicalEffect& ge = args.fFp.cast<FocalInside2PtConicalEffect>(); |
| 715 | this->emitUniforms(args.fBuilder, ge); |
egdaniel | 2d721d3 | 2015-11-11 13:06:05 -0800 | [diff] [blame] | 716 | fFocalUni = args.fBuilder->addUniform(GrGLSLProgramBuilder::kFragment_Visibility, |
| 717 | kFloat_GrSLType, kDefault_GrSLPrecision, |
| 718 | "Conical2FSParams"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 719 | SkString tName("t"); |
| 720 | |
| 721 | // this is the distance along x-axis from the end center to focal point in |
| 722 | // transformed coordinates |
egdaniel | 0d3f061 | 2015-10-21 10:45:48 -0700 | [diff] [blame] | 723 | GrGLSLShaderVar focal = args.fBuilder->getUniformVariable(fFocalUni); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 724 | |
| 725 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame^] | 726 | GrGLSLFragmentBuilder* fragBuilder = args.fFragBuilder; |
| 727 | SkString coords2DString = fragBuilder->ensureFSCoords2D(args.fCoords, 0); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 728 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 729 | |
| 730 | // t = p.x * focalX + length(p) |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame^] | 731 | fragBuilder->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] | 732 | coords2D, focal.c_str(), coords2D); |
| 733 | |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame^] | 734 | this->emitColor(args.fBuilder, |
| 735 | fragBuilder, |
| 736 | ge, |
| 737 | tName.c_str(), |
| 738 | args.fOutputColor, |
| 739 | args.fInputColor, |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 740 | args.fSamplers); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 741 | } |
| 742 | |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 743 | void GLFocalInside2PtConicalEffect::onSetData(const GrGLSLProgramDataManager& pdman, |
| 744 | const GrProcessor& processor) { |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 745 | INHERITED::onSetData(pdman, processor); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 746 | const FocalInside2PtConicalEffect& data = processor.cast<FocalInside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 747 | SkScalar focal = data.focal(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 748 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 749 | if (fCachedFocal != focal) { |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 750 | pdman.set1f(fFocalUni, SkScalarToFloat(focal)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 751 | fCachedFocal = focal; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 752 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 753 | } |
| 754 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 755 | void GLFocalInside2PtConicalEffect::GenKey(const GrProcessor& processor, |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 756 | const GrGLSLCaps&, GrProcessorKeyBuilder* b) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 757 | b->add32(GenBaseGradientKey(processor)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 758 | } |
| 759 | |
| 760 | ////////////////////////////////////////////////////////////////////////////// |
| 761 | // Circle Conical Gradients |
| 762 | ////////////////////////////////////////////////////////////////////////////// |
| 763 | |
| 764 | struct CircleConicalInfo { |
| 765 | SkPoint fCenterEnd; |
| 766 | SkScalar fA; |
| 767 | SkScalar fB; |
| 768 | SkScalar fC; |
| 769 | }; |
| 770 | |
| 771 | // Returns focal distance along x-axis in transformed coords |
| 772 | static ConicalType set_matrix_circle_conical(const SkTwoPointConicalGradient& shader, |
| 773 | SkMatrix* invLMatrix, CircleConicalInfo* info) { |
| 774 | // Inverse of the current local matrix is passed in then, |
| 775 | // translate and scale such that start circle is on the origin and has radius 1 |
| 776 | const SkPoint& centerStart = shader.getStartCenter(); |
| 777 | const SkPoint& centerEnd = shader.getEndCenter(); |
| 778 | SkScalar radiusStart = shader.getStartRadius(); |
| 779 | SkScalar radiusEnd = shader.getEndRadius(); |
| 780 | |
| 781 | SkMatrix matrix; |
| 782 | |
| 783 | matrix.setTranslate(-centerStart.fX, -centerStart.fY); |
| 784 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 785 | SkScalar invStartRad = 1.f / radiusStart; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 786 | matrix.postScale(invStartRad, invStartRad); |
| 787 | |
| 788 | radiusEnd /= radiusStart; |
| 789 | |
| 790 | SkPoint centerEndTrans; |
| 791 | matrix.mapPoints(¢erEndTrans, ¢erEnd, 1); |
| 792 | |
| 793 | SkScalar A = centerEndTrans.fX * centerEndTrans.fX + centerEndTrans.fY * centerEndTrans.fY |
| 794 | - radiusEnd * radiusEnd + 2 * radiusEnd - 1; |
| 795 | |
| 796 | // Check to see if start circle is inside end circle with edges touching. |
| 797 | // 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] | 798 | // to the edge shader. kEdgeErrorTol = 5 * kErrorTol was picked after manual testing |
| 799 | // so that C = 1 / A is stable, and the linear approximation used in the Edge shader is |
| 800 | // still accurate. |
| 801 | if (SkScalarAbs(A) < kEdgeErrorTol) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 802 | return kEdge_ConicalType; |
| 803 | } |
| 804 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 805 | SkScalar C = 1.f / A; |
| 806 | SkScalar B = (radiusEnd - 1.f) * C; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 807 | |
| 808 | matrix.postScale(C, C); |
| 809 | |
| 810 | invLMatrix->postConcat(matrix); |
| 811 | |
| 812 | info->fCenterEnd = centerEndTrans; |
| 813 | info->fA = A; |
| 814 | info->fB = B; |
| 815 | info->fC = C; |
| 816 | |
| 817 | // 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] | 818 | if (A < 0.f) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 819 | return kInside_ConicalType; |
| 820 | } |
| 821 | return kOutside_ConicalType; |
| 822 | } |
| 823 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 824 | class CircleInside2PtConicalEffect : public GrGradientEffect { |
| 825 | public: |
| 826 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 827 | static GrFragmentProcessor* Create(GrContext* ctx, |
| 828 | const SkTwoPointConicalGradient& shader, |
| 829 | const SkMatrix& matrix, |
| 830 | SkShader::TileMode tm, |
| 831 | const CircleConicalInfo& info) { |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 832 | return new CircleInside2PtConicalEffect(ctx, shader, matrix, tm, info); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 833 | } |
| 834 | |
| 835 | virtual ~CircleInside2PtConicalEffect() {} |
| 836 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 837 | const char* name() const override { return "Two-Point Conical Gradient Inside"; } |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 838 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 839 | SkScalar centerX() const { return fInfo.fCenterEnd.fX; } |
| 840 | SkScalar centerY() const { return fInfo.fCenterEnd.fY; } |
| 841 | SkScalar A() const { return fInfo.fA; } |
| 842 | SkScalar B() const { return fInfo.fB; } |
| 843 | SkScalar C() const { return fInfo.fC; } |
| 844 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 845 | private: |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 846 | GrGLSLFragmentProcessor* onCreateGLSLInstance() const override; |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 847 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 848 | virtual void onGetGLSLProcessorKey(const GrGLSLCaps& caps, |
| 849 | GrProcessorKeyBuilder* b) const override; |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame] | 850 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 851 | bool onIsEqual(const GrFragmentProcessor& sBase) const override { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 852 | const CircleInside2PtConicalEffect& s = sBase.cast<CircleInside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 853 | return (INHERITED::onIsEqual(sBase) && |
| 854 | this->fInfo.fCenterEnd == s.fInfo.fCenterEnd && |
| 855 | this->fInfo.fA == s.fInfo.fA && |
| 856 | this->fInfo.fB == s.fInfo.fB && |
| 857 | this->fInfo.fC == s.fInfo.fC); |
| 858 | } |
| 859 | |
| 860 | CircleInside2PtConicalEffect(GrContext* ctx, |
| 861 | const SkTwoPointConicalGradient& shader, |
| 862 | const SkMatrix& matrix, |
| 863 | SkShader::TileMode tm, |
| 864 | const CircleConicalInfo& info) |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 865 | : INHERITED(ctx, shader, matrix, tm), fInfo(info) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 866 | this->initClassID<CircleInside2PtConicalEffect>(); |
| 867 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 868 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 869 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 870 | |
| 871 | const CircleConicalInfo fInfo; |
| 872 | |
| 873 | typedef GrGradientEffect INHERITED; |
| 874 | }; |
| 875 | |
| 876 | class GLCircleInside2PtConicalEffect : public GrGLGradientEffect { |
| 877 | public: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 878 | GLCircleInside2PtConicalEffect(const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 879 | virtual ~GLCircleInside2PtConicalEffect() {} |
| 880 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 881 | virtual void emitCode(EmitArgs&) override; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 882 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 883 | static void GenKey(const GrProcessor&, const GrGLSLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 884 | |
| 885 | protected: |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 886 | void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override; |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 887 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 888 | UniformHandle fCenterUni; |
| 889 | UniformHandle fParamUni; |
| 890 | |
| 891 | const char* fVSVaryingName; |
| 892 | const char* fFSVaryingName; |
| 893 | |
| 894 | // @{ |
| 895 | /// Values last uploaded as uniforms |
| 896 | |
| 897 | SkScalar fCachedCenterX; |
| 898 | SkScalar fCachedCenterY; |
| 899 | SkScalar fCachedA; |
| 900 | SkScalar fCachedB; |
| 901 | SkScalar fCachedC; |
| 902 | |
| 903 | // @} |
| 904 | |
| 905 | private: |
| 906 | typedef GrGLGradientEffect INHERITED; |
| 907 | |
| 908 | }; |
| 909 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 910 | void CircleInside2PtConicalEffect::onGetGLSLProcessorKey(const GrGLSLCaps& caps, |
| 911 | GrProcessorKeyBuilder* b) const { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 912 | GLCircleInside2PtConicalEffect::GenKey(*this, caps, b); |
| 913 | } |
| 914 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 915 | GrGLSLFragmentProcessor* CircleInside2PtConicalEffect::onCreateGLSLInstance() const { |
halcanary | 385fe4d | 2015-08-26 13:07:48 -0700 | [diff] [blame] | 916 | return new GLCircleInside2PtConicalEffect(*this); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 917 | } |
| 918 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 919 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(CircleInside2PtConicalEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 920 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 921 | /* |
| 922 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 923 | */ |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 924 | const GrFragmentProcessor* CircleInside2PtConicalEffect::TestCreate(GrProcessorTestData* d) { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 925 | SkPoint center1 = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()}; |
| 926 | 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] | 927 | SkPoint center2; |
| 928 | SkScalar radius2; |
| 929 | do { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 930 | center2.set(d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 931 | // Below makes sure that circle one is contained within circle two |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 932 | SkScalar increase = d->fRandom->nextUScalar1(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 933 | SkPoint diff = center2 - center1; |
| 934 | SkScalar diffLen = diff.length(); |
| 935 | radius2 = radius1 + diffLen + increase; |
| 936 | // If the circles are identical the factory will give us an empty shader. |
| 937 | } while (radius1 == radius2 && center1 == center2); |
| 938 | |
| 939 | SkColor colors[kMaxRandomGradientColors]; |
| 940 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 941 | SkScalar* stops = stopsArray; |
| 942 | SkShader::TileMode tm; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 943 | int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tm); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 944 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 945 | center2, radius2, |
| 946 | colors, stops, colorCount, |
| 947 | tm)); |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 948 | const GrFragmentProcessor* fp = shader->asFragmentProcessor(d->fContext, |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 949 | GrTest::TestMatrix(d->fRandom), NULL, kNone_SkFilterQuality); |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 950 | GrAlwaysAssert(fp); |
joshualitt | 8ca93e7 | 2015-07-08 06:51:43 -0700 | [diff] [blame] | 951 | return fp; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 952 | } |
| 953 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 954 | GLCircleInside2PtConicalEffect::GLCircleInside2PtConicalEffect(const GrProcessor& processor) |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 955 | : fVSVaryingName(nullptr) |
| 956 | , fFSVaryingName(nullptr) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 957 | , fCachedCenterX(SK_ScalarMax) |
| 958 | , fCachedCenterY(SK_ScalarMax) |
| 959 | , fCachedA(SK_ScalarMax) |
| 960 | , fCachedB(SK_ScalarMax) |
| 961 | , fCachedC(SK_ScalarMax) {} |
| 962 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 963 | void GLCircleInside2PtConicalEffect::emitCode(EmitArgs& args) { |
| 964 | const CircleInside2PtConicalEffect& ge = args.fFp.cast<CircleInside2PtConicalEffect>(); |
| 965 | this->emitUniforms(args.fBuilder, ge); |
egdaniel | 2d721d3 | 2015-11-11 13:06:05 -0800 | [diff] [blame] | 966 | fCenterUni = args.fBuilder->addUniform(GrGLSLProgramBuilder::kFragment_Visibility, |
| 967 | kVec2f_GrSLType, kDefault_GrSLPrecision, |
| 968 | "Conical2FSCenter"); |
| 969 | fParamUni = args.fBuilder->addUniform(GrGLSLProgramBuilder::kFragment_Visibility, |
| 970 | kVec3f_GrSLType, kDefault_GrSLPrecision, |
| 971 | "Conical2FSParams"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 972 | SkString tName("t"); |
| 973 | |
egdaniel | 0d3f061 | 2015-10-21 10:45:48 -0700 | [diff] [blame] | 974 | GrGLSLShaderVar center = args.fBuilder->getUniformVariable(fCenterUni); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 975 | // params.x = A |
| 976 | // params.y = B |
| 977 | // params.z = C |
egdaniel | 0d3f061 | 2015-10-21 10:45:48 -0700 | [diff] [blame] | 978 | GrGLSLShaderVar params = args.fBuilder->getUniformVariable(fParamUni); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 979 | |
| 980 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame^] | 981 | GrGLSLFragmentBuilder* fragBuilder = args.fFragBuilder; |
| 982 | SkString coords2DString = fragBuilder->ensureFSCoords2D(args.fCoords, 0); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 983 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 984 | |
| 985 | // p = coords2D |
| 986 | // e = center end |
| 987 | // r = radius end |
| 988 | // A = dot(e, e) - r^2 + 2 * r - 1 |
| 989 | // B = (r -1) / A |
| 990 | // C = 1 / A |
| 991 | // d = dot(e, p) + B |
| 992 | // t = d +/- sqrt(d^2 - A * dot(p, p) + C) |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame^] | 993 | fragBuilder->codeAppendf("\tfloat pDotp = dot(%s, %s);\n", coords2D, coords2D); |
| 994 | fragBuilder->codeAppendf("\tfloat d = dot(%s, %s) + %s.y;\n", coords2D, center.c_str(), |
| 995 | params.c_str()); |
| 996 | fragBuilder->codeAppendf("\tfloat %s = d + sqrt(d * d - %s.x * pDotp + %s.z);\n", |
| 997 | tName.c_str(), params.c_str(), params.c_str()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 998 | |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame^] | 999 | this->emitColor(args.fBuilder, |
| 1000 | fragBuilder, |
| 1001 | ge, |
| 1002 | tName.c_str(), |
| 1003 | args.fOutputColor, |
| 1004 | args.fInputColor, |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 1005 | args.fSamplers); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1006 | } |
| 1007 | |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 1008 | void GLCircleInside2PtConicalEffect::onSetData(const GrGLSLProgramDataManager& pdman, |
| 1009 | const GrProcessor& processor) { |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 1010 | INHERITED::onSetData(pdman, processor); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 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, |
| 1043 | const SkTwoPointConicalGradient& shader, |
| 1044 | const SkMatrix& matrix, |
| 1045 | SkShader::TileMode tm, |
| 1046 | const CircleConicalInfo& info) { |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 1047 | return new CircleOutside2PtConicalEffect(ctx, shader, matrix, tm, info); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1048 | } |
| 1049 | |
| 1050 | virtual ~CircleOutside2PtConicalEffect() {} |
| 1051 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 1052 | const char* name() const override { return "Two-Point Conical Gradient Outside"; } |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 1053 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1054 | SkScalar centerX() const { return fInfo.fCenterEnd.fX; } |
| 1055 | SkScalar centerY() const { return fInfo.fCenterEnd.fY; } |
| 1056 | SkScalar A() const { return fInfo.fA; } |
| 1057 | SkScalar B() const { return fInfo.fB; } |
| 1058 | SkScalar C() const { return fInfo.fC; } |
| 1059 | SkScalar tLimit() const { return fTLimit; } |
| 1060 | bool isFlipped() const { return fIsFlipped; } |
| 1061 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1062 | private: |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 1063 | GrGLSLFragmentProcessor* onCreateGLSLInstance() const override; |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 1064 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 1065 | void onGetGLSLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override; |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame] | 1066 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 1067 | bool onIsEqual(const GrFragmentProcessor& sBase) const override { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 1068 | const CircleOutside2PtConicalEffect& s = sBase.cast<CircleOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1069 | return (INHERITED::onIsEqual(sBase) && |
| 1070 | this->fInfo.fCenterEnd == s.fInfo.fCenterEnd && |
| 1071 | this->fInfo.fA == s.fInfo.fA && |
| 1072 | this->fInfo.fB == s.fInfo.fB && |
| 1073 | this->fInfo.fC == s.fInfo.fC && |
| 1074 | this->fTLimit == s.fTLimit && |
| 1075 | this->fIsFlipped == s.fIsFlipped); |
| 1076 | } |
| 1077 | |
| 1078 | CircleOutside2PtConicalEffect(GrContext* ctx, |
| 1079 | const SkTwoPointConicalGradient& shader, |
| 1080 | const SkMatrix& matrix, |
| 1081 | SkShader::TileMode tm, |
| 1082 | const CircleConicalInfo& info) |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 1083 | : INHERITED(ctx, shader, matrix, tm), fInfo(info) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 1084 | this->initClassID<CircleOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1085 | if (shader.getStartRadius() != shader.getEndRadius()) { |
reed | 80ea19c | 2015-05-12 10:37:34 -0700 | [diff] [blame] | 1086 | fTLimit = shader.getStartRadius() / (shader.getStartRadius() - shader.getEndRadius()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1087 | } else { |
| 1088 | fTLimit = SK_ScalarMin; |
| 1089 | } |
| 1090 | |
| 1091 | fIsFlipped = shader.isFlippedGrad(); |
| 1092 | } |
| 1093 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1094 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1095 | |
| 1096 | const CircleConicalInfo fInfo; |
| 1097 | SkScalar fTLimit; |
| 1098 | bool fIsFlipped; |
| 1099 | |
| 1100 | typedef GrGradientEffect INHERITED; |
| 1101 | }; |
| 1102 | |
| 1103 | class GLCircleOutside2PtConicalEffect : public GrGLGradientEffect { |
| 1104 | public: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 1105 | GLCircleOutside2PtConicalEffect(const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1106 | virtual ~GLCircleOutside2PtConicalEffect() {} |
| 1107 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 1108 | virtual void emitCode(EmitArgs&) override; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1109 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 1110 | static void GenKey(const GrProcessor&, const GrGLSLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1111 | |
| 1112 | protected: |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 1113 | void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override; |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 1114 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1115 | UniformHandle fCenterUni; |
| 1116 | UniformHandle fParamUni; |
| 1117 | |
| 1118 | const char* fVSVaryingName; |
| 1119 | const char* fFSVaryingName; |
| 1120 | |
| 1121 | bool fIsFlipped; |
| 1122 | |
| 1123 | // @{ |
| 1124 | /// Values last uploaded as uniforms |
| 1125 | |
| 1126 | SkScalar fCachedCenterX; |
| 1127 | SkScalar fCachedCenterY; |
| 1128 | SkScalar fCachedA; |
| 1129 | SkScalar fCachedB; |
| 1130 | SkScalar fCachedC; |
| 1131 | SkScalar fCachedTLimit; |
| 1132 | |
| 1133 | // @} |
| 1134 | |
| 1135 | private: |
| 1136 | typedef GrGLGradientEffect INHERITED; |
| 1137 | |
| 1138 | }; |
| 1139 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 1140 | void CircleOutside2PtConicalEffect::onGetGLSLProcessorKey(const GrGLSLCaps& caps, |
| 1141 | GrProcessorKeyBuilder* b) const { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 1142 | GLCircleOutside2PtConicalEffect::GenKey(*this, caps, b); |
| 1143 | } |
| 1144 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 1145 | GrGLSLFragmentProcessor* CircleOutside2PtConicalEffect::onCreateGLSLInstance() const { |
halcanary | 385fe4d | 2015-08-26 13:07:48 -0700 | [diff] [blame] | 1146 | return new GLCircleOutside2PtConicalEffect(*this); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1147 | } |
| 1148 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1149 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(CircleOutside2PtConicalEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1150 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 1151 | /* |
| 1152 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 1153 | */ |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 1154 | const GrFragmentProcessor* CircleOutside2PtConicalEffect::TestCreate(GrProcessorTestData* d) { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 1155 | SkPoint center1 = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()}; |
| 1156 | 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] | 1157 | SkPoint center2; |
| 1158 | SkScalar radius2; |
| 1159 | SkScalar diffLen; |
| 1160 | do { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 1161 | center2.set(d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1162 | // If the circles share a center than we can't be in the outside case |
| 1163 | } while (center1 == center2); |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 1164 | SkPoint diff = center2 - center1; |
| 1165 | diffLen = diff.length(); |
| 1166 | // Below makes sure that circle one is not contained within circle two |
| 1167 | // and have radius2 >= radius to match sorting on cpu side |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 1168 | radius2 = radius1 + d->fRandom->nextRangeF(0.f, diffLen); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1169 | |
| 1170 | SkColor colors[kMaxRandomGradientColors]; |
| 1171 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 1172 | SkScalar* stops = stopsArray; |
| 1173 | SkShader::TileMode tm; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 1174 | int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tm); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1175 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 1176 | center2, radius2, |
| 1177 | colors, stops, colorCount, |
| 1178 | tm)); |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 1179 | const GrFragmentProcessor* fp = shader->asFragmentProcessor( |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 1180 | d->fContext,GrTest::TestMatrix(d->fRandom), NULL, kNone_SkFilterQuality); |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 1181 | GrAlwaysAssert(fp); |
joshualitt | 8ca93e7 | 2015-07-08 06:51:43 -0700 | [diff] [blame] | 1182 | return fp; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1183 | } |
| 1184 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 1185 | GLCircleOutside2PtConicalEffect::GLCircleOutside2PtConicalEffect(const GrProcessor& processor) |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 1186 | : fVSVaryingName(nullptr) |
| 1187 | , fFSVaryingName(nullptr) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1188 | , fCachedCenterX(SK_ScalarMax) |
| 1189 | , fCachedCenterY(SK_ScalarMax) |
| 1190 | , fCachedA(SK_ScalarMax) |
| 1191 | , fCachedB(SK_ScalarMax) |
| 1192 | , fCachedC(SK_ScalarMax) |
| 1193 | , fCachedTLimit(SK_ScalarMax) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1194 | const CircleOutside2PtConicalEffect& data = processor.cast<CircleOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1195 | fIsFlipped = data.isFlipped(); |
| 1196 | } |
| 1197 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 1198 | void GLCircleOutside2PtConicalEffect::emitCode(EmitArgs& args) { |
| 1199 | const CircleOutside2PtConicalEffect& ge = args.fFp.cast<CircleOutside2PtConicalEffect>(); |
| 1200 | this->emitUniforms(args.fBuilder, ge); |
egdaniel | 2d721d3 | 2015-11-11 13:06:05 -0800 | [diff] [blame] | 1201 | fCenterUni = args.fBuilder->addUniform(GrGLSLProgramBuilder::kFragment_Visibility, |
| 1202 | kVec2f_GrSLType, kDefault_GrSLPrecision, |
| 1203 | "Conical2FSCenter"); |
| 1204 | fParamUni = args.fBuilder->addUniform(GrGLSLProgramBuilder::kFragment_Visibility, |
| 1205 | kVec4f_GrSLType, kDefault_GrSLPrecision, |
| 1206 | "Conical2FSParams"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1207 | SkString tName("t"); |
| 1208 | |
egdaniel | 0d3f061 | 2015-10-21 10:45:48 -0700 | [diff] [blame] | 1209 | GrGLSLShaderVar center = args.fBuilder->getUniformVariable(fCenterUni); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1210 | // params.x = A |
| 1211 | // params.y = B |
| 1212 | // params.z = C |
egdaniel | 0d3f061 | 2015-10-21 10:45:48 -0700 | [diff] [blame] | 1213 | GrGLSLShaderVar params = args.fBuilder->getUniformVariable(fParamUni); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1214 | |
| 1215 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame^] | 1216 | GrGLSLFragmentBuilder* fragBuilder = args.fFragBuilder; |
| 1217 | SkString coords2DString = fragBuilder->ensureFSCoords2D(args.fCoords, 0); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 1218 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1219 | |
| 1220 | // output will default to transparent black (we simply won't write anything |
| 1221 | // else to it if invalid, instead of discarding or returning prematurely) |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame^] | 1222 | fragBuilder->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] | 1223 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1224 | // p = coords2D |
| 1225 | // e = center end |
| 1226 | // r = radius end |
| 1227 | // A = dot(e, e) - r^2 + 2 * r - 1 |
| 1228 | // B = (r -1) / A |
| 1229 | // C = 1 / A |
| 1230 | // d = dot(e, p) + B |
| 1231 | // t = d +/- sqrt(d^2 - A * dot(p, p) + C) |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1232 | |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame^] | 1233 | fragBuilder->codeAppendf("\tfloat pDotp = dot(%s, %s);\n", coords2D, coords2D); |
| 1234 | fragBuilder->codeAppendf("\tfloat d = dot(%s, %s) + %s.y;\n", coords2D, center.c_str(), |
| 1235 | params.c_str()); |
| 1236 | fragBuilder->codeAppendf("\tfloat deter = d * d - %s.x * pDotp + %s.z;\n", params.c_str(), |
| 1237 | params.c_str()); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1238 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1239 | // Must check to see if we flipped the circle order (to make sure start radius < end radius) |
| 1240 | // If so we must also flip sign on sqrt |
| 1241 | if (!fIsFlipped) { |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame^] | 1242 | fragBuilder->codeAppendf("\tfloat %s = d + sqrt(deter);\n", tName.c_str()); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1243 | } else { |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame^] | 1244 | fragBuilder->codeAppendf("\tfloat %s = d - sqrt(deter);\n", tName.c_str()); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1245 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1246 | |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame^] | 1247 | fragBuilder->codeAppendf("\tif (%s >= %s.w && deter >= 0.0) {\n", tName.c_str(), params.c_str()); |
| 1248 | fragBuilder->codeAppend("\t\t"); |
| 1249 | this->emitColor(args.fBuilder, |
| 1250 | fragBuilder, |
| 1251 | ge, |
| 1252 | tName.c_str(), |
| 1253 | args.fOutputColor, |
| 1254 | args.fInputColor, |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 1255 | args.fSamplers); |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame^] | 1256 | fragBuilder->codeAppend("\t}\n"); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1257 | } |
| 1258 | |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 1259 | void GLCircleOutside2PtConicalEffect::onSetData(const GrGLSLProgramDataManager& pdman, |
| 1260 | const GrProcessor& processor) { |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 1261 | INHERITED::onSetData(pdman, processor); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 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, |
| 1297 | const SkTwoPointConicalGradient& shader, |
| 1298 | SkShader::TileMode tm, |
| 1299 | const SkMatrix* localMatrix) { |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1300 | SkMatrix matrix; |
| 1301 | if (!shader.getLocalMatrix().invert(&matrix)) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 1302 | return nullptr; |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1303 | } |
commit-bot@chromium.org | 96fb748 | 2014-05-09 20:28:11 +0000 | [diff] [blame] | 1304 | if (localMatrix) { |
| 1305 | SkMatrix inv; |
| 1306 | if (!localMatrix->invert(&inv)) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 1307 | return nullptr; |
commit-bot@chromium.org | 96fb748 | 2014-05-09 20:28:11 +0000 | [diff] [blame] | 1308 | } |
| 1309 | matrix.postConcat(inv); |
| 1310 | } |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1311 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1312 | if (shader.getStartRadius() < kErrorTol) { |
| 1313 | SkScalar focalX; |
| 1314 | ConicalType type = set_matrix_focal_conical(shader, &matrix, &focalX); |
| 1315 | if (type == kInside_ConicalType) { |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 1316 | return FocalInside2PtConicalEffect::Create(ctx, shader, matrix, tm, focalX); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1317 | } else if(type == kEdge_ConicalType) { |
| 1318 | set_matrix_edge_conical(shader, &matrix); |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 1319 | return Edge2PtConicalEffect::Create(ctx, shader, matrix, tm); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1320 | } else { |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 1321 | return FocalOutside2PtConicalEffect::Create(ctx, shader, matrix, tm, focalX); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1322 | } |
| 1323 | } |
| 1324 | |
| 1325 | CircleConicalInfo info; |
| 1326 | ConicalType type = set_matrix_circle_conical(shader, &matrix, &info); |
| 1327 | |
| 1328 | if (type == kInside_ConicalType) { |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 1329 | return CircleInside2PtConicalEffect::Create(ctx, shader, matrix, tm, info); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1330 | } else if (type == kEdge_ConicalType) { |
| 1331 | set_matrix_edge_conical(shader, &matrix); |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 1332 | return Edge2PtConicalEffect::Create(ctx, shader, matrix, tm); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1333 | } else { |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 1334 | return CircleOutside2PtConicalEffect::Create(ctx, shader, matrix, tm, info); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1335 | } |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1336 | } |
| 1337 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1338 | #endif |