commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 2 | /* |
| 3 | * Copyright 2014 Google Inc. |
| 4 | * |
| 5 | * Use of this source code is governed by a BSD-style license that can be |
| 6 | * found in the LICENSE file. |
| 7 | */ |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 8 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 9 | #include "SkTwoPointConicalGradient_gpu.h" |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 10 | |
| 11 | #include "SkTwoPointConicalGradient.h" |
| 12 | |
commit-bot@chromium.org | ef93d29 | 2014-04-10 15:37:52 +0000 | [diff] [blame] | 13 | #if SK_SUPPORT_GPU |
joshualitt | 8ca93e7 | 2015-07-08 06:51:43 -0700 | [diff] [blame] | 14 | #include "GrPaint.h" |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 15 | #include "gl/builders/GrGLProgramBuilder.h" |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 16 | // For brevity |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 17 | typedef GrGLProgramDataManager::UniformHandle UniformHandle; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 18 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 19 | static const SkScalar kErrorTol = 0.00001f; |
egdaniel | 8405ef9 | 2014-06-09 11:57:28 -0700 | [diff] [blame] | 20 | static const SkScalar kEdgeErrorTol = 5.f * kErrorTol; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 21 | |
| 22 | /** |
| 23 | * We have three general cases for 2pt conical gradients. First we always assume that |
| 24 | * the start radius <= end radius. Our first case (kInside_) is when the start circle |
| 25 | * is completely enclosed by the end circle. The second case (kOutside_) is the case |
| 26 | * when the start circle is either completely outside the end circle or the circles |
| 27 | * overlap. The final case (kEdge_) is when the start circle is inside the end one, |
| 28 | * but the two are just barely touching at 1 point along their edges. |
| 29 | */ |
| 30 | enum ConicalType { |
| 31 | kInside_ConicalType, |
| 32 | kOutside_ConicalType, |
| 33 | kEdge_ConicalType, |
| 34 | }; |
| 35 | |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 36 | ////////////////////////////////////////////////////////////////////////////// |
| 37 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 38 | static void set_matrix_edge_conical(const SkTwoPointConicalGradient& shader, |
| 39 | SkMatrix* invLMatrix) { |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 40 | // Inverse of the current local matrix is passed in then, |
| 41 | // translate to center1, rotate so center2 is on x axis. |
| 42 | const SkPoint& center1 = shader.getStartCenter(); |
| 43 | const SkPoint& center2 = shader.getEndCenter(); |
| 44 | |
| 45 | invLMatrix->postTranslate(-center1.fX, -center1.fY); |
| 46 | |
| 47 | SkPoint diff = center2 - center1; |
| 48 | SkScalar diffLen = diff.length(); |
| 49 | if (0 != diffLen) { |
| 50 | SkScalar invDiffLen = SkScalarInvert(diffLen); |
| 51 | SkMatrix rot; |
| 52 | rot.setSinCos(-SkScalarMul(invDiffLen, diff.fY), |
| 53 | SkScalarMul(invDiffLen, diff.fX)); |
| 54 | invLMatrix->postConcat(rot); |
| 55 | } |
| 56 | } |
| 57 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 58 | class Edge2PtConicalEffect : public GrGradientEffect { |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 59 | public: |
| 60 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 61 | static GrFragmentProcessor* Create(GrContext* ctx, |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 62 | GrProcessorDataManager* procDataManager, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 63 | const SkTwoPointConicalGradient& shader, |
| 64 | const SkMatrix& matrix, |
| 65 | SkShader::TileMode tm) { |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 66 | return SkNEW_ARGS(Edge2PtConicalEffect, (ctx, procDataManager, shader, matrix, tm)); |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 67 | } |
| 68 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 69 | virtual ~Edge2PtConicalEffect() {} |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 70 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 71 | const char* name() const override { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 72 | return "Two-Point Conical Gradient Edge Touching"; |
| 73 | } |
| 74 | |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 75 | // 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] | 76 | SkScalar center() const { return fCenterX1; } |
| 77 | SkScalar diffRadius() const { return fDiffRadius; } |
| 78 | SkScalar radius() const { return fRadius0; } |
| 79 | |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 80 | private: |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame^] | 81 | GrGLFragmentProcessor* onCreateGLInstance() const override; |
| 82 | |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame] | 83 | void onGetGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override; |
| 84 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 85 | bool onIsEqual(const GrFragmentProcessor& sBase) const override { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 86 | const Edge2PtConicalEffect& s = sBase.cast<Edge2PtConicalEffect>(); |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 87 | return (INHERITED::onIsEqual(sBase) && |
| 88 | this->fCenterX1 == s.fCenterX1 && |
| 89 | this->fRadius0 == s.fRadius0 && |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 90 | this->fDiffRadius == s.fDiffRadius); |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 91 | } |
| 92 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 93 | Edge2PtConicalEffect(GrContext* ctx, |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 94 | GrProcessorDataManager* procDataManager, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 95 | const SkTwoPointConicalGradient& shader, |
| 96 | const SkMatrix& matrix, |
| 97 | SkShader::TileMode tm) |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 98 | : INHERITED(ctx, procDataManager, shader, matrix, tm), |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 99 | fCenterX1(shader.getCenterX1()), |
| 100 | fRadius0(shader.getStartRadius()), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 101 | fDiffRadius(shader.getDiffRadius()){ |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 102 | this->initClassID<Edge2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 103 | // We should only be calling this shader if we are degenerate case with touching circles |
egdaniel | 8405ef9 | 2014-06-09 11:57:28 -0700 | [diff] [blame] | 104 | // When deciding if we are in edge case, we scaled by the end radius for cases when the |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 105 | // start radius was close to zero, otherwise we scaled by the start radius. In addition |
| 106 | // Our test for the edge case in set_matrix_circle_conical has a higher tolerance so we |
| 107 | // need the sqrt value below |
| 108 | SkASSERT(SkScalarAbs(SkScalarAbs(fDiffRadius) - fCenterX1) < |
| 109 | (fRadius0 < kErrorTol ? shader.getEndRadius() * kEdgeErrorTol : |
| 110 | fRadius0 * sqrt(kEdgeErrorTol))); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 111 | |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 112 | // We pass the linear part of the quadratic as a varying. |
| 113 | // float b = -2.0 * (fCenterX1 * x + fRadius0 * fDiffRadius * z) |
| 114 | fBTransform = this->getCoordTransform(); |
| 115 | SkMatrix& bMatrix = *fBTransform.accessMatrix(); |
| 116 | SkScalar r0dr = SkScalarMul(fRadius0, fDiffRadius); |
| 117 | bMatrix[SkMatrix::kMScaleX] = -2 * (SkScalarMul(fCenterX1, bMatrix[SkMatrix::kMScaleX]) + |
| 118 | SkScalarMul(r0dr, bMatrix[SkMatrix::kMPersp0])); |
| 119 | bMatrix[SkMatrix::kMSkewX] = -2 * (SkScalarMul(fCenterX1, bMatrix[SkMatrix::kMSkewX]) + |
| 120 | SkScalarMul(r0dr, bMatrix[SkMatrix::kMPersp1])); |
| 121 | bMatrix[SkMatrix::kMTransX] = -2 * (SkScalarMul(fCenterX1, bMatrix[SkMatrix::kMTransX]) + |
| 122 | SkScalarMul(r0dr, bMatrix[SkMatrix::kMPersp2])); |
| 123 | this->addCoordTransform(&fBTransform); |
| 124 | } |
| 125 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 126 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 127 | |
| 128 | // @{ |
| 129 | // Cache of values - these can change arbitrarily, EXCEPT |
| 130 | // we shouldn't change between degenerate and non-degenerate?! |
| 131 | |
| 132 | GrCoordTransform fBTransform; |
| 133 | SkScalar fCenterX1; |
| 134 | SkScalar fRadius0; |
| 135 | SkScalar fDiffRadius; |
| 136 | |
| 137 | // @} |
| 138 | |
| 139 | typedef GrGradientEffect INHERITED; |
| 140 | }; |
| 141 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 142 | class GLEdge2PtConicalEffect : public GrGLGradientEffect { |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 143 | public: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 144 | GLEdge2PtConicalEffect(const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 145 | virtual ~GLEdge2PtConicalEffect() { } |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 146 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 147 | virtual void emitCode(EmitArgs&) override; |
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: |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame^] | 152 | void onSetData(const GrGLProgramDataManager&, const GrProcessor&) override; |
| 153 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 154 | UniformHandle fParamUni; |
| 155 | |
| 156 | const char* fVSVaryingName; |
| 157 | const char* fFSVaryingName; |
| 158 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 159 | // @{ |
| 160 | /// Values last uploaded as uniforms |
| 161 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 162 | SkScalar fCachedRadius; |
| 163 | SkScalar fCachedDiffRadius; |
| 164 | |
| 165 | // @} |
| 166 | |
| 167 | private: |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 168 | typedef GrGLGradientEffect INHERITED; |
| 169 | |
| 170 | }; |
| 171 | |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame] | 172 | void Edge2PtConicalEffect::onGetGLProcessorKey(const GrGLSLCaps& caps, |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 173 | GrProcessorKeyBuilder* b) const { |
| 174 | GLEdge2PtConicalEffect::GenKey(*this, caps, b); |
| 175 | } |
| 176 | |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame^] | 177 | GrGLFragmentProcessor* Edge2PtConicalEffect::onCreateGLInstance() const { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 178 | return SkNEW_ARGS(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 | */ |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 186 | GrFragmentProcessor* Edge2PtConicalEffect::TestCreate(GrProcessorTestData* d) { |
| 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)); |
| 212 | SkPaint paint; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 213 | GrFragmentProcessor* fp; |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 214 | GrColor paintColor; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 215 | SkAssertResult(shader->asFragmentProcessor(d->fContext, paint, |
| 216 | GrTest::TestMatrix(d->fRandom), NULL, |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 217 | &paintColor, d->fProcDataManager, &fp)); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 218 | return fp; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 219 | } |
| 220 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 221 | GLEdge2PtConicalEffect::GLEdge2PtConicalEffect(const GrProcessor&) |
| 222 | : fVSVaryingName(NULL) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 223 | , fFSVaryingName(NULL) |
| 224 | , fCachedRadius(-SK_ScalarMax) |
| 225 | , fCachedDiffRadius(-SK_ScalarMax) {} |
| 226 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 227 | void GLEdge2PtConicalEffect::emitCode(EmitArgs& args) { |
| 228 | const Edge2PtConicalEffect& ge = args.fFp.cast<Edge2PtConicalEffect>(); |
| 229 | this->emitUniforms(args.fBuilder, ge); |
| 230 | fParamUni = args.fBuilder->addUniformArray(GrGLProgramBuilder::kFragment_Visibility, |
bsalomon | 422f56f | 2014-12-09 10:18:12 -0800 | [diff] [blame] | 231 | kFloat_GrSLType, kDefault_GrSLPrecision, |
| 232 | "Conical2FSParams", 3); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 233 | |
| 234 | SkString cName("c"); |
| 235 | SkString tName("t"); |
| 236 | SkString p0; // start radius |
| 237 | SkString p1; // start radius squared |
| 238 | SkString p2; // difference in radii (r1 - r0) |
| 239 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 240 | args.fBuilder->getUniformVariable(fParamUni).appendArrayAccess(0, &p0); |
| 241 | args.fBuilder->getUniformVariable(fParamUni).appendArrayAccess(1, &p1); |
| 242 | args.fBuilder->getUniformVariable(fParamUni).appendArrayAccess(2, &p2); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 243 | |
| 244 | // We interpolate the linear component in coords[1]. |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 245 | SkASSERT(args.fCoords[0].getType() == args.fCoords[1].getType()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 246 | const char* coords2D; |
| 247 | SkString bVar; |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 248 | GrGLFragmentBuilder* fsBuilder = args.fBuilder->getFragmentShaderBuilder(); |
| 249 | if (kVec3f_GrSLType == args.fCoords[0].getType()) { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 250 | fsBuilder->codeAppendf("\tvec3 interpolants = vec3(%s.xy / %s.z, %s.x / %s.z);\n", |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 251 | args.fCoords[0].c_str(), args.fCoords[0].c_str(), |
| 252 | args.fCoords[1].c_str(), args.fCoords[1].c_str()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 253 | coords2D = "interpolants.xy"; |
| 254 | bVar = "interpolants.z"; |
| 255 | } else { |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 256 | coords2D = args.fCoords[0].c_str(); |
| 257 | bVar.printf("%s.x", args.fCoords[1].c_str()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 258 | } |
| 259 | |
| 260 | // output will default to transparent black (we simply won't write anything |
| 261 | // else to it if invalid, instead of discarding or returning prematurely) |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 262 | fsBuilder->codeAppendf("\t%s = vec4(0.0,0.0,0.0,0.0);\n", args.fOutputColor); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 263 | |
| 264 | // c = (x^2)+(y^2) - params[1] |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 265 | fsBuilder->codeAppendf("\tfloat %s = dot(%s, %s) - %s;\n", |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 266 | cName.c_str(), coords2D, coords2D, p1.c_str()); |
| 267 | |
| 268 | // linear case: t = -c/b |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 269 | fsBuilder->codeAppendf("\tfloat %s = -(%s / %s);\n", tName.c_str(), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 270 | cName.c_str(), bVar.c_str()); |
| 271 | |
| 272 | // if r(t) > 0, then t will be the x coordinate |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 273 | fsBuilder->codeAppendf("\tif (%s * %s + %s > 0.0) {\n", tName.c_str(), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 274 | p2.c_str(), p0.c_str()); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 275 | fsBuilder->codeAppend("\t"); |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 276 | this->emitColor(args.fBuilder, ge, tName.c_str(), args.fOutputColor, args.fInputColor, |
| 277 | args.fSamplers); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 278 | fsBuilder->codeAppend("\t}\n"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 279 | } |
| 280 | |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame^] | 281 | void GLEdge2PtConicalEffect::onSetData(const GrGLProgramDataManager& pdman, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 282 | const GrProcessor& processor) { |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame^] | 283 | INHERITED::onSetData(pdman, processor); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 284 | const Edge2PtConicalEffect& data = processor.cast<Edge2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 285 | SkScalar radius0 = data.radius(); |
| 286 | SkScalar diffRadius = data.diffRadius(); |
| 287 | |
| 288 | if (fCachedRadius != radius0 || |
| 289 | fCachedDiffRadius != diffRadius) { |
| 290 | |
| 291 | float values[3] = { |
| 292 | SkScalarToFloat(radius0), |
| 293 | SkScalarToFloat(SkScalarMul(radius0, radius0)), |
| 294 | SkScalarToFloat(diffRadius) |
| 295 | }; |
| 296 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 297 | pdman.set1fv(fParamUni, 3, values); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 298 | fCachedRadius = radius0; |
| 299 | fCachedDiffRadius = diffRadius; |
| 300 | } |
| 301 | } |
| 302 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 303 | void GLEdge2PtConicalEffect::GenKey(const GrProcessor& processor, |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 304 | const GrGLSLCaps&, GrProcessorKeyBuilder* b) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 305 | b->add32(GenBaseGradientKey(processor)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 306 | } |
| 307 | |
| 308 | ////////////////////////////////////////////////////////////////////////////// |
| 309 | // Focal Conical Gradients |
| 310 | ////////////////////////////////////////////////////////////////////////////// |
| 311 | |
| 312 | static ConicalType set_matrix_focal_conical(const SkTwoPointConicalGradient& shader, |
| 313 | SkMatrix* invLMatrix, SkScalar* focalX) { |
| 314 | // Inverse of the current local matrix is passed in then, |
| 315 | // translate, scale, and rotate such that endCircle is unit circle on x-axis, |
| 316 | // and focal point is at the origin. |
| 317 | ConicalType conicalType; |
| 318 | const SkPoint& focal = shader.getStartCenter(); |
| 319 | const SkPoint& centerEnd = shader.getEndCenter(); |
| 320 | SkScalar radius = shader.getEndRadius(); |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 321 | SkScalar invRadius = 1.f / radius; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 322 | |
| 323 | SkMatrix matrix; |
| 324 | |
| 325 | matrix.setTranslate(-centerEnd.fX, -centerEnd.fY); |
| 326 | matrix.postScale(invRadius, invRadius); |
| 327 | |
| 328 | SkPoint focalTrans; |
| 329 | matrix.mapPoints(&focalTrans, &focal, 1); |
| 330 | *focalX = focalTrans.length(); |
| 331 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 332 | if (0.f != *focalX) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 333 | SkScalar invFocalX = SkScalarInvert(*focalX); |
| 334 | SkMatrix rot; |
| 335 | rot.setSinCos(-SkScalarMul(invFocalX, focalTrans.fY), |
| 336 | SkScalarMul(invFocalX, focalTrans.fX)); |
| 337 | matrix.postConcat(rot); |
| 338 | } |
| 339 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 340 | matrix.postTranslate(-(*focalX), 0.f); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 341 | |
| 342 | // If the focal point is touching the edge of the circle it will |
| 343 | // cause a degenerate case that must be handled separately |
egdaniel | 8405ef9 | 2014-06-09 11:57:28 -0700 | [diff] [blame] | 344 | // kEdgeErrorTol = 5 * kErrorTol was picked after manual testing the |
| 345 | // stability trade off versus the linear approx used in the Edge Shader |
| 346 | if (SkScalarAbs(1.f - (*focalX)) < kEdgeErrorTol) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 347 | return kEdge_ConicalType; |
| 348 | } |
| 349 | |
| 350 | // Scale factor 1 / (1 - focalX * focalX) |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 351 | SkScalar oneMinusF2 = 1.f - SkScalarMul(*focalX, *focalX); |
reed | 80ea19c | 2015-05-12 10:37:34 -0700 | [diff] [blame] | 352 | SkScalar s = SkScalarInvert(oneMinusF2); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 353 | |
| 354 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 355 | if (s >= 0.f) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 356 | conicalType = kInside_ConicalType; |
| 357 | matrix.postScale(s, s * SkScalarSqrt(oneMinusF2)); |
| 358 | } else { |
| 359 | conicalType = kOutside_ConicalType; |
| 360 | matrix.postScale(s, s); |
| 361 | } |
| 362 | |
| 363 | invLMatrix->postConcat(matrix); |
| 364 | |
| 365 | return conicalType; |
| 366 | } |
| 367 | |
| 368 | ////////////////////////////////////////////////////////////////////////////// |
| 369 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 370 | class FocalOutside2PtConicalEffect : public GrGradientEffect { |
| 371 | public: |
| 372 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 373 | static GrFragmentProcessor* Create(GrContext* ctx, |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 374 | GrProcessorDataManager* procDataManager, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 375 | const SkTwoPointConicalGradient& shader, |
| 376 | const SkMatrix& matrix, |
| 377 | SkShader::TileMode tm, |
| 378 | SkScalar focalX) { |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 379 | return SkNEW_ARGS(FocalOutside2PtConicalEffect, (ctx, procDataManager, shader, matrix, tm, |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 380 | 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: |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame^] | 393 | GrGLFragmentProcessor* onCreateGLInstance() const override; |
| 394 | |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame] | 395 | void onGetGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override; |
| 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, |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 405 | GrProcessorDataManager* procDataManager, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 406 | const SkTwoPointConicalGradient& shader, |
| 407 | const SkMatrix& matrix, |
| 408 | SkShader::TileMode tm, |
| 409 | SkScalar focalX) |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 410 | : INHERITED(ctx, procDataManager, shader, matrix, tm) |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 411 | , fFocalX(focalX) |
| 412 | , fIsFlipped(shader.isFlippedGrad()) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 413 | this->initClassID<FocalOutside2PtConicalEffect>(); |
| 414 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 415 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 416 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 417 | |
| 418 | SkScalar fFocalX; |
| 419 | bool fIsFlipped; |
| 420 | |
| 421 | typedef GrGradientEffect INHERITED; |
| 422 | }; |
| 423 | |
| 424 | class GLFocalOutside2PtConicalEffect : public GrGLGradientEffect { |
| 425 | public: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 426 | GLFocalOutside2PtConicalEffect(const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 427 | virtual ~GLFocalOutside2PtConicalEffect() { } |
| 428 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 429 | virtual void emitCode(EmitArgs&) override; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 430 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 431 | static void GenKey(const GrProcessor&, const GrGLSLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 432 | |
| 433 | protected: |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame^] | 434 | void onSetData(const GrGLProgramDataManager&, const GrProcessor&) override; |
| 435 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 436 | UniformHandle fParamUni; |
| 437 | |
| 438 | const char* fVSVaryingName; |
| 439 | const char* fFSVaryingName; |
| 440 | |
| 441 | bool fIsFlipped; |
| 442 | |
| 443 | // @{ |
| 444 | /// Values last uploaded as uniforms |
| 445 | |
| 446 | SkScalar fCachedFocal; |
| 447 | |
| 448 | // @} |
| 449 | |
| 450 | private: |
| 451 | typedef GrGLGradientEffect INHERITED; |
| 452 | |
| 453 | }; |
| 454 | |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame] | 455 | void FocalOutside2PtConicalEffect::onGetGLProcessorKey(const GrGLSLCaps& caps, |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 456 | GrProcessorKeyBuilder* b) const { |
| 457 | GLFocalOutside2PtConicalEffect::GenKey(*this, caps, b); |
| 458 | } |
| 459 | |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame^] | 460 | GrGLFragmentProcessor* FocalOutside2PtConicalEffect::onCreateGLInstance() const { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 461 | return SkNEW_ARGS(GLFocalOutside2PtConicalEffect, (*this)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 462 | } |
| 463 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 464 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(FocalOutside2PtConicalEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 465 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 466 | /* |
| 467 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 468 | */ |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 469 | GrFragmentProcessor* FocalOutside2PtConicalEffect::TestCreate(GrProcessorTestData* d) { |
| 470 | SkPoint center1 = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()}; |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 471 | SkScalar radius1 = 0.f; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 472 | SkPoint center2; |
| 473 | SkScalar radius2; |
| 474 | do { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 475 | center2.set(d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 476 | // 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] | 477 | } while (center1 == center2); |
| 478 | SkPoint diff = center2 - center1; |
| 479 | SkScalar diffLen = diff.length(); |
| 480 | // Below makes sure that the focal point is not contained within circle two |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 481 | radius2 = d->fRandom->nextRangeF(0.f, diffLen); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 482 | |
| 483 | SkColor colors[kMaxRandomGradientColors]; |
| 484 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 485 | SkScalar* stops = stopsArray; |
| 486 | SkShader::TileMode tm; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 487 | int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tm); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 488 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 489 | center2, radius2, |
| 490 | colors, stops, colorCount, |
| 491 | tm)); |
| 492 | SkPaint paint; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 493 | GrFragmentProcessor* effect; |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 494 | GrColor paintColor; |
joshualitt | 8ca93e7 | 2015-07-08 06:51:43 -0700 | [diff] [blame] | 495 | GrPaint grPaint; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 496 | SkAssertResult(shader->asFragmentProcessor(d->fContext, paint, |
| 497 | GrTest::TestMatrix(d->fRandom), NULL, |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 498 | &paintColor, d->fProcDataManager, |
joshualitt | 8ca93e7 | 2015-07-08 06:51:43 -0700 | [diff] [blame] | 499 | &effect)); |
dandov | 9de5b51 | 2014-06-10 14:38:28 -0700 | [diff] [blame] | 500 | return effect; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 501 | } |
| 502 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 503 | GLFocalOutside2PtConicalEffect::GLFocalOutside2PtConicalEffect(const GrProcessor& processor) |
| 504 | : fVSVaryingName(NULL) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 505 | , fFSVaryingName(NULL) |
| 506 | , fCachedFocal(SK_ScalarMax) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 507 | const FocalOutside2PtConicalEffect& data = processor.cast<FocalOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 508 | fIsFlipped = data.isFlipped(); |
| 509 | } |
| 510 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 511 | void GLFocalOutside2PtConicalEffect::emitCode(EmitArgs& args) { |
| 512 | const FocalOutside2PtConicalEffect& ge = args.fFp.cast<FocalOutside2PtConicalEffect>(); |
| 513 | this->emitUniforms(args.fBuilder, ge); |
| 514 | fParamUni = args.fBuilder->addUniformArray(GrGLProgramBuilder::kFragment_Visibility, |
bsalomon | 422f56f | 2014-12-09 10:18:12 -0800 | [diff] [blame] | 515 | kFloat_GrSLType, kDefault_GrSLPrecision, |
| 516 | "Conical2FSParams", 2); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 517 | SkString tName("t"); |
| 518 | SkString p0; // focalX |
| 519 | SkString p1; // 1 - focalX * focalX |
| 520 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 521 | args.fBuilder->getUniformVariable(fParamUni).appendArrayAccess(0, &p0); |
| 522 | args.fBuilder->getUniformVariable(fParamUni).appendArrayAccess(1, &p1); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 523 | |
| 524 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 525 | GrGLFragmentBuilder* fsBuilder = args.fBuilder->getFragmentShaderBuilder(); |
| 526 | SkString coords2DString = fsBuilder->ensureFSCoords2D(args.fCoords, 0); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 527 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 528 | |
| 529 | // t = p.x * focal.x +/- sqrt(p.x^2 + (1 - focal.x^2) * p.y^2) |
| 530 | |
| 531 | // output will default to transparent black (we simply won't write anything |
| 532 | // else to it if invalid, instead of discarding or returning prematurely) |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 533 | fsBuilder->codeAppendf("\t%s = vec4(0.0,0.0,0.0,0.0);\n", args.fOutputColor); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 534 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 535 | fsBuilder->codeAppendf("\tfloat xs = %s.x * %s.x;\n", coords2D, coords2D); |
| 536 | fsBuilder->codeAppendf("\tfloat ys = %s.y * %s.y;\n", coords2D, coords2D); |
| 537 | fsBuilder->codeAppendf("\tfloat d = xs + %s * ys;\n", p1.c_str()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 538 | |
| 539 | // Must check to see if we flipped the circle order (to make sure start radius < end radius) |
| 540 | // If so we must also flip sign on sqrt |
| 541 | if (!fIsFlipped) { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 542 | fsBuilder->codeAppendf("\tfloat %s = %s.x * %s + sqrt(d);\n", tName.c_str(), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 543 | coords2D, p0.c_str()); |
| 544 | } else { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 545 | fsBuilder->codeAppendf("\tfloat %s = %s.x * %s - sqrt(d);\n", tName.c_str(), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 546 | coords2D, p0.c_str()); |
| 547 | } |
| 548 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 549 | fsBuilder->codeAppendf("\tif (%s >= 0.0 && d >= 0.0) {\n", tName.c_str()); |
| 550 | fsBuilder->codeAppend("\t\t"); |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 551 | this->emitColor(args.fBuilder, ge, tName.c_str(), args.fOutputColor, args.fInputColor, |
| 552 | args.fSamplers); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 553 | fsBuilder->codeAppend("\t}\n"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 554 | } |
| 555 | |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame^] | 556 | void GLFocalOutside2PtConicalEffect::onSetData(const GrGLProgramDataManager& pdman, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 557 | const GrProcessor& processor) { |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame^] | 558 | INHERITED::onSetData(pdman, processor); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 559 | const FocalOutside2PtConicalEffect& data = processor.cast<FocalOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 560 | SkASSERT(data.isFlipped() == fIsFlipped); |
| 561 | SkScalar focal = data.focal(); |
| 562 | |
| 563 | if (fCachedFocal != focal) { |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 564 | SkScalar oneMinus2F = 1.f - SkScalarMul(focal, focal); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 565 | |
| 566 | float values[2] = { |
| 567 | SkScalarToFloat(focal), |
| 568 | SkScalarToFloat(oneMinus2F), |
| 569 | }; |
| 570 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 571 | pdman.set1fv(fParamUni, 2, values); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 572 | fCachedFocal = focal; |
| 573 | } |
| 574 | } |
| 575 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 576 | void GLFocalOutside2PtConicalEffect::GenKey(const GrProcessor& processor, |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 577 | const GrGLSLCaps&, GrProcessorKeyBuilder* b) { |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 578 | uint32_t* key = b->add32n(2); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 579 | key[0] = GenBaseGradientKey(processor); |
| 580 | key[1] = processor.cast<FocalOutside2PtConicalEffect>().isFlipped(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 581 | } |
| 582 | |
| 583 | ////////////////////////////////////////////////////////////////////////////// |
| 584 | |
| 585 | class GLFocalInside2PtConicalEffect; |
| 586 | |
| 587 | class FocalInside2PtConicalEffect : public GrGradientEffect { |
| 588 | public: |
| 589 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 590 | static GrFragmentProcessor* Create(GrContext* ctx, |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 591 | GrProcessorDataManager* procDataManager, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 592 | const SkTwoPointConicalGradient& shader, |
| 593 | const SkMatrix& matrix, |
| 594 | SkShader::TileMode tm, |
| 595 | SkScalar focalX) { |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 596 | return SkNEW_ARGS(FocalInside2PtConicalEffect, (ctx, procDataManager, shader, matrix, tm, |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 597 | focalX)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 598 | } |
| 599 | |
| 600 | virtual ~FocalInside2PtConicalEffect() {} |
| 601 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 602 | const char* name() const override { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 603 | return "Two-Point Conical Gradient Focal Inside"; |
| 604 | } |
| 605 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 606 | SkScalar focal() const { return fFocalX; } |
| 607 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 608 | typedef GLFocalInside2PtConicalEffect GLProcessor; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 609 | |
| 610 | private: |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame^] | 611 | GrGLFragmentProcessor* onCreateGLInstance() const override; |
| 612 | |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame] | 613 | void onGetGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override; |
| 614 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 615 | bool onIsEqual(const GrFragmentProcessor& sBase) const override { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 616 | const FocalInside2PtConicalEffect& s = sBase.cast<FocalInside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 617 | return (INHERITED::onIsEqual(sBase) && |
| 618 | this->fFocalX == s.fFocalX); |
| 619 | } |
| 620 | |
| 621 | FocalInside2PtConicalEffect(GrContext* ctx, |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 622 | GrProcessorDataManager* procDataManager, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 623 | const SkTwoPointConicalGradient& shader, |
| 624 | const SkMatrix& matrix, |
| 625 | SkShader::TileMode tm, |
| 626 | SkScalar focalX) |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 627 | : INHERITED(ctx, procDataManager, shader, matrix, tm), fFocalX(focalX) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 628 | this->initClassID<FocalInside2PtConicalEffect>(); |
| 629 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 630 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 631 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 632 | |
| 633 | SkScalar fFocalX; |
| 634 | |
| 635 | typedef GrGradientEffect INHERITED; |
| 636 | }; |
| 637 | |
| 638 | class GLFocalInside2PtConicalEffect : public GrGLGradientEffect { |
| 639 | public: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 640 | GLFocalInside2PtConicalEffect(const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 641 | virtual ~GLFocalInside2PtConicalEffect() {} |
| 642 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 643 | virtual void emitCode(EmitArgs&) override; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 644 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 645 | static void GenKey(const GrProcessor&, const GrGLSLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 646 | |
| 647 | protected: |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame^] | 648 | void onSetData(const GrGLProgramDataManager&, const GrProcessor&) override; |
| 649 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 650 | UniformHandle fFocalUni; |
| 651 | |
| 652 | const char* fVSVaryingName; |
| 653 | const char* fFSVaryingName; |
| 654 | |
| 655 | // @{ |
| 656 | /// Values last uploaded as uniforms |
| 657 | |
| 658 | SkScalar fCachedFocal; |
| 659 | |
| 660 | // @} |
| 661 | |
| 662 | private: |
| 663 | typedef GrGLGradientEffect INHERITED; |
| 664 | |
| 665 | }; |
| 666 | |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame] | 667 | void FocalInside2PtConicalEffect::onGetGLProcessorKey(const GrGLSLCaps& caps, |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 668 | GrProcessorKeyBuilder* b) const { |
| 669 | GLFocalInside2PtConicalEffect::GenKey(*this, caps, b); |
| 670 | } |
| 671 | |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame^] | 672 | GrGLFragmentProcessor* FocalInside2PtConicalEffect::onCreateGLInstance() const { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 673 | return SkNEW_ARGS(GLFocalInside2PtConicalEffect, (*this)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 674 | } |
| 675 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 676 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(FocalInside2PtConicalEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 677 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 678 | /* |
| 679 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 680 | */ |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 681 | GrFragmentProcessor* FocalInside2PtConicalEffect::TestCreate(GrProcessorTestData* d) { |
| 682 | SkPoint center1 = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()}; |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 683 | SkScalar radius1 = 0.f; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 684 | SkPoint center2; |
| 685 | SkScalar radius2; |
| 686 | do { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 687 | center2.set(d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 688 | // Below makes sure radius2 is larger enouch such that the focal point |
| 689 | // is inside the end circle |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 690 | SkScalar increase = d->fRandom->nextUScalar1(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 691 | SkPoint diff = center2 - center1; |
| 692 | SkScalar diffLen = diff.length(); |
| 693 | radius2 = diffLen + increase; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 694 | // If the circles are identical the factory will give us an empty shader. |
| 695 | } while (radius1 == radius2 && center1 == center2); |
| 696 | |
| 697 | SkColor colors[kMaxRandomGradientColors]; |
| 698 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 699 | SkScalar* stops = stopsArray; |
| 700 | SkShader::TileMode tm; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 701 | int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tm); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 702 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 703 | center2, radius2, |
| 704 | colors, stops, colorCount, |
| 705 | tm)); |
| 706 | SkPaint paint; |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 707 | GrColor paintColor; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 708 | GrFragmentProcessor* fp; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 709 | SkAssertResult(shader->asFragmentProcessor(d->fContext, paint, |
| 710 | GrTest::TestMatrix(d->fRandom), NULL, |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 711 | &paintColor, d->fProcDataManager, &fp)); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 712 | return fp; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 713 | } |
| 714 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 715 | GLFocalInside2PtConicalEffect::GLFocalInside2PtConicalEffect(const GrProcessor&) |
| 716 | : fVSVaryingName(NULL) |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 717 | , fFSVaryingName(NULL) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 718 | , fCachedFocal(SK_ScalarMax) {} |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 719 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 720 | void GLFocalInside2PtConicalEffect::emitCode(EmitArgs& args) { |
| 721 | const FocalInside2PtConicalEffect& ge = args.fFp.cast<FocalInside2PtConicalEffect>(); |
| 722 | this->emitUniforms(args.fBuilder, ge); |
| 723 | fFocalUni = args.fBuilder->addUniform(GrGLProgramBuilder::kFragment_Visibility, |
bsalomon | 422f56f | 2014-12-09 10:18:12 -0800 | [diff] [blame] | 724 | kFloat_GrSLType, kDefault_GrSLPrecision, |
| 725 | "Conical2FSParams"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 726 | SkString tName("t"); |
| 727 | |
| 728 | // this is the distance along x-axis from the end center to focal point in |
| 729 | // transformed coordinates |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 730 | GrGLShaderVar focal = args.fBuilder->getUniformVariable(fFocalUni); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 731 | |
| 732 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 733 | GrGLFragmentBuilder* fsBuilder = args.fBuilder->getFragmentShaderBuilder(); |
| 734 | SkString coords2DString = fsBuilder->ensureFSCoords2D(args.fCoords, 0); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 735 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 736 | |
| 737 | // t = p.x * focalX + length(p) |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 738 | fsBuilder->codeAppendf("\tfloat %s = %s.x * %s + length(%s);\n", tName.c_str(), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 739 | coords2D, focal.c_str(), coords2D); |
| 740 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 741 | this->emitColor(args.fBuilder, ge, tName.c_str(), args.fOutputColor, args.fInputColor, |
| 742 | args.fSamplers); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 743 | } |
| 744 | |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame^] | 745 | void GLFocalInside2PtConicalEffect::onSetData(const GrGLProgramDataManager& pdman, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 746 | const GrProcessor& processor) { |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame^] | 747 | INHERITED::onSetData(pdman, processor); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 748 | const FocalInside2PtConicalEffect& data = processor.cast<FocalInside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 749 | SkScalar focal = data.focal(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 750 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 751 | if (fCachedFocal != focal) { |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 752 | pdman.set1f(fFocalUni, SkScalarToFloat(focal)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 753 | fCachedFocal = focal; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 754 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 755 | } |
| 756 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 757 | void GLFocalInside2PtConicalEffect::GenKey(const GrProcessor& processor, |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 758 | const GrGLSLCaps&, GrProcessorKeyBuilder* b) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 759 | b->add32(GenBaseGradientKey(processor)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 760 | } |
| 761 | |
| 762 | ////////////////////////////////////////////////////////////////////////////// |
| 763 | // Circle Conical Gradients |
| 764 | ////////////////////////////////////////////////////////////////////////////// |
| 765 | |
| 766 | struct CircleConicalInfo { |
| 767 | SkPoint fCenterEnd; |
| 768 | SkScalar fA; |
| 769 | SkScalar fB; |
| 770 | SkScalar fC; |
| 771 | }; |
| 772 | |
| 773 | // Returns focal distance along x-axis in transformed coords |
| 774 | static ConicalType set_matrix_circle_conical(const SkTwoPointConicalGradient& shader, |
| 775 | SkMatrix* invLMatrix, CircleConicalInfo* info) { |
| 776 | // Inverse of the current local matrix is passed in then, |
| 777 | // translate and scale such that start circle is on the origin and has radius 1 |
| 778 | const SkPoint& centerStart = shader.getStartCenter(); |
| 779 | const SkPoint& centerEnd = shader.getEndCenter(); |
| 780 | SkScalar radiusStart = shader.getStartRadius(); |
| 781 | SkScalar radiusEnd = shader.getEndRadius(); |
| 782 | |
| 783 | SkMatrix matrix; |
| 784 | |
| 785 | matrix.setTranslate(-centerStart.fX, -centerStart.fY); |
| 786 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 787 | SkScalar invStartRad = 1.f / radiusStart; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 788 | matrix.postScale(invStartRad, invStartRad); |
| 789 | |
| 790 | radiusEnd /= radiusStart; |
| 791 | |
| 792 | SkPoint centerEndTrans; |
| 793 | matrix.mapPoints(¢erEndTrans, ¢erEnd, 1); |
| 794 | |
| 795 | SkScalar A = centerEndTrans.fX * centerEndTrans.fX + centerEndTrans.fY * centerEndTrans.fY |
| 796 | - radiusEnd * radiusEnd + 2 * radiusEnd - 1; |
| 797 | |
| 798 | // Check to see if start circle is inside end circle with edges touching. |
| 799 | // 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] | 800 | // to the edge shader. kEdgeErrorTol = 5 * kErrorTol was picked after manual testing |
| 801 | // so that C = 1 / A is stable, and the linear approximation used in the Edge shader is |
| 802 | // still accurate. |
| 803 | if (SkScalarAbs(A) < kEdgeErrorTol) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 804 | return kEdge_ConicalType; |
| 805 | } |
| 806 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 807 | SkScalar C = 1.f / A; |
| 808 | SkScalar B = (radiusEnd - 1.f) * C; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 809 | |
| 810 | matrix.postScale(C, C); |
| 811 | |
| 812 | invLMatrix->postConcat(matrix); |
| 813 | |
| 814 | info->fCenterEnd = centerEndTrans; |
| 815 | info->fA = A; |
| 816 | info->fB = B; |
| 817 | info->fC = C; |
| 818 | |
| 819 | // 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] | 820 | if (A < 0.f) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 821 | return kInside_ConicalType; |
| 822 | } |
| 823 | return kOutside_ConicalType; |
| 824 | } |
| 825 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 826 | class CircleInside2PtConicalEffect : public GrGradientEffect { |
| 827 | public: |
| 828 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 829 | static GrFragmentProcessor* Create(GrContext* ctx, |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 830 | GrProcessorDataManager* procDataManager, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 831 | const SkTwoPointConicalGradient& shader, |
| 832 | const SkMatrix& matrix, |
| 833 | SkShader::TileMode tm, |
| 834 | const CircleConicalInfo& info) { |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 835 | return SkNEW_ARGS(CircleInside2PtConicalEffect, (ctx, procDataManager, shader, matrix, tm, |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 836 | info)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 837 | } |
| 838 | |
| 839 | virtual ~CircleInside2PtConicalEffect() {} |
| 840 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 841 | const char* name() const override { return "Two-Point Conical Gradient Inside"; } |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 842 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 843 | SkScalar centerX() const { return fInfo.fCenterEnd.fX; } |
| 844 | SkScalar centerY() const { return fInfo.fCenterEnd.fY; } |
| 845 | SkScalar A() const { return fInfo.fA; } |
| 846 | SkScalar B() const { return fInfo.fB; } |
| 847 | SkScalar C() const { return fInfo.fC; } |
| 848 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 849 | private: |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame^] | 850 | GrGLFragmentProcessor* onCreateGLInstance() const override; |
| 851 | |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame] | 852 | virtual void onGetGLProcessorKey(const GrGLSLCaps& caps, |
| 853 | GrProcessorKeyBuilder* b) const override; |
| 854 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 855 | bool onIsEqual(const GrFragmentProcessor& sBase) const override { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 856 | const CircleInside2PtConicalEffect& s = sBase.cast<CircleInside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 857 | return (INHERITED::onIsEqual(sBase) && |
| 858 | this->fInfo.fCenterEnd == s.fInfo.fCenterEnd && |
| 859 | this->fInfo.fA == s.fInfo.fA && |
| 860 | this->fInfo.fB == s.fInfo.fB && |
| 861 | this->fInfo.fC == s.fInfo.fC); |
| 862 | } |
| 863 | |
| 864 | CircleInside2PtConicalEffect(GrContext* ctx, |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 865 | GrProcessorDataManager* procDataManager, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 866 | const SkTwoPointConicalGradient& shader, |
| 867 | const SkMatrix& matrix, |
| 868 | SkShader::TileMode tm, |
| 869 | const CircleConicalInfo& info) |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 870 | : INHERITED(ctx, procDataManager, shader, matrix, tm), fInfo(info) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 871 | this->initClassID<CircleInside2PtConicalEffect>(); |
| 872 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 873 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 874 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 875 | |
| 876 | const CircleConicalInfo fInfo; |
| 877 | |
| 878 | typedef GrGradientEffect INHERITED; |
| 879 | }; |
| 880 | |
| 881 | class GLCircleInside2PtConicalEffect : public GrGLGradientEffect { |
| 882 | public: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 883 | GLCircleInside2PtConicalEffect(const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 884 | virtual ~GLCircleInside2PtConicalEffect() {} |
| 885 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 886 | virtual void emitCode(EmitArgs&) override; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 887 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 888 | static void GenKey(const GrProcessor&, const GrGLSLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 889 | |
| 890 | protected: |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame^] | 891 | void onSetData(const GrGLProgramDataManager&, const GrProcessor&) override; |
| 892 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 893 | UniformHandle fCenterUni; |
| 894 | UniformHandle fParamUni; |
| 895 | |
| 896 | const char* fVSVaryingName; |
| 897 | const char* fFSVaryingName; |
| 898 | |
| 899 | // @{ |
| 900 | /// Values last uploaded as uniforms |
| 901 | |
| 902 | SkScalar fCachedCenterX; |
| 903 | SkScalar fCachedCenterY; |
| 904 | SkScalar fCachedA; |
| 905 | SkScalar fCachedB; |
| 906 | SkScalar fCachedC; |
| 907 | |
| 908 | // @} |
| 909 | |
| 910 | private: |
| 911 | typedef GrGLGradientEffect INHERITED; |
| 912 | |
| 913 | }; |
| 914 | |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame] | 915 | void CircleInside2PtConicalEffect::onGetGLProcessorKey(const GrGLSLCaps& caps, |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 916 | GrProcessorKeyBuilder* b) const { |
| 917 | GLCircleInside2PtConicalEffect::GenKey(*this, caps, b); |
| 918 | } |
| 919 | |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame^] | 920 | GrGLFragmentProcessor* CircleInside2PtConicalEffect::onCreateGLInstance() const { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 921 | return SkNEW_ARGS(GLCircleInside2PtConicalEffect, (*this)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 922 | } |
| 923 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 924 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(CircleInside2PtConicalEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 925 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 926 | /* |
| 927 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 928 | */ |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 929 | GrFragmentProcessor* |
| 930 | CircleInside2PtConicalEffect::TestCreate(GrProcessorTestData* d) { |
| 931 | SkPoint center1 = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()}; |
| 932 | 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] | 933 | SkPoint center2; |
| 934 | SkScalar radius2; |
| 935 | do { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 936 | center2.set(d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 937 | // Below makes sure that circle one is contained within circle two |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 938 | SkScalar increase = d->fRandom->nextUScalar1(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 939 | SkPoint diff = center2 - center1; |
| 940 | SkScalar diffLen = diff.length(); |
| 941 | radius2 = radius1 + diffLen + increase; |
| 942 | // If the circles are identical the factory will give us an empty shader. |
| 943 | } while (radius1 == radius2 && center1 == center2); |
| 944 | |
| 945 | SkColor colors[kMaxRandomGradientColors]; |
| 946 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 947 | SkScalar* stops = stopsArray; |
| 948 | SkShader::TileMode tm; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 949 | int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tm); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 950 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 951 | center2, radius2, |
| 952 | colors, stops, colorCount, |
| 953 | tm)); |
| 954 | SkPaint paint; |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 955 | GrColor paintColor; |
joshualitt | 8ca93e7 | 2015-07-08 06:51:43 -0700 | [diff] [blame] | 956 | GrFragmentProcessor* fp; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 957 | SkAssertResult(shader->asFragmentProcessor(d->fContext, paint, |
| 958 | GrTest::TestMatrix(d->fRandom), NULL, |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 959 | &paintColor, d->fProcDataManager, &fp)); |
joshualitt | 8ca93e7 | 2015-07-08 06:51:43 -0700 | [diff] [blame] | 960 | return fp; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 961 | } |
| 962 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 963 | GLCircleInside2PtConicalEffect::GLCircleInside2PtConicalEffect(const GrProcessor& processor) |
| 964 | : fVSVaryingName(NULL) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 965 | , fFSVaryingName(NULL) |
| 966 | , fCachedCenterX(SK_ScalarMax) |
| 967 | , fCachedCenterY(SK_ScalarMax) |
| 968 | , fCachedA(SK_ScalarMax) |
| 969 | , fCachedB(SK_ScalarMax) |
| 970 | , fCachedC(SK_ScalarMax) {} |
| 971 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 972 | void GLCircleInside2PtConicalEffect::emitCode(EmitArgs& args) { |
| 973 | const CircleInside2PtConicalEffect& ge = args.fFp.cast<CircleInside2PtConicalEffect>(); |
| 974 | this->emitUniforms(args.fBuilder, ge); |
| 975 | fCenterUni = args.fBuilder->addUniform(GrGLProgramBuilder::kFragment_Visibility, |
bsalomon | 422f56f | 2014-12-09 10:18:12 -0800 | [diff] [blame] | 976 | kVec2f_GrSLType, kDefault_GrSLPrecision, |
| 977 | "Conical2FSCenter"); |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 978 | fParamUni = args.fBuilder->addUniform(GrGLProgramBuilder::kFragment_Visibility, |
bsalomon | 422f56f | 2014-12-09 10:18:12 -0800 | [diff] [blame] | 979 | kVec3f_GrSLType, kDefault_GrSLPrecision, |
| 980 | "Conical2FSParams"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 981 | SkString tName("t"); |
| 982 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 983 | GrGLShaderVar center = args.fBuilder->getUniformVariable(fCenterUni); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 984 | // params.x = A |
| 985 | // params.y = B |
| 986 | // params.z = C |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 987 | GrGLShaderVar params = args.fBuilder->getUniformVariable(fParamUni); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 988 | |
| 989 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 990 | GrGLFragmentBuilder* fsBuilder = args.fBuilder->getFragmentShaderBuilder(); |
| 991 | SkString coords2DString = fsBuilder->ensureFSCoords2D(args.fCoords, 0); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 992 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 993 | |
| 994 | // p = coords2D |
| 995 | // e = center end |
| 996 | // r = radius end |
| 997 | // A = dot(e, e) - r^2 + 2 * r - 1 |
| 998 | // B = (r -1) / A |
| 999 | // C = 1 / A |
| 1000 | // d = dot(e, p) + B |
| 1001 | // t = d +/- sqrt(d^2 - A * dot(p, p) + C) |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1002 | fsBuilder->codeAppendf("\tfloat pDotp = dot(%s, %s);\n", coords2D, coords2D); |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 1003 | fsBuilder->codeAppendf("\tfloat d = dot(%s, %s) + %s.y;\n", coords2D, center.c_str(), |
| 1004 | params.c_str()); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1005 | fsBuilder->codeAppendf("\tfloat %s = d + sqrt(d * d - %s.x * pDotp + %s.z);\n", |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1006 | tName.c_str(), params.c_str(), params.c_str()); |
| 1007 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 1008 | this->emitColor(args.fBuilder, ge, tName.c_str(), args.fOutputColor, args.fInputColor, |
| 1009 | args.fSamplers); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1010 | } |
| 1011 | |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame^] | 1012 | void GLCircleInside2PtConicalEffect::onSetData(const GrGLProgramDataManager& pdman, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1013 | const GrProcessor& processor) { |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame^] | 1014 | INHERITED::onSetData(pdman, processor); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1015 | const CircleInside2PtConicalEffect& data = processor.cast<CircleInside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1016 | SkScalar centerX = data.centerX(); |
| 1017 | SkScalar centerY = data.centerY(); |
| 1018 | SkScalar A = data.A(); |
| 1019 | SkScalar B = data.B(); |
| 1020 | SkScalar C = data.C(); |
| 1021 | |
| 1022 | if (fCachedCenterX != centerX || fCachedCenterY != centerY || |
| 1023 | fCachedA != A || fCachedB != B || fCachedC != C) { |
| 1024 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 1025 | pdman.set2f(fCenterUni, SkScalarToFloat(centerX), SkScalarToFloat(centerY)); |
| 1026 | pdman.set3f(fParamUni, SkScalarToFloat(A), SkScalarToFloat(B), SkScalarToFloat(C)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1027 | |
| 1028 | fCachedCenterX = centerX; |
| 1029 | fCachedCenterY = centerY; |
| 1030 | fCachedA = A; |
| 1031 | fCachedB = B; |
| 1032 | fCachedC = C; |
| 1033 | } |
| 1034 | } |
| 1035 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1036 | void GLCircleInside2PtConicalEffect::GenKey(const GrProcessor& processor, |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 1037 | const GrGLSLCaps&, GrProcessorKeyBuilder* b) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1038 | b->add32(GenBaseGradientKey(processor)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1039 | } |
| 1040 | |
| 1041 | ////////////////////////////////////////////////////////////////////////////// |
| 1042 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1043 | class CircleOutside2PtConicalEffect : public GrGradientEffect { |
| 1044 | public: |
| 1045 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1046 | static GrFragmentProcessor* Create(GrContext* ctx, |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 1047 | GrProcessorDataManager* procDataManager, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1048 | const SkTwoPointConicalGradient& shader, |
| 1049 | const SkMatrix& matrix, |
| 1050 | SkShader::TileMode tm, |
| 1051 | const CircleConicalInfo& info) { |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 1052 | return SkNEW_ARGS(CircleOutside2PtConicalEffect, (ctx, procDataManager, shader, matrix, |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 1053 | tm, info)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1054 | } |
| 1055 | |
| 1056 | virtual ~CircleOutside2PtConicalEffect() {} |
| 1057 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 1058 | const char* name() const override { return "Two-Point Conical Gradient Outside"; } |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 1059 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1060 | SkScalar centerX() const { return fInfo.fCenterEnd.fX; } |
| 1061 | SkScalar centerY() const { return fInfo.fCenterEnd.fY; } |
| 1062 | SkScalar A() const { return fInfo.fA; } |
| 1063 | SkScalar B() const { return fInfo.fB; } |
| 1064 | SkScalar C() const { return fInfo.fC; } |
| 1065 | SkScalar tLimit() const { return fTLimit; } |
| 1066 | bool isFlipped() const { return fIsFlipped; } |
| 1067 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1068 | private: |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame^] | 1069 | GrGLFragmentProcessor* onCreateGLInstance() const override; |
| 1070 | |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame] | 1071 | void onGetGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override; |
| 1072 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 1073 | bool onIsEqual(const GrFragmentProcessor& sBase) const override { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 1074 | const CircleOutside2PtConicalEffect& s = sBase.cast<CircleOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1075 | return (INHERITED::onIsEqual(sBase) && |
| 1076 | this->fInfo.fCenterEnd == s.fInfo.fCenterEnd && |
| 1077 | this->fInfo.fA == s.fInfo.fA && |
| 1078 | this->fInfo.fB == s.fInfo.fB && |
| 1079 | this->fInfo.fC == s.fInfo.fC && |
| 1080 | this->fTLimit == s.fTLimit && |
| 1081 | this->fIsFlipped == s.fIsFlipped); |
| 1082 | } |
| 1083 | |
| 1084 | CircleOutside2PtConicalEffect(GrContext* ctx, |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 1085 | GrProcessorDataManager* procDataManager, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1086 | const SkTwoPointConicalGradient& shader, |
| 1087 | const SkMatrix& matrix, |
| 1088 | SkShader::TileMode tm, |
| 1089 | const CircleConicalInfo& info) |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 1090 | : INHERITED(ctx, procDataManager, shader, matrix, tm), fInfo(info) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 1091 | this->initClassID<CircleOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1092 | if (shader.getStartRadius() != shader.getEndRadius()) { |
reed | 80ea19c | 2015-05-12 10:37:34 -0700 | [diff] [blame] | 1093 | fTLimit = shader.getStartRadius() / (shader.getStartRadius() - shader.getEndRadius()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1094 | } else { |
| 1095 | fTLimit = SK_ScalarMin; |
| 1096 | } |
| 1097 | |
| 1098 | fIsFlipped = shader.isFlippedGrad(); |
| 1099 | } |
| 1100 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1101 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1102 | |
| 1103 | const CircleConicalInfo fInfo; |
| 1104 | SkScalar fTLimit; |
| 1105 | bool fIsFlipped; |
| 1106 | |
| 1107 | typedef GrGradientEffect INHERITED; |
| 1108 | }; |
| 1109 | |
| 1110 | class GLCircleOutside2PtConicalEffect : public GrGLGradientEffect { |
| 1111 | public: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 1112 | GLCircleOutside2PtConicalEffect(const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1113 | virtual ~GLCircleOutside2PtConicalEffect() {} |
| 1114 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 1115 | virtual void emitCode(EmitArgs&) override; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1116 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 1117 | static void GenKey(const GrProcessor&, const GrGLSLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1118 | |
| 1119 | protected: |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame^] | 1120 | void onSetData(const GrGLProgramDataManager&, const GrProcessor&) override; |
| 1121 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1122 | UniformHandle fCenterUni; |
| 1123 | UniformHandle fParamUni; |
| 1124 | |
| 1125 | const char* fVSVaryingName; |
| 1126 | const char* fFSVaryingName; |
| 1127 | |
| 1128 | bool fIsFlipped; |
| 1129 | |
| 1130 | // @{ |
| 1131 | /// Values last uploaded as uniforms |
| 1132 | |
| 1133 | SkScalar fCachedCenterX; |
| 1134 | SkScalar fCachedCenterY; |
| 1135 | SkScalar fCachedA; |
| 1136 | SkScalar fCachedB; |
| 1137 | SkScalar fCachedC; |
| 1138 | SkScalar fCachedTLimit; |
| 1139 | |
| 1140 | // @} |
| 1141 | |
| 1142 | private: |
| 1143 | typedef GrGLGradientEffect INHERITED; |
| 1144 | |
| 1145 | }; |
| 1146 | |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame] | 1147 | void CircleOutside2PtConicalEffect::onGetGLProcessorKey(const GrGLSLCaps& caps, |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 1148 | GrProcessorKeyBuilder* b) const { |
| 1149 | GLCircleOutside2PtConicalEffect::GenKey(*this, caps, b); |
| 1150 | } |
| 1151 | |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame^] | 1152 | GrGLFragmentProcessor* CircleOutside2PtConicalEffect::onCreateGLInstance() const { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 1153 | return SkNEW_ARGS(GLCircleOutside2PtConicalEffect, (*this)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1154 | } |
| 1155 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1156 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(CircleOutside2PtConicalEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1157 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 1158 | /* |
| 1159 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 1160 | */ |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 1161 | GrFragmentProcessor* CircleOutside2PtConicalEffect::TestCreate(GrProcessorTestData* d) { |
| 1162 | SkPoint center1 = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()}; |
| 1163 | 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] | 1164 | SkPoint center2; |
| 1165 | SkScalar radius2; |
| 1166 | SkScalar diffLen; |
| 1167 | do { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 1168 | center2.set(d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1169 | // If the circles share a center than we can't be in the outside case |
| 1170 | } while (center1 == center2); |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 1171 | SkPoint diff = center2 - center1; |
| 1172 | diffLen = diff.length(); |
| 1173 | // Below makes sure that circle one is not contained within circle two |
| 1174 | // and have radius2 >= radius to match sorting on cpu side |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 1175 | radius2 = radius1 + d->fRandom->nextRangeF(0.f, diffLen); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1176 | |
| 1177 | SkColor colors[kMaxRandomGradientColors]; |
| 1178 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 1179 | SkScalar* stops = stopsArray; |
| 1180 | SkShader::TileMode tm; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 1181 | int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tm); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1182 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 1183 | center2, radius2, |
| 1184 | colors, stops, colorCount, |
| 1185 | tm)); |
| 1186 | SkPaint paint; |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 1187 | GrColor paintColor; |
joshualitt | 8ca93e7 | 2015-07-08 06:51:43 -0700 | [diff] [blame] | 1188 | GrFragmentProcessor* fp; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 1189 | SkAssertResult(shader->asFragmentProcessor(d->fContext, paint, |
| 1190 | GrTest::TestMatrix(d->fRandom), NULL, |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 1191 | &paintColor, d->fProcDataManager, &fp)); |
joshualitt | 8ca93e7 | 2015-07-08 06:51:43 -0700 | [diff] [blame] | 1192 | return fp; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1193 | } |
| 1194 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 1195 | GLCircleOutside2PtConicalEffect::GLCircleOutside2PtConicalEffect(const GrProcessor& processor) |
| 1196 | : fVSVaryingName(NULL) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1197 | , fFSVaryingName(NULL) |
| 1198 | , fCachedCenterX(SK_ScalarMax) |
| 1199 | , fCachedCenterY(SK_ScalarMax) |
| 1200 | , fCachedA(SK_ScalarMax) |
| 1201 | , fCachedB(SK_ScalarMax) |
| 1202 | , fCachedC(SK_ScalarMax) |
| 1203 | , fCachedTLimit(SK_ScalarMax) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1204 | const CircleOutside2PtConicalEffect& data = processor.cast<CircleOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1205 | fIsFlipped = data.isFlipped(); |
| 1206 | } |
| 1207 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 1208 | void GLCircleOutside2PtConicalEffect::emitCode(EmitArgs& args) { |
| 1209 | const CircleOutside2PtConicalEffect& ge = args.fFp.cast<CircleOutside2PtConicalEffect>(); |
| 1210 | this->emitUniforms(args.fBuilder, ge); |
| 1211 | fCenterUni = args.fBuilder->addUniform(GrGLProgramBuilder::kFragment_Visibility, |
bsalomon | 422f56f | 2014-12-09 10:18:12 -0800 | [diff] [blame] | 1212 | kVec2f_GrSLType, kDefault_GrSLPrecision, |
| 1213 | "Conical2FSCenter"); |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 1214 | fParamUni = args.fBuilder->addUniform(GrGLProgramBuilder::kFragment_Visibility, |
bsalomon | 422f56f | 2014-12-09 10:18:12 -0800 | [diff] [blame] | 1215 | kVec4f_GrSLType, kDefault_GrSLPrecision, |
| 1216 | "Conical2FSParams"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1217 | SkString tName("t"); |
| 1218 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 1219 | GrGLShaderVar center = args.fBuilder->getUniformVariable(fCenterUni); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1220 | // params.x = A |
| 1221 | // params.y = B |
| 1222 | // params.z = C |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 1223 | GrGLShaderVar params = args.fBuilder->getUniformVariable(fParamUni); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1224 | |
| 1225 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 1226 | GrGLFragmentBuilder* fsBuilder = args.fBuilder->getFragmentShaderBuilder(); |
| 1227 | SkString coords2DString = fsBuilder->ensureFSCoords2D(args.fCoords, 0); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 1228 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1229 | |
| 1230 | // output will default to transparent black (we simply won't write anything |
| 1231 | // else to it if invalid, instead of discarding or returning prematurely) |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 1232 | fsBuilder->codeAppendf("\t%s = vec4(0.0,0.0,0.0,0.0);\n", args.fOutputColor); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1233 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1234 | // p = coords2D |
| 1235 | // e = center end |
| 1236 | // r = radius end |
| 1237 | // A = dot(e, e) - r^2 + 2 * r - 1 |
| 1238 | // B = (r -1) / A |
| 1239 | // C = 1 / A |
| 1240 | // d = dot(e, p) + B |
| 1241 | // t = d +/- sqrt(d^2 - A * dot(p, p) + C) |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1242 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1243 | fsBuilder->codeAppendf("\tfloat pDotp = dot(%s, %s);\n", coords2D, coords2D); |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 1244 | fsBuilder->codeAppendf("\tfloat d = dot(%s, %s) + %s.y;\n", coords2D, center.c_str(), |
| 1245 | params.c_str()); |
| 1246 | fsBuilder->codeAppendf("\tfloat deter = d * d - %s.x * pDotp + %s.z;\n", params.c_str(), |
| 1247 | params.c_str()); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1248 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1249 | // Must check to see if we flipped the circle order (to make sure start radius < end radius) |
| 1250 | // If so we must also flip sign on sqrt |
| 1251 | if (!fIsFlipped) { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1252 | fsBuilder->codeAppendf("\tfloat %s = d + sqrt(deter);\n", tName.c_str()); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1253 | } else { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1254 | fsBuilder->codeAppendf("\tfloat %s = d - sqrt(deter);\n", tName.c_str()); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1255 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1256 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1257 | fsBuilder->codeAppendf("\tif (%s >= %s.w && deter >= 0.0) {\n", tName.c_str(), params.c_str()); |
| 1258 | fsBuilder->codeAppend("\t\t"); |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 1259 | this->emitColor(args.fBuilder, ge, tName.c_str(), args.fOutputColor, args.fInputColor, |
| 1260 | args.fSamplers); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1261 | fsBuilder->codeAppend("\t}\n"); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1262 | } |
| 1263 | |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame^] | 1264 | void GLCircleOutside2PtConicalEffect::onSetData(const GrGLProgramDataManager& pdman, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1265 | const GrProcessor& processor) { |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame^] | 1266 | INHERITED::onSetData(pdman, processor); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1267 | const CircleOutside2PtConicalEffect& data = processor.cast<CircleOutside2PtConicalEffect>(); |
commit-bot@chromium.org | 44d83c1 | 2014-04-21 13:10:25 +0000 | [diff] [blame] | 1268 | SkASSERT(data.isFlipped() == fIsFlipped); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1269 | SkScalar centerX = data.centerX(); |
| 1270 | SkScalar centerY = data.centerY(); |
| 1271 | SkScalar A = data.A(); |
| 1272 | SkScalar B = data.B(); |
| 1273 | SkScalar C = data.C(); |
| 1274 | SkScalar tLimit = data.tLimit(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1275 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1276 | if (fCachedCenterX != centerX || fCachedCenterY != centerY || |
| 1277 | fCachedA != A || fCachedB != B || fCachedC != C || fCachedTLimit != tLimit) { |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1278 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 1279 | pdman.set2f(fCenterUni, SkScalarToFloat(centerX), SkScalarToFloat(centerY)); |
| 1280 | pdman.set4f(fParamUni, SkScalarToFloat(A), SkScalarToFloat(B), SkScalarToFloat(C), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1281 | SkScalarToFloat(tLimit)); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1282 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1283 | fCachedCenterX = centerX; |
| 1284 | fCachedCenterY = centerY; |
| 1285 | fCachedA = A; |
| 1286 | fCachedB = B; |
| 1287 | fCachedC = C; |
| 1288 | fCachedTLimit = tLimit; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1289 | } |
| 1290 | } |
| 1291 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1292 | void GLCircleOutside2PtConicalEffect::GenKey(const GrProcessor& processor, |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 1293 | const GrGLSLCaps&, GrProcessorKeyBuilder* b) { |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 1294 | uint32_t* key = b->add32n(2); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1295 | key[0] = GenBaseGradientKey(processor); |
| 1296 | key[1] = processor.cast<CircleOutside2PtConicalEffect>().isFlipped(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1297 | } |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1298 | |
| 1299 | ////////////////////////////////////////////////////////////////////////////// |
| 1300 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1301 | GrFragmentProcessor* Gr2PtConicalGradientEffect::Create(GrContext* ctx, |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 1302 | GrProcessorDataManager* procDataManager, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1303 | const SkTwoPointConicalGradient& shader, |
| 1304 | SkShader::TileMode tm, |
| 1305 | const SkMatrix* localMatrix) { |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1306 | SkMatrix matrix; |
| 1307 | if (!shader.getLocalMatrix().invert(&matrix)) { |
| 1308 | return NULL; |
| 1309 | } |
commit-bot@chromium.org | 96fb748 | 2014-05-09 20:28:11 +0000 | [diff] [blame] | 1310 | if (localMatrix) { |
| 1311 | SkMatrix inv; |
| 1312 | if (!localMatrix->invert(&inv)) { |
| 1313 | return NULL; |
| 1314 | } |
| 1315 | matrix.postConcat(inv); |
| 1316 | } |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1317 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1318 | if (shader.getStartRadius() < kErrorTol) { |
| 1319 | SkScalar focalX; |
| 1320 | ConicalType type = set_matrix_focal_conical(shader, &matrix, &focalX); |
| 1321 | if (type == kInside_ConicalType) { |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 1322 | return FocalInside2PtConicalEffect::Create(ctx, procDataManager, shader, matrix, tm, |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 1323 | focalX); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1324 | } else if(type == kEdge_ConicalType) { |
| 1325 | set_matrix_edge_conical(shader, &matrix); |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 1326 | return Edge2PtConicalEffect::Create(ctx, procDataManager, shader, matrix, tm); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1327 | } else { |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 1328 | return FocalOutside2PtConicalEffect::Create(ctx, procDataManager, shader, matrix, tm, |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 1329 | focalX); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1330 | } |
| 1331 | } |
| 1332 | |
| 1333 | CircleConicalInfo info; |
| 1334 | ConicalType type = set_matrix_circle_conical(shader, &matrix, &info); |
| 1335 | |
| 1336 | if (type == kInside_ConicalType) { |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 1337 | return CircleInside2PtConicalEffect::Create(ctx, procDataManager, shader, matrix, tm, |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 1338 | info); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1339 | } else if (type == kEdge_ConicalType) { |
| 1340 | set_matrix_edge_conical(shader, &matrix); |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 1341 | return Edge2PtConicalEffect::Create(ctx, procDataManager, shader, matrix, tm); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1342 | } else { |
joshualitt | 9cc1775 | 2015-07-09 06:28:14 -0700 | [diff] [blame] | 1343 | return CircleOutside2PtConicalEffect::Create(ctx, procDataManager, shader, matrix, tm, |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 1344 | info); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1345 | } |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1346 | } |
| 1347 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1348 | #endif |