commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2014 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 7 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 8 | #include "SkTwoPointConicalGradient_gpu.h" |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 9 | |
| 10 | #include "SkTwoPointConicalGradient.h" |
| 11 | |
commit-bot@chromium.org | ef93d29 | 2014-04-10 15:37:52 +0000 | [diff] [blame] | 12 | #if SK_SUPPORT_GPU |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 13 | #include "GrCoordTransform.h" |
| 14 | #include "GrInvariantOutput.h" |
joshualitt | 8ca93e7 | 2015-07-08 06:51:43 -0700 | [diff] [blame] | 15 | #include "GrPaint.h" |
egdaniel | 2d721d3 | 2015-11-11 13:06:05 -0800 | [diff] [blame] | 16 | #include "glsl/GrGLSLFragmentShaderBuilder.h" |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 17 | #include "glsl/GrGLSLProgramDataManager.h" |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 18 | #include "glsl/GrGLSLUniformHandler.h" |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 19 | // For brevity |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 20 | typedef GrGLSLProgramDataManager::UniformHandle UniformHandle; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 21 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 22 | static const SkScalar kErrorTol = 0.00001f; |
egdaniel | 8405ef9 | 2014-06-09 11:57:28 -0700 | [diff] [blame] | 23 | static const SkScalar kEdgeErrorTol = 5.f * kErrorTol; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 24 | |
| 25 | /** |
| 26 | * We have three general cases for 2pt conical gradients. First we always assume that |
| 27 | * the start radius <= end radius. Our first case (kInside_) is when the start circle |
| 28 | * is completely enclosed by the end circle. The second case (kOutside_) is the case |
| 29 | * when the start circle is either completely outside the end circle or the circles |
| 30 | * overlap. The final case (kEdge_) is when the start circle is inside the end one, |
| 31 | * but the two are just barely touching at 1 point along their edges. |
| 32 | */ |
| 33 | enum ConicalType { |
| 34 | kInside_ConicalType, |
| 35 | kOutside_ConicalType, |
| 36 | kEdge_ConicalType, |
| 37 | }; |
| 38 | |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 39 | ////////////////////////////////////////////////////////////////////////////// |
| 40 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 41 | static void set_matrix_edge_conical(const SkTwoPointConicalGradient& shader, |
| 42 | SkMatrix* invLMatrix) { |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 43 | // Inverse of the current local matrix is passed in then, |
| 44 | // translate to center1, rotate so center2 is on x axis. |
| 45 | const SkPoint& center1 = shader.getStartCenter(); |
| 46 | const SkPoint& center2 = shader.getEndCenter(); |
| 47 | |
| 48 | invLMatrix->postTranslate(-center1.fX, -center1.fY); |
| 49 | |
| 50 | SkPoint diff = center2 - center1; |
| 51 | SkScalar diffLen = diff.length(); |
| 52 | if (0 != diffLen) { |
| 53 | SkScalar invDiffLen = SkScalarInvert(diffLen); |
| 54 | SkMatrix rot; |
| 55 | rot.setSinCos(-SkScalarMul(invDiffLen, diff.fY), |
| 56 | SkScalarMul(invDiffLen, diff.fX)); |
| 57 | invLMatrix->postConcat(rot); |
| 58 | } |
| 59 | } |
| 60 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 61 | class Edge2PtConicalEffect : public GrGradientEffect { |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 62 | public: |
| 63 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 64 | static GrFragmentProcessor* Create(GrContext* ctx, |
| 65 | const SkTwoPointConicalGradient& shader, |
| 66 | const SkMatrix& matrix, |
| 67 | SkShader::TileMode tm) { |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 68 | return new Edge2PtConicalEffect(ctx, shader, matrix, tm); |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 69 | } |
| 70 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 71 | virtual ~Edge2PtConicalEffect() {} |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 72 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 73 | const char* name() const override { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 74 | return "Two-Point Conical Gradient Edge Touching"; |
| 75 | } |
| 76 | |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 77 | // The radial gradient parameters can collapse to a linear (instead of quadratic) equation. |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 78 | SkScalar center() const { return fCenterX1; } |
| 79 | SkScalar diffRadius() const { return fDiffRadius; } |
| 80 | SkScalar radius() const { return fRadius0; } |
| 81 | |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 82 | private: |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 83 | GrGLSLFragmentProcessor* onCreateGLSLInstance() const override; |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 84 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 85 | void onGetGLSLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override; |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame] | 86 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 87 | bool onIsEqual(const GrFragmentProcessor& sBase) const override { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 88 | const Edge2PtConicalEffect& s = sBase.cast<Edge2PtConicalEffect>(); |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 89 | return (INHERITED::onIsEqual(sBase) && |
| 90 | this->fCenterX1 == s.fCenterX1 && |
| 91 | this->fRadius0 == s.fRadius0 && |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 92 | this->fDiffRadius == s.fDiffRadius); |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 93 | } |
| 94 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 95 | Edge2PtConicalEffect(GrContext* ctx, |
| 96 | const SkTwoPointConicalGradient& shader, |
| 97 | const SkMatrix& matrix, |
| 98 | SkShader::TileMode tm) |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 99 | : INHERITED(ctx, shader, matrix, tm), |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 100 | fCenterX1(shader.getCenterX1()), |
| 101 | fRadius0(shader.getStartRadius()), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 102 | fDiffRadius(shader.getDiffRadius()){ |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 103 | this->initClassID<Edge2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 104 | // 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] | 105 | // 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] | 106 | // start radius was close to zero, otherwise we scaled by the start radius. In addition |
| 107 | // Our test for the edge case in set_matrix_circle_conical has a higher tolerance so we |
| 108 | // need the sqrt value below |
| 109 | SkASSERT(SkScalarAbs(SkScalarAbs(fDiffRadius) - fCenterX1) < |
| 110 | (fRadius0 < kErrorTol ? shader.getEndRadius() * kEdgeErrorTol : |
| 111 | fRadius0 * sqrt(kEdgeErrorTol))); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 112 | |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 113 | // We pass the linear part of the quadratic as a varying. |
| 114 | // float b = -2.0 * (fCenterX1 * x + fRadius0 * fDiffRadius * z) |
| 115 | fBTransform = this->getCoordTransform(); |
| 116 | SkMatrix& bMatrix = *fBTransform.accessMatrix(); |
| 117 | SkScalar r0dr = SkScalarMul(fRadius0, fDiffRadius); |
| 118 | bMatrix[SkMatrix::kMScaleX] = -2 * (SkScalarMul(fCenterX1, bMatrix[SkMatrix::kMScaleX]) + |
| 119 | SkScalarMul(r0dr, bMatrix[SkMatrix::kMPersp0])); |
| 120 | bMatrix[SkMatrix::kMSkewX] = -2 * (SkScalarMul(fCenterX1, bMatrix[SkMatrix::kMSkewX]) + |
| 121 | SkScalarMul(r0dr, bMatrix[SkMatrix::kMPersp1])); |
| 122 | bMatrix[SkMatrix::kMTransX] = -2 * (SkScalarMul(fCenterX1, bMatrix[SkMatrix::kMTransX]) + |
| 123 | SkScalarMul(r0dr, bMatrix[SkMatrix::kMPersp2])); |
| 124 | this->addCoordTransform(&fBTransform); |
| 125 | } |
| 126 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 127 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 128 | |
| 129 | // @{ |
| 130 | // Cache of values - these can change arbitrarily, EXCEPT |
| 131 | // we shouldn't change between degenerate and non-degenerate?! |
| 132 | |
| 133 | GrCoordTransform fBTransform; |
| 134 | SkScalar fCenterX1; |
| 135 | SkScalar fRadius0; |
| 136 | SkScalar fDiffRadius; |
| 137 | |
| 138 | // @} |
| 139 | |
| 140 | typedef GrGradientEffect INHERITED; |
| 141 | }; |
| 142 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 143 | class GLEdge2PtConicalEffect : public GrGLGradientEffect { |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 144 | public: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 145 | GLEdge2PtConicalEffect(const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 146 | virtual ~GLEdge2PtConicalEffect() { } |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 147 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 148 | virtual void emitCode(EmitArgs&) override; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 149 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 150 | static void GenKey(const GrProcessor&, const GrGLSLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 151 | |
| 152 | protected: |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 153 | void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override; |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 154 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 155 | UniformHandle fParamUni; |
| 156 | |
| 157 | const char* fVSVaryingName; |
| 158 | const char* fFSVaryingName; |
| 159 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 160 | // @{ |
| 161 | /// Values last uploaded as uniforms |
| 162 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 163 | SkScalar fCachedRadius; |
| 164 | SkScalar fCachedDiffRadius; |
| 165 | |
| 166 | // @} |
| 167 | |
| 168 | private: |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 169 | typedef GrGLGradientEffect INHERITED; |
| 170 | |
| 171 | }; |
| 172 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 173 | void Edge2PtConicalEffect::onGetGLSLProcessorKey(const GrGLSLCaps& caps, |
| 174 | GrProcessorKeyBuilder* b) const { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 175 | GLEdge2PtConicalEffect::GenKey(*this, caps, b); |
| 176 | } |
| 177 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 178 | GrGLSLFragmentProcessor* Edge2PtConicalEffect::onCreateGLSLInstance() const { |
halcanary | 385fe4d | 2015-08-26 13:07:48 -0700 | [diff] [blame] | 179 | return new GLEdge2PtConicalEffect(*this); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 180 | } |
skia.committer@gmail.com | 221b911 | 2014-04-04 03:04:32 +0000 | [diff] [blame] | 181 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 182 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(Edge2PtConicalEffect); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 183 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 184 | /* |
| 185 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 186 | */ |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 187 | const GrFragmentProcessor* Edge2PtConicalEffect::TestCreate(GrProcessorTestData* d) { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 188 | SkPoint center1 = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()}; |
| 189 | SkScalar radius1 = d->fRandom->nextUScalar1(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 190 | SkPoint center2; |
| 191 | SkScalar radius2; |
| 192 | do { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 193 | center2.set(d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 194 | // If the circles are identical the factory will give us an empty shader. |
| 195 | // This will happen if we pick identical centers |
| 196 | } while (center1 == center2); |
| 197 | |
| 198 | // Below makes sure that circle one is contained within circle two |
| 199 | // and both circles are touching on an edge |
| 200 | SkPoint diff = center2 - center1; |
| 201 | SkScalar diffLen = diff.length(); |
| 202 | radius2 = radius1 + diffLen; |
| 203 | |
| 204 | SkColor colors[kMaxRandomGradientColors]; |
| 205 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 206 | SkScalar* stops = stopsArray; |
| 207 | SkShader::TileMode tm; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 208 | int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tm); |
reed | 8a21c9f | 2016-03-08 18:50:00 -0800 | [diff] [blame] | 209 | auto shader = SkGradientShader::MakeTwoPointConical(center1, radius1, center2, radius2, |
| 210 | colors, stops, colorCount, tm); |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 211 | const GrFragmentProcessor* fp = shader->asFragmentProcessor(d->fContext, |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 212 | GrTest::TestMatrix(d->fRandom), NULL, kNone_SkFilterQuality); |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 213 | GrAlwaysAssert(fp); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 214 | return fp; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 215 | } |
| 216 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 217 | GLEdge2PtConicalEffect::GLEdge2PtConicalEffect(const GrProcessor&) |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 218 | : fVSVaryingName(nullptr) |
| 219 | , fFSVaryingName(nullptr) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 220 | , fCachedRadius(-SK_ScalarMax) |
| 221 | , fCachedDiffRadius(-SK_ScalarMax) {} |
| 222 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 223 | void GLEdge2PtConicalEffect::emitCode(EmitArgs& args) { |
| 224 | const Edge2PtConicalEffect& ge = args.fFp.cast<Edge2PtConicalEffect>(); |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 225 | GrGLSLUniformHandler* uniformHandler = args.fUniformHandler; |
| 226 | this->emitUniforms(uniformHandler, ge); |
jvanverth | de11ee4 | 2016-02-26 13:58:40 -0800 | [diff] [blame] | 227 | fParamUni = uniformHandler->addUniform(kFragment_GrShaderFlag, |
| 228 | kVec3f_GrSLType, kDefault_GrSLPrecision, |
| 229 | "Conical2FSParams"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 230 | |
| 231 | SkString cName("c"); |
| 232 | SkString tName("t"); |
| 233 | SkString p0; // start radius |
| 234 | SkString p1; // start radius squared |
| 235 | SkString p2; // difference in radii (r1 - r0) |
| 236 | |
jvanverth | de11ee4 | 2016-02-26 13:58:40 -0800 | [diff] [blame] | 237 | |
| 238 | p0.appendf("%s.x", uniformHandler->getUniformVariable(fParamUni).getName().c_str()); |
| 239 | p1.appendf("%s.y", uniformHandler->getUniformVariable(fParamUni).getName().c_str()); |
| 240 | p2.appendf("%s.z", uniformHandler->getUniformVariable(fParamUni).getName().c_str()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 241 | |
| 242 | // We interpolate the linear component in coords[1]. |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 243 | SkASSERT(args.fCoords[0].getType() == args.fCoords[1].getType()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 244 | const char* coords2D; |
| 245 | SkString bVar; |
cdalton | 8528541 | 2016-02-18 12:37:07 -0800 | [diff] [blame] | 246 | GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder; |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 247 | if (kVec3f_GrSLType == args.fCoords[0].getType()) { |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 248 | fragBuilder->codeAppendf("\tvec3 interpolants = vec3(%s.xy / %s.z, %s.x / %s.z);\n", |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 249 | args.fCoords[0].c_str(), args.fCoords[0].c_str(), |
| 250 | args.fCoords[1].c_str(), args.fCoords[1].c_str()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 251 | coords2D = "interpolants.xy"; |
| 252 | bVar = "interpolants.z"; |
| 253 | } else { |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 254 | coords2D = args.fCoords[0].c_str(); |
| 255 | bVar.printf("%s.x", args.fCoords[1].c_str()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 256 | } |
| 257 | |
| 258 | // output will default to transparent black (we simply won't write anything |
| 259 | // else to it if invalid, instead of discarding or returning prematurely) |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 260 | fragBuilder->codeAppendf("\t%s = vec4(0.0,0.0,0.0,0.0);\n", args.fOutputColor); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 261 | |
| 262 | // c = (x^2)+(y^2) - params[1] |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 263 | fragBuilder->codeAppendf("\tfloat %s = dot(%s, %s) - %s;\n", |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 264 | cName.c_str(), coords2D, coords2D, p1.c_str()); |
| 265 | |
| 266 | // linear case: t = -c/b |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 267 | fragBuilder->codeAppendf("\tfloat %s = -(%s / %s);\n", tName.c_str(), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 268 | cName.c_str(), bVar.c_str()); |
| 269 | |
| 270 | // if r(t) > 0, then t will be the x coordinate |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 271 | fragBuilder->codeAppendf("\tif (%s * %s + %s > 0.0) {\n", tName.c_str(), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 272 | p2.c_str(), p0.c_str()); |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 273 | fragBuilder->codeAppend("\t"); |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 274 | this->emitColor(fragBuilder, |
| 275 | uniformHandler, |
egdaniel | a2e3e0f | 2015-11-19 07:23:45 -0800 | [diff] [blame] | 276 | args.fGLSLCaps, |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 277 | ge, |
| 278 | tName.c_str(), |
| 279 | args.fOutputColor, |
| 280 | args.fInputColor, |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 281 | args.fSamplers); |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 282 | fragBuilder->codeAppend("\t}\n"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 283 | } |
| 284 | |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 285 | void GLEdge2PtConicalEffect::onSetData(const GrGLSLProgramDataManager& pdman, |
| 286 | const GrProcessor& processor) { |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 287 | INHERITED::onSetData(pdman, processor); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 288 | const Edge2PtConicalEffect& data = processor.cast<Edge2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 289 | SkScalar radius0 = data.radius(); |
| 290 | SkScalar diffRadius = data.diffRadius(); |
| 291 | |
| 292 | if (fCachedRadius != radius0 || |
| 293 | fCachedDiffRadius != diffRadius) { |
| 294 | |
halcanary | 9d524f2 | 2016-03-29 09:03:52 -0700 | [diff] [blame^] | 295 | pdman.set3f(fParamUni, SkScalarToFloat(radius0), |
jvanverth | de11ee4 | 2016-02-26 13:58:40 -0800 | [diff] [blame] | 296 | SkScalarToFloat(SkScalarMul(radius0, radius0)), SkScalarToFloat(diffRadius)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 297 | fCachedRadius = radius0; |
| 298 | fCachedDiffRadius = diffRadius; |
| 299 | } |
| 300 | } |
| 301 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 302 | void GLEdge2PtConicalEffect::GenKey(const GrProcessor& processor, |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 303 | const GrGLSLCaps&, GrProcessorKeyBuilder* b) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 304 | b->add32(GenBaseGradientKey(processor)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 305 | } |
| 306 | |
| 307 | ////////////////////////////////////////////////////////////////////////////// |
| 308 | // Focal Conical Gradients |
| 309 | ////////////////////////////////////////////////////////////////////////////// |
| 310 | |
| 311 | static ConicalType set_matrix_focal_conical(const SkTwoPointConicalGradient& shader, |
| 312 | SkMatrix* invLMatrix, SkScalar* focalX) { |
| 313 | // Inverse of the current local matrix is passed in then, |
| 314 | // translate, scale, and rotate such that endCircle is unit circle on x-axis, |
| 315 | // and focal point is at the origin. |
| 316 | ConicalType conicalType; |
| 317 | const SkPoint& focal = shader.getStartCenter(); |
| 318 | const SkPoint& centerEnd = shader.getEndCenter(); |
| 319 | SkScalar radius = shader.getEndRadius(); |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 320 | SkScalar invRadius = 1.f / radius; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 321 | |
| 322 | SkMatrix matrix; |
| 323 | |
| 324 | matrix.setTranslate(-centerEnd.fX, -centerEnd.fY); |
| 325 | matrix.postScale(invRadius, invRadius); |
| 326 | |
| 327 | SkPoint focalTrans; |
| 328 | matrix.mapPoints(&focalTrans, &focal, 1); |
| 329 | *focalX = focalTrans.length(); |
| 330 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 331 | if (0.f != *focalX) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 332 | SkScalar invFocalX = SkScalarInvert(*focalX); |
| 333 | SkMatrix rot; |
| 334 | rot.setSinCos(-SkScalarMul(invFocalX, focalTrans.fY), |
| 335 | SkScalarMul(invFocalX, focalTrans.fX)); |
| 336 | matrix.postConcat(rot); |
| 337 | } |
| 338 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 339 | matrix.postTranslate(-(*focalX), 0.f); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 340 | |
| 341 | // If the focal point is touching the edge of the circle it will |
| 342 | // cause a degenerate case that must be handled separately |
egdaniel | 8405ef9 | 2014-06-09 11:57:28 -0700 | [diff] [blame] | 343 | // kEdgeErrorTol = 5 * kErrorTol was picked after manual testing the |
| 344 | // stability trade off versus the linear approx used in the Edge Shader |
| 345 | if (SkScalarAbs(1.f - (*focalX)) < kEdgeErrorTol) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 346 | return kEdge_ConicalType; |
| 347 | } |
| 348 | |
| 349 | // Scale factor 1 / (1 - focalX * focalX) |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 350 | SkScalar oneMinusF2 = 1.f - SkScalarMul(*focalX, *focalX); |
reed | 80ea19c | 2015-05-12 10:37:34 -0700 | [diff] [blame] | 351 | SkScalar s = SkScalarInvert(oneMinusF2); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 352 | |
| 353 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 354 | if (s >= 0.f) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 355 | conicalType = kInside_ConicalType; |
| 356 | matrix.postScale(s, s * SkScalarSqrt(oneMinusF2)); |
| 357 | } else { |
| 358 | conicalType = kOutside_ConicalType; |
| 359 | matrix.postScale(s, s); |
| 360 | } |
| 361 | |
| 362 | invLMatrix->postConcat(matrix); |
| 363 | |
| 364 | return conicalType; |
| 365 | } |
| 366 | |
| 367 | ////////////////////////////////////////////////////////////////////////////// |
| 368 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 369 | class FocalOutside2PtConicalEffect : public GrGradientEffect { |
| 370 | public: |
| 371 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 372 | static GrFragmentProcessor* Create(GrContext* ctx, |
| 373 | const SkTwoPointConicalGradient& shader, |
| 374 | const SkMatrix& matrix, |
| 375 | SkShader::TileMode tm, |
| 376 | SkScalar focalX) { |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 377 | return new FocalOutside2PtConicalEffect(ctx, shader, matrix, tm, focalX); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 378 | } |
| 379 | |
| 380 | virtual ~FocalOutside2PtConicalEffect() { } |
| 381 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 382 | const char* name() const override { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 383 | return "Two-Point Conical Gradient Focal Outside"; |
| 384 | } |
| 385 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 386 | bool isFlipped() const { return fIsFlipped; } |
| 387 | SkScalar focal() const { return fFocalX; } |
| 388 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 389 | private: |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 390 | GrGLSLFragmentProcessor* onCreateGLSLInstance() const override; |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 391 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 392 | void onGetGLSLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override; |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame] | 393 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 394 | bool onIsEqual(const GrFragmentProcessor& sBase) const override { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 395 | const FocalOutside2PtConicalEffect& s = sBase.cast<FocalOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 396 | return (INHERITED::onIsEqual(sBase) && |
| 397 | this->fFocalX == s.fFocalX && |
| 398 | this->fIsFlipped == s.fIsFlipped); |
| 399 | } |
| 400 | |
| 401 | FocalOutside2PtConicalEffect(GrContext* ctx, |
| 402 | const SkTwoPointConicalGradient& shader, |
| 403 | const SkMatrix& matrix, |
| 404 | SkShader::TileMode tm, |
| 405 | SkScalar focalX) |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 406 | : INHERITED(ctx, shader, matrix, tm) |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 407 | , fFocalX(focalX) |
| 408 | , fIsFlipped(shader.isFlippedGrad()) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 409 | this->initClassID<FocalOutside2PtConicalEffect>(); |
| 410 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 411 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 412 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 413 | |
| 414 | SkScalar fFocalX; |
| 415 | bool fIsFlipped; |
| 416 | |
| 417 | typedef GrGradientEffect INHERITED; |
| 418 | }; |
| 419 | |
| 420 | class GLFocalOutside2PtConicalEffect : public GrGLGradientEffect { |
| 421 | public: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 422 | GLFocalOutside2PtConicalEffect(const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 423 | virtual ~GLFocalOutside2PtConicalEffect() { } |
| 424 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 425 | virtual void emitCode(EmitArgs&) override; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 426 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 427 | static void GenKey(const GrProcessor&, const GrGLSLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 428 | |
| 429 | protected: |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 430 | void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override; |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 431 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 432 | UniformHandle fParamUni; |
| 433 | |
| 434 | const char* fVSVaryingName; |
| 435 | const char* fFSVaryingName; |
| 436 | |
| 437 | bool fIsFlipped; |
| 438 | |
| 439 | // @{ |
| 440 | /// Values last uploaded as uniforms |
| 441 | |
| 442 | SkScalar fCachedFocal; |
| 443 | |
| 444 | // @} |
| 445 | |
| 446 | private: |
| 447 | typedef GrGLGradientEffect INHERITED; |
| 448 | |
| 449 | }; |
| 450 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 451 | void FocalOutside2PtConicalEffect::onGetGLSLProcessorKey(const GrGLSLCaps& caps, |
| 452 | GrProcessorKeyBuilder* b) const { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 453 | GLFocalOutside2PtConicalEffect::GenKey(*this, caps, b); |
| 454 | } |
| 455 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 456 | GrGLSLFragmentProcessor* FocalOutside2PtConicalEffect::onCreateGLSLInstance() const { |
halcanary | 385fe4d | 2015-08-26 13:07:48 -0700 | [diff] [blame] | 457 | return new GLFocalOutside2PtConicalEffect(*this); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 458 | } |
| 459 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 460 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(FocalOutside2PtConicalEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 461 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 462 | /* |
| 463 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 464 | */ |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 465 | const GrFragmentProcessor* FocalOutside2PtConicalEffect::TestCreate(GrProcessorTestData* d) { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 466 | SkPoint center1 = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()}; |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 467 | SkScalar radius1 = 0.f; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 468 | SkPoint center2; |
| 469 | SkScalar radius2; |
| 470 | do { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 471 | center2.set(d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 472 | // 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] | 473 | } while (center1 == center2); |
| 474 | SkPoint diff = center2 - center1; |
| 475 | SkScalar diffLen = diff.length(); |
| 476 | // Below makes sure that the focal point is not contained within circle two |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 477 | radius2 = d->fRandom->nextRangeF(0.f, diffLen); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 478 | |
| 479 | SkColor colors[kMaxRandomGradientColors]; |
| 480 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 481 | SkScalar* stops = stopsArray; |
| 482 | SkShader::TileMode tm; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 483 | int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tm); |
reed | 8a21c9f | 2016-03-08 18:50:00 -0800 | [diff] [blame] | 484 | auto shader = SkGradientShader::MakeTwoPointConical(center1, radius1, center2, radius2, |
| 485 | colors, stops, colorCount, tm); |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 486 | const GrFragmentProcessor* fp = shader->asFragmentProcessor(d->fContext, |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 487 | GrTest::TestMatrix(d->fRandom), NULL, kNone_SkFilterQuality); |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 488 | GrAlwaysAssert(fp); |
| 489 | return fp; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 490 | } |
| 491 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 492 | GLFocalOutside2PtConicalEffect::GLFocalOutside2PtConicalEffect(const GrProcessor& processor) |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 493 | : fVSVaryingName(nullptr) |
| 494 | , fFSVaryingName(nullptr) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 495 | , fCachedFocal(SK_ScalarMax) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 496 | const FocalOutside2PtConicalEffect& data = processor.cast<FocalOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 497 | fIsFlipped = data.isFlipped(); |
| 498 | } |
| 499 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 500 | void GLFocalOutside2PtConicalEffect::emitCode(EmitArgs& args) { |
| 501 | const FocalOutside2PtConicalEffect& ge = args.fFp.cast<FocalOutside2PtConicalEffect>(); |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 502 | GrGLSLUniformHandler* uniformHandler = args.fUniformHandler; |
| 503 | this->emitUniforms(uniformHandler, ge); |
jvanverth | de11ee4 | 2016-02-26 13:58:40 -0800 | [diff] [blame] | 504 | fParamUni = uniformHandler->addUniform(kFragment_GrShaderFlag, |
| 505 | kVec2f_GrSLType, kDefault_GrSLPrecision, |
| 506 | "Conical2FSParams"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 507 | SkString tName("t"); |
| 508 | SkString p0; // focalX |
| 509 | SkString p1; // 1 - focalX * focalX |
| 510 | |
jvanverth | de11ee4 | 2016-02-26 13:58:40 -0800 | [diff] [blame] | 511 | p0.appendf("%s.x", uniformHandler->getUniformVariable(fParamUni).getName().c_str()); |
| 512 | p1.appendf("%s.y", uniformHandler->getUniformVariable(fParamUni).getName().c_str()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 513 | |
| 514 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
cdalton | 8528541 | 2016-02-18 12:37:07 -0800 | [diff] [blame] | 515 | GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder; |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 516 | SkString coords2DString = fragBuilder->ensureFSCoords2D(args.fCoords, 0); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 517 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 518 | |
| 519 | // t = p.x * focal.x +/- sqrt(p.x^2 + (1 - focal.x^2) * p.y^2) |
| 520 | |
| 521 | // output will default to transparent black (we simply won't write anything |
| 522 | // else to it if invalid, instead of discarding or returning prematurely) |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 523 | fragBuilder->codeAppendf("\t%s = vec4(0.0,0.0,0.0,0.0);\n", args.fOutputColor); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 524 | |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 525 | fragBuilder->codeAppendf("\tfloat xs = %s.x * %s.x;\n", coords2D, coords2D); |
| 526 | fragBuilder->codeAppendf("\tfloat ys = %s.y * %s.y;\n", coords2D, coords2D); |
| 527 | fragBuilder->codeAppendf("\tfloat d = xs + %s * ys;\n", p1.c_str()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 528 | |
| 529 | // Must check to see if we flipped the circle order (to make sure start radius < end radius) |
| 530 | // If so we must also flip sign on sqrt |
| 531 | if (!fIsFlipped) { |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 532 | fragBuilder->codeAppendf("\tfloat %s = %s.x * %s + sqrt(d);\n", tName.c_str(), |
| 533 | coords2D, p0.c_str()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 534 | } else { |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 535 | fragBuilder->codeAppendf("\tfloat %s = %s.x * %s - sqrt(d);\n", tName.c_str(), |
| 536 | coords2D, p0.c_str()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 537 | } |
| 538 | |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 539 | fragBuilder->codeAppendf("\tif (%s >= 0.0 && d >= 0.0) {\n", tName.c_str()); |
| 540 | fragBuilder->codeAppend("\t\t"); |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 541 | this->emitColor(fragBuilder, |
| 542 | uniformHandler, |
egdaniel | a2e3e0f | 2015-11-19 07:23:45 -0800 | [diff] [blame] | 543 | args.fGLSLCaps, |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 544 | ge, |
| 545 | tName.c_str(), |
| 546 | args.fOutputColor, |
| 547 | args.fInputColor, |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 548 | args.fSamplers); |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 549 | fragBuilder->codeAppend("\t}\n"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 550 | } |
| 551 | |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 552 | void GLFocalOutside2PtConicalEffect::onSetData(const GrGLSLProgramDataManager& pdman, |
| 553 | const GrProcessor& processor) { |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 554 | INHERITED::onSetData(pdman, processor); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 555 | const FocalOutside2PtConicalEffect& data = processor.cast<FocalOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 556 | SkASSERT(data.isFlipped() == fIsFlipped); |
| 557 | SkScalar focal = data.focal(); |
| 558 | |
| 559 | if (fCachedFocal != focal) { |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 560 | SkScalar oneMinus2F = 1.f - SkScalarMul(focal, focal); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 561 | |
jvanverth | de11ee4 | 2016-02-26 13:58:40 -0800 | [diff] [blame] | 562 | pdman.set2f(fParamUni, SkScalarToFloat(focal), SkScalarToFloat(oneMinus2F)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 563 | fCachedFocal = focal; |
| 564 | } |
| 565 | } |
| 566 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 567 | void GLFocalOutside2PtConicalEffect::GenKey(const GrProcessor& processor, |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 568 | const GrGLSLCaps&, GrProcessorKeyBuilder* b) { |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 569 | uint32_t* key = b->add32n(2); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 570 | key[0] = GenBaseGradientKey(processor); |
| 571 | key[1] = processor.cast<FocalOutside2PtConicalEffect>().isFlipped(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 572 | } |
| 573 | |
| 574 | ////////////////////////////////////////////////////////////////////////////// |
| 575 | |
| 576 | class GLFocalInside2PtConicalEffect; |
| 577 | |
| 578 | class FocalInside2PtConicalEffect : public GrGradientEffect { |
| 579 | public: |
| 580 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 581 | static GrFragmentProcessor* Create(GrContext* ctx, |
| 582 | const SkTwoPointConicalGradient& shader, |
| 583 | const SkMatrix& matrix, |
| 584 | SkShader::TileMode tm, |
| 585 | SkScalar focalX) { |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 586 | return new FocalInside2PtConicalEffect(ctx, shader, matrix, tm, focalX); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 587 | } |
| 588 | |
| 589 | virtual ~FocalInside2PtConicalEffect() {} |
| 590 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 591 | const char* name() const override { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 592 | return "Two-Point Conical Gradient Focal Inside"; |
| 593 | } |
| 594 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 595 | SkScalar focal() const { return fFocalX; } |
| 596 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 597 | typedef GLFocalInside2PtConicalEffect GLSLProcessor; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 598 | |
| 599 | private: |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 600 | GrGLSLFragmentProcessor* onCreateGLSLInstance() const override; |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 601 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 602 | void onGetGLSLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override; |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame] | 603 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 604 | bool onIsEqual(const GrFragmentProcessor& sBase) const override { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 605 | const FocalInside2PtConicalEffect& s = sBase.cast<FocalInside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 606 | return (INHERITED::onIsEqual(sBase) && |
| 607 | this->fFocalX == s.fFocalX); |
| 608 | } |
| 609 | |
| 610 | FocalInside2PtConicalEffect(GrContext* ctx, |
| 611 | const SkTwoPointConicalGradient& shader, |
| 612 | const SkMatrix& matrix, |
| 613 | SkShader::TileMode tm, |
| 614 | SkScalar focalX) |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 615 | : INHERITED(ctx, shader, matrix, tm), fFocalX(focalX) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 616 | this->initClassID<FocalInside2PtConicalEffect>(); |
| 617 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 618 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 619 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 620 | |
| 621 | SkScalar fFocalX; |
| 622 | |
| 623 | typedef GrGradientEffect INHERITED; |
| 624 | }; |
| 625 | |
| 626 | class GLFocalInside2PtConicalEffect : public GrGLGradientEffect { |
| 627 | public: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 628 | GLFocalInside2PtConicalEffect(const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 629 | virtual ~GLFocalInside2PtConicalEffect() {} |
| 630 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 631 | virtual void emitCode(EmitArgs&) override; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 632 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 633 | static void GenKey(const GrProcessor&, const GrGLSLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 634 | |
| 635 | protected: |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 636 | void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override; |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 637 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 638 | UniformHandle fFocalUni; |
| 639 | |
| 640 | const char* fVSVaryingName; |
| 641 | const char* fFSVaryingName; |
| 642 | |
| 643 | // @{ |
| 644 | /// Values last uploaded as uniforms |
| 645 | |
| 646 | SkScalar fCachedFocal; |
| 647 | |
| 648 | // @} |
| 649 | |
| 650 | private: |
| 651 | typedef GrGLGradientEffect INHERITED; |
| 652 | |
| 653 | }; |
| 654 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 655 | void FocalInside2PtConicalEffect::onGetGLSLProcessorKey(const GrGLSLCaps& caps, |
| 656 | GrProcessorKeyBuilder* b) const { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 657 | GLFocalInside2PtConicalEffect::GenKey(*this, caps, b); |
| 658 | } |
| 659 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 660 | GrGLSLFragmentProcessor* FocalInside2PtConicalEffect::onCreateGLSLInstance() const { |
halcanary | 385fe4d | 2015-08-26 13:07:48 -0700 | [diff] [blame] | 661 | return new GLFocalInside2PtConicalEffect(*this); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 662 | } |
| 663 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 664 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(FocalInside2PtConicalEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 665 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 666 | /* |
| 667 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 668 | */ |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 669 | const GrFragmentProcessor* FocalInside2PtConicalEffect::TestCreate(GrProcessorTestData* d) { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 670 | SkPoint center1 = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()}; |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 671 | SkScalar radius1 = 0.f; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 672 | SkPoint center2; |
| 673 | SkScalar radius2; |
| 674 | do { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 675 | center2.set(d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 676 | // Below makes sure radius2 is larger enouch such that the focal point |
| 677 | // is inside the end circle |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 678 | SkScalar increase = d->fRandom->nextUScalar1(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 679 | SkPoint diff = center2 - center1; |
| 680 | SkScalar diffLen = diff.length(); |
| 681 | radius2 = diffLen + increase; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 682 | // If the circles are identical the factory will give us an empty shader. |
| 683 | } while (radius1 == radius2 && center1 == center2); |
| 684 | |
| 685 | SkColor colors[kMaxRandomGradientColors]; |
| 686 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 687 | SkScalar* stops = stopsArray; |
| 688 | SkShader::TileMode tm; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 689 | int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tm); |
reed | 8a21c9f | 2016-03-08 18:50:00 -0800 | [diff] [blame] | 690 | auto shader = SkGradientShader::MakeTwoPointConical(center1, radius1, center2, radius2, |
| 691 | colors, stops, colorCount, tm); |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 692 | const GrFragmentProcessor* fp = shader->asFragmentProcessor(d->fContext, |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 693 | GrTest::TestMatrix(d->fRandom), NULL, kNone_SkFilterQuality); |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 694 | GrAlwaysAssert(fp); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 695 | return fp; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 696 | } |
| 697 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 698 | GLFocalInside2PtConicalEffect::GLFocalInside2PtConicalEffect(const GrProcessor&) |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 699 | : fVSVaryingName(nullptr) |
| 700 | , fFSVaryingName(nullptr) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 701 | , fCachedFocal(SK_ScalarMax) {} |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 702 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 703 | void GLFocalInside2PtConicalEffect::emitCode(EmitArgs& args) { |
| 704 | const FocalInside2PtConicalEffect& ge = args.fFp.cast<FocalInside2PtConicalEffect>(); |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 705 | GrGLSLUniformHandler* uniformHandler = args.fUniformHandler; |
| 706 | this->emitUniforms(uniformHandler, ge); |
cdalton | 5e58cee | 2016-02-11 12:49:47 -0800 | [diff] [blame] | 707 | fFocalUni = uniformHandler->addUniform(kFragment_GrShaderFlag, |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 708 | kFloat_GrSLType, kDefault_GrSLPrecision, |
| 709 | "Conical2FSParams"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 710 | SkString tName("t"); |
| 711 | |
| 712 | // this is the distance along x-axis from the end center to focal point in |
| 713 | // transformed coordinates |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 714 | GrGLSLShaderVar focal = uniformHandler->getUniformVariable(fFocalUni); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 715 | |
| 716 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
cdalton | 8528541 | 2016-02-18 12:37:07 -0800 | [diff] [blame] | 717 | GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder; |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 718 | SkString coords2DString = fragBuilder->ensureFSCoords2D(args.fCoords, 0); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 719 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 720 | |
| 721 | // t = p.x * focalX + length(p) |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 722 | fragBuilder->codeAppendf("\tfloat %s = %s.x * %s + length(%s);\n", tName.c_str(), |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 723 | coords2D, focal.c_str(), coords2D); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 724 | |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 725 | this->emitColor(fragBuilder, |
| 726 | uniformHandler, |
egdaniel | a2e3e0f | 2015-11-19 07:23:45 -0800 | [diff] [blame] | 727 | args.fGLSLCaps, |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 728 | ge, |
| 729 | tName.c_str(), |
| 730 | args.fOutputColor, |
| 731 | args.fInputColor, |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 732 | args.fSamplers); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 733 | } |
| 734 | |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 735 | void GLFocalInside2PtConicalEffect::onSetData(const GrGLSLProgramDataManager& pdman, |
| 736 | const GrProcessor& processor) { |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 737 | INHERITED::onSetData(pdman, processor); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 738 | const FocalInside2PtConicalEffect& data = processor.cast<FocalInside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 739 | SkScalar focal = data.focal(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 740 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 741 | if (fCachedFocal != focal) { |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 742 | pdman.set1f(fFocalUni, SkScalarToFloat(focal)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 743 | fCachedFocal = focal; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 744 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 745 | } |
| 746 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 747 | void GLFocalInside2PtConicalEffect::GenKey(const GrProcessor& processor, |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 748 | const GrGLSLCaps&, GrProcessorKeyBuilder* b) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 749 | b->add32(GenBaseGradientKey(processor)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 750 | } |
| 751 | |
| 752 | ////////////////////////////////////////////////////////////////////////////// |
| 753 | // Circle Conical Gradients |
| 754 | ////////////////////////////////////////////////////////////////////////////// |
| 755 | |
| 756 | struct CircleConicalInfo { |
| 757 | SkPoint fCenterEnd; |
| 758 | SkScalar fA; |
| 759 | SkScalar fB; |
| 760 | SkScalar fC; |
| 761 | }; |
| 762 | |
| 763 | // Returns focal distance along x-axis in transformed coords |
| 764 | static ConicalType set_matrix_circle_conical(const SkTwoPointConicalGradient& shader, |
| 765 | SkMatrix* invLMatrix, CircleConicalInfo* info) { |
| 766 | // Inverse of the current local matrix is passed in then, |
| 767 | // translate and scale such that start circle is on the origin and has radius 1 |
| 768 | const SkPoint& centerStart = shader.getStartCenter(); |
| 769 | const SkPoint& centerEnd = shader.getEndCenter(); |
| 770 | SkScalar radiusStart = shader.getStartRadius(); |
| 771 | SkScalar radiusEnd = shader.getEndRadius(); |
| 772 | |
| 773 | SkMatrix matrix; |
| 774 | |
| 775 | matrix.setTranslate(-centerStart.fX, -centerStart.fY); |
| 776 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 777 | SkScalar invStartRad = 1.f / radiusStart; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 778 | matrix.postScale(invStartRad, invStartRad); |
| 779 | |
| 780 | radiusEnd /= radiusStart; |
| 781 | |
| 782 | SkPoint centerEndTrans; |
| 783 | matrix.mapPoints(¢erEndTrans, ¢erEnd, 1); |
| 784 | |
| 785 | SkScalar A = centerEndTrans.fX * centerEndTrans.fX + centerEndTrans.fY * centerEndTrans.fY |
| 786 | - radiusEnd * radiusEnd + 2 * radiusEnd - 1; |
| 787 | |
| 788 | // Check to see if start circle is inside end circle with edges touching. |
| 789 | // 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] | 790 | // to the edge shader. kEdgeErrorTol = 5 * kErrorTol was picked after manual testing |
| 791 | // so that C = 1 / A is stable, and the linear approximation used in the Edge shader is |
| 792 | // still accurate. |
| 793 | if (SkScalarAbs(A) < kEdgeErrorTol) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 794 | return kEdge_ConicalType; |
| 795 | } |
| 796 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 797 | SkScalar C = 1.f / A; |
| 798 | SkScalar B = (radiusEnd - 1.f) * C; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 799 | |
| 800 | matrix.postScale(C, C); |
| 801 | |
| 802 | invLMatrix->postConcat(matrix); |
| 803 | |
| 804 | info->fCenterEnd = centerEndTrans; |
| 805 | info->fA = A; |
| 806 | info->fB = B; |
| 807 | info->fC = C; |
| 808 | |
| 809 | // 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] | 810 | if (A < 0.f) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 811 | return kInside_ConicalType; |
| 812 | } |
| 813 | return kOutside_ConicalType; |
| 814 | } |
| 815 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 816 | class CircleInside2PtConicalEffect : public GrGradientEffect { |
| 817 | public: |
| 818 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 819 | static GrFragmentProcessor* Create(GrContext* ctx, |
| 820 | const SkTwoPointConicalGradient& shader, |
| 821 | const SkMatrix& matrix, |
| 822 | SkShader::TileMode tm, |
| 823 | const CircleConicalInfo& info) { |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 824 | return new CircleInside2PtConicalEffect(ctx, shader, matrix, tm, info); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 825 | } |
| 826 | |
| 827 | virtual ~CircleInside2PtConicalEffect() {} |
| 828 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 829 | const char* name() const override { return "Two-Point Conical Gradient Inside"; } |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 830 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 831 | SkScalar centerX() const { return fInfo.fCenterEnd.fX; } |
| 832 | SkScalar centerY() const { return fInfo.fCenterEnd.fY; } |
| 833 | SkScalar A() const { return fInfo.fA; } |
| 834 | SkScalar B() const { return fInfo.fB; } |
| 835 | SkScalar C() const { return fInfo.fC; } |
| 836 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 837 | private: |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 838 | GrGLSLFragmentProcessor* onCreateGLSLInstance() const override; |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 839 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 840 | virtual void onGetGLSLProcessorKey(const GrGLSLCaps& caps, |
| 841 | GrProcessorKeyBuilder* b) const override; |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame] | 842 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 843 | bool onIsEqual(const GrFragmentProcessor& sBase) const override { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 844 | const CircleInside2PtConicalEffect& s = sBase.cast<CircleInside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 845 | return (INHERITED::onIsEqual(sBase) && |
| 846 | this->fInfo.fCenterEnd == s.fInfo.fCenterEnd && |
| 847 | this->fInfo.fA == s.fInfo.fA && |
| 848 | this->fInfo.fB == s.fInfo.fB && |
| 849 | this->fInfo.fC == s.fInfo.fC); |
| 850 | } |
| 851 | |
| 852 | CircleInside2PtConicalEffect(GrContext* ctx, |
| 853 | const SkTwoPointConicalGradient& shader, |
| 854 | const SkMatrix& matrix, |
| 855 | SkShader::TileMode tm, |
| 856 | const CircleConicalInfo& info) |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 857 | : INHERITED(ctx, shader, matrix, tm), fInfo(info) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 858 | this->initClassID<CircleInside2PtConicalEffect>(); |
| 859 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 860 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 861 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 862 | |
| 863 | const CircleConicalInfo fInfo; |
| 864 | |
| 865 | typedef GrGradientEffect INHERITED; |
| 866 | }; |
| 867 | |
| 868 | class GLCircleInside2PtConicalEffect : public GrGLGradientEffect { |
| 869 | public: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 870 | GLCircleInside2PtConicalEffect(const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 871 | virtual ~GLCircleInside2PtConicalEffect() {} |
| 872 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 873 | virtual void emitCode(EmitArgs&) override; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 874 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 875 | static void GenKey(const GrProcessor&, const GrGLSLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 876 | |
| 877 | protected: |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 878 | void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override; |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 879 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 880 | UniformHandle fCenterUni; |
| 881 | UniformHandle fParamUni; |
| 882 | |
| 883 | const char* fVSVaryingName; |
| 884 | const char* fFSVaryingName; |
| 885 | |
| 886 | // @{ |
| 887 | /// Values last uploaded as uniforms |
| 888 | |
| 889 | SkScalar fCachedCenterX; |
| 890 | SkScalar fCachedCenterY; |
| 891 | SkScalar fCachedA; |
| 892 | SkScalar fCachedB; |
| 893 | SkScalar fCachedC; |
| 894 | |
| 895 | // @} |
| 896 | |
| 897 | private: |
| 898 | typedef GrGLGradientEffect INHERITED; |
| 899 | |
| 900 | }; |
| 901 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 902 | void CircleInside2PtConicalEffect::onGetGLSLProcessorKey(const GrGLSLCaps& caps, |
| 903 | GrProcessorKeyBuilder* b) const { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 904 | GLCircleInside2PtConicalEffect::GenKey(*this, caps, b); |
| 905 | } |
| 906 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 907 | GrGLSLFragmentProcessor* CircleInside2PtConicalEffect::onCreateGLSLInstance() const { |
halcanary | 385fe4d | 2015-08-26 13:07:48 -0700 | [diff] [blame] | 908 | return new GLCircleInside2PtConicalEffect(*this); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 909 | } |
| 910 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 911 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(CircleInside2PtConicalEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 912 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 913 | /* |
| 914 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 915 | */ |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 916 | const GrFragmentProcessor* CircleInside2PtConicalEffect::TestCreate(GrProcessorTestData* d) { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 917 | SkPoint center1 = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()}; |
| 918 | 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] | 919 | SkPoint center2; |
| 920 | SkScalar radius2; |
| 921 | do { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 922 | center2.set(d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 923 | // Below makes sure that circle one is contained within circle two |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 924 | SkScalar increase = d->fRandom->nextUScalar1(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 925 | SkPoint diff = center2 - center1; |
| 926 | SkScalar diffLen = diff.length(); |
| 927 | radius2 = radius1 + diffLen + increase; |
| 928 | // If the circles are identical the factory will give us an empty shader. |
| 929 | } while (radius1 == radius2 && center1 == center2); |
| 930 | |
| 931 | SkColor colors[kMaxRandomGradientColors]; |
| 932 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 933 | SkScalar* stops = stopsArray; |
| 934 | SkShader::TileMode tm; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 935 | int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tm); |
reed | 8a21c9f | 2016-03-08 18:50:00 -0800 | [diff] [blame] | 936 | auto shader = SkGradientShader::MakeTwoPointConical(center1, radius1, center2, radius2, |
| 937 | colors, stops, colorCount, tm); |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 938 | const GrFragmentProcessor* fp = shader->asFragmentProcessor(d->fContext, |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 939 | GrTest::TestMatrix(d->fRandom), NULL, kNone_SkFilterQuality); |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 940 | GrAlwaysAssert(fp); |
joshualitt | 8ca93e7 | 2015-07-08 06:51:43 -0700 | [diff] [blame] | 941 | return fp; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 942 | } |
| 943 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 944 | GLCircleInside2PtConicalEffect::GLCircleInside2PtConicalEffect(const GrProcessor& processor) |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 945 | : fVSVaryingName(nullptr) |
| 946 | , fFSVaryingName(nullptr) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 947 | , fCachedCenterX(SK_ScalarMax) |
| 948 | , fCachedCenterY(SK_ScalarMax) |
| 949 | , fCachedA(SK_ScalarMax) |
| 950 | , fCachedB(SK_ScalarMax) |
| 951 | , fCachedC(SK_ScalarMax) {} |
| 952 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 953 | void GLCircleInside2PtConicalEffect::emitCode(EmitArgs& args) { |
| 954 | const CircleInside2PtConicalEffect& ge = args.fFp.cast<CircleInside2PtConicalEffect>(); |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 955 | GrGLSLUniformHandler* uniformHandler = args.fUniformHandler; |
| 956 | this->emitUniforms(uniformHandler, ge); |
cdalton | 5e58cee | 2016-02-11 12:49:47 -0800 | [diff] [blame] | 957 | fCenterUni = uniformHandler->addUniform(kFragment_GrShaderFlag, |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 958 | kVec2f_GrSLType, kDefault_GrSLPrecision, |
| 959 | "Conical2FSCenter"); |
cdalton | 5e58cee | 2016-02-11 12:49:47 -0800 | [diff] [blame] | 960 | fParamUni = uniformHandler->addUniform(kFragment_GrShaderFlag, |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 961 | kVec3f_GrSLType, kDefault_GrSLPrecision, |
| 962 | "Conical2FSParams"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 963 | SkString tName("t"); |
| 964 | |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 965 | GrGLSLShaderVar center = uniformHandler->getUniformVariable(fCenterUni); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 966 | // params.x = A |
| 967 | // params.y = B |
| 968 | // params.z = C |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 969 | GrGLSLShaderVar params = uniformHandler->getUniformVariable(fParamUni); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 970 | |
| 971 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
cdalton | 8528541 | 2016-02-18 12:37:07 -0800 | [diff] [blame] | 972 | GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder; |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 973 | SkString coords2DString = fragBuilder->ensureFSCoords2D(args.fCoords, 0); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 974 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 975 | |
| 976 | // p = coords2D |
| 977 | // e = center end |
| 978 | // r = radius end |
| 979 | // A = dot(e, e) - r^2 + 2 * r - 1 |
| 980 | // B = (r -1) / A |
| 981 | // C = 1 / A |
| 982 | // d = dot(e, p) + B |
| 983 | // t = d +/- sqrt(d^2 - A * dot(p, p) + C) |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 984 | fragBuilder->codeAppendf("\tfloat pDotp = dot(%s, %s);\n", coords2D, coords2D); |
| 985 | fragBuilder->codeAppendf("\tfloat d = dot(%s, %s) + %s.y;\n", coords2D, center.c_str(), |
| 986 | params.c_str()); |
| 987 | fragBuilder->codeAppendf("\tfloat %s = d + sqrt(d * d - %s.x * pDotp + %s.z);\n", |
| 988 | tName.c_str(), params.c_str(), params.c_str()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 989 | |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 990 | this->emitColor(fragBuilder, |
| 991 | uniformHandler, |
egdaniel | a2e3e0f | 2015-11-19 07:23:45 -0800 | [diff] [blame] | 992 | args.fGLSLCaps, |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 993 | ge, |
| 994 | tName.c_str(), |
| 995 | args.fOutputColor, |
| 996 | args.fInputColor, |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 997 | args.fSamplers); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 998 | } |
| 999 | |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 1000 | void GLCircleInside2PtConicalEffect::onSetData(const GrGLSLProgramDataManager& pdman, |
| 1001 | const GrProcessor& processor) { |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 1002 | INHERITED::onSetData(pdman, processor); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1003 | const CircleInside2PtConicalEffect& data = processor.cast<CircleInside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1004 | SkScalar centerX = data.centerX(); |
| 1005 | SkScalar centerY = data.centerY(); |
| 1006 | SkScalar A = data.A(); |
| 1007 | SkScalar B = data.B(); |
| 1008 | SkScalar C = data.C(); |
| 1009 | |
| 1010 | if (fCachedCenterX != centerX || fCachedCenterY != centerY || |
| 1011 | fCachedA != A || fCachedB != B || fCachedC != C) { |
| 1012 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 1013 | pdman.set2f(fCenterUni, SkScalarToFloat(centerX), SkScalarToFloat(centerY)); |
| 1014 | pdman.set3f(fParamUni, SkScalarToFloat(A), SkScalarToFloat(B), SkScalarToFloat(C)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1015 | |
| 1016 | fCachedCenterX = centerX; |
| 1017 | fCachedCenterY = centerY; |
| 1018 | fCachedA = A; |
| 1019 | fCachedB = B; |
| 1020 | fCachedC = C; |
| 1021 | } |
| 1022 | } |
| 1023 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1024 | void GLCircleInside2PtConicalEffect::GenKey(const GrProcessor& processor, |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 1025 | const GrGLSLCaps&, GrProcessorKeyBuilder* b) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1026 | b->add32(GenBaseGradientKey(processor)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1027 | } |
| 1028 | |
| 1029 | ////////////////////////////////////////////////////////////////////////////// |
| 1030 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1031 | class CircleOutside2PtConicalEffect : public GrGradientEffect { |
| 1032 | public: |
| 1033 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1034 | static GrFragmentProcessor* Create(GrContext* ctx, |
| 1035 | const SkTwoPointConicalGradient& shader, |
| 1036 | const SkMatrix& matrix, |
| 1037 | SkShader::TileMode tm, |
| 1038 | const CircleConicalInfo& info) { |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 1039 | return new CircleOutside2PtConicalEffect(ctx, shader, matrix, tm, info); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1040 | } |
| 1041 | |
| 1042 | virtual ~CircleOutside2PtConicalEffect() {} |
| 1043 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 1044 | const char* name() const override { return "Two-Point Conical Gradient Outside"; } |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 1045 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1046 | SkScalar centerX() const { return fInfo.fCenterEnd.fX; } |
| 1047 | SkScalar centerY() const { return fInfo.fCenterEnd.fY; } |
| 1048 | SkScalar A() const { return fInfo.fA; } |
| 1049 | SkScalar B() const { return fInfo.fB; } |
| 1050 | SkScalar C() const { return fInfo.fC; } |
| 1051 | SkScalar tLimit() const { return fTLimit; } |
| 1052 | bool isFlipped() const { return fIsFlipped; } |
| 1053 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1054 | private: |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 1055 | GrGLSLFragmentProcessor* onCreateGLSLInstance() const override; |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 1056 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 1057 | void onGetGLSLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override; |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame] | 1058 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 1059 | bool onIsEqual(const GrFragmentProcessor& sBase) const override { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 1060 | const CircleOutside2PtConicalEffect& s = sBase.cast<CircleOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1061 | return (INHERITED::onIsEqual(sBase) && |
| 1062 | this->fInfo.fCenterEnd == s.fInfo.fCenterEnd && |
| 1063 | this->fInfo.fA == s.fInfo.fA && |
| 1064 | this->fInfo.fB == s.fInfo.fB && |
| 1065 | this->fInfo.fC == s.fInfo.fC && |
| 1066 | this->fTLimit == s.fTLimit && |
| 1067 | this->fIsFlipped == s.fIsFlipped); |
| 1068 | } |
| 1069 | |
| 1070 | CircleOutside2PtConicalEffect(GrContext* ctx, |
| 1071 | const SkTwoPointConicalGradient& shader, |
| 1072 | const SkMatrix& matrix, |
| 1073 | SkShader::TileMode tm, |
| 1074 | const CircleConicalInfo& info) |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 1075 | : INHERITED(ctx, shader, matrix, tm), fInfo(info) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 1076 | this->initClassID<CircleOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1077 | if (shader.getStartRadius() != shader.getEndRadius()) { |
reed | 80ea19c | 2015-05-12 10:37:34 -0700 | [diff] [blame] | 1078 | fTLimit = shader.getStartRadius() / (shader.getStartRadius() - shader.getEndRadius()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1079 | } else { |
| 1080 | fTLimit = SK_ScalarMin; |
| 1081 | } |
| 1082 | |
| 1083 | fIsFlipped = shader.isFlippedGrad(); |
| 1084 | } |
| 1085 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1086 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1087 | |
| 1088 | const CircleConicalInfo fInfo; |
| 1089 | SkScalar fTLimit; |
| 1090 | bool fIsFlipped; |
| 1091 | |
| 1092 | typedef GrGradientEffect INHERITED; |
| 1093 | }; |
| 1094 | |
| 1095 | class GLCircleOutside2PtConicalEffect : public GrGLGradientEffect { |
| 1096 | public: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 1097 | GLCircleOutside2PtConicalEffect(const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1098 | virtual ~GLCircleOutside2PtConicalEffect() {} |
| 1099 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 1100 | virtual void emitCode(EmitArgs&) override; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1101 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 1102 | static void GenKey(const GrProcessor&, const GrGLSLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1103 | |
| 1104 | protected: |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 1105 | void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override; |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 1106 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1107 | UniformHandle fCenterUni; |
| 1108 | UniformHandle fParamUni; |
| 1109 | |
| 1110 | const char* fVSVaryingName; |
| 1111 | const char* fFSVaryingName; |
| 1112 | |
| 1113 | bool fIsFlipped; |
| 1114 | |
| 1115 | // @{ |
| 1116 | /// Values last uploaded as uniforms |
| 1117 | |
| 1118 | SkScalar fCachedCenterX; |
| 1119 | SkScalar fCachedCenterY; |
| 1120 | SkScalar fCachedA; |
| 1121 | SkScalar fCachedB; |
| 1122 | SkScalar fCachedC; |
| 1123 | SkScalar fCachedTLimit; |
| 1124 | |
| 1125 | // @} |
| 1126 | |
| 1127 | private: |
| 1128 | typedef GrGLGradientEffect INHERITED; |
| 1129 | |
| 1130 | }; |
| 1131 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 1132 | void CircleOutside2PtConicalEffect::onGetGLSLProcessorKey(const GrGLSLCaps& caps, |
| 1133 | GrProcessorKeyBuilder* b) const { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 1134 | GLCircleOutside2PtConicalEffect::GenKey(*this, caps, b); |
| 1135 | } |
| 1136 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 1137 | GrGLSLFragmentProcessor* CircleOutside2PtConicalEffect::onCreateGLSLInstance() const { |
halcanary | 385fe4d | 2015-08-26 13:07:48 -0700 | [diff] [blame] | 1138 | return new GLCircleOutside2PtConicalEffect(*this); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1139 | } |
| 1140 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1141 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(CircleOutside2PtConicalEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1142 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 1143 | /* |
| 1144 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 1145 | */ |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 1146 | const GrFragmentProcessor* CircleOutside2PtConicalEffect::TestCreate(GrProcessorTestData* d) { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 1147 | SkPoint center1 = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()}; |
| 1148 | 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] | 1149 | SkPoint center2; |
| 1150 | SkScalar radius2; |
| 1151 | SkScalar diffLen; |
| 1152 | do { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 1153 | center2.set(d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1154 | // If the circles share a center than we can't be in the outside case |
| 1155 | } while (center1 == center2); |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 1156 | SkPoint diff = center2 - center1; |
| 1157 | diffLen = diff.length(); |
| 1158 | // Below makes sure that circle one is not contained within circle two |
| 1159 | // and have radius2 >= radius to match sorting on cpu side |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 1160 | radius2 = radius1 + d->fRandom->nextRangeF(0.f, diffLen); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1161 | |
| 1162 | SkColor colors[kMaxRandomGradientColors]; |
| 1163 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 1164 | SkScalar* stops = stopsArray; |
| 1165 | SkShader::TileMode tm; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 1166 | int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tm); |
reed | 8a21c9f | 2016-03-08 18:50:00 -0800 | [diff] [blame] | 1167 | auto shader = SkGradientShader::MakeTwoPointConical(center1, radius1, center2, radius2, |
| 1168 | colors, stops, colorCount, tm); |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 1169 | const GrFragmentProcessor* fp = shader->asFragmentProcessor( |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 1170 | d->fContext,GrTest::TestMatrix(d->fRandom), NULL, kNone_SkFilterQuality); |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 1171 | GrAlwaysAssert(fp); |
joshualitt | 8ca93e7 | 2015-07-08 06:51:43 -0700 | [diff] [blame] | 1172 | return fp; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1173 | } |
| 1174 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 1175 | GLCircleOutside2PtConicalEffect::GLCircleOutside2PtConicalEffect(const GrProcessor& processor) |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 1176 | : fVSVaryingName(nullptr) |
| 1177 | , fFSVaryingName(nullptr) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1178 | , fCachedCenterX(SK_ScalarMax) |
| 1179 | , fCachedCenterY(SK_ScalarMax) |
| 1180 | , fCachedA(SK_ScalarMax) |
| 1181 | , fCachedB(SK_ScalarMax) |
| 1182 | , fCachedC(SK_ScalarMax) |
| 1183 | , fCachedTLimit(SK_ScalarMax) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1184 | const CircleOutside2PtConicalEffect& data = processor.cast<CircleOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1185 | fIsFlipped = data.isFlipped(); |
| 1186 | } |
| 1187 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 1188 | void GLCircleOutside2PtConicalEffect::emitCode(EmitArgs& args) { |
| 1189 | const CircleOutside2PtConicalEffect& ge = args.fFp.cast<CircleOutside2PtConicalEffect>(); |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 1190 | GrGLSLUniformHandler* uniformHandler = args.fUniformHandler; |
| 1191 | this->emitUniforms(uniformHandler, ge); |
cdalton | 5e58cee | 2016-02-11 12:49:47 -0800 | [diff] [blame] | 1192 | fCenterUni = uniformHandler->addUniform(kFragment_GrShaderFlag, |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 1193 | kVec2f_GrSLType, kDefault_GrSLPrecision, |
| 1194 | "Conical2FSCenter"); |
cdalton | 5e58cee | 2016-02-11 12:49:47 -0800 | [diff] [blame] | 1195 | fParamUni = uniformHandler->addUniform(kFragment_GrShaderFlag, |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 1196 | kVec4f_GrSLType, kDefault_GrSLPrecision, |
| 1197 | "Conical2FSParams"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1198 | SkString tName("t"); |
| 1199 | |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 1200 | GrGLSLShaderVar center = uniformHandler->getUniformVariable(fCenterUni); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1201 | // params.x = A |
| 1202 | // params.y = B |
| 1203 | // params.z = C |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 1204 | GrGLSLShaderVar params = uniformHandler->getUniformVariable(fParamUni); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1205 | |
| 1206 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
cdalton | 8528541 | 2016-02-18 12:37:07 -0800 | [diff] [blame] | 1207 | GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder; |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 1208 | SkString coords2DString = fragBuilder->ensureFSCoords2D(args.fCoords, 0); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 1209 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1210 | |
| 1211 | // output will default to transparent black (we simply won't write anything |
| 1212 | // else to it if invalid, instead of discarding or returning prematurely) |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 1213 | fragBuilder->codeAppendf("\t%s = vec4(0.0,0.0,0.0,0.0);\n", args.fOutputColor); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1214 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1215 | // p = coords2D |
| 1216 | // e = center end |
| 1217 | // r = radius end |
| 1218 | // A = dot(e, e) - r^2 + 2 * r - 1 |
| 1219 | // B = (r -1) / A |
| 1220 | // C = 1 / A |
| 1221 | // d = dot(e, p) + B |
| 1222 | // t = d +/- sqrt(d^2 - A * dot(p, p) + C) |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1223 | |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 1224 | fragBuilder->codeAppendf("\tfloat pDotp = dot(%s, %s);\n", coords2D, coords2D); |
| 1225 | fragBuilder->codeAppendf("\tfloat d = dot(%s, %s) + %s.y;\n", coords2D, center.c_str(), |
| 1226 | params.c_str()); |
| 1227 | fragBuilder->codeAppendf("\tfloat deter = d * d - %s.x * pDotp + %s.z;\n", params.c_str(), |
| 1228 | params.c_str()); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1229 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1230 | // Must check to see if we flipped the circle order (to make sure start radius < end radius) |
| 1231 | // If so we must also flip sign on sqrt |
| 1232 | if (!fIsFlipped) { |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 1233 | fragBuilder->codeAppendf("\tfloat %s = d + sqrt(deter);\n", tName.c_str()); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1234 | } else { |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 1235 | fragBuilder->codeAppendf("\tfloat %s = d - sqrt(deter);\n", tName.c_str()); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1236 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1237 | |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 1238 | fragBuilder->codeAppendf("\tif (%s >= %s.w && deter >= 0.0) {\n", |
| 1239 | tName.c_str(), params.c_str()); |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 1240 | fragBuilder->codeAppend("\t\t"); |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 1241 | this->emitColor(fragBuilder, |
| 1242 | uniformHandler, |
egdaniel | a2e3e0f | 2015-11-19 07:23:45 -0800 | [diff] [blame] | 1243 | args.fGLSLCaps, |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 1244 | ge, |
| 1245 | tName.c_str(), |
| 1246 | args.fOutputColor, |
| 1247 | args.fInputColor, |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 1248 | args.fSamplers); |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 1249 | fragBuilder->codeAppend("\t}\n"); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1250 | } |
| 1251 | |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 1252 | void GLCircleOutside2PtConicalEffect::onSetData(const GrGLSLProgramDataManager& pdman, |
| 1253 | const GrProcessor& processor) { |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 1254 | INHERITED::onSetData(pdman, processor); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1255 | const CircleOutside2PtConicalEffect& data = processor.cast<CircleOutside2PtConicalEffect>(); |
commit-bot@chromium.org | 44d83c1 | 2014-04-21 13:10:25 +0000 | [diff] [blame] | 1256 | SkASSERT(data.isFlipped() == fIsFlipped); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1257 | SkScalar centerX = data.centerX(); |
| 1258 | SkScalar centerY = data.centerY(); |
| 1259 | SkScalar A = data.A(); |
| 1260 | SkScalar B = data.B(); |
| 1261 | SkScalar C = data.C(); |
| 1262 | SkScalar tLimit = data.tLimit(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1263 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1264 | if (fCachedCenterX != centerX || fCachedCenterY != centerY || |
| 1265 | fCachedA != A || fCachedB != B || fCachedC != C || fCachedTLimit != tLimit) { |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1266 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 1267 | pdman.set2f(fCenterUni, SkScalarToFloat(centerX), SkScalarToFloat(centerY)); |
| 1268 | pdman.set4f(fParamUni, SkScalarToFloat(A), SkScalarToFloat(B), SkScalarToFloat(C), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1269 | SkScalarToFloat(tLimit)); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1270 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1271 | fCachedCenterX = centerX; |
| 1272 | fCachedCenterY = centerY; |
| 1273 | fCachedA = A; |
| 1274 | fCachedB = B; |
| 1275 | fCachedC = C; |
| 1276 | fCachedTLimit = tLimit; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1277 | } |
| 1278 | } |
| 1279 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1280 | void GLCircleOutside2PtConicalEffect::GenKey(const GrProcessor& processor, |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 1281 | const GrGLSLCaps&, GrProcessorKeyBuilder* b) { |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 1282 | uint32_t* key = b->add32n(2); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1283 | key[0] = GenBaseGradientKey(processor); |
| 1284 | key[1] = processor.cast<CircleOutside2PtConicalEffect>().isFlipped(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1285 | } |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1286 | |
| 1287 | ////////////////////////////////////////////////////////////////////////////// |
| 1288 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1289 | GrFragmentProcessor* Gr2PtConicalGradientEffect::Create(GrContext* ctx, |
| 1290 | const SkTwoPointConicalGradient& shader, |
| 1291 | SkShader::TileMode tm, |
| 1292 | const SkMatrix* localMatrix) { |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1293 | SkMatrix matrix; |
| 1294 | if (!shader.getLocalMatrix().invert(&matrix)) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 1295 | return nullptr; |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1296 | } |
commit-bot@chromium.org | 96fb748 | 2014-05-09 20:28:11 +0000 | [diff] [blame] | 1297 | if (localMatrix) { |
| 1298 | SkMatrix inv; |
| 1299 | if (!localMatrix->invert(&inv)) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 1300 | return nullptr; |
commit-bot@chromium.org | 96fb748 | 2014-05-09 20:28:11 +0000 | [diff] [blame] | 1301 | } |
| 1302 | matrix.postConcat(inv); |
| 1303 | } |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1304 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1305 | if (shader.getStartRadius() < kErrorTol) { |
| 1306 | SkScalar focalX; |
| 1307 | ConicalType type = set_matrix_focal_conical(shader, &matrix, &focalX); |
| 1308 | if (type == kInside_ConicalType) { |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 1309 | return FocalInside2PtConicalEffect::Create(ctx, shader, matrix, tm, focalX); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1310 | } else if(type == kEdge_ConicalType) { |
| 1311 | set_matrix_edge_conical(shader, &matrix); |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 1312 | return Edge2PtConicalEffect::Create(ctx, shader, matrix, tm); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1313 | } else { |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 1314 | return FocalOutside2PtConicalEffect::Create(ctx, shader, matrix, tm, focalX); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1315 | } |
| 1316 | } |
| 1317 | |
| 1318 | CircleConicalInfo info; |
| 1319 | ConicalType type = set_matrix_circle_conical(shader, &matrix, &info); |
| 1320 | |
| 1321 | if (type == kInside_ConicalType) { |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 1322 | return CircleInside2PtConicalEffect::Create(ctx, shader, matrix, tm, info); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1323 | } else if (type == kEdge_ConicalType) { |
| 1324 | set_matrix_edge_conical(shader, &matrix); |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 1325 | return Edge2PtConicalEffect::Create(ctx, shader, matrix, tm); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1326 | } else { |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 1327 | return CircleOutside2PtConicalEffect::Create(ctx, shader, matrix, tm, info); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1328 | } |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1329 | } |
| 1330 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1331 | #endif |