commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 2 | /* |
| 3 | * Copyright 2014 Google Inc. |
| 4 | * |
| 5 | * Use of this source code is governed by a BSD-style license that can be |
| 6 | * found in the LICENSE file. |
| 7 | */ |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 8 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 9 | #include "SkTwoPointConicalGradient_gpu.h" |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 10 | |
| 11 | #include "SkTwoPointConicalGradient.h" |
| 12 | |
commit-bot@chromium.org | ef93d29 | 2014-04-10 15:37:52 +0000 | [diff] [blame] | 13 | #if SK_SUPPORT_GPU |
joshualitt | 8ca93e7 | 2015-07-08 06:51:43 -0700 | [diff] [blame] | 14 | #include "GrPaint.h" |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 15 | #include "gl/builders/GrGLProgramBuilder.h" |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 16 | // For brevity |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 17 | typedef GrGLProgramDataManager::UniformHandle UniformHandle; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 18 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 19 | static const SkScalar kErrorTol = 0.00001f; |
egdaniel | 8405ef9 | 2014-06-09 11:57:28 -0700 | [diff] [blame] | 20 | static const SkScalar kEdgeErrorTol = 5.f * kErrorTol; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 21 | |
| 22 | /** |
| 23 | * We have three general cases for 2pt conical gradients. First we always assume that |
| 24 | * the start radius <= end radius. Our first case (kInside_) is when the start circle |
| 25 | * is completely enclosed by the end circle. The second case (kOutside_) is the case |
| 26 | * when the start circle is either completely outside the end circle or the circles |
| 27 | * overlap. The final case (kEdge_) is when the start circle is inside the end one, |
| 28 | * but the two are just barely touching at 1 point along their edges. |
| 29 | */ |
| 30 | enum ConicalType { |
| 31 | kInside_ConicalType, |
| 32 | kOutside_ConicalType, |
| 33 | kEdge_ConicalType, |
| 34 | }; |
| 35 | |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 36 | ////////////////////////////////////////////////////////////////////////////// |
| 37 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 38 | static void set_matrix_edge_conical(const SkTwoPointConicalGradient& shader, |
| 39 | SkMatrix* invLMatrix) { |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 40 | // Inverse of the current local matrix is passed in then, |
| 41 | // translate to center1, rotate so center2 is on x axis. |
| 42 | const SkPoint& center1 = shader.getStartCenter(); |
| 43 | const SkPoint& center2 = shader.getEndCenter(); |
| 44 | |
| 45 | invLMatrix->postTranslate(-center1.fX, -center1.fY); |
| 46 | |
| 47 | SkPoint diff = center2 - center1; |
| 48 | SkScalar diffLen = diff.length(); |
| 49 | if (0 != diffLen) { |
| 50 | SkScalar invDiffLen = SkScalarInvert(diffLen); |
| 51 | SkMatrix rot; |
| 52 | rot.setSinCos(-SkScalarMul(invDiffLen, diff.fY), |
| 53 | SkScalarMul(invDiffLen, diff.fX)); |
| 54 | invLMatrix->postConcat(rot); |
| 55 | } |
| 56 | } |
| 57 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 58 | class Edge2PtConicalEffect : public GrGradientEffect { |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 59 | public: |
| 60 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 61 | static GrFragmentProcessor* Create(GrContext* ctx, |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 62 | GrShaderDataManager* shaderDataManager, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 63 | const SkTwoPointConicalGradient& shader, |
| 64 | const SkMatrix& matrix, |
| 65 | SkShader::TileMode tm) { |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 66 | return SkNEW_ARGS(Edge2PtConicalEffect, (ctx, shaderDataManager, shader, matrix, tm)); |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 67 | } |
| 68 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 69 | virtual ~Edge2PtConicalEffect() {} |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 70 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 71 | const char* name() const override { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 72 | return "Two-Point Conical Gradient Edge Touching"; |
| 73 | } |
| 74 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 75 | void getGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override; |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 76 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 77 | GrGLFragmentProcessor* createGLInstance() const override; |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 78 | |
| 79 | // 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] | 80 | SkScalar center() const { return fCenterX1; } |
| 81 | SkScalar diffRadius() const { return fDiffRadius; } |
| 82 | SkScalar radius() const { return fRadius0; } |
| 83 | |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 84 | private: |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 85 | bool onIsEqual(const GrFragmentProcessor& sBase) const override { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 86 | const Edge2PtConicalEffect& s = sBase.cast<Edge2PtConicalEffect>(); |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 87 | return (INHERITED::onIsEqual(sBase) && |
| 88 | this->fCenterX1 == s.fCenterX1 && |
| 89 | this->fRadius0 == s.fRadius0 && |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 90 | this->fDiffRadius == s.fDiffRadius); |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 91 | } |
| 92 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 93 | Edge2PtConicalEffect(GrContext* ctx, |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 94 | GrShaderDataManager* shaderDataManager, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 95 | const SkTwoPointConicalGradient& shader, |
| 96 | const SkMatrix& matrix, |
| 97 | SkShader::TileMode tm) |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 98 | : INHERITED(ctx, shaderDataManager, shader, matrix, tm), |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 99 | fCenterX1(shader.getCenterX1()), |
| 100 | fRadius0(shader.getStartRadius()), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 101 | fDiffRadius(shader.getDiffRadius()){ |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 102 | this->initClassID<Edge2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 103 | // We should only be calling this shader if we are degenerate case with touching circles |
egdaniel | 8405ef9 | 2014-06-09 11:57:28 -0700 | [diff] [blame] | 104 | // When deciding if we are in edge case, we scaled by the end radius for cases when the |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 105 | // start radius was close to zero, otherwise we scaled by the start radius. In addition |
| 106 | // Our test for the edge case in set_matrix_circle_conical has a higher tolerance so we |
| 107 | // need the sqrt value below |
| 108 | SkASSERT(SkScalarAbs(SkScalarAbs(fDiffRadius) - fCenterX1) < |
| 109 | (fRadius0 < kErrorTol ? shader.getEndRadius() * kEdgeErrorTol : |
| 110 | fRadius0 * sqrt(kEdgeErrorTol))); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 111 | |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 112 | // We pass the linear part of the quadratic as a varying. |
| 113 | // float b = -2.0 * (fCenterX1 * x + fRadius0 * fDiffRadius * z) |
| 114 | fBTransform = this->getCoordTransform(); |
| 115 | SkMatrix& bMatrix = *fBTransform.accessMatrix(); |
| 116 | SkScalar r0dr = SkScalarMul(fRadius0, fDiffRadius); |
| 117 | bMatrix[SkMatrix::kMScaleX] = -2 * (SkScalarMul(fCenterX1, bMatrix[SkMatrix::kMScaleX]) + |
| 118 | SkScalarMul(r0dr, bMatrix[SkMatrix::kMPersp0])); |
| 119 | bMatrix[SkMatrix::kMSkewX] = -2 * (SkScalarMul(fCenterX1, bMatrix[SkMatrix::kMSkewX]) + |
| 120 | SkScalarMul(r0dr, bMatrix[SkMatrix::kMPersp1])); |
| 121 | bMatrix[SkMatrix::kMTransX] = -2 * (SkScalarMul(fCenterX1, bMatrix[SkMatrix::kMTransX]) + |
| 122 | SkScalarMul(r0dr, bMatrix[SkMatrix::kMPersp2])); |
| 123 | this->addCoordTransform(&fBTransform); |
| 124 | } |
| 125 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 126 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 127 | |
| 128 | // @{ |
| 129 | // Cache of values - these can change arbitrarily, EXCEPT |
| 130 | // we shouldn't change between degenerate and non-degenerate?! |
| 131 | |
| 132 | GrCoordTransform fBTransform; |
| 133 | SkScalar fCenterX1; |
| 134 | SkScalar fRadius0; |
| 135 | SkScalar fDiffRadius; |
| 136 | |
| 137 | // @} |
| 138 | |
| 139 | typedef GrGradientEffect INHERITED; |
| 140 | }; |
| 141 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 142 | class GLEdge2PtConicalEffect : public GrGLGradientEffect { |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 143 | public: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 144 | GLEdge2PtConicalEffect(const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 145 | virtual ~GLEdge2PtConicalEffect() { } |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 146 | |
joshualitt | 1598899 | 2014-10-09 15:04:05 -0700 | [diff] [blame] | 147 | virtual void emitCode(GrGLFPBuilder*, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 148 | const GrFragmentProcessor&, |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 149 | const char* outputColor, |
| 150 | const char* inputColor, |
| 151 | const TransformedCoordsArray&, |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 152 | const TextureSamplerArray&) override; |
| 153 | void setData(const GrGLProgramDataManager&, const GrProcessor&) override; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 154 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 155 | static void GenKey(const GrProcessor&, const GrGLSLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 156 | |
| 157 | protected: |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 158 | UniformHandle fParamUni; |
| 159 | |
| 160 | const char* fVSVaryingName; |
| 161 | const char* fFSVaryingName; |
| 162 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 163 | // @{ |
| 164 | /// Values last uploaded as uniforms |
| 165 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 166 | SkScalar fCachedRadius; |
| 167 | SkScalar fCachedDiffRadius; |
| 168 | |
| 169 | // @} |
| 170 | |
| 171 | private: |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 172 | typedef GrGLGradientEffect INHERITED; |
| 173 | |
| 174 | }; |
| 175 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 176 | void Edge2PtConicalEffect::getGLProcessorKey(const GrGLSLCaps& caps, |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 177 | GrProcessorKeyBuilder* b) const { |
| 178 | GLEdge2PtConicalEffect::GenKey(*this, caps, b); |
| 179 | } |
| 180 | |
| 181 | GrGLFragmentProcessor* Edge2PtConicalEffect::createGLInstance() const { |
| 182 | return SkNEW_ARGS(GLEdge2PtConicalEffect, (*this)); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 183 | } |
skia.committer@gmail.com | 221b911 | 2014-04-04 03:04:32 +0000 | [diff] [blame] | 184 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 185 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(Edge2PtConicalEffect); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 186 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 187 | /* |
| 188 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 189 | */ |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame^] | 190 | GrFragmentProcessor* Edge2PtConicalEffect::TestCreate(GrProcessorTestData* d) { |
| 191 | SkPoint center1 = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()}; |
| 192 | SkScalar radius1 = d->fRandom->nextUScalar1(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 193 | SkPoint center2; |
| 194 | SkScalar radius2; |
| 195 | do { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame^] | 196 | center2.set(d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 197 | // If the circles are identical the factory will give us an empty shader. |
| 198 | // This will happen if we pick identical centers |
| 199 | } while (center1 == center2); |
| 200 | |
| 201 | // Below makes sure that circle one is contained within circle two |
| 202 | // and both circles are touching on an edge |
| 203 | SkPoint diff = center2 - center1; |
| 204 | SkScalar diffLen = diff.length(); |
| 205 | radius2 = radius1 + diffLen; |
| 206 | |
| 207 | SkColor colors[kMaxRandomGradientColors]; |
| 208 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 209 | SkScalar* stops = stopsArray; |
| 210 | SkShader::TileMode tm; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame^] | 211 | int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tm); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 212 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 213 | center2, radius2, |
| 214 | colors, stops, colorCount, |
| 215 | tm)); |
| 216 | SkPaint paint; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 217 | GrFragmentProcessor* fp; |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 218 | GrColor paintColor; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame^] | 219 | SkAssertResult(shader->asFragmentProcessor(d->fContext, paint, |
| 220 | GrTest::TestMatrix(d->fRandom), NULL, |
| 221 | &paintColor, d->fShaderDataManager, &fp)); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 222 | return fp; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 223 | } |
| 224 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 225 | GLEdge2PtConicalEffect::GLEdge2PtConicalEffect(const GrProcessor&) |
| 226 | : fVSVaryingName(NULL) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 227 | , fFSVaryingName(NULL) |
| 228 | , fCachedRadius(-SK_ScalarMax) |
| 229 | , fCachedDiffRadius(-SK_ScalarMax) {} |
| 230 | |
joshualitt | 1598899 | 2014-10-09 15:04:05 -0700 | [diff] [blame] | 231 | void GLEdge2PtConicalEffect::emitCode(GrGLFPBuilder* builder, |
joshualitt | 60030bc | 2014-11-25 14:21:55 -0800 | [diff] [blame] | 232 | const GrFragmentProcessor& fp, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 233 | const char* outputColor, |
| 234 | const char* inputColor, |
| 235 | const TransformedCoordsArray& coords, |
| 236 | const TextureSamplerArray& samplers) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 237 | const Edge2PtConicalEffect& ge = fp.cast<Edge2PtConicalEffect>(); |
joshualitt | 60030bc | 2014-11-25 14:21:55 -0800 | [diff] [blame] | 238 | this->emitUniforms(builder, ge); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 239 | fParamUni = builder->addUniformArray(GrGLProgramBuilder::kFragment_Visibility, |
bsalomon | 422f56f | 2014-12-09 10:18:12 -0800 | [diff] [blame] | 240 | kFloat_GrSLType, kDefault_GrSLPrecision, |
| 241 | "Conical2FSParams", 3); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 242 | |
| 243 | SkString cName("c"); |
| 244 | SkString tName("t"); |
| 245 | SkString p0; // start radius |
| 246 | SkString p1; // start radius squared |
| 247 | SkString p2; // difference in radii (r1 - r0) |
| 248 | |
| 249 | builder->getUniformVariable(fParamUni).appendArrayAccess(0, &p0); |
| 250 | builder->getUniformVariable(fParamUni).appendArrayAccess(1, &p1); |
| 251 | builder->getUniformVariable(fParamUni).appendArrayAccess(2, &p2); |
| 252 | |
| 253 | // We interpolate the linear component in coords[1]. |
joshualitt | 23e280d | 2014-09-18 12:26:38 -0700 | [diff] [blame] | 254 | SkASSERT(coords[0].getType() == coords[1].getType()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 255 | const char* coords2D; |
| 256 | SkString bVar; |
egdaniel | 29bee0f | 2015-04-29 11:54:42 -0700 | [diff] [blame] | 257 | GrGLFragmentBuilder* fsBuilder = builder->getFragmentShaderBuilder(); |
joshualitt | 23e280d | 2014-09-18 12:26:38 -0700 | [diff] [blame] | 258 | if (kVec3f_GrSLType == coords[0].getType()) { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 259 | fsBuilder->codeAppendf("\tvec3 interpolants = vec3(%s.xy / %s.z, %s.x / %s.z);\n", |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 260 | coords[0].c_str(), coords[0].c_str(), coords[1].c_str(), |
| 261 | coords[1].c_str()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 262 | coords2D = "interpolants.xy"; |
| 263 | bVar = "interpolants.z"; |
| 264 | } else { |
| 265 | coords2D = coords[0].c_str(); |
| 266 | bVar.printf("%s.x", coords[1].c_str()); |
| 267 | } |
| 268 | |
| 269 | // output will default to transparent black (we simply won't write anything |
| 270 | // else to it if invalid, instead of discarding or returning prematurely) |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 271 | fsBuilder->codeAppendf("\t%s = vec4(0.0,0.0,0.0,0.0);\n", outputColor); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 272 | |
| 273 | // c = (x^2)+(y^2) - params[1] |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 274 | fsBuilder->codeAppendf("\tfloat %s = dot(%s, %s) - %s;\n", |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 275 | cName.c_str(), coords2D, coords2D, p1.c_str()); |
| 276 | |
| 277 | // linear case: t = -c/b |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 278 | fsBuilder->codeAppendf("\tfloat %s = -(%s / %s);\n", tName.c_str(), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 279 | cName.c_str(), bVar.c_str()); |
| 280 | |
| 281 | // if r(t) > 0, then t will be the x coordinate |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 282 | fsBuilder->codeAppendf("\tif (%s * %s + %s > 0.0) {\n", tName.c_str(), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 283 | p2.c_str(), p0.c_str()); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 284 | fsBuilder->codeAppend("\t"); |
joshualitt | 60030bc | 2014-11-25 14:21:55 -0800 | [diff] [blame] | 285 | this->emitColor(builder, ge, tName.c_str(), outputColor, inputColor, samplers); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 286 | fsBuilder->codeAppend("\t}\n"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 287 | } |
| 288 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 289 | void GLEdge2PtConicalEffect::setData(const GrGLProgramDataManager& pdman, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 290 | const GrProcessor& processor) { |
| 291 | INHERITED::setData(pdman, processor); |
| 292 | const Edge2PtConicalEffect& data = processor.cast<Edge2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 293 | SkScalar radius0 = data.radius(); |
| 294 | SkScalar diffRadius = data.diffRadius(); |
| 295 | |
| 296 | if (fCachedRadius != radius0 || |
| 297 | fCachedDiffRadius != diffRadius) { |
| 298 | |
| 299 | float values[3] = { |
| 300 | SkScalarToFloat(radius0), |
| 301 | SkScalarToFloat(SkScalarMul(radius0, radius0)), |
| 302 | SkScalarToFloat(diffRadius) |
| 303 | }; |
| 304 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 305 | pdman.set1fv(fParamUni, 3, values); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 306 | fCachedRadius = radius0; |
| 307 | fCachedDiffRadius = diffRadius; |
| 308 | } |
| 309 | } |
| 310 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 311 | void GLEdge2PtConicalEffect::GenKey(const GrProcessor& processor, |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 312 | const GrGLSLCaps&, GrProcessorKeyBuilder* b) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 313 | b->add32(GenBaseGradientKey(processor)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 314 | } |
| 315 | |
| 316 | ////////////////////////////////////////////////////////////////////////////// |
| 317 | // Focal Conical Gradients |
| 318 | ////////////////////////////////////////////////////////////////////////////// |
| 319 | |
| 320 | static ConicalType set_matrix_focal_conical(const SkTwoPointConicalGradient& shader, |
| 321 | SkMatrix* invLMatrix, SkScalar* focalX) { |
| 322 | // Inverse of the current local matrix is passed in then, |
| 323 | // translate, scale, and rotate such that endCircle is unit circle on x-axis, |
| 324 | // and focal point is at the origin. |
| 325 | ConicalType conicalType; |
| 326 | const SkPoint& focal = shader.getStartCenter(); |
| 327 | const SkPoint& centerEnd = shader.getEndCenter(); |
| 328 | SkScalar radius = shader.getEndRadius(); |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 329 | SkScalar invRadius = 1.f / radius; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 330 | |
| 331 | SkMatrix matrix; |
| 332 | |
| 333 | matrix.setTranslate(-centerEnd.fX, -centerEnd.fY); |
| 334 | matrix.postScale(invRadius, invRadius); |
| 335 | |
| 336 | SkPoint focalTrans; |
| 337 | matrix.mapPoints(&focalTrans, &focal, 1); |
| 338 | *focalX = focalTrans.length(); |
| 339 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 340 | if (0.f != *focalX) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 341 | SkScalar invFocalX = SkScalarInvert(*focalX); |
| 342 | SkMatrix rot; |
| 343 | rot.setSinCos(-SkScalarMul(invFocalX, focalTrans.fY), |
| 344 | SkScalarMul(invFocalX, focalTrans.fX)); |
| 345 | matrix.postConcat(rot); |
| 346 | } |
| 347 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 348 | matrix.postTranslate(-(*focalX), 0.f); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 349 | |
| 350 | // If the focal point is touching the edge of the circle it will |
| 351 | // cause a degenerate case that must be handled separately |
egdaniel | 8405ef9 | 2014-06-09 11:57:28 -0700 | [diff] [blame] | 352 | // kEdgeErrorTol = 5 * kErrorTol was picked after manual testing the |
| 353 | // stability trade off versus the linear approx used in the Edge Shader |
| 354 | if (SkScalarAbs(1.f - (*focalX)) < kEdgeErrorTol) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 355 | return kEdge_ConicalType; |
| 356 | } |
| 357 | |
| 358 | // Scale factor 1 / (1 - focalX * focalX) |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 359 | SkScalar oneMinusF2 = 1.f - SkScalarMul(*focalX, *focalX); |
reed | 80ea19c | 2015-05-12 10:37:34 -0700 | [diff] [blame] | 360 | SkScalar s = SkScalarInvert(oneMinusF2); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 361 | |
| 362 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 363 | if (s >= 0.f) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 364 | conicalType = kInside_ConicalType; |
| 365 | matrix.postScale(s, s * SkScalarSqrt(oneMinusF2)); |
| 366 | } else { |
| 367 | conicalType = kOutside_ConicalType; |
| 368 | matrix.postScale(s, s); |
| 369 | } |
| 370 | |
| 371 | invLMatrix->postConcat(matrix); |
| 372 | |
| 373 | return conicalType; |
| 374 | } |
| 375 | |
| 376 | ////////////////////////////////////////////////////////////////////////////// |
| 377 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 378 | class FocalOutside2PtConicalEffect : public GrGradientEffect { |
| 379 | public: |
| 380 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 381 | static GrFragmentProcessor* Create(GrContext* ctx, |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 382 | GrShaderDataManager* shaderDataManager, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 383 | const SkTwoPointConicalGradient& shader, |
| 384 | const SkMatrix& matrix, |
| 385 | SkShader::TileMode tm, |
| 386 | SkScalar focalX) { |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 387 | return SkNEW_ARGS(FocalOutside2PtConicalEffect, (ctx, shaderDataManager, shader, matrix, tm, |
| 388 | focalX)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 389 | } |
| 390 | |
| 391 | virtual ~FocalOutside2PtConicalEffect() { } |
| 392 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 393 | const char* name() const override { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 394 | return "Two-Point Conical Gradient Focal Outside"; |
| 395 | } |
| 396 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 397 | void getGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override; |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 398 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 399 | GrGLFragmentProcessor* createGLInstance() const override; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 400 | |
| 401 | bool isFlipped() const { return fIsFlipped; } |
| 402 | SkScalar focal() const { return fFocalX; } |
| 403 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 404 | private: |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 405 | bool onIsEqual(const GrFragmentProcessor& sBase) const override { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 406 | const FocalOutside2PtConicalEffect& s = sBase.cast<FocalOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 407 | return (INHERITED::onIsEqual(sBase) && |
| 408 | this->fFocalX == s.fFocalX && |
| 409 | this->fIsFlipped == s.fIsFlipped); |
| 410 | } |
| 411 | |
| 412 | FocalOutside2PtConicalEffect(GrContext* ctx, |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 413 | GrShaderDataManager* shaderDataManager, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 414 | const SkTwoPointConicalGradient& shader, |
| 415 | const SkMatrix& matrix, |
| 416 | SkShader::TileMode tm, |
| 417 | SkScalar focalX) |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 418 | : INHERITED(ctx, shaderDataManager, shader, matrix, tm) |
| 419 | , fFocalX(focalX) |
| 420 | , fIsFlipped(shader.isFlippedGrad()) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 421 | this->initClassID<FocalOutside2PtConicalEffect>(); |
| 422 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 423 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 424 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 425 | |
| 426 | SkScalar fFocalX; |
| 427 | bool fIsFlipped; |
| 428 | |
| 429 | typedef GrGradientEffect INHERITED; |
| 430 | }; |
| 431 | |
| 432 | class GLFocalOutside2PtConicalEffect : public GrGLGradientEffect { |
| 433 | public: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 434 | GLFocalOutside2PtConicalEffect(const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 435 | virtual ~GLFocalOutside2PtConicalEffect() { } |
| 436 | |
joshualitt | 1598899 | 2014-10-09 15:04:05 -0700 | [diff] [blame] | 437 | virtual void emitCode(GrGLFPBuilder*, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 438 | const GrFragmentProcessor&, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 439 | const char* outputColor, |
| 440 | const char* inputColor, |
| 441 | const TransformedCoordsArray&, |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 442 | const TextureSamplerArray&) override; |
| 443 | void setData(const GrGLProgramDataManager&, const GrProcessor&) override; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 444 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 445 | static void GenKey(const GrProcessor&, const GrGLSLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 446 | |
| 447 | protected: |
| 448 | UniformHandle fParamUni; |
| 449 | |
| 450 | const char* fVSVaryingName; |
| 451 | const char* fFSVaryingName; |
| 452 | |
| 453 | bool fIsFlipped; |
| 454 | |
| 455 | // @{ |
| 456 | /// Values last uploaded as uniforms |
| 457 | |
| 458 | SkScalar fCachedFocal; |
| 459 | |
| 460 | // @} |
| 461 | |
| 462 | private: |
| 463 | typedef GrGLGradientEffect INHERITED; |
| 464 | |
| 465 | }; |
| 466 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 467 | void FocalOutside2PtConicalEffect::getGLProcessorKey(const GrGLSLCaps& caps, |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 468 | GrProcessorKeyBuilder* b) const { |
| 469 | GLFocalOutside2PtConicalEffect::GenKey(*this, caps, b); |
| 470 | } |
| 471 | |
| 472 | GrGLFragmentProcessor* FocalOutside2PtConicalEffect::createGLInstance() const { |
| 473 | return SkNEW_ARGS(GLFocalOutside2PtConicalEffect, (*this)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 474 | } |
| 475 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 476 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(FocalOutside2PtConicalEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 477 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 478 | /* |
| 479 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 480 | */ |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame^] | 481 | GrFragmentProcessor* FocalOutside2PtConicalEffect::TestCreate(GrProcessorTestData* d) { |
| 482 | SkPoint center1 = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()}; |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 483 | SkScalar radius1 = 0.f; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 484 | SkPoint center2; |
| 485 | SkScalar radius2; |
| 486 | do { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame^] | 487 | center2.set(d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 488 | // 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] | 489 | } while (center1 == center2); |
| 490 | SkPoint diff = center2 - center1; |
| 491 | SkScalar diffLen = diff.length(); |
| 492 | // Below makes sure that the focal point is not contained within circle two |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame^] | 493 | radius2 = d->fRandom->nextRangeF(0.f, diffLen); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 494 | |
| 495 | SkColor colors[kMaxRandomGradientColors]; |
| 496 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 497 | SkScalar* stops = stopsArray; |
| 498 | SkShader::TileMode tm; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame^] | 499 | int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tm); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 500 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 501 | center2, radius2, |
| 502 | colors, stops, colorCount, |
| 503 | tm)); |
| 504 | SkPaint paint; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 505 | GrFragmentProcessor* effect; |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 506 | GrColor paintColor; |
joshualitt | 8ca93e7 | 2015-07-08 06:51:43 -0700 | [diff] [blame] | 507 | GrPaint grPaint; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame^] | 508 | SkAssertResult(shader->asFragmentProcessor(d->fContext, paint, |
| 509 | GrTest::TestMatrix(d->fRandom), NULL, |
| 510 | &paintColor, d->fShaderDataManager, |
joshualitt | 8ca93e7 | 2015-07-08 06:51:43 -0700 | [diff] [blame] | 511 | &effect)); |
dandov | 9de5b51 | 2014-06-10 14:38:28 -0700 | [diff] [blame] | 512 | return effect; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 513 | } |
| 514 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 515 | GLFocalOutside2PtConicalEffect::GLFocalOutside2PtConicalEffect(const GrProcessor& processor) |
| 516 | : fVSVaryingName(NULL) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 517 | , fFSVaryingName(NULL) |
| 518 | , fCachedFocal(SK_ScalarMax) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 519 | const FocalOutside2PtConicalEffect& data = processor.cast<FocalOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 520 | fIsFlipped = data.isFlipped(); |
| 521 | } |
| 522 | |
joshualitt | 1598899 | 2014-10-09 15:04:05 -0700 | [diff] [blame] | 523 | void GLFocalOutside2PtConicalEffect::emitCode(GrGLFPBuilder* builder, |
joshualitt | 60030bc | 2014-11-25 14:21:55 -0800 | [diff] [blame] | 524 | const GrFragmentProcessor& fp, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 525 | const char* outputColor, |
| 526 | const char* inputColor, |
| 527 | const TransformedCoordsArray& coords, |
| 528 | const TextureSamplerArray& samplers) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 529 | const FocalOutside2PtConicalEffect& ge = fp.cast<FocalOutside2PtConicalEffect>(); |
joshualitt | 60030bc | 2014-11-25 14:21:55 -0800 | [diff] [blame] | 530 | this->emitUniforms(builder, ge); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 531 | fParamUni = builder->addUniformArray(GrGLProgramBuilder::kFragment_Visibility, |
bsalomon | 422f56f | 2014-12-09 10:18:12 -0800 | [diff] [blame] | 532 | kFloat_GrSLType, kDefault_GrSLPrecision, |
| 533 | "Conical2FSParams", 2); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 534 | SkString tName("t"); |
| 535 | SkString p0; // focalX |
| 536 | SkString p1; // 1 - focalX * focalX |
| 537 | |
| 538 | builder->getUniformVariable(fParamUni).appendArrayAccess(0, &p0); |
| 539 | builder->getUniformVariable(fParamUni).appendArrayAccess(1, &p1); |
| 540 | |
| 541 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
egdaniel | 29bee0f | 2015-04-29 11:54:42 -0700 | [diff] [blame] | 542 | GrGLFragmentBuilder* fsBuilder = builder->getFragmentShaderBuilder(); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 543 | SkString coords2DString = fsBuilder->ensureFSCoords2D(coords, 0); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 544 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 545 | |
| 546 | // t = p.x * focal.x +/- sqrt(p.x^2 + (1 - focal.x^2) * p.y^2) |
| 547 | |
| 548 | // output will default to transparent black (we simply won't write anything |
| 549 | // else to it if invalid, instead of discarding or returning prematurely) |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 550 | fsBuilder->codeAppendf("\t%s = vec4(0.0,0.0,0.0,0.0);\n", outputColor); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 551 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 552 | fsBuilder->codeAppendf("\tfloat xs = %s.x * %s.x;\n", coords2D, coords2D); |
| 553 | fsBuilder->codeAppendf("\tfloat ys = %s.y * %s.y;\n", coords2D, coords2D); |
| 554 | fsBuilder->codeAppendf("\tfloat d = xs + %s * ys;\n", p1.c_str()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 555 | |
| 556 | // Must check to see if we flipped the circle order (to make sure start radius < end radius) |
| 557 | // If so we must also flip sign on sqrt |
| 558 | if (!fIsFlipped) { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 559 | fsBuilder->codeAppendf("\tfloat %s = %s.x * %s + sqrt(d);\n", tName.c_str(), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 560 | coords2D, p0.c_str()); |
| 561 | } else { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 562 | fsBuilder->codeAppendf("\tfloat %s = %s.x * %s - sqrt(d);\n", tName.c_str(), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 563 | coords2D, p0.c_str()); |
| 564 | } |
| 565 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 566 | fsBuilder->codeAppendf("\tif (%s >= 0.0 && d >= 0.0) {\n", tName.c_str()); |
| 567 | fsBuilder->codeAppend("\t\t"); |
joshualitt | 60030bc | 2014-11-25 14:21:55 -0800 | [diff] [blame] | 568 | this->emitColor(builder, ge, tName.c_str(), outputColor, inputColor, samplers); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 569 | fsBuilder->codeAppend("\t}\n"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 570 | } |
| 571 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 572 | void GLFocalOutside2PtConicalEffect::setData(const GrGLProgramDataManager& pdman, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 573 | const GrProcessor& processor) { |
| 574 | INHERITED::setData(pdman, processor); |
| 575 | const FocalOutside2PtConicalEffect& data = processor.cast<FocalOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 576 | SkASSERT(data.isFlipped() == fIsFlipped); |
| 577 | SkScalar focal = data.focal(); |
| 578 | |
| 579 | if (fCachedFocal != focal) { |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 580 | SkScalar oneMinus2F = 1.f - SkScalarMul(focal, focal); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 581 | |
| 582 | float values[2] = { |
| 583 | SkScalarToFloat(focal), |
| 584 | SkScalarToFloat(oneMinus2F), |
| 585 | }; |
| 586 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 587 | pdman.set1fv(fParamUni, 2, values); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 588 | fCachedFocal = focal; |
| 589 | } |
| 590 | } |
| 591 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 592 | void GLFocalOutside2PtConicalEffect::GenKey(const GrProcessor& processor, |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 593 | const GrGLSLCaps&, GrProcessorKeyBuilder* b) { |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 594 | uint32_t* key = b->add32n(2); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 595 | key[0] = GenBaseGradientKey(processor); |
| 596 | key[1] = processor.cast<FocalOutside2PtConicalEffect>().isFlipped(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 597 | } |
| 598 | |
| 599 | ////////////////////////////////////////////////////////////////////////////// |
| 600 | |
| 601 | class GLFocalInside2PtConicalEffect; |
| 602 | |
| 603 | class FocalInside2PtConicalEffect : public GrGradientEffect { |
| 604 | public: |
| 605 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 606 | static GrFragmentProcessor* Create(GrContext* ctx, |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 607 | GrShaderDataManager* shaderDataManager, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 608 | const SkTwoPointConicalGradient& shader, |
| 609 | const SkMatrix& matrix, |
| 610 | SkShader::TileMode tm, |
| 611 | SkScalar focalX) { |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 612 | return SkNEW_ARGS(FocalInside2PtConicalEffect, (ctx, shaderDataManager, shader, matrix, tm, |
| 613 | focalX)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 614 | } |
| 615 | |
| 616 | virtual ~FocalInside2PtConicalEffect() {} |
| 617 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 618 | const char* name() const override { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 619 | return "Two-Point Conical Gradient Focal Inside"; |
| 620 | } |
| 621 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 622 | void getGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override; |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 623 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 624 | GrGLFragmentProcessor* createGLInstance() const override; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 625 | |
| 626 | SkScalar focal() const { return fFocalX; } |
| 627 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 628 | typedef GLFocalInside2PtConicalEffect GLProcessor; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 629 | |
| 630 | private: |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 631 | bool onIsEqual(const GrFragmentProcessor& sBase) const override { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 632 | const FocalInside2PtConicalEffect& s = sBase.cast<FocalInside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 633 | return (INHERITED::onIsEqual(sBase) && |
| 634 | this->fFocalX == s.fFocalX); |
| 635 | } |
| 636 | |
| 637 | FocalInside2PtConicalEffect(GrContext* ctx, |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 638 | GrShaderDataManager* shaderDataManager, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 639 | const SkTwoPointConicalGradient& shader, |
| 640 | const SkMatrix& matrix, |
| 641 | SkShader::TileMode tm, |
| 642 | SkScalar focalX) |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 643 | : INHERITED(ctx, shaderDataManager, shader, matrix, tm), fFocalX(focalX) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 644 | this->initClassID<FocalInside2PtConicalEffect>(); |
| 645 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 646 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 647 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 648 | |
| 649 | SkScalar fFocalX; |
| 650 | |
| 651 | typedef GrGradientEffect INHERITED; |
| 652 | }; |
| 653 | |
| 654 | class GLFocalInside2PtConicalEffect : public GrGLGradientEffect { |
| 655 | public: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 656 | GLFocalInside2PtConicalEffect(const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 657 | virtual ~GLFocalInside2PtConicalEffect() {} |
| 658 | |
joshualitt | 1598899 | 2014-10-09 15:04:05 -0700 | [diff] [blame] | 659 | virtual void emitCode(GrGLFPBuilder*, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 660 | const GrFragmentProcessor&, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 661 | const char* outputColor, |
| 662 | const char* inputColor, |
| 663 | const TransformedCoordsArray&, |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 664 | const TextureSamplerArray&) override; |
| 665 | void setData(const GrGLProgramDataManager&, const GrProcessor&) override; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 666 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 667 | static void GenKey(const GrProcessor&, const GrGLSLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 668 | |
| 669 | protected: |
| 670 | UniformHandle fFocalUni; |
| 671 | |
| 672 | const char* fVSVaryingName; |
| 673 | const char* fFSVaryingName; |
| 674 | |
| 675 | // @{ |
| 676 | /// Values last uploaded as uniforms |
| 677 | |
| 678 | SkScalar fCachedFocal; |
| 679 | |
| 680 | // @} |
| 681 | |
| 682 | private: |
| 683 | typedef GrGLGradientEffect INHERITED; |
| 684 | |
| 685 | }; |
| 686 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 687 | void FocalInside2PtConicalEffect::getGLProcessorKey(const GrGLSLCaps& caps, |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 688 | GrProcessorKeyBuilder* b) const { |
| 689 | GLFocalInside2PtConicalEffect::GenKey(*this, caps, b); |
| 690 | } |
| 691 | |
| 692 | GrGLFragmentProcessor* FocalInside2PtConicalEffect::createGLInstance() const { |
| 693 | return SkNEW_ARGS(GLFocalInside2PtConicalEffect, (*this)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 694 | } |
| 695 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 696 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(FocalInside2PtConicalEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 697 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 698 | /* |
| 699 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 700 | */ |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame^] | 701 | GrFragmentProcessor* FocalInside2PtConicalEffect::TestCreate(GrProcessorTestData* d) { |
| 702 | SkPoint center1 = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()}; |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 703 | SkScalar radius1 = 0.f; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 704 | SkPoint center2; |
| 705 | SkScalar radius2; |
| 706 | do { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame^] | 707 | center2.set(d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 708 | // Below makes sure radius2 is larger enouch such that the focal point |
| 709 | // is inside the end circle |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame^] | 710 | SkScalar increase = d->fRandom->nextUScalar1(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 711 | SkPoint diff = center2 - center1; |
| 712 | SkScalar diffLen = diff.length(); |
| 713 | radius2 = diffLen + increase; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 714 | // If the circles are identical the factory will give us an empty shader. |
| 715 | } while (radius1 == radius2 && center1 == center2); |
| 716 | |
| 717 | SkColor colors[kMaxRandomGradientColors]; |
| 718 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 719 | SkScalar* stops = stopsArray; |
| 720 | SkShader::TileMode tm; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame^] | 721 | int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tm); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 722 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 723 | center2, radius2, |
| 724 | colors, stops, colorCount, |
| 725 | tm)); |
| 726 | SkPaint paint; |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 727 | GrColor paintColor; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 728 | GrFragmentProcessor* fp; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame^] | 729 | SkAssertResult(shader->asFragmentProcessor(d->fContext, paint, |
| 730 | GrTest::TestMatrix(d->fRandom), NULL, |
| 731 | &paintColor, d->fShaderDataManager, &fp)); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 732 | return fp; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 733 | } |
| 734 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 735 | GLFocalInside2PtConicalEffect::GLFocalInside2PtConicalEffect(const GrProcessor&) |
| 736 | : fVSVaryingName(NULL) |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 737 | , fFSVaryingName(NULL) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 738 | , fCachedFocal(SK_ScalarMax) {} |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 739 | |
joshualitt | 1598899 | 2014-10-09 15:04:05 -0700 | [diff] [blame] | 740 | void GLFocalInside2PtConicalEffect::emitCode(GrGLFPBuilder* builder, |
joshualitt | 60030bc | 2014-11-25 14:21:55 -0800 | [diff] [blame] | 741 | const GrFragmentProcessor& fp, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 742 | const char* outputColor, |
| 743 | const char* inputColor, |
| 744 | const TransformedCoordsArray& coords, |
| 745 | const TextureSamplerArray& samplers) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 746 | const FocalInside2PtConicalEffect& ge = fp.cast<FocalInside2PtConicalEffect>(); |
joshualitt | 60030bc | 2014-11-25 14:21:55 -0800 | [diff] [blame] | 747 | this->emitUniforms(builder, ge); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 748 | fFocalUni = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility, |
bsalomon | 422f56f | 2014-12-09 10:18:12 -0800 | [diff] [blame] | 749 | kFloat_GrSLType, kDefault_GrSLPrecision, |
| 750 | "Conical2FSParams"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 751 | SkString tName("t"); |
| 752 | |
| 753 | // this is the distance along x-axis from the end center to focal point in |
| 754 | // transformed coordinates |
| 755 | GrGLShaderVar focal = builder->getUniformVariable(fFocalUni); |
| 756 | |
| 757 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
egdaniel | 29bee0f | 2015-04-29 11:54:42 -0700 | [diff] [blame] | 758 | GrGLFragmentBuilder* fsBuilder = builder->getFragmentShaderBuilder(); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 759 | SkString coords2DString = fsBuilder->ensureFSCoords2D(coords, 0); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 760 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 761 | |
| 762 | // t = p.x * focalX + length(p) |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 763 | fsBuilder->codeAppendf("\tfloat %s = %s.x * %s + length(%s);\n", tName.c_str(), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 764 | coords2D, focal.c_str(), coords2D); |
| 765 | |
joshualitt | 60030bc | 2014-11-25 14:21:55 -0800 | [diff] [blame] | 766 | this->emitColor(builder, ge, tName.c_str(), outputColor, inputColor, samplers); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 767 | } |
| 768 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 769 | void GLFocalInside2PtConicalEffect::setData(const GrGLProgramDataManager& pdman, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 770 | const GrProcessor& processor) { |
| 771 | INHERITED::setData(pdman, processor); |
| 772 | const FocalInside2PtConicalEffect& data = processor.cast<FocalInside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 773 | SkScalar focal = data.focal(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 774 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 775 | if (fCachedFocal != focal) { |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 776 | pdman.set1f(fFocalUni, SkScalarToFloat(focal)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 777 | fCachedFocal = focal; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 778 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 779 | } |
| 780 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 781 | void GLFocalInside2PtConicalEffect::GenKey(const GrProcessor& processor, |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 782 | const GrGLSLCaps&, GrProcessorKeyBuilder* b) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 783 | b->add32(GenBaseGradientKey(processor)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 784 | } |
| 785 | |
| 786 | ////////////////////////////////////////////////////////////////////////////// |
| 787 | // Circle Conical Gradients |
| 788 | ////////////////////////////////////////////////////////////////////////////// |
| 789 | |
| 790 | struct CircleConicalInfo { |
| 791 | SkPoint fCenterEnd; |
| 792 | SkScalar fA; |
| 793 | SkScalar fB; |
| 794 | SkScalar fC; |
| 795 | }; |
| 796 | |
| 797 | // Returns focal distance along x-axis in transformed coords |
| 798 | static ConicalType set_matrix_circle_conical(const SkTwoPointConicalGradient& shader, |
| 799 | SkMatrix* invLMatrix, CircleConicalInfo* info) { |
| 800 | // Inverse of the current local matrix is passed in then, |
| 801 | // translate and scale such that start circle is on the origin and has radius 1 |
| 802 | const SkPoint& centerStart = shader.getStartCenter(); |
| 803 | const SkPoint& centerEnd = shader.getEndCenter(); |
| 804 | SkScalar radiusStart = shader.getStartRadius(); |
| 805 | SkScalar radiusEnd = shader.getEndRadius(); |
| 806 | |
| 807 | SkMatrix matrix; |
| 808 | |
| 809 | matrix.setTranslate(-centerStart.fX, -centerStart.fY); |
| 810 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 811 | SkScalar invStartRad = 1.f / radiusStart; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 812 | matrix.postScale(invStartRad, invStartRad); |
| 813 | |
| 814 | radiusEnd /= radiusStart; |
| 815 | |
| 816 | SkPoint centerEndTrans; |
| 817 | matrix.mapPoints(¢erEndTrans, ¢erEnd, 1); |
| 818 | |
| 819 | SkScalar A = centerEndTrans.fX * centerEndTrans.fX + centerEndTrans.fY * centerEndTrans.fY |
| 820 | - radiusEnd * radiusEnd + 2 * radiusEnd - 1; |
| 821 | |
| 822 | // Check to see if start circle is inside end circle with edges touching. |
| 823 | // 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] | 824 | // to the edge shader. kEdgeErrorTol = 5 * kErrorTol was picked after manual testing |
| 825 | // so that C = 1 / A is stable, and the linear approximation used in the Edge shader is |
| 826 | // still accurate. |
| 827 | if (SkScalarAbs(A) < kEdgeErrorTol) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 828 | return kEdge_ConicalType; |
| 829 | } |
| 830 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 831 | SkScalar C = 1.f / A; |
| 832 | SkScalar B = (radiusEnd - 1.f) * C; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 833 | |
| 834 | matrix.postScale(C, C); |
| 835 | |
| 836 | invLMatrix->postConcat(matrix); |
| 837 | |
| 838 | info->fCenterEnd = centerEndTrans; |
| 839 | info->fA = A; |
| 840 | info->fB = B; |
| 841 | info->fC = C; |
| 842 | |
| 843 | // 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] | 844 | if (A < 0.f) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 845 | return kInside_ConicalType; |
| 846 | } |
| 847 | return kOutside_ConicalType; |
| 848 | } |
| 849 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 850 | class CircleInside2PtConicalEffect : public GrGradientEffect { |
| 851 | public: |
| 852 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 853 | static GrFragmentProcessor* Create(GrContext* ctx, |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 854 | GrShaderDataManager* shaderDataManager, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 855 | const SkTwoPointConicalGradient& shader, |
| 856 | const SkMatrix& matrix, |
| 857 | SkShader::TileMode tm, |
| 858 | const CircleConicalInfo& info) { |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 859 | return SkNEW_ARGS(CircleInside2PtConicalEffect, (ctx, shaderDataManager, shader, matrix, tm, |
| 860 | info)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 861 | } |
| 862 | |
| 863 | virtual ~CircleInside2PtConicalEffect() {} |
| 864 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 865 | const char* name() const override { return "Two-Point Conical Gradient Inside"; } |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 866 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 867 | virtual void getGLProcessorKey(const GrGLSLCaps& caps, |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 868 | GrProcessorKeyBuilder* b) const override; |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 869 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 870 | GrGLFragmentProcessor* createGLInstance() const override; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 871 | |
| 872 | SkScalar centerX() const { return fInfo.fCenterEnd.fX; } |
| 873 | SkScalar centerY() const { return fInfo.fCenterEnd.fY; } |
| 874 | SkScalar A() const { return fInfo.fA; } |
| 875 | SkScalar B() const { return fInfo.fB; } |
| 876 | SkScalar C() const { return fInfo.fC; } |
| 877 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 878 | private: |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 879 | bool onIsEqual(const GrFragmentProcessor& sBase) const override { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 880 | const CircleInside2PtConicalEffect& s = sBase.cast<CircleInside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 881 | return (INHERITED::onIsEqual(sBase) && |
| 882 | this->fInfo.fCenterEnd == s.fInfo.fCenterEnd && |
| 883 | this->fInfo.fA == s.fInfo.fA && |
| 884 | this->fInfo.fB == s.fInfo.fB && |
| 885 | this->fInfo.fC == s.fInfo.fC); |
| 886 | } |
| 887 | |
| 888 | CircleInside2PtConicalEffect(GrContext* ctx, |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 889 | GrShaderDataManager* shaderDataManager, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 890 | const SkTwoPointConicalGradient& shader, |
| 891 | const SkMatrix& matrix, |
| 892 | SkShader::TileMode tm, |
| 893 | const CircleConicalInfo& info) |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 894 | : INHERITED(ctx, shaderDataManager, shader, matrix, tm), fInfo(info) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 895 | this->initClassID<CircleInside2PtConicalEffect>(); |
| 896 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 897 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 898 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 899 | |
| 900 | const CircleConicalInfo fInfo; |
| 901 | |
| 902 | typedef GrGradientEffect INHERITED; |
| 903 | }; |
| 904 | |
| 905 | class GLCircleInside2PtConicalEffect : public GrGLGradientEffect { |
| 906 | public: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 907 | GLCircleInside2PtConicalEffect(const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 908 | virtual ~GLCircleInside2PtConicalEffect() {} |
| 909 | |
joshualitt | 1598899 | 2014-10-09 15:04:05 -0700 | [diff] [blame] | 910 | virtual void emitCode(GrGLFPBuilder*, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 911 | const GrFragmentProcessor&, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 912 | const char* outputColor, |
| 913 | const char* inputColor, |
| 914 | const TransformedCoordsArray&, |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 915 | const TextureSamplerArray&) override; |
| 916 | void setData(const GrGLProgramDataManager&, const GrProcessor&) override; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 917 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 918 | static void GenKey(const GrProcessor&, const GrGLSLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 919 | |
| 920 | protected: |
| 921 | UniformHandle fCenterUni; |
| 922 | UniformHandle fParamUni; |
| 923 | |
| 924 | const char* fVSVaryingName; |
| 925 | const char* fFSVaryingName; |
| 926 | |
| 927 | // @{ |
| 928 | /// Values last uploaded as uniforms |
| 929 | |
| 930 | SkScalar fCachedCenterX; |
| 931 | SkScalar fCachedCenterY; |
| 932 | SkScalar fCachedA; |
| 933 | SkScalar fCachedB; |
| 934 | SkScalar fCachedC; |
| 935 | |
| 936 | // @} |
| 937 | |
| 938 | private: |
| 939 | typedef GrGLGradientEffect INHERITED; |
| 940 | |
| 941 | }; |
| 942 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 943 | void CircleInside2PtConicalEffect::getGLProcessorKey(const GrGLSLCaps& caps, |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 944 | GrProcessorKeyBuilder* b) const { |
| 945 | GLCircleInside2PtConicalEffect::GenKey(*this, caps, b); |
| 946 | } |
| 947 | |
| 948 | GrGLFragmentProcessor* CircleInside2PtConicalEffect::createGLInstance() const { |
| 949 | return SkNEW_ARGS(GLCircleInside2PtConicalEffect, (*this)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 950 | } |
| 951 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 952 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(CircleInside2PtConicalEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 953 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 954 | /* |
| 955 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 956 | */ |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame^] | 957 | GrFragmentProcessor* |
| 958 | CircleInside2PtConicalEffect::TestCreate(GrProcessorTestData* d) { |
| 959 | SkPoint center1 = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()}; |
| 960 | 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] | 961 | SkPoint center2; |
| 962 | SkScalar radius2; |
| 963 | do { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame^] | 964 | center2.set(d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 965 | // Below makes sure that circle one is contained within circle two |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame^] | 966 | SkScalar increase = d->fRandom->nextUScalar1(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 967 | SkPoint diff = center2 - center1; |
| 968 | SkScalar diffLen = diff.length(); |
| 969 | radius2 = radius1 + diffLen + increase; |
| 970 | // If the circles are identical the factory will give us an empty shader. |
| 971 | } while (radius1 == radius2 && center1 == center2); |
| 972 | |
| 973 | SkColor colors[kMaxRandomGradientColors]; |
| 974 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 975 | SkScalar* stops = stopsArray; |
| 976 | SkShader::TileMode tm; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame^] | 977 | int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tm); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 978 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 979 | center2, radius2, |
| 980 | colors, stops, colorCount, |
| 981 | tm)); |
| 982 | SkPaint paint; |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 983 | GrColor paintColor; |
joshualitt | 8ca93e7 | 2015-07-08 06:51:43 -0700 | [diff] [blame] | 984 | GrFragmentProcessor* fp; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame^] | 985 | SkAssertResult(shader->asFragmentProcessor(d->fContext, paint, |
| 986 | GrTest::TestMatrix(d->fRandom), NULL, |
| 987 | &paintColor, d->fShaderDataManager, &fp)); |
joshualitt | 8ca93e7 | 2015-07-08 06:51:43 -0700 | [diff] [blame] | 988 | return fp; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 989 | } |
| 990 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 991 | GLCircleInside2PtConicalEffect::GLCircleInside2PtConicalEffect(const GrProcessor& processor) |
| 992 | : fVSVaryingName(NULL) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 993 | , fFSVaryingName(NULL) |
| 994 | , fCachedCenterX(SK_ScalarMax) |
| 995 | , fCachedCenterY(SK_ScalarMax) |
| 996 | , fCachedA(SK_ScalarMax) |
| 997 | , fCachedB(SK_ScalarMax) |
| 998 | , fCachedC(SK_ScalarMax) {} |
| 999 | |
joshualitt | 1598899 | 2014-10-09 15:04:05 -0700 | [diff] [blame] | 1000 | void GLCircleInside2PtConicalEffect::emitCode(GrGLFPBuilder* builder, |
joshualitt | 60030bc | 2014-11-25 14:21:55 -0800 | [diff] [blame] | 1001 | const GrFragmentProcessor& fp, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1002 | const char* outputColor, |
| 1003 | const char* inputColor, |
| 1004 | const TransformedCoordsArray& coords, |
| 1005 | const TextureSamplerArray& samplers) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 1006 | const CircleInside2PtConicalEffect& ge = fp.cast<CircleInside2PtConicalEffect>(); |
joshualitt | 60030bc | 2014-11-25 14:21:55 -0800 | [diff] [blame] | 1007 | this->emitUniforms(builder, ge); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1008 | fCenterUni = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility, |
bsalomon | 422f56f | 2014-12-09 10:18:12 -0800 | [diff] [blame] | 1009 | kVec2f_GrSLType, kDefault_GrSLPrecision, |
| 1010 | "Conical2FSCenter"); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1011 | fParamUni = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility, |
bsalomon | 422f56f | 2014-12-09 10:18:12 -0800 | [diff] [blame] | 1012 | kVec3f_GrSLType, kDefault_GrSLPrecision, |
| 1013 | "Conical2FSParams"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1014 | SkString tName("t"); |
| 1015 | |
| 1016 | GrGLShaderVar center = builder->getUniformVariable(fCenterUni); |
| 1017 | // params.x = A |
| 1018 | // params.y = B |
| 1019 | // params.z = C |
| 1020 | GrGLShaderVar params = builder->getUniformVariable(fParamUni); |
| 1021 | |
| 1022 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
egdaniel | 29bee0f | 2015-04-29 11:54:42 -0700 | [diff] [blame] | 1023 | GrGLFragmentBuilder* fsBuilder = builder->getFragmentShaderBuilder(); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1024 | SkString coords2DString = fsBuilder->ensureFSCoords2D(coords, 0); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 1025 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1026 | |
| 1027 | // p = coords2D |
| 1028 | // e = center end |
| 1029 | // r = radius end |
| 1030 | // A = dot(e, e) - r^2 + 2 * r - 1 |
| 1031 | // B = (r -1) / A |
| 1032 | // C = 1 / A |
| 1033 | // d = dot(e, p) + B |
| 1034 | // t = d +/- sqrt(d^2 - A * dot(p, p) + C) |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1035 | fsBuilder->codeAppendf("\tfloat pDotp = dot(%s, %s);\n", coords2D, coords2D); |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 1036 | fsBuilder->codeAppendf("\tfloat d = dot(%s, %s) + %s.y;\n", coords2D, center.c_str(), |
| 1037 | params.c_str()); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1038 | fsBuilder->codeAppendf("\tfloat %s = d + sqrt(d * d - %s.x * pDotp + %s.z);\n", |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1039 | tName.c_str(), params.c_str(), params.c_str()); |
| 1040 | |
joshualitt | 60030bc | 2014-11-25 14:21:55 -0800 | [diff] [blame] | 1041 | this->emitColor(builder, ge, tName.c_str(), outputColor, inputColor, samplers); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1042 | } |
| 1043 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 1044 | void GLCircleInside2PtConicalEffect::setData(const GrGLProgramDataManager& pdman, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1045 | const GrProcessor& processor) { |
| 1046 | INHERITED::setData(pdman, processor); |
| 1047 | const CircleInside2PtConicalEffect& data = processor.cast<CircleInside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1048 | SkScalar centerX = data.centerX(); |
| 1049 | SkScalar centerY = data.centerY(); |
| 1050 | SkScalar A = data.A(); |
| 1051 | SkScalar B = data.B(); |
| 1052 | SkScalar C = data.C(); |
| 1053 | |
| 1054 | if (fCachedCenterX != centerX || fCachedCenterY != centerY || |
| 1055 | fCachedA != A || fCachedB != B || fCachedC != C) { |
| 1056 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 1057 | pdman.set2f(fCenterUni, SkScalarToFloat(centerX), SkScalarToFloat(centerY)); |
| 1058 | pdman.set3f(fParamUni, SkScalarToFloat(A), SkScalarToFloat(B), SkScalarToFloat(C)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1059 | |
| 1060 | fCachedCenterX = centerX; |
| 1061 | fCachedCenterY = centerY; |
| 1062 | fCachedA = A; |
| 1063 | fCachedB = B; |
| 1064 | fCachedC = C; |
| 1065 | } |
| 1066 | } |
| 1067 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1068 | void GLCircleInside2PtConicalEffect::GenKey(const GrProcessor& processor, |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 1069 | const GrGLSLCaps&, GrProcessorKeyBuilder* b) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1070 | b->add32(GenBaseGradientKey(processor)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1071 | } |
| 1072 | |
| 1073 | ////////////////////////////////////////////////////////////////////////////// |
| 1074 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1075 | class CircleOutside2PtConicalEffect : public GrGradientEffect { |
| 1076 | public: |
| 1077 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1078 | static GrFragmentProcessor* Create(GrContext* ctx, |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 1079 | GrShaderDataManager* shaderDataManager, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1080 | const SkTwoPointConicalGradient& shader, |
| 1081 | const SkMatrix& matrix, |
| 1082 | SkShader::TileMode tm, |
| 1083 | const CircleConicalInfo& info) { |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 1084 | return SkNEW_ARGS(CircleOutside2PtConicalEffect, (ctx, shaderDataManager, shader, matrix, |
| 1085 | tm, info)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1086 | } |
| 1087 | |
| 1088 | virtual ~CircleOutside2PtConicalEffect() {} |
| 1089 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 1090 | const char* name() const override { return "Two-Point Conical Gradient Outside"; } |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 1091 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 1092 | void getGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override; |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 1093 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 1094 | GrGLFragmentProcessor* createGLInstance() const override; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1095 | |
| 1096 | SkScalar centerX() const { return fInfo.fCenterEnd.fX; } |
| 1097 | SkScalar centerY() const { return fInfo.fCenterEnd.fY; } |
| 1098 | SkScalar A() const { return fInfo.fA; } |
| 1099 | SkScalar B() const { return fInfo.fB; } |
| 1100 | SkScalar C() const { return fInfo.fC; } |
| 1101 | SkScalar tLimit() const { return fTLimit; } |
| 1102 | bool isFlipped() const { return fIsFlipped; } |
| 1103 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1104 | private: |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 1105 | bool onIsEqual(const GrFragmentProcessor& sBase) const override { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 1106 | const CircleOutside2PtConicalEffect& s = sBase.cast<CircleOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1107 | return (INHERITED::onIsEqual(sBase) && |
| 1108 | this->fInfo.fCenterEnd == s.fInfo.fCenterEnd && |
| 1109 | this->fInfo.fA == s.fInfo.fA && |
| 1110 | this->fInfo.fB == s.fInfo.fB && |
| 1111 | this->fInfo.fC == s.fInfo.fC && |
| 1112 | this->fTLimit == s.fTLimit && |
| 1113 | this->fIsFlipped == s.fIsFlipped); |
| 1114 | } |
| 1115 | |
| 1116 | CircleOutside2PtConicalEffect(GrContext* ctx, |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 1117 | GrShaderDataManager* shaderDataManager, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1118 | const SkTwoPointConicalGradient& shader, |
| 1119 | const SkMatrix& matrix, |
| 1120 | SkShader::TileMode tm, |
| 1121 | const CircleConicalInfo& info) |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 1122 | : INHERITED(ctx, shaderDataManager, shader, matrix, tm), fInfo(info) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 1123 | this->initClassID<CircleOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1124 | if (shader.getStartRadius() != shader.getEndRadius()) { |
reed | 80ea19c | 2015-05-12 10:37:34 -0700 | [diff] [blame] | 1125 | fTLimit = shader.getStartRadius() / (shader.getStartRadius() - shader.getEndRadius()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1126 | } else { |
| 1127 | fTLimit = SK_ScalarMin; |
| 1128 | } |
| 1129 | |
| 1130 | fIsFlipped = shader.isFlippedGrad(); |
| 1131 | } |
| 1132 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1133 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1134 | |
| 1135 | const CircleConicalInfo fInfo; |
| 1136 | SkScalar fTLimit; |
| 1137 | bool fIsFlipped; |
| 1138 | |
| 1139 | typedef GrGradientEffect INHERITED; |
| 1140 | }; |
| 1141 | |
| 1142 | class GLCircleOutside2PtConicalEffect : public GrGLGradientEffect { |
| 1143 | public: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 1144 | GLCircleOutside2PtConicalEffect(const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1145 | virtual ~GLCircleOutside2PtConicalEffect() {} |
| 1146 | |
joshualitt | 1598899 | 2014-10-09 15:04:05 -0700 | [diff] [blame] | 1147 | virtual void emitCode(GrGLFPBuilder*, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1148 | const GrFragmentProcessor&, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1149 | const char* outputColor, |
| 1150 | const char* inputColor, |
| 1151 | const TransformedCoordsArray&, |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 1152 | const TextureSamplerArray&) override; |
| 1153 | void setData(const GrGLProgramDataManager&, const GrProcessor&) override; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1154 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 1155 | static void GenKey(const GrProcessor&, const GrGLSLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1156 | |
| 1157 | protected: |
| 1158 | UniformHandle fCenterUni; |
| 1159 | UniformHandle fParamUni; |
| 1160 | |
| 1161 | const char* fVSVaryingName; |
| 1162 | const char* fFSVaryingName; |
| 1163 | |
| 1164 | bool fIsFlipped; |
| 1165 | |
| 1166 | // @{ |
| 1167 | /// Values last uploaded as uniforms |
| 1168 | |
| 1169 | SkScalar fCachedCenterX; |
| 1170 | SkScalar fCachedCenterY; |
| 1171 | SkScalar fCachedA; |
| 1172 | SkScalar fCachedB; |
| 1173 | SkScalar fCachedC; |
| 1174 | SkScalar fCachedTLimit; |
| 1175 | |
| 1176 | // @} |
| 1177 | |
| 1178 | private: |
| 1179 | typedef GrGLGradientEffect INHERITED; |
| 1180 | |
| 1181 | }; |
| 1182 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 1183 | void CircleOutside2PtConicalEffect::getGLProcessorKey(const GrGLSLCaps& caps, |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 1184 | GrProcessorKeyBuilder* b) const { |
| 1185 | GLCircleOutside2PtConicalEffect::GenKey(*this, caps, b); |
| 1186 | } |
| 1187 | |
| 1188 | GrGLFragmentProcessor* CircleOutside2PtConicalEffect::createGLInstance() const { |
| 1189 | return SkNEW_ARGS(GLCircleOutside2PtConicalEffect, (*this)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1190 | } |
| 1191 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1192 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(CircleOutside2PtConicalEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1193 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 1194 | /* |
| 1195 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 1196 | */ |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame^] | 1197 | GrFragmentProcessor* CircleOutside2PtConicalEffect::TestCreate(GrProcessorTestData* d) { |
| 1198 | SkPoint center1 = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()}; |
| 1199 | 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] | 1200 | SkPoint center2; |
| 1201 | SkScalar radius2; |
| 1202 | SkScalar diffLen; |
| 1203 | do { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame^] | 1204 | center2.set(d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1205 | // If the circles share a center than we can't be in the outside case |
| 1206 | } while (center1 == center2); |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 1207 | SkPoint diff = center2 - center1; |
| 1208 | diffLen = diff.length(); |
| 1209 | // Below makes sure that circle one is not contained within circle two |
| 1210 | // and have radius2 >= radius to match sorting on cpu side |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame^] | 1211 | radius2 = radius1 + d->fRandom->nextRangeF(0.f, diffLen); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1212 | |
| 1213 | SkColor colors[kMaxRandomGradientColors]; |
| 1214 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 1215 | SkScalar* stops = stopsArray; |
| 1216 | SkShader::TileMode tm; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame^] | 1217 | int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tm); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1218 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 1219 | center2, radius2, |
| 1220 | colors, stops, colorCount, |
| 1221 | tm)); |
| 1222 | SkPaint paint; |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 1223 | GrColor paintColor; |
joshualitt | 8ca93e7 | 2015-07-08 06:51:43 -0700 | [diff] [blame] | 1224 | GrFragmentProcessor* fp; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame^] | 1225 | SkAssertResult(shader->asFragmentProcessor(d->fContext, paint, |
| 1226 | GrTest::TestMatrix(d->fRandom), NULL, |
| 1227 | &paintColor, d->fShaderDataManager, &fp)); |
joshualitt | 8ca93e7 | 2015-07-08 06:51:43 -0700 | [diff] [blame] | 1228 | return fp; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1229 | } |
| 1230 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 1231 | GLCircleOutside2PtConicalEffect::GLCircleOutside2PtConicalEffect(const GrProcessor& processor) |
| 1232 | : fVSVaryingName(NULL) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1233 | , fFSVaryingName(NULL) |
| 1234 | , fCachedCenterX(SK_ScalarMax) |
| 1235 | , fCachedCenterY(SK_ScalarMax) |
| 1236 | , fCachedA(SK_ScalarMax) |
| 1237 | , fCachedB(SK_ScalarMax) |
| 1238 | , fCachedC(SK_ScalarMax) |
| 1239 | , fCachedTLimit(SK_ScalarMax) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1240 | const CircleOutside2PtConicalEffect& data = processor.cast<CircleOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1241 | fIsFlipped = data.isFlipped(); |
| 1242 | } |
| 1243 | |
joshualitt | 1598899 | 2014-10-09 15:04:05 -0700 | [diff] [blame] | 1244 | void GLCircleOutside2PtConicalEffect::emitCode(GrGLFPBuilder* builder, |
joshualitt | 60030bc | 2014-11-25 14:21:55 -0800 | [diff] [blame] | 1245 | const GrFragmentProcessor& fp, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1246 | const char* outputColor, |
| 1247 | const char* inputColor, |
| 1248 | const TransformedCoordsArray& coords, |
| 1249 | const TextureSamplerArray& samplers) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 1250 | const CircleOutside2PtConicalEffect& ge = fp.cast<CircleOutside2PtConicalEffect>(); |
joshualitt | 60030bc | 2014-11-25 14:21:55 -0800 | [diff] [blame] | 1251 | this->emitUniforms(builder, ge); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1252 | fCenterUni = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility, |
bsalomon | 422f56f | 2014-12-09 10:18:12 -0800 | [diff] [blame] | 1253 | kVec2f_GrSLType, kDefault_GrSLPrecision, |
| 1254 | "Conical2FSCenter"); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1255 | fParamUni = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility, |
bsalomon | 422f56f | 2014-12-09 10:18:12 -0800 | [diff] [blame] | 1256 | kVec4f_GrSLType, kDefault_GrSLPrecision, |
| 1257 | "Conical2FSParams"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1258 | SkString tName("t"); |
| 1259 | |
| 1260 | GrGLShaderVar center = builder->getUniformVariable(fCenterUni); |
| 1261 | // params.x = A |
| 1262 | // params.y = B |
| 1263 | // params.z = C |
| 1264 | GrGLShaderVar params = builder->getUniformVariable(fParamUni); |
| 1265 | |
| 1266 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
egdaniel | 29bee0f | 2015-04-29 11:54:42 -0700 | [diff] [blame] | 1267 | GrGLFragmentBuilder* fsBuilder = builder->getFragmentShaderBuilder(); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1268 | SkString coords2DString = fsBuilder->ensureFSCoords2D(coords, 0); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 1269 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1270 | |
| 1271 | // output will default to transparent black (we simply won't write anything |
| 1272 | // else to it if invalid, instead of discarding or returning prematurely) |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1273 | fsBuilder->codeAppendf("\t%s = vec4(0.0,0.0,0.0,0.0);\n", outputColor); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1274 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1275 | // p = coords2D |
| 1276 | // e = center end |
| 1277 | // r = radius end |
| 1278 | // A = dot(e, e) - r^2 + 2 * r - 1 |
| 1279 | // B = (r -1) / A |
| 1280 | // C = 1 / A |
| 1281 | // d = dot(e, p) + B |
| 1282 | // t = d +/- sqrt(d^2 - A * dot(p, p) + C) |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1283 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1284 | fsBuilder->codeAppendf("\tfloat pDotp = dot(%s, %s);\n", coords2D, coords2D); |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 1285 | fsBuilder->codeAppendf("\tfloat d = dot(%s, %s) + %s.y;\n", coords2D, center.c_str(), |
| 1286 | params.c_str()); |
| 1287 | fsBuilder->codeAppendf("\tfloat deter = d * d - %s.x * pDotp + %s.z;\n", params.c_str(), |
| 1288 | params.c_str()); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1289 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1290 | // Must check to see if we flipped the circle order (to make sure start radius < end radius) |
| 1291 | // If so we must also flip sign on sqrt |
| 1292 | if (!fIsFlipped) { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1293 | fsBuilder->codeAppendf("\tfloat %s = d + sqrt(deter);\n", tName.c_str()); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1294 | } else { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1295 | fsBuilder->codeAppendf("\tfloat %s = d - sqrt(deter);\n", tName.c_str()); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1296 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1297 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1298 | fsBuilder->codeAppendf("\tif (%s >= %s.w && deter >= 0.0) {\n", tName.c_str(), params.c_str()); |
| 1299 | fsBuilder->codeAppend("\t\t"); |
joshualitt | 60030bc | 2014-11-25 14:21:55 -0800 | [diff] [blame] | 1300 | this->emitColor(builder, ge, tName.c_str(), outputColor, inputColor, samplers); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1301 | fsBuilder->codeAppend("\t}\n"); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1302 | } |
| 1303 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 1304 | void GLCircleOutside2PtConicalEffect::setData(const GrGLProgramDataManager& pdman, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1305 | const GrProcessor& processor) { |
| 1306 | INHERITED::setData(pdman, processor); |
| 1307 | const CircleOutside2PtConicalEffect& data = processor.cast<CircleOutside2PtConicalEffect>(); |
commit-bot@chromium.org | 44d83c1 | 2014-04-21 13:10:25 +0000 | [diff] [blame] | 1308 | SkASSERT(data.isFlipped() == fIsFlipped); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1309 | SkScalar centerX = data.centerX(); |
| 1310 | SkScalar centerY = data.centerY(); |
| 1311 | SkScalar A = data.A(); |
| 1312 | SkScalar B = data.B(); |
| 1313 | SkScalar C = data.C(); |
| 1314 | SkScalar tLimit = data.tLimit(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1315 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1316 | if (fCachedCenterX != centerX || fCachedCenterY != centerY || |
| 1317 | fCachedA != A || fCachedB != B || fCachedC != C || fCachedTLimit != tLimit) { |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1318 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 1319 | pdman.set2f(fCenterUni, SkScalarToFloat(centerX), SkScalarToFloat(centerY)); |
| 1320 | pdman.set4f(fParamUni, SkScalarToFloat(A), SkScalarToFloat(B), SkScalarToFloat(C), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1321 | SkScalarToFloat(tLimit)); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1322 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1323 | fCachedCenterX = centerX; |
| 1324 | fCachedCenterY = centerY; |
| 1325 | fCachedA = A; |
| 1326 | fCachedB = B; |
| 1327 | fCachedC = C; |
| 1328 | fCachedTLimit = tLimit; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1329 | } |
| 1330 | } |
| 1331 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1332 | void GLCircleOutside2PtConicalEffect::GenKey(const GrProcessor& processor, |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 1333 | const GrGLSLCaps&, GrProcessorKeyBuilder* b) { |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 1334 | uint32_t* key = b->add32n(2); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1335 | key[0] = GenBaseGradientKey(processor); |
| 1336 | key[1] = processor.cast<CircleOutside2PtConicalEffect>().isFlipped(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1337 | } |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1338 | |
| 1339 | ////////////////////////////////////////////////////////////////////////////// |
| 1340 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1341 | GrFragmentProcessor* Gr2PtConicalGradientEffect::Create(GrContext* ctx, |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 1342 | GrShaderDataManager* shaderDataManager, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1343 | const SkTwoPointConicalGradient& shader, |
| 1344 | SkShader::TileMode tm, |
| 1345 | const SkMatrix* localMatrix) { |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1346 | SkMatrix matrix; |
| 1347 | if (!shader.getLocalMatrix().invert(&matrix)) { |
| 1348 | return NULL; |
| 1349 | } |
commit-bot@chromium.org | 96fb748 | 2014-05-09 20:28:11 +0000 | [diff] [blame] | 1350 | if (localMatrix) { |
| 1351 | SkMatrix inv; |
| 1352 | if (!localMatrix->invert(&inv)) { |
| 1353 | return NULL; |
| 1354 | } |
| 1355 | matrix.postConcat(inv); |
| 1356 | } |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1357 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1358 | if (shader.getStartRadius() < kErrorTol) { |
| 1359 | SkScalar focalX; |
| 1360 | ConicalType type = set_matrix_focal_conical(shader, &matrix, &focalX); |
| 1361 | if (type == kInside_ConicalType) { |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 1362 | return FocalInside2PtConicalEffect::Create(ctx, shaderDataManager, shader, matrix, tm, |
| 1363 | focalX); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1364 | } else if(type == kEdge_ConicalType) { |
| 1365 | set_matrix_edge_conical(shader, &matrix); |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 1366 | return Edge2PtConicalEffect::Create(ctx, shaderDataManager, shader, matrix, tm); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1367 | } else { |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 1368 | return FocalOutside2PtConicalEffect::Create(ctx, shaderDataManager, shader, matrix, tm, |
| 1369 | focalX); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1370 | } |
| 1371 | } |
| 1372 | |
| 1373 | CircleConicalInfo info; |
| 1374 | ConicalType type = set_matrix_circle_conical(shader, &matrix, &info); |
| 1375 | |
| 1376 | if (type == kInside_ConicalType) { |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 1377 | return CircleInside2PtConicalEffect::Create(ctx, shaderDataManager, shader, matrix, tm, |
| 1378 | info); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1379 | } else if (type == kEdge_ConicalType) { |
| 1380 | set_matrix_edge_conical(shader, &matrix); |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 1381 | return Edge2PtConicalEffect::Create(ctx, shaderDataManager, shader, matrix, tm); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1382 | } else { |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 1383 | return CircleOutside2PtConicalEffect::Create(ctx, shaderDataManager, shader, matrix, tm, |
| 1384 | info); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1385 | } |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1386 | } |
| 1387 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1388 | #endif |