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 | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 14 | #include "gl/builders/GrGLProgramBuilder.h" |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 15 | // For brevity |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 16 | typedef GrGLProgramDataManager::UniformHandle UniformHandle; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 17 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 18 | static const SkScalar kErrorTol = 0.00001f; |
egdaniel | 8405ef9 | 2014-06-09 11:57:28 -0700 | [diff] [blame] | 19 | static const SkScalar kEdgeErrorTol = 5.f * kErrorTol; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 20 | |
| 21 | /** |
| 22 | * We have three general cases for 2pt conical gradients. First we always assume that |
| 23 | * the start radius <= end radius. Our first case (kInside_) is when the start circle |
| 24 | * is completely enclosed by the end circle. The second case (kOutside_) is the case |
| 25 | * when the start circle is either completely outside the end circle or the circles |
| 26 | * overlap. The final case (kEdge_) is when the start circle is inside the end one, |
| 27 | * but the two are just barely touching at 1 point along their edges. |
| 28 | */ |
| 29 | enum ConicalType { |
| 30 | kInside_ConicalType, |
| 31 | kOutside_ConicalType, |
| 32 | kEdge_ConicalType, |
| 33 | }; |
| 34 | |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 35 | ////////////////////////////////////////////////////////////////////////////// |
| 36 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 37 | static void set_matrix_edge_conical(const SkTwoPointConicalGradient& shader, |
| 38 | SkMatrix* invLMatrix) { |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 39 | // Inverse of the current local matrix is passed in then, |
| 40 | // translate to center1, rotate so center2 is on x axis. |
| 41 | const SkPoint& center1 = shader.getStartCenter(); |
| 42 | const SkPoint& center2 = shader.getEndCenter(); |
| 43 | |
| 44 | invLMatrix->postTranslate(-center1.fX, -center1.fY); |
| 45 | |
| 46 | SkPoint diff = center2 - center1; |
| 47 | SkScalar diffLen = diff.length(); |
| 48 | if (0 != diffLen) { |
| 49 | SkScalar invDiffLen = SkScalarInvert(diffLen); |
| 50 | SkMatrix rot; |
| 51 | rot.setSinCos(-SkScalarMul(invDiffLen, diff.fY), |
| 52 | SkScalarMul(invDiffLen, diff.fX)); |
| 53 | invLMatrix->postConcat(rot); |
| 54 | } |
| 55 | } |
| 56 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 57 | class Edge2PtConicalEffect : public GrGradientEffect { |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 58 | public: |
| 59 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 60 | static GrFragmentProcessor* Create(GrContext* ctx, |
| 61 | const SkTwoPointConicalGradient& shader, |
| 62 | const SkMatrix& matrix, |
| 63 | SkShader::TileMode tm) { |
bsalomon | 55fad7a | 2014-07-08 07:34:20 -0700 | [diff] [blame] | 64 | return SkNEW_ARGS(Edge2PtConicalEffect, (ctx, shader, matrix, tm)); |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 65 | } |
| 66 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 67 | virtual ~Edge2PtConicalEffect() {} |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 68 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame^] | 69 | virtual const char* name() const SK_OVERRIDE { |
| 70 | return "Two-Point Conical Gradient Edge Touching"; |
| 71 | } |
| 72 | |
| 73 | virtual void getGLProcessorKey(const GrGLCaps&, GrProcessorKeyBuilder*) const SK_OVERRIDE; |
| 74 | |
| 75 | virtual GrGLFragmentProcessor* createGLInstance() const SK_OVERRIDE; |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 76 | |
| 77 | // The radial gradient parameters can collapse to a linear (instead of quadratic) equation. |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 78 | SkScalar center() const { return fCenterX1; } |
| 79 | SkScalar diffRadius() const { return fDiffRadius; } |
| 80 | SkScalar radius() const { return fRadius0; } |
| 81 | |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 82 | private: |
bsalomon | 0e08fc1 | 2014-10-15 08:19:04 -0700 | [diff] [blame] | 83 | virtual bool onIsEqual(const GrFragmentProcessor& sBase) const SK_OVERRIDE { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 84 | const Edge2PtConicalEffect& s = sBase.cast<Edge2PtConicalEffect>(); |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 85 | return (INHERITED::onIsEqual(sBase) && |
| 86 | this->fCenterX1 == s.fCenterX1 && |
| 87 | this->fRadius0 == s.fRadius0 && |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 88 | this->fDiffRadius == s.fDiffRadius); |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 89 | } |
| 90 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 91 | Edge2PtConicalEffect(GrContext* ctx, |
| 92 | const SkTwoPointConicalGradient& shader, |
| 93 | const SkMatrix& matrix, |
| 94 | SkShader::TileMode tm) |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 95 | : INHERITED(ctx, shader, matrix, tm), |
| 96 | fCenterX1(shader.getCenterX1()), |
| 97 | fRadius0(shader.getStartRadius()), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 98 | fDiffRadius(shader.getDiffRadius()){ |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame^] | 99 | this->initClassID<Edge2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 100 | // 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] | 101 | // 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] | 102 | // start radius was close to zero, otherwise we scaled by the start radius. In addition |
| 103 | // Our test for the edge case in set_matrix_circle_conical has a higher tolerance so we |
| 104 | // need the sqrt value below |
| 105 | SkASSERT(SkScalarAbs(SkScalarAbs(fDiffRadius) - fCenterX1) < |
| 106 | (fRadius0 < kErrorTol ? shader.getEndRadius() * kEdgeErrorTol : |
| 107 | fRadius0 * sqrt(kEdgeErrorTol))); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 108 | |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 109 | // We pass the linear part of the quadratic as a varying. |
| 110 | // float b = -2.0 * (fCenterX1 * x + fRadius0 * fDiffRadius * z) |
| 111 | fBTransform = this->getCoordTransform(); |
| 112 | SkMatrix& bMatrix = *fBTransform.accessMatrix(); |
| 113 | SkScalar r0dr = SkScalarMul(fRadius0, fDiffRadius); |
| 114 | bMatrix[SkMatrix::kMScaleX] = -2 * (SkScalarMul(fCenterX1, bMatrix[SkMatrix::kMScaleX]) + |
| 115 | SkScalarMul(r0dr, bMatrix[SkMatrix::kMPersp0])); |
| 116 | bMatrix[SkMatrix::kMSkewX] = -2 * (SkScalarMul(fCenterX1, bMatrix[SkMatrix::kMSkewX]) + |
| 117 | SkScalarMul(r0dr, bMatrix[SkMatrix::kMPersp1])); |
| 118 | bMatrix[SkMatrix::kMTransX] = -2 * (SkScalarMul(fCenterX1, bMatrix[SkMatrix::kMTransX]) + |
| 119 | SkScalarMul(r0dr, bMatrix[SkMatrix::kMPersp2])); |
| 120 | this->addCoordTransform(&fBTransform); |
| 121 | } |
| 122 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 123 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 124 | |
| 125 | // @{ |
| 126 | // Cache of values - these can change arbitrarily, EXCEPT |
| 127 | // we shouldn't change between degenerate and non-degenerate?! |
| 128 | |
| 129 | GrCoordTransform fBTransform; |
| 130 | SkScalar fCenterX1; |
| 131 | SkScalar fRadius0; |
| 132 | SkScalar fDiffRadius; |
| 133 | |
| 134 | // @} |
| 135 | |
| 136 | typedef GrGradientEffect INHERITED; |
| 137 | }; |
| 138 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 139 | class GLEdge2PtConicalEffect : public GrGLGradientEffect { |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 140 | public: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame^] | 141 | GLEdge2PtConicalEffect(const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 142 | virtual ~GLEdge2PtConicalEffect() { } |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 143 | |
joshualitt | 1598899 | 2014-10-09 15:04:05 -0700 | [diff] [blame] | 144 | virtual void emitCode(GrGLFPBuilder*, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 145 | const GrFragmentProcessor&, |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 146 | const char* outputColor, |
| 147 | const char* inputColor, |
| 148 | const TransformedCoordsArray&, |
| 149 | const TextureSamplerArray&) SK_OVERRIDE; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 150 | virtual void setData(const GrGLProgramDataManager&, const GrProcessor&) SK_OVERRIDE; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 151 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 152 | static void GenKey(const GrProcessor&, const GrGLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 153 | |
| 154 | protected: |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 155 | UniformHandle fParamUni; |
| 156 | |
| 157 | const char* fVSVaryingName; |
| 158 | const char* fFSVaryingName; |
| 159 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 160 | // @{ |
| 161 | /// Values last uploaded as uniforms |
| 162 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 163 | SkScalar fCachedRadius; |
| 164 | SkScalar fCachedDiffRadius; |
| 165 | |
| 166 | // @} |
| 167 | |
| 168 | private: |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 169 | typedef GrGLGradientEffect INHERITED; |
| 170 | |
| 171 | }; |
| 172 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame^] | 173 | void Edge2PtConicalEffect::getGLProcessorKey(const GrGLCaps& caps, |
| 174 | GrProcessorKeyBuilder* b) const { |
| 175 | GLEdge2PtConicalEffect::GenKey(*this, caps, b); |
| 176 | } |
| 177 | |
| 178 | GrGLFragmentProcessor* Edge2PtConicalEffect::createGLInstance() const { |
| 179 | return SkNEW_ARGS(GLEdge2PtConicalEffect, (*this)); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 180 | } |
skia.committer@gmail.com | 221b911 | 2014-04-04 03:04:32 +0000 | [diff] [blame] | 181 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 182 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(Edge2PtConicalEffect); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 183 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 184 | /* |
| 185 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 186 | */ |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 187 | GrFragmentProcessor* Edge2PtConicalEffect::TestCreate(SkRandom* random, |
| 188 | GrContext* context, |
| 189 | const GrDrawTargetCaps&, |
| 190 | GrTexture**) { |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 191 | SkPoint center1 = {random->nextUScalar1(), random->nextUScalar1()}; |
| 192 | SkScalar radius1 = random->nextUScalar1(); |
| 193 | SkPoint center2; |
| 194 | SkScalar radius2; |
| 195 | do { |
| 196 | center2.set(random->nextUScalar1(), random->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; |
| 211 | int colorCount = RandomGradientParams(random, colors, &stops, &tm); |
| 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 | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 219 | SkAssertResult(shader->asFragmentProcessor(context, paint, NULL, &paintColor, &fp)); |
| 220 | return fp; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 221 | } |
| 222 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame^] | 223 | GLEdge2PtConicalEffect::GLEdge2PtConicalEffect(const GrProcessor&) |
| 224 | : fVSVaryingName(NULL) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 225 | , fFSVaryingName(NULL) |
| 226 | , fCachedRadius(-SK_ScalarMax) |
| 227 | , fCachedDiffRadius(-SK_ScalarMax) {} |
| 228 | |
joshualitt | 1598899 | 2014-10-09 15:04:05 -0700 | [diff] [blame] | 229 | void GLEdge2PtConicalEffect::emitCode(GrGLFPBuilder* builder, |
joshualitt | 60030bc | 2014-11-25 14:21:55 -0800 | [diff] [blame] | 230 | const GrFragmentProcessor& fp, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 231 | const char* outputColor, |
| 232 | const char* inputColor, |
| 233 | const TransformedCoordsArray& coords, |
| 234 | const TextureSamplerArray& samplers) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame^] | 235 | const Edge2PtConicalEffect& ge = fp.cast<Edge2PtConicalEffect>(); |
joshualitt | 60030bc | 2014-11-25 14:21:55 -0800 | [diff] [blame] | 236 | this->emitUniforms(builder, ge); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 237 | fParamUni = builder->addUniformArray(GrGLProgramBuilder::kFragment_Visibility, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 238 | kFloat_GrSLType, "Conical2FSParams", 3); |
| 239 | |
| 240 | SkString cName("c"); |
| 241 | SkString tName("t"); |
| 242 | SkString p0; // start radius |
| 243 | SkString p1; // start radius squared |
| 244 | SkString p2; // difference in radii (r1 - r0) |
| 245 | |
| 246 | builder->getUniformVariable(fParamUni).appendArrayAccess(0, &p0); |
| 247 | builder->getUniformVariable(fParamUni).appendArrayAccess(1, &p1); |
| 248 | builder->getUniformVariable(fParamUni).appendArrayAccess(2, &p2); |
| 249 | |
| 250 | // We interpolate the linear component in coords[1]. |
joshualitt | 23e280d | 2014-09-18 12:26:38 -0700 | [diff] [blame] | 251 | SkASSERT(coords[0].getType() == coords[1].getType()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 252 | const char* coords2D; |
| 253 | SkString bVar; |
joshualitt | 1598899 | 2014-10-09 15:04:05 -0700 | [diff] [blame] | 254 | GrGLFPFragmentBuilder* fsBuilder = builder->getFragmentShaderBuilder(); |
joshualitt | 23e280d | 2014-09-18 12:26:38 -0700 | [diff] [blame] | 255 | if (kVec3f_GrSLType == coords[0].getType()) { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 256 | 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] | 257 | coords[0].c_str(), coords[0].c_str(), coords[1].c_str(), |
| 258 | coords[1].c_str()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 259 | coords2D = "interpolants.xy"; |
| 260 | bVar = "interpolants.z"; |
| 261 | } else { |
| 262 | coords2D = coords[0].c_str(); |
| 263 | bVar.printf("%s.x", coords[1].c_str()); |
| 264 | } |
| 265 | |
| 266 | // output will default to transparent black (we simply won't write anything |
| 267 | // else to it if invalid, instead of discarding or returning prematurely) |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 268 | 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] | 269 | |
| 270 | // c = (x^2)+(y^2) - params[1] |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 271 | fsBuilder->codeAppendf("\tfloat %s = dot(%s, %s) - %s;\n", |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 272 | cName.c_str(), coords2D, coords2D, p1.c_str()); |
| 273 | |
| 274 | // linear case: t = -c/b |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 275 | fsBuilder->codeAppendf("\tfloat %s = -(%s / %s);\n", tName.c_str(), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 276 | cName.c_str(), bVar.c_str()); |
| 277 | |
| 278 | // if r(t) > 0, then t will be the x coordinate |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 279 | 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] | 280 | p2.c_str(), p0.c_str()); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 281 | fsBuilder->codeAppend("\t"); |
joshualitt | 60030bc | 2014-11-25 14:21:55 -0800 | [diff] [blame] | 282 | this->emitColor(builder, ge, tName.c_str(), outputColor, inputColor, samplers); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 283 | fsBuilder->codeAppend("\t}\n"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 284 | } |
| 285 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 286 | void GLEdge2PtConicalEffect::setData(const GrGLProgramDataManager& pdman, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 287 | const GrProcessor& processor) { |
| 288 | INHERITED::setData(pdman, processor); |
| 289 | const Edge2PtConicalEffect& data = processor.cast<Edge2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 290 | SkScalar radius0 = data.radius(); |
| 291 | SkScalar diffRadius = data.diffRadius(); |
| 292 | |
| 293 | if (fCachedRadius != radius0 || |
| 294 | fCachedDiffRadius != diffRadius) { |
| 295 | |
| 296 | float values[3] = { |
| 297 | SkScalarToFloat(radius0), |
| 298 | SkScalarToFloat(SkScalarMul(radius0, radius0)), |
| 299 | SkScalarToFloat(diffRadius) |
| 300 | }; |
| 301 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 302 | pdman.set1fv(fParamUni, 3, values); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 303 | fCachedRadius = radius0; |
| 304 | fCachedDiffRadius = diffRadius; |
| 305 | } |
| 306 | } |
| 307 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 308 | void GLEdge2PtConicalEffect::GenKey(const GrProcessor& processor, |
| 309 | const GrGLCaps&, GrProcessorKeyBuilder* b) { |
| 310 | b->add32(GenBaseGradientKey(processor)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 311 | } |
| 312 | |
| 313 | ////////////////////////////////////////////////////////////////////////////// |
| 314 | // Focal Conical Gradients |
| 315 | ////////////////////////////////////////////////////////////////////////////// |
| 316 | |
| 317 | static ConicalType set_matrix_focal_conical(const SkTwoPointConicalGradient& shader, |
| 318 | SkMatrix* invLMatrix, SkScalar* focalX) { |
| 319 | // Inverse of the current local matrix is passed in then, |
| 320 | // translate, scale, and rotate such that endCircle is unit circle on x-axis, |
| 321 | // and focal point is at the origin. |
| 322 | ConicalType conicalType; |
| 323 | const SkPoint& focal = shader.getStartCenter(); |
| 324 | const SkPoint& centerEnd = shader.getEndCenter(); |
| 325 | SkScalar radius = shader.getEndRadius(); |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 326 | SkScalar invRadius = 1.f / radius; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 327 | |
| 328 | SkMatrix matrix; |
| 329 | |
| 330 | matrix.setTranslate(-centerEnd.fX, -centerEnd.fY); |
| 331 | matrix.postScale(invRadius, invRadius); |
| 332 | |
| 333 | SkPoint focalTrans; |
| 334 | matrix.mapPoints(&focalTrans, &focal, 1); |
| 335 | *focalX = focalTrans.length(); |
| 336 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 337 | if (0.f != *focalX) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 338 | SkScalar invFocalX = SkScalarInvert(*focalX); |
| 339 | SkMatrix rot; |
| 340 | rot.setSinCos(-SkScalarMul(invFocalX, focalTrans.fY), |
| 341 | SkScalarMul(invFocalX, focalTrans.fX)); |
| 342 | matrix.postConcat(rot); |
| 343 | } |
| 344 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 345 | matrix.postTranslate(-(*focalX), 0.f); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 346 | |
| 347 | // If the focal point is touching the edge of the circle it will |
| 348 | // cause a degenerate case that must be handled separately |
egdaniel | 8405ef9 | 2014-06-09 11:57:28 -0700 | [diff] [blame] | 349 | // kEdgeErrorTol = 5 * kErrorTol was picked after manual testing the |
| 350 | // stability trade off versus the linear approx used in the Edge Shader |
| 351 | if (SkScalarAbs(1.f - (*focalX)) < kEdgeErrorTol) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 352 | return kEdge_ConicalType; |
| 353 | } |
| 354 | |
| 355 | // Scale factor 1 / (1 - focalX * focalX) |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 356 | SkScalar oneMinusF2 = 1.f - SkScalarMul(*focalX, *focalX); |
| 357 | SkScalar s = SkScalarDiv(1.f, oneMinusF2); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 358 | |
| 359 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 360 | if (s >= 0.f) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 361 | conicalType = kInside_ConicalType; |
| 362 | matrix.postScale(s, s * SkScalarSqrt(oneMinusF2)); |
| 363 | } else { |
| 364 | conicalType = kOutside_ConicalType; |
| 365 | matrix.postScale(s, s); |
| 366 | } |
| 367 | |
| 368 | invLMatrix->postConcat(matrix); |
| 369 | |
| 370 | return conicalType; |
| 371 | } |
| 372 | |
| 373 | ////////////////////////////////////////////////////////////////////////////// |
| 374 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 375 | class FocalOutside2PtConicalEffect : public GrGradientEffect { |
| 376 | public: |
| 377 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 378 | static GrFragmentProcessor* Create(GrContext* ctx, |
| 379 | const SkTwoPointConicalGradient& shader, |
| 380 | const SkMatrix& matrix, |
| 381 | SkShader::TileMode tm, |
| 382 | SkScalar focalX) { |
bsalomon | 55fad7a | 2014-07-08 07:34:20 -0700 | [diff] [blame] | 383 | return SkNEW_ARGS(FocalOutside2PtConicalEffect, (ctx, shader, matrix, tm, focalX)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 384 | } |
| 385 | |
| 386 | virtual ~FocalOutside2PtConicalEffect() { } |
| 387 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame^] | 388 | virtual const char* name() const SK_OVERRIDE { |
| 389 | return "Two-Point Conical Gradient Focal Outside"; |
| 390 | } |
| 391 | |
| 392 | virtual void getGLProcessorKey(const GrGLCaps&, GrProcessorKeyBuilder*) const SK_OVERRIDE; |
| 393 | |
| 394 | virtual GrGLFragmentProcessor* createGLInstance() const SK_OVERRIDE; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 395 | |
| 396 | bool isFlipped() const { return fIsFlipped; } |
| 397 | SkScalar focal() const { return fFocalX; } |
| 398 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 399 | private: |
bsalomon | 0e08fc1 | 2014-10-15 08:19:04 -0700 | [diff] [blame] | 400 | virtual bool onIsEqual(const GrFragmentProcessor& sBase) const SK_OVERRIDE { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 401 | const FocalOutside2PtConicalEffect& s = sBase.cast<FocalOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 402 | return (INHERITED::onIsEqual(sBase) && |
| 403 | this->fFocalX == s.fFocalX && |
| 404 | this->fIsFlipped == s.fIsFlipped); |
| 405 | } |
| 406 | |
| 407 | FocalOutside2PtConicalEffect(GrContext* ctx, |
| 408 | const SkTwoPointConicalGradient& shader, |
| 409 | const SkMatrix& matrix, |
| 410 | SkShader::TileMode tm, |
| 411 | SkScalar focalX) |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame^] | 412 | : INHERITED(ctx, shader, matrix, tm), fFocalX(focalX), fIsFlipped(shader.isFlippedGrad()) { |
| 413 | this->initClassID<FocalOutside2PtConicalEffect>(); |
| 414 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 415 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 416 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 417 | |
| 418 | SkScalar fFocalX; |
| 419 | bool fIsFlipped; |
| 420 | |
| 421 | typedef GrGradientEffect INHERITED; |
| 422 | }; |
| 423 | |
| 424 | class GLFocalOutside2PtConicalEffect : public GrGLGradientEffect { |
| 425 | public: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame^] | 426 | GLFocalOutside2PtConicalEffect(const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 427 | virtual ~GLFocalOutside2PtConicalEffect() { } |
| 428 | |
joshualitt | 1598899 | 2014-10-09 15:04:05 -0700 | [diff] [blame] | 429 | virtual void emitCode(GrGLFPBuilder*, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 430 | const GrFragmentProcessor&, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 431 | const char* outputColor, |
| 432 | const char* inputColor, |
| 433 | const TransformedCoordsArray&, |
| 434 | const TextureSamplerArray&) SK_OVERRIDE; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 435 | virtual void setData(const GrGLProgramDataManager&, const GrProcessor&) SK_OVERRIDE; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 436 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 437 | static void GenKey(const GrProcessor&, const GrGLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 438 | |
| 439 | protected: |
| 440 | UniformHandle fParamUni; |
| 441 | |
| 442 | const char* fVSVaryingName; |
| 443 | const char* fFSVaryingName; |
| 444 | |
| 445 | bool fIsFlipped; |
| 446 | |
| 447 | // @{ |
| 448 | /// Values last uploaded as uniforms |
| 449 | |
| 450 | SkScalar fCachedFocal; |
| 451 | |
| 452 | // @} |
| 453 | |
| 454 | private: |
| 455 | typedef GrGLGradientEffect INHERITED; |
| 456 | |
| 457 | }; |
| 458 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame^] | 459 | void FocalOutside2PtConicalEffect::getGLProcessorKey(const GrGLCaps& caps, |
| 460 | GrProcessorKeyBuilder* b) const { |
| 461 | GLFocalOutside2PtConicalEffect::GenKey(*this, caps, b); |
| 462 | } |
| 463 | |
| 464 | GrGLFragmentProcessor* FocalOutside2PtConicalEffect::createGLInstance() const { |
| 465 | return SkNEW_ARGS(GLFocalOutside2PtConicalEffect, (*this)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 466 | } |
| 467 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 468 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(FocalOutside2PtConicalEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 469 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 470 | /* |
| 471 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 472 | */ |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 473 | GrFragmentProcessor* FocalOutside2PtConicalEffect::TestCreate(SkRandom* random, |
| 474 | GrContext* context, |
| 475 | const GrDrawTargetCaps&, |
| 476 | GrTexture**) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 477 | SkPoint center1 = {random->nextUScalar1(), random->nextUScalar1()}; |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 478 | SkScalar radius1 = 0.f; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 479 | SkPoint center2; |
| 480 | SkScalar radius2; |
| 481 | do { |
| 482 | center2.set(random->nextUScalar1(), random->nextUScalar1()); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 483 | // 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] | 484 | } while (center1 == center2); |
| 485 | SkPoint diff = center2 - center1; |
| 486 | SkScalar diffLen = diff.length(); |
| 487 | // Below makes sure that the focal point is not contained within circle two |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 488 | radius2 = random->nextRangeF(0.f, diffLen); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 489 | |
| 490 | SkColor colors[kMaxRandomGradientColors]; |
| 491 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 492 | SkScalar* stops = stopsArray; |
| 493 | SkShader::TileMode tm; |
| 494 | int colorCount = RandomGradientParams(random, colors, &stops, &tm); |
| 495 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 496 | center2, radius2, |
| 497 | colors, stops, colorCount, |
| 498 | tm)); |
| 499 | SkPaint paint; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 500 | GrFragmentProcessor* effect; |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 501 | GrColor paintColor; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 502 | SkAssertResult(shader->asFragmentProcessor(context, paint, NULL, &paintColor, &effect)); |
dandov | 9de5b51 | 2014-06-10 14:38:28 -0700 | [diff] [blame] | 503 | return effect; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 504 | } |
| 505 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame^] | 506 | GLFocalOutside2PtConicalEffect::GLFocalOutside2PtConicalEffect(const GrProcessor& processor) |
| 507 | : fVSVaryingName(NULL) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 508 | , fFSVaryingName(NULL) |
| 509 | , fCachedFocal(SK_ScalarMax) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 510 | const FocalOutside2PtConicalEffect& data = processor.cast<FocalOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 511 | fIsFlipped = data.isFlipped(); |
| 512 | } |
| 513 | |
joshualitt | 1598899 | 2014-10-09 15:04:05 -0700 | [diff] [blame] | 514 | void GLFocalOutside2PtConicalEffect::emitCode(GrGLFPBuilder* builder, |
joshualitt | 60030bc | 2014-11-25 14:21:55 -0800 | [diff] [blame] | 515 | const GrFragmentProcessor& fp, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 516 | const char* outputColor, |
| 517 | const char* inputColor, |
| 518 | const TransformedCoordsArray& coords, |
| 519 | const TextureSamplerArray& samplers) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame^] | 520 | const FocalOutside2PtConicalEffect& ge = fp.cast<FocalOutside2PtConicalEffect>(); |
joshualitt | 60030bc | 2014-11-25 14:21:55 -0800 | [diff] [blame] | 521 | this->emitUniforms(builder, ge); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 522 | fParamUni = builder->addUniformArray(GrGLProgramBuilder::kFragment_Visibility, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 523 | kFloat_GrSLType, "Conical2FSParams", 2); |
| 524 | SkString tName("t"); |
| 525 | SkString p0; // focalX |
| 526 | SkString p1; // 1 - focalX * focalX |
| 527 | |
| 528 | builder->getUniformVariable(fParamUni).appendArrayAccess(0, &p0); |
| 529 | builder->getUniformVariable(fParamUni).appendArrayAccess(1, &p1); |
| 530 | |
| 531 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
joshualitt | 1598899 | 2014-10-09 15:04:05 -0700 | [diff] [blame] | 532 | GrGLFPFragmentBuilder* fsBuilder = builder->getFragmentShaderBuilder(); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 533 | SkString coords2DString = fsBuilder->ensureFSCoords2D(coords, 0); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 534 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 535 | |
| 536 | // t = p.x * focal.x +/- sqrt(p.x^2 + (1 - focal.x^2) * p.y^2) |
| 537 | |
| 538 | // output will default to transparent black (we simply won't write anything |
| 539 | // else to it if invalid, instead of discarding or returning prematurely) |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 540 | 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] | 541 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 542 | fsBuilder->codeAppendf("\tfloat xs = %s.x * %s.x;\n", coords2D, coords2D); |
| 543 | fsBuilder->codeAppendf("\tfloat ys = %s.y * %s.y;\n", coords2D, coords2D); |
| 544 | 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] | 545 | |
| 546 | // Must check to see if we flipped the circle order (to make sure start radius < end radius) |
| 547 | // If so we must also flip sign on sqrt |
| 548 | if (!fIsFlipped) { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 549 | 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] | 550 | coords2D, p0.c_str()); |
| 551 | } else { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 552 | 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] | 553 | coords2D, p0.c_str()); |
| 554 | } |
| 555 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 556 | fsBuilder->codeAppendf("\tif (%s >= 0.0 && d >= 0.0) {\n", tName.c_str()); |
| 557 | fsBuilder->codeAppend("\t\t"); |
joshualitt | 60030bc | 2014-11-25 14:21:55 -0800 | [diff] [blame] | 558 | this->emitColor(builder, ge, tName.c_str(), outputColor, inputColor, samplers); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 559 | fsBuilder->codeAppend("\t}\n"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 560 | } |
| 561 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 562 | void GLFocalOutside2PtConicalEffect::setData(const GrGLProgramDataManager& pdman, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 563 | const GrProcessor& processor) { |
| 564 | INHERITED::setData(pdman, processor); |
| 565 | const FocalOutside2PtConicalEffect& data = processor.cast<FocalOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 566 | SkASSERT(data.isFlipped() == fIsFlipped); |
| 567 | SkScalar focal = data.focal(); |
| 568 | |
| 569 | if (fCachedFocal != focal) { |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 570 | SkScalar oneMinus2F = 1.f - SkScalarMul(focal, focal); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 571 | |
| 572 | float values[2] = { |
| 573 | SkScalarToFloat(focal), |
| 574 | SkScalarToFloat(oneMinus2F), |
| 575 | }; |
| 576 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 577 | pdman.set1fv(fParamUni, 2, values); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 578 | fCachedFocal = focal; |
| 579 | } |
| 580 | } |
| 581 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 582 | void GLFocalOutside2PtConicalEffect::GenKey(const GrProcessor& processor, |
| 583 | const GrGLCaps&, GrProcessorKeyBuilder* b) { |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 584 | uint32_t* key = b->add32n(2); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 585 | key[0] = GenBaseGradientKey(processor); |
| 586 | key[1] = processor.cast<FocalOutside2PtConicalEffect>().isFlipped(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 587 | } |
| 588 | |
| 589 | ////////////////////////////////////////////////////////////////////////////// |
| 590 | |
| 591 | class GLFocalInside2PtConicalEffect; |
| 592 | |
| 593 | class FocalInside2PtConicalEffect : public GrGradientEffect { |
| 594 | public: |
| 595 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 596 | static GrFragmentProcessor* Create(GrContext* ctx, |
| 597 | const SkTwoPointConicalGradient& shader, |
| 598 | const SkMatrix& matrix, |
| 599 | SkShader::TileMode tm, |
| 600 | SkScalar focalX) { |
bsalomon | 55fad7a | 2014-07-08 07:34:20 -0700 | [diff] [blame] | 601 | return SkNEW_ARGS(FocalInside2PtConicalEffect, (ctx, shader, matrix, tm, focalX)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 602 | } |
| 603 | |
| 604 | virtual ~FocalInside2PtConicalEffect() {} |
| 605 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame^] | 606 | virtual const char* name() const SK_OVERRIDE { |
| 607 | return "Two-Point Conical Gradient Focal Inside"; |
| 608 | } |
| 609 | |
| 610 | virtual void getGLProcessorKey(const GrGLCaps&, GrProcessorKeyBuilder*) const SK_OVERRIDE; |
| 611 | |
| 612 | virtual GrGLFragmentProcessor* createGLInstance() const SK_OVERRIDE; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 613 | |
| 614 | SkScalar focal() const { return fFocalX; } |
| 615 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 616 | typedef GLFocalInside2PtConicalEffect GLProcessor; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 617 | |
| 618 | private: |
bsalomon | 0e08fc1 | 2014-10-15 08:19:04 -0700 | [diff] [blame] | 619 | virtual bool onIsEqual(const GrFragmentProcessor& sBase) const SK_OVERRIDE { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 620 | const FocalInside2PtConicalEffect& s = sBase.cast<FocalInside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 621 | return (INHERITED::onIsEqual(sBase) && |
| 622 | this->fFocalX == s.fFocalX); |
| 623 | } |
| 624 | |
| 625 | FocalInside2PtConicalEffect(GrContext* ctx, |
| 626 | const SkTwoPointConicalGradient& shader, |
| 627 | const SkMatrix& matrix, |
| 628 | SkShader::TileMode tm, |
| 629 | SkScalar focalX) |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame^] | 630 | : INHERITED(ctx, shader, matrix, tm), fFocalX(focalX) { |
| 631 | this->initClassID<FocalInside2PtConicalEffect>(); |
| 632 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 633 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 634 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 635 | |
| 636 | SkScalar fFocalX; |
| 637 | |
| 638 | typedef GrGradientEffect INHERITED; |
| 639 | }; |
| 640 | |
| 641 | class GLFocalInside2PtConicalEffect : public GrGLGradientEffect { |
| 642 | public: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame^] | 643 | GLFocalInside2PtConicalEffect(const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 644 | virtual ~GLFocalInside2PtConicalEffect() {} |
| 645 | |
joshualitt | 1598899 | 2014-10-09 15:04:05 -0700 | [diff] [blame] | 646 | virtual void emitCode(GrGLFPBuilder*, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 647 | const GrFragmentProcessor&, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 648 | const char* outputColor, |
| 649 | const char* inputColor, |
| 650 | const TransformedCoordsArray&, |
| 651 | const TextureSamplerArray&) SK_OVERRIDE; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 652 | virtual void setData(const GrGLProgramDataManager&, const GrProcessor&) SK_OVERRIDE; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 653 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 654 | static void GenKey(const GrProcessor&, const GrGLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 655 | |
| 656 | protected: |
| 657 | UniformHandle fFocalUni; |
| 658 | |
| 659 | const char* fVSVaryingName; |
| 660 | const char* fFSVaryingName; |
| 661 | |
| 662 | // @{ |
| 663 | /// Values last uploaded as uniforms |
| 664 | |
| 665 | SkScalar fCachedFocal; |
| 666 | |
| 667 | // @} |
| 668 | |
| 669 | private: |
| 670 | typedef GrGLGradientEffect INHERITED; |
| 671 | |
| 672 | }; |
| 673 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame^] | 674 | void FocalInside2PtConicalEffect::getGLProcessorKey(const GrGLCaps& caps, |
| 675 | GrProcessorKeyBuilder* b) const { |
| 676 | GLFocalInside2PtConicalEffect::GenKey(*this, caps, b); |
| 677 | } |
| 678 | |
| 679 | GrGLFragmentProcessor* FocalInside2PtConicalEffect::createGLInstance() const { |
| 680 | return SkNEW_ARGS(GLFocalInside2PtConicalEffect, (*this)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 681 | } |
| 682 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 683 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(FocalInside2PtConicalEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 684 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 685 | /* |
| 686 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 687 | */ |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 688 | GrFragmentProcessor* FocalInside2PtConicalEffect::TestCreate(SkRandom* random, |
| 689 | GrContext* context, |
| 690 | const GrDrawTargetCaps&, |
| 691 | GrTexture**) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 692 | SkPoint center1 = {random->nextUScalar1(), random->nextUScalar1()}; |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 693 | SkScalar radius1 = 0.f; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 694 | SkPoint center2; |
| 695 | SkScalar radius2; |
| 696 | do { |
| 697 | center2.set(random->nextUScalar1(), random->nextUScalar1()); |
| 698 | // Below makes sure radius2 is larger enouch such that the focal point |
| 699 | // is inside the end circle |
| 700 | SkScalar increase = random->nextUScalar1(); |
| 701 | SkPoint diff = center2 - center1; |
| 702 | SkScalar diffLen = diff.length(); |
| 703 | radius2 = diffLen + increase; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 704 | // If the circles are identical the factory will give us an empty shader. |
| 705 | } while (radius1 == radius2 && center1 == center2); |
| 706 | |
| 707 | SkColor colors[kMaxRandomGradientColors]; |
| 708 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 709 | SkScalar* stops = stopsArray; |
| 710 | SkShader::TileMode tm; |
| 711 | int colorCount = RandomGradientParams(random, colors, &stops, &tm); |
| 712 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 713 | center2, radius2, |
| 714 | colors, stops, colorCount, |
| 715 | tm)); |
| 716 | SkPaint paint; |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 717 | GrColor paintColor; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 718 | GrFragmentProcessor* fp; |
| 719 | SkAssertResult(shader->asFragmentProcessor(context, paint, NULL, &paintColor, &fp)); |
| 720 | return fp; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 721 | } |
| 722 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame^] | 723 | GLFocalInside2PtConicalEffect::GLFocalInside2PtConicalEffect(const GrProcessor&) |
| 724 | : fVSVaryingName(NULL) |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 725 | , fFSVaryingName(NULL) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 726 | , fCachedFocal(SK_ScalarMax) {} |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 727 | |
joshualitt | 1598899 | 2014-10-09 15:04:05 -0700 | [diff] [blame] | 728 | void GLFocalInside2PtConicalEffect::emitCode(GrGLFPBuilder* builder, |
joshualitt | 60030bc | 2014-11-25 14:21:55 -0800 | [diff] [blame] | 729 | const GrFragmentProcessor& fp, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 730 | const char* outputColor, |
| 731 | const char* inputColor, |
| 732 | const TransformedCoordsArray& coords, |
| 733 | const TextureSamplerArray& samplers) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame^] | 734 | const FocalInside2PtConicalEffect& ge = fp.cast<FocalInside2PtConicalEffect>(); |
joshualitt | 60030bc | 2014-11-25 14:21:55 -0800 | [diff] [blame] | 735 | this->emitUniforms(builder, ge); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 736 | fFocalUni = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 737 | kFloat_GrSLType, "Conical2FSParams"); |
| 738 | SkString tName("t"); |
| 739 | |
| 740 | // this is the distance along x-axis from the end center to focal point in |
| 741 | // transformed coordinates |
| 742 | GrGLShaderVar focal = builder->getUniformVariable(fFocalUni); |
| 743 | |
| 744 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
joshualitt | 1598899 | 2014-10-09 15:04:05 -0700 | [diff] [blame] | 745 | GrGLFPFragmentBuilder* fsBuilder = builder->getFragmentShaderBuilder(); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 746 | SkString coords2DString = fsBuilder->ensureFSCoords2D(coords, 0); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 747 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 748 | |
| 749 | // t = p.x * focalX + length(p) |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 750 | 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] | 751 | coords2D, focal.c_str(), coords2D); |
| 752 | |
joshualitt | 60030bc | 2014-11-25 14:21:55 -0800 | [diff] [blame] | 753 | this->emitColor(builder, ge, tName.c_str(), outputColor, inputColor, samplers); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 754 | } |
| 755 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 756 | void GLFocalInside2PtConicalEffect::setData(const GrGLProgramDataManager& pdman, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 757 | const GrProcessor& processor) { |
| 758 | INHERITED::setData(pdman, processor); |
| 759 | const FocalInside2PtConicalEffect& data = processor.cast<FocalInside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 760 | SkScalar focal = data.focal(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 761 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 762 | if (fCachedFocal != focal) { |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 763 | pdman.set1f(fFocalUni, SkScalarToFloat(focal)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 764 | fCachedFocal = focal; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 765 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 766 | } |
| 767 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 768 | void GLFocalInside2PtConicalEffect::GenKey(const GrProcessor& processor, |
| 769 | const GrGLCaps&, GrProcessorKeyBuilder* b) { |
| 770 | b->add32(GenBaseGradientKey(processor)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 771 | } |
| 772 | |
| 773 | ////////////////////////////////////////////////////////////////////////////// |
| 774 | // Circle Conical Gradients |
| 775 | ////////////////////////////////////////////////////////////////////////////// |
| 776 | |
| 777 | struct CircleConicalInfo { |
| 778 | SkPoint fCenterEnd; |
| 779 | SkScalar fA; |
| 780 | SkScalar fB; |
| 781 | SkScalar fC; |
| 782 | }; |
| 783 | |
| 784 | // Returns focal distance along x-axis in transformed coords |
| 785 | static ConicalType set_matrix_circle_conical(const SkTwoPointConicalGradient& shader, |
| 786 | SkMatrix* invLMatrix, CircleConicalInfo* info) { |
| 787 | // Inverse of the current local matrix is passed in then, |
| 788 | // translate and scale such that start circle is on the origin and has radius 1 |
| 789 | const SkPoint& centerStart = shader.getStartCenter(); |
| 790 | const SkPoint& centerEnd = shader.getEndCenter(); |
| 791 | SkScalar radiusStart = shader.getStartRadius(); |
| 792 | SkScalar radiusEnd = shader.getEndRadius(); |
| 793 | |
| 794 | SkMatrix matrix; |
| 795 | |
| 796 | matrix.setTranslate(-centerStart.fX, -centerStart.fY); |
| 797 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 798 | SkScalar invStartRad = 1.f / radiusStart; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 799 | matrix.postScale(invStartRad, invStartRad); |
| 800 | |
| 801 | radiusEnd /= radiusStart; |
| 802 | |
| 803 | SkPoint centerEndTrans; |
| 804 | matrix.mapPoints(¢erEndTrans, ¢erEnd, 1); |
| 805 | |
| 806 | SkScalar A = centerEndTrans.fX * centerEndTrans.fX + centerEndTrans.fY * centerEndTrans.fY |
| 807 | - radiusEnd * radiusEnd + 2 * radiusEnd - 1; |
| 808 | |
| 809 | // Check to see if start circle is inside end circle with edges touching. |
| 810 | // 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] | 811 | // to the edge shader. kEdgeErrorTol = 5 * kErrorTol was picked after manual testing |
| 812 | // so that C = 1 / A is stable, and the linear approximation used in the Edge shader is |
| 813 | // still accurate. |
| 814 | if (SkScalarAbs(A) < kEdgeErrorTol) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 815 | return kEdge_ConicalType; |
| 816 | } |
| 817 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 818 | SkScalar C = 1.f / A; |
| 819 | SkScalar B = (radiusEnd - 1.f) * C; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 820 | |
| 821 | matrix.postScale(C, C); |
| 822 | |
| 823 | invLMatrix->postConcat(matrix); |
| 824 | |
| 825 | info->fCenterEnd = centerEndTrans; |
| 826 | info->fA = A; |
| 827 | info->fB = B; |
| 828 | info->fC = C; |
| 829 | |
| 830 | // 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] | 831 | if (A < 0.f) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 832 | return kInside_ConicalType; |
| 833 | } |
| 834 | return kOutside_ConicalType; |
| 835 | } |
| 836 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 837 | class CircleInside2PtConicalEffect : public GrGradientEffect { |
| 838 | public: |
| 839 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 840 | static GrFragmentProcessor* Create(GrContext* ctx, |
| 841 | const SkTwoPointConicalGradient& shader, |
| 842 | const SkMatrix& matrix, |
| 843 | SkShader::TileMode tm, |
| 844 | const CircleConicalInfo& info) { |
bsalomon | 55fad7a | 2014-07-08 07:34:20 -0700 | [diff] [blame] | 845 | return SkNEW_ARGS(CircleInside2PtConicalEffect, (ctx, shader, matrix, tm, info)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 846 | } |
| 847 | |
| 848 | virtual ~CircleInside2PtConicalEffect() {} |
| 849 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame^] | 850 | virtual const char* name() const SK_OVERRIDE { return "Two-Point Conical Gradient Inside"; } |
| 851 | |
| 852 | virtual void getGLProcessorKey(const GrGLCaps& caps, |
| 853 | GrProcessorKeyBuilder* b) const SK_OVERRIDE; |
| 854 | |
| 855 | virtual GrGLFragmentProcessor* createGLInstance() const SK_OVERRIDE; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 856 | |
| 857 | SkScalar centerX() const { return fInfo.fCenterEnd.fX; } |
| 858 | SkScalar centerY() const { return fInfo.fCenterEnd.fY; } |
| 859 | SkScalar A() const { return fInfo.fA; } |
| 860 | SkScalar B() const { return fInfo.fB; } |
| 861 | SkScalar C() const { return fInfo.fC; } |
| 862 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 863 | private: |
bsalomon | 0e08fc1 | 2014-10-15 08:19:04 -0700 | [diff] [blame] | 864 | virtual bool onIsEqual(const GrFragmentProcessor& sBase) const SK_OVERRIDE { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 865 | const CircleInside2PtConicalEffect& s = sBase.cast<CircleInside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 866 | return (INHERITED::onIsEqual(sBase) && |
| 867 | this->fInfo.fCenterEnd == s.fInfo.fCenterEnd && |
| 868 | this->fInfo.fA == s.fInfo.fA && |
| 869 | this->fInfo.fB == s.fInfo.fB && |
| 870 | this->fInfo.fC == s.fInfo.fC); |
| 871 | } |
| 872 | |
| 873 | CircleInside2PtConicalEffect(GrContext* ctx, |
| 874 | const SkTwoPointConicalGradient& shader, |
| 875 | const SkMatrix& matrix, |
| 876 | SkShader::TileMode tm, |
| 877 | const CircleConicalInfo& info) |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame^] | 878 | : INHERITED(ctx, shader, matrix, tm), fInfo(info) { |
| 879 | this->initClassID<CircleInside2PtConicalEffect>(); |
| 880 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 881 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 882 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 883 | |
| 884 | const CircleConicalInfo fInfo; |
| 885 | |
| 886 | typedef GrGradientEffect INHERITED; |
| 887 | }; |
| 888 | |
| 889 | class GLCircleInside2PtConicalEffect : public GrGLGradientEffect { |
| 890 | public: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame^] | 891 | GLCircleInside2PtConicalEffect(const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 892 | virtual ~GLCircleInside2PtConicalEffect() {} |
| 893 | |
joshualitt | 1598899 | 2014-10-09 15:04:05 -0700 | [diff] [blame] | 894 | virtual void emitCode(GrGLFPBuilder*, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 895 | const GrFragmentProcessor&, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 896 | const char* outputColor, |
| 897 | const char* inputColor, |
| 898 | const TransformedCoordsArray&, |
| 899 | const TextureSamplerArray&) SK_OVERRIDE; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 900 | virtual void setData(const GrGLProgramDataManager&, const GrProcessor&) SK_OVERRIDE; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 901 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 902 | static void GenKey(const GrProcessor&, const GrGLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 903 | |
| 904 | protected: |
| 905 | UniformHandle fCenterUni; |
| 906 | UniformHandle fParamUni; |
| 907 | |
| 908 | const char* fVSVaryingName; |
| 909 | const char* fFSVaryingName; |
| 910 | |
| 911 | // @{ |
| 912 | /// Values last uploaded as uniforms |
| 913 | |
| 914 | SkScalar fCachedCenterX; |
| 915 | SkScalar fCachedCenterY; |
| 916 | SkScalar fCachedA; |
| 917 | SkScalar fCachedB; |
| 918 | SkScalar fCachedC; |
| 919 | |
| 920 | // @} |
| 921 | |
| 922 | private: |
| 923 | typedef GrGLGradientEffect INHERITED; |
| 924 | |
| 925 | }; |
| 926 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame^] | 927 | void CircleInside2PtConicalEffect::getGLProcessorKey(const GrGLCaps& caps, |
| 928 | GrProcessorKeyBuilder* b) const { |
| 929 | GLCircleInside2PtConicalEffect::GenKey(*this, caps, b); |
| 930 | } |
| 931 | |
| 932 | GrGLFragmentProcessor* CircleInside2PtConicalEffect::createGLInstance() const { |
| 933 | return SkNEW_ARGS(GLCircleInside2PtConicalEffect, (*this)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 934 | } |
| 935 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 936 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(CircleInside2PtConicalEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 937 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 938 | /* |
| 939 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 940 | */ |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 941 | GrFragmentProcessor* CircleInside2PtConicalEffect::TestCreate(SkRandom* random, |
| 942 | GrContext* context, |
| 943 | const GrDrawTargetCaps&, |
| 944 | GrTexture**) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 945 | SkPoint center1 = {random->nextUScalar1(), random->nextUScalar1()}; |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 946 | SkScalar radius1 = random->nextUScalar1() + 0.0001f; // make sure radius1 != 0 |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 947 | SkPoint center2; |
| 948 | SkScalar radius2; |
| 949 | do { |
| 950 | center2.set(random->nextUScalar1(), random->nextUScalar1()); |
| 951 | // Below makes sure that circle one is contained within circle two |
| 952 | SkScalar increase = random->nextUScalar1(); |
| 953 | SkPoint diff = center2 - center1; |
| 954 | SkScalar diffLen = diff.length(); |
| 955 | radius2 = radius1 + diffLen + increase; |
| 956 | // If the circles are identical the factory will give us an empty shader. |
| 957 | } while (radius1 == radius2 && center1 == center2); |
| 958 | |
| 959 | SkColor colors[kMaxRandomGradientColors]; |
| 960 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 961 | SkScalar* stops = stopsArray; |
| 962 | SkShader::TileMode tm; |
| 963 | int colorCount = RandomGradientParams(random, colors, &stops, &tm); |
| 964 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 965 | center2, radius2, |
| 966 | colors, stops, colorCount, |
| 967 | tm)); |
| 968 | SkPaint paint; |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 969 | GrColor paintColor; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 970 | GrFragmentProcessor* processor; |
| 971 | SkAssertResult(shader->asFragmentProcessor(context, paint, NULL, &paintColor, &processor)); |
| 972 | return processor; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 973 | } |
| 974 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame^] | 975 | GLCircleInside2PtConicalEffect::GLCircleInside2PtConicalEffect(const GrProcessor& processor) |
| 976 | : fVSVaryingName(NULL) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 977 | , fFSVaryingName(NULL) |
| 978 | , fCachedCenterX(SK_ScalarMax) |
| 979 | , fCachedCenterY(SK_ScalarMax) |
| 980 | , fCachedA(SK_ScalarMax) |
| 981 | , fCachedB(SK_ScalarMax) |
| 982 | , fCachedC(SK_ScalarMax) {} |
| 983 | |
joshualitt | 1598899 | 2014-10-09 15:04:05 -0700 | [diff] [blame] | 984 | void GLCircleInside2PtConicalEffect::emitCode(GrGLFPBuilder* builder, |
joshualitt | 60030bc | 2014-11-25 14:21:55 -0800 | [diff] [blame] | 985 | const GrFragmentProcessor& fp, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 986 | const char* outputColor, |
| 987 | const char* inputColor, |
| 988 | const TransformedCoordsArray& coords, |
| 989 | const TextureSamplerArray& samplers) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame^] | 990 | const CircleInside2PtConicalEffect& ge = fp.cast<CircleInside2PtConicalEffect>(); |
joshualitt | 60030bc | 2014-11-25 14:21:55 -0800 | [diff] [blame] | 991 | this->emitUniforms(builder, ge); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 992 | fCenterUni = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 993 | kVec2f_GrSLType, "Conical2FSCenter"); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 994 | fParamUni = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 995 | kVec3f_GrSLType, "Conical2FSParams"); |
| 996 | SkString tName("t"); |
| 997 | |
| 998 | GrGLShaderVar center = builder->getUniformVariable(fCenterUni); |
| 999 | // params.x = A |
| 1000 | // params.y = B |
| 1001 | // params.z = C |
| 1002 | GrGLShaderVar params = builder->getUniformVariable(fParamUni); |
| 1003 | |
| 1004 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
joshualitt | 1598899 | 2014-10-09 15:04:05 -0700 | [diff] [blame] | 1005 | GrGLFPFragmentBuilder* fsBuilder = builder->getFragmentShaderBuilder(); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1006 | SkString coords2DString = fsBuilder->ensureFSCoords2D(coords, 0); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 1007 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1008 | |
| 1009 | // p = coords2D |
| 1010 | // e = center end |
| 1011 | // r = radius end |
| 1012 | // A = dot(e, e) - r^2 + 2 * r - 1 |
| 1013 | // B = (r -1) / A |
| 1014 | // C = 1 / A |
| 1015 | // d = dot(e, p) + B |
| 1016 | // t = d +/- sqrt(d^2 - A * dot(p, p) + C) |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1017 | fsBuilder->codeAppendf("\tfloat pDotp = dot(%s, %s);\n", coords2D, coords2D); |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 1018 | fsBuilder->codeAppendf("\tfloat d = dot(%s, %s) + %s.y;\n", coords2D, center.c_str(), |
| 1019 | params.c_str()); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1020 | 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] | 1021 | tName.c_str(), params.c_str(), params.c_str()); |
| 1022 | |
joshualitt | 60030bc | 2014-11-25 14:21:55 -0800 | [diff] [blame] | 1023 | this->emitColor(builder, ge, tName.c_str(), outputColor, inputColor, samplers); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1024 | } |
| 1025 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 1026 | void GLCircleInside2PtConicalEffect::setData(const GrGLProgramDataManager& pdman, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1027 | const GrProcessor& processor) { |
| 1028 | INHERITED::setData(pdman, processor); |
| 1029 | const CircleInside2PtConicalEffect& data = processor.cast<CircleInside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1030 | SkScalar centerX = data.centerX(); |
| 1031 | SkScalar centerY = data.centerY(); |
| 1032 | SkScalar A = data.A(); |
| 1033 | SkScalar B = data.B(); |
| 1034 | SkScalar C = data.C(); |
| 1035 | |
| 1036 | if (fCachedCenterX != centerX || fCachedCenterY != centerY || |
| 1037 | fCachedA != A || fCachedB != B || fCachedC != C) { |
| 1038 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 1039 | pdman.set2f(fCenterUni, SkScalarToFloat(centerX), SkScalarToFloat(centerY)); |
| 1040 | pdman.set3f(fParamUni, SkScalarToFloat(A), SkScalarToFloat(B), SkScalarToFloat(C)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1041 | |
| 1042 | fCachedCenterX = centerX; |
| 1043 | fCachedCenterY = centerY; |
| 1044 | fCachedA = A; |
| 1045 | fCachedB = B; |
| 1046 | fCachedC = C; |
| 1047 | } |
| 1048 | } |
| 1049 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1050 | void GLCircleInside2PtConicalEffect::GenKey(const GrProcessor& processor, |
| 1051 | const GrGLCaps&, GrProcessorKeyBuilder* b) { |
| 1052 | b->add32(GenBaseGradientKey(processor)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1053 | } |
| 1054 | |
| 1055 | ////////////////////////////////////////////////////////////////////////////// |
| 1056 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1057 | class CircleOutside2PtConicalEffect : public GrGradientEffect { |
| 1058 | public: |
| 1059 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1060 | static GrFragmentProcessor* Create(GrContext* ctx, |
| 1061 | const SkTwoPointConicalGradient& shader, |
| 1062 | const SkMatrix& matrix, |
| 1063 | SkShader::TileMode tm, |
| 1064 | const CircleConicalInfo& info) { |
bsalomon | 55fad7a | 2014-07-08 07:34:20 -0700 | [diff] [blame] | 1065 | return SkNEW_ARGS(CircleOutside2PtConicalEffect, (ctx, shader, matrix, tm, info)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1066 | } |
| 1067 | |
| 1068 | virtual ~CircleOutside2PtConicalEffect() {} |
| 1069 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame^] | 1070 | virtual const char* name() const SK_OVERRIDE { return "Two-Point Conical Gradient Outside"; } |
| 1071 | |
| 1072 | virtual void getGLProcessorKey(const GrGLCaps&, GrProcessorKeyBuilder*) const SK_OVERRIDE; |
| 1073 | |
| 1074 | virtual GrGLFragmentProcessor* createGLInstance() const SK_OVERRIDE; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1075 | |
| 1076 | SkScalar centerX() const { return fInfo.fCenterEnd.fX; } |
| 1077 | SkScalar centerY() const { return fInfo.fCenterEnd.fY; } |
| 1078 | SkScalar A() const { return fInfo.fA; } |
| 1079 | SkScalar B() const { return fInfo.fB; } |
| 1080 | SkScalar C() const { return fInfo.fC; } |
| 1081 | SkScalar tLimit() const { return fTLimit; } |
| 1082 | bool isFlipped() const { return fIsFlipped; } |
| 1083 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1084 | private: |
bsalomon | 0e08fc1 | 2014-10-15 08:19:04 -0700 | [diff] [blame] | 1085 | virtual bool onIsEqual(const GrFragmentProcessor& sBase) const SK_OVERRIDE { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 1086 | const CircleOutside2PtConicalEffect& s = sBase.cast<CircleOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1087 | return (INHERITED::onIsEqual(sBase) && |
| 1088 | this->fInfo.fCenterEnd == s.fInfo.fCenterEnd && |
| 1089 | this->fInfo.fA == s.fInfo.fA && |
| 1090 | this->fInfo.fB == s.fInfo.fB && |
| 1091 | this->fInfo.fC == s.fInfo.fC && |
| 1092 | this->fTLimit == s.fTLimit && |
| 1093 | this->fIsFlipped == s.fIsFlipped); |
| 1094 | } |
| 1095 | |
| 1096 | CircleOutside2PtConicalEffect(GrContext* ctx, |
| 1097 | const SkTwoPointConicalGradient& shader, |
| 1098 | const SkMatrix& matrix, |
| 1099 | SkShader::TileMode tm, |
| 1100 | const CircleConicalInfo& info) |
| 1101 | : INHERITED(ctx, shader, matrix, tm), fInfo(info) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame^] | 1102 | this->initClassID<CircleOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1103 | if (shader.getStartRadius() != shader.getEndRadius()) { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 1104 | fTLimit = SkScalarDiv(shader.getStartRadius(), |
| 1105 | (shader.getStartRadius() - shader.getEndRadius())); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1106 | } else { |
| 1107 | fTLimit = SK_ScalarMin; |
| 1108 | } |
| 1109 | |
| 1110 | fIsFlipped = shader.isFlippedGrad(); |
| 1111 | } |
| 1112 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1113 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1114 | |
| 1115 | const CircleConicalInfo fInfo; |
| 1116 | SkScalar fTLimit; |
| 1117 | bool fIsFlipped; |
| 1118 | |
| 1119 | typedef GrGradientEffect INHERITED; |
| 1120 | }; |
| 1121 | |
| 1122 | class GLCircleOutside2PtConicalEffect : public GrGLGradientEffect { |
| 1123 | public: |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame^] | 1124 | GLCircleOutside2PtConicalEffect(const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1125 | virtual ~GLCircleOutside2PtConicalEffect() {} |
| 1126 | |
joshualitt | 1598899 | 2014-10-09 15:04:05 -0700 | [diff] [blame] | 1127 | virtual void emitCode(GrGLFPBuilder*, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1128 | const GrFragmentProcessor&, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1129 | const char* outputColor, |
| 1130 | const char* inputColor, |
| 1131 | const TransformedCoordsArray&, |
| 1132 | const TextureSamplerArray&) SK_OVERRIDE; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1133 | virtual void setData(const GrGLProgramDataManager&, const GrProcessor&) SK_OVERRIDE; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1134 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1135 | static void GenKey(const GrProcessor&, const GrGLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1136 | |
| 1137 | protected: |
| 1138 | UniformHandle fCenterUni; |
| 1139 | UniformHandle fParamUni; |
| 1140 | |
| 1141 | const char* fVSVaryingName; |
| 1142 | const char* fFSVaryingName; |
| 1143 | |
| 1144 | bool fIsFlipped; |
| 1145 | |
| 1146 | // @{ |
| 1147 | /// Values last uploaded as uniforms |
| 1148 | |
| 1149 | SkScalar fCachedCenterX; |
| 1150 | SkScalar fCachedCenterY; |
| 1151 | SkScalar fCachedA; |
| 1152 | SkScalar fCachedB; |
| 1153 | SkScalar fCachedC; |
| 1154 | SkScalar fCachedTLimit; |
| 1155 | |
| 1156 | // @} |
| 1157 | |
| 1158 | private: |
| 1159 | typedef GrGLGradientEffect INHERITED; |
| 1160 | |
| 1161 | }; |
| 1162 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame^] | 1163 | void CircleOutside2PtConicalEffect::getGLProcessorKey(const GrGLCaps& caps, |
| 1164 | GrProcessorKeyBuilder* b) const { |
| 1165 | GLCircleOutside2PtConicalEffect::GenKey(*this, caps, b); |
| 1166 | } |
| 1167 | |
| 1168 | GrGLFragmentProcessor* CircleOutside2PtConicalEffect::createGLInstance() const { |
| 1169 | return SkNEW_ARGS(GLCircleOutside2PtConicalEffect, (*this)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1170 | } |
| 1171 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1172 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(CircleOutside2PtConicalEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1173 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 1174 | /* |
| 1175 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 1176 | */ |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1177 | GrFragmentProcessor* CircleOutside2PtConicalEffect::TestCreate(SkRandom* random, |
| 1178 | GrContext* context, |
| 1179 | const GrDrawTargetCaps&, |
| 1180 | GrTexture**) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1181 | SkPoint center1 = {random->nextUScalar1(), random->nextUScalar1()}; |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 1182 | SkScalar radius1 = random->nextUScalar1() + 0.0001f; // make sure radius1 != 0 |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1183 | SkPoint center2; |
| 1184 | SkScalar radius2; |
| 1185 | SkScalar diffLen; |
| 1186 | do { |
| 1187 | center2.set(random->nextUScalar1(), random->nextUScalar1()); |
| 1188 | // If the circles share a center than we can't be in the outside case |
| 1189 | } while (center1 == center2); |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 1190 | SkPoint diff = center2 - center1; |
| 1191 | diffLen = diff.length(); |
| 1192 | // Below makes sure that circle one is not contained within circle two |
| 1193 | // and have radius2 >= radius to match sorting on cpu side |
| 1194 | radius2 = radius1 + random->nextRangeF(0.f, diffLen); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1195 | |
| 1196 | SkColor colors[kMaxRandomGradientColors]; |
| 1197 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 1198 | SkScalar* stops = stopsArray; |
| 1199 | SkShader::TileMode tm; |
| 1200 | int colorCount = RandomGradientParams(random, colors, &stops, &tm); |
| 1201 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 1202 | center2, radius2, |
| 1203 | colors, stops, colorCount, |
| 1204 | tm)); |
| 1205 | SkPaint paint; |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 1206 | GrColor paintColor; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1207 | GrFragmentProcessor* processor; |
| 1208 | SkAssertResult(shader->asFragmentProcessor(context, paint, NULL, &paintColor, &processor)); |
| 1209 | return processor; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1210 | } |
| 1211 | |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame^] | 1212 | GLCircleOutside2PtConicalEffect::GLCircleOutside2PtConicalEffect(const GrProcessor& processor) |
| 1213 | : fVSVaryingName(NULL) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1214 | , fFSVaryingName(NULL) |
| 1215 | , fCachedCenterX(SK_ScalarMax) |
| 1216 | , fCachedCenterY(SK_ScalarMax) |
| 1217 | , fCachedA(SK_ScalarMax) |
| 1218 | , fCachedB(SK_ScalarMax) |
| 1219 | , fCachedC(SK_ScalarMax) |
| 1220 | , fCachedTLimit(SK_ScalarMax) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1221 | const CircleOutside2PtConicalEffect& data = processor.cast<CircleOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1222 | fIsFlipped = data.isFlipped(); |
| 1223 | } |
| 1224 | |
joshualitt | 1598899 | 2014-10-09 15:04:05 -0700 | [diff] [blame] | 1225 | void GLCircleOutside2PtConicalEffect::emitCode(GrGLFPBuilder* builder, |
joshualitt | 60030bc | 2014-11-25 14:21:55 -0800 | [diff] [blame] | 1226 | const GrFragmentProcessor& fp, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1227 | const char* outputColor, |
| 1228 | const char* inputColor, |
| 1229 | const TransformedCoordsArray& coords, |
| 1230 | const TextureSamplerArray& samplers) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame^] | 1231 | const CircleOutside2PtConicalEffect& ge = fp.cast<CircleOutside2PtConicalEffect>(); |
joshualitt | 60030bc | 2014-11-25 14:21:55 -0800 | [diff] [blame] | 1232 | this->emitUniforms(builder, ge); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1233 | fCenterUni = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1234 | kVec2f_GrSLType, "Conical2FSCenter"); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1235 | fParamUni = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1236 | kVec4f_GrSLType, "Conical2FSParams"); |
| 1237 | SkString tName("t"); |
| 1238 | |
| 1239 | GrGLShaderVar center = builder->getUniformVariable(fCenterUni); |
| 1240 | // params.x = A |
| 1241 | // params.y = B |
| 1242 | // params.z = C |
| 1243 | GrGLShaderVar params = builder->getUniformVariable(fParamUni); |
| 1244 | |
| 1245 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
joshualitt | 1598899 | 2014-10-09 15:04:05 -0700 | [diff] [blame] | 1246 | GrGLFPFragmentBuilder* fsBuilder = builder->getFragmentShaderBuilder(); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1247 | SkString coords2DString = fsBuilder->ensureFSCoords2D(coords, 0); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 1248 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1249 | |
| 1250 | // output will default to transparent black (we simply won't write anything |
| 1251 | // else to it if invalid, instead of discarding or returning prematurely) |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1252 | 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] | 1253 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1254 | // p = coords2D |
| 1255 | // e = center end |
| 1256 | // r = radius end |
| 1257 | // A = dot(e, e) - r^2 + 2 * r - 1 |
| 1258 | // B = (r -1) / A |
| 1259 | // C = 1 / A |
| 1260 | // d = dot(e, p) + B |
| 1261 | // t = d +/- sqrt(d^2 - A * dot(p, p) + C) |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1262 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1263 | fsBuilder->codeAppendf("\tfloat pDotp = dot(%s, %s);\n", coords2D, coords2D); |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 1264 | fsBuilder->codeAppendf("\tfloat d = dot(%s, %s) + %s.y;\n", coords2D, center.c_str(), |
| 1265 | params.c_str()); |
| 1266 | fsBuilder->codeAppendf("\tfloat deter = d * d - %s.x * pDotp + %s.z;\n", params.c_str(), |
| 1267 | params.c_str()); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1268 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1269 | // Must check to see if we flipped the circle order (to make sure start radius < end radius) |
| 1270 | // If so we must also flip sign on sqrt |
| 1271 | if (!fIsFlipped) { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1272 | 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] | 1273 | } else { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1274 | 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] | 1275 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1276 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1277 | fsBuilder->codeAppendf("\tif (%s >= %s.w && deter >= 0.0) {\n", tName.c_str(), params.c_str()); |
| 1278 | fsBuilder->codeAppend("\t\t"); |
joshualitt | 60030bc | 2014-11-25 14:21:55 -0800 | [diff] [blame] | 1279 | this->emitColor(builder, ge, tName.c_str(), outputColor, inputColor, samplers); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1280 | fsBuilder->codeAppend("\t}\n"); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1281 | } |
| 1282 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 1283 | void GLCircleOutside2PtConicalEffect::setData(const GrGLProgramDataManager& pdman, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1284 | const GrProcessor& processor) { |
| 1285 | INHERITED::setData(pdman, processor); |
| 1286 | const CircleOutside2PtConicalEffect& data = processor.cast<CircleOutside2PtConicalEffect>(); |
commit-bot@chromium.org | 44d83c1 | 2014-04-21 13:10:25 +0000 | [diff] [blame] | 1287 | SkASSERT(data.isFlipped() == fIsFlipped); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1288 | SkScalar centerX = data.centerX(); |
| 1289 | SkScalar centerY = data.centerY(); |
| 1290 | SkScalar A = data.A(); |
| 1291 | SkScalar B = data.B(); |
| 1292 | SkScalar C = data.C(); |
| 1293 | SkScalar tLimit = data.tLimit(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1294 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1295 | if (fCachedCenterX != centerX || fCachedCenterY != centerY || |
| 1296 | fCachedA != A || fCachedB != B || fCachedC != C || fCachedTLimit != tLimit) { |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1297 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 1298 | pdman.set2f(fCenterUni, SkScalarToFloat(centerX), SkScalarToFloat(centerY)); |
| 1299 | pdman.set4f(fParamUni, SkScalarToFloat(A), SkScalarToFloat(B), SkScalarToFloat(C), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1300 | SkScalarToFloat(tLimit)); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1301 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1302 | fCachedCenterX = centerX; |
| 1303 | fCachedCenterY = centerY; |
| 1304 | fCachedA = A; |
| 1305 | fCachedB = B; |
| 1306 | fCachedC = C; |
| 1307 | fCachedTLimit = tLimit; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1308 | } |
| 1309 | } |
| 1310 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1311 | void GLCircleOutside2PtConicalEffect::GenKey(const GrProcessor& processor, |
| 1312 | const GrGLCaps&, GrProcessorKeyBuilder* b) { |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 1313 | uint32_t* key = b->add32n(2); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1314 | key[0] = GenBaseGradientKey(processor); |
| 1315 | key[1] = processor.cast<CircleOutside2PtConicalEffect>().isFlipped(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1316 | } |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1317 | |
| 1318 | ////////////////////////////////////////////////////////////////////////////// |
| 1319 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1320 | GrFragmentProcessor* Gr2PtConicalGradientEffect::Create(GrContext* ctx, |
| 1321 | const SkTwoPointConicalGradient& shader, |
| 1322 | SkShader::TileMode tm, |
| 1323 | const SkMatrix* localMatrix) { |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1324 | SkMatrix matrix; |
| 1325 | if (!shader.getLocalMatrix().invert(&matrix)) { |
| 1326 | return NULL; |
| 1327 | } |
commit-bot@chromium.org | 96fb748 | 2014-05-09 20:28:11 +0000 | [diff] [blame] | 1328 | if (localMatrix) { |
| 1329 | SkMatrix inv; |
| 1330 | if (!localMatrix->invert(&inv)) { |
| 1331 | return NULL; |
| 1332 | } |
| 1333 | matrix.postConcat(inv); |
| 1334 | } |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1335 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1336 | if (shader.getStartRadius() < kErrorTol) { |
| 1337 | SkScalar focalX; |
| 1338 | ConicalType type = set_matrix_focal_conical(shader, &matrix, &focalX); |
| 1339 | if (type == kInside_ConicalType) { |
| 1340 | return FocalInside2PtConicalEffect::Create(ctx, shader, matrix, tm, focalX); |
| 1341 | } else if(type == kEdge_ConicalType) { |
| 1342 | set_matrix_edge_conical(shader, &matrix); |
| 1343 | return Edge2PtConicalEffect::Create(ctx, shader, matrix, tm); |
| 1344 | } else { |
| 1345 | return FocalOutside2PtConicalEffect::Create(ctx, shader, matrix, tm, focalX); |
| 1346 | } |
| 1347 | } |
| 1348 | |
| 1349 | CircleConicalInfo info; |
| 1350 | ConicalType type = set_matrix_circle_conical(shader, &matrix, &info); |
| 1351 | |
| 1352 | if (type == kInside_ConicalType) { |
| 1353 | return CircleInside2PtConicalEffect::Create(ctx, shader, matrix, tm, info); |
| 1354 | } else if (type == kEdge_ConicalType) { |
| 1355 | set_matrix_edge_conical(shader, &matrix); |
| 1356 | return Edge2PtConicalEffect::Create(ctx, shader, matrix, tm); |
| 1357 | } else { |
| 1358 | return CircleOutside2PtConicalEffect::Create(ctx, shader, matrix, tm, info); |
| 1359 | } |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1360 | } |
| 1361 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1362 | #endif |