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 | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 14 | #include "GrTBackendProcessorFactory.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 GLEdge2PtConicalEffect; |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 59 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 60 | class Edge2PtConicalEffect : public GrGradientEffect { |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 61 | public: |
| 62 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 63 | static GrFragmentProcessor* Create(GrContext* ctx, |
| 64 | const SkTwoPointConicalGradient& shader, |
| 65 | const SkMatrix& matrix, |
| 66 | SkShader::TileMode tm) { |
bsalomon | 55fad7a | 2014-07-08 07:34:20 -0700 | [diff] [blame] | 67 | return SkNEW_ARGS(Edge2PtConicalEffect, (ctx, shader, matrix, tm)); |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 68 | } |
| 69 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 70 | virtual ~Edge2PtConicalEffect() {} |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 71 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 72 | static const char* Name() { return "Two-Point Conical Gradient Edge Touching"; } |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 73 | virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERRIDE; |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 74 | |
| 75 | // The radial gradient parameters can collapse to a linear (instead of quadratic) equation. |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 76 | SkScalar center() const { return fCenterX1; } |
| 77 | SkScalar diffRadius() const { return fDiffRadius; } |
| 78 | SkScalar radius() const { return fRadius0; } |
| 79 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 80 | typedef GLEdge2PtConicalEffect GLProcessor; |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 81 | |
| 82 | private: |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 83 | virtual bool onIsEqual(const GrProcessor& 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()){ |
| 99 | // 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] | 100 | // 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] | 101 | // start radius was close to zero, otherwise we scaled by the start radius. In addition |
| 102 | // Our test for the edge case in set_matrix_circle_conical has a higher tolerance so we |
| 103 | // need the sqrt value below |
| 104 | SkASSERT(SkScalarAbs(SkScalarAbs(fDiffRadius) - fCenterX1) < |
| 105 | (fRadius0 < kErrorTol ? shader.getEndRadius() * kEdgeErrorTol : |
| 106 | fRadius0 * sqrt(kEdgeErrorTol))); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 107 | |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 108 | // We pass the linear part of the quadratic as a varying. |
| 109 | // float b = -2.0 * (fCenterX1 * x + fRadius0 * fDiffRadius * z) |
| 110 | fBTransform = this->getCoordTransform(); |
| 111 | SkMatrix& bMatrix = *fBTransform.accessMatrix(); |
| 112 | SkScalar r0dr = SkScalarMul(fRadius0, fDiffRadius); |
| 113 | bMatrix[SkMatrix::kMScaleX] = -2 * (SkScalarMul(fCenterX1, bMatrix[SkMatrix::kMScaleX]) + |
| 114 | SkScalarMul(r0dr, bMatrix[SkMatrix::kMPersp0])); |
| 115 | bMatrix[SkMatrix::kMSkewX] = -2 * (SkScalarMul(fCenterX1, bMatrix[SkMatrix::kMSkewX]) + |
| 116 | SkScalarMul(r0dr, bMatrix[SkMatrix::kMPersp1])); |
| 117 | bMatrix[SkMatrix::kMTransX] = -2 * (SkScalarMul(fCenterX1, bMatrix[SkMatrix::kMTransX]) + |
| 118 | SkScalarMul(r0dr, bMatrix[SkMatrix::kMPersp2])); |
| 119 | this->addCoordTransform(&fBTransform); |
| 120 | } |
| 121 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 122 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 123 | |
| 124 | // @{ |
| 125 | // Cache of values - these can change arbitrarily, EXCEPT |
| 126 | // we shouldn't change between degenerate and non-degenerate?! |
| 127 | |
| 128 | GrCoordTransform fBTransform; |
| 129 | SkScalar fCenterX1; |
| 130 | SkScalar fRadius0; |
| 131 | SkScalar fDiffRadius; |
| 132 | |
| 133 | // @} |
| 134 | |
| 135 | typedef GrGradientEffect INHERITED; |
| 136 | }; |
| 137 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 138 | class GLEdge2PtConicalEffect : public GrGLGradientEffect { |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 139 | public: |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 140 | GLEdge2PtConicalEffect(const GrBackendProcessorFactory& factory, const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 141 | virtual ~GLEdge2PtConicalEffect() { } |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 142 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 143 | virtual void emitCode(GrGLProgramBuilder*, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 144 | const GrFragmentProcessor&, |
| 145 | const GrProcessorKey&, |
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 | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 173 | const GrBackendFragmentProcessorFactory& Edge2PtConicalEffect::getFactory() const { |
| 174 | return GrTBackendFragmentProcessorFactory<Edge2PtConicalEffect>::getInstance(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 175 | } |
skia.committer@gmail.com | 221b911 | 2014-04-04 03:04:32 +0000 | [diff] [blame] | 176 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 177 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(Edge2PtConicalEffect); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 178 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 179 | /* |
| 180 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 181 | */ |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 182 | GrFragmentProcessor* Edge2PtConicalEffect::TestCreate(SkRandom* random, |
| 183 | GrContext* context, |
| 184 | const GrDrawTargetCaps&, |
| 185 | GrTexture**) { |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 186 | SkPoint center1 = {random->nextUScalar1(), random->nextUScalar1()}; |
| 187 | SkScalar radius1 = random->nextUScalar1(); |
| 188 | SkPoint center2; |
| 189 | SkScalar radius2; |
| 190 | do { |
| 191 | center2.set(random->nextUScalar1(), random->nextUScalar1()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 192 | // If the circles are identical the factory will give us an empty shader. |
| 193 | // This will happen if we pick identical centers |
| 194 | } while (center1 == center2); |
| 195 | |
| 196 | // Below makes sure that circle one is contained within circle two |
| 197 | // and both circles are touching on an edge |
| 198 | SkPoint diff = center2 - center1; |
| 199 | SkScalar diffLen = diff.length(); |
| 200 | radius2 = radius1 + diffLen; |
| 201 | |
| 202 | SkColor colors[kMaxRandomGradientColors]; |
| 203 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 204 | SkScalar* stops = stopsArray; |
| 205 | SkShader::TileMode tm; |
| 206 | int colorCount = RandomGradientParams(random, colors, &stops, &tm); |
| 207 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 208 | center2, radius2, |
| 209 | colors, stops, colorCount, |
| 210 | tm)); |
| 211 | SkPaint paint; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 212 | GrFragmentProcessor* fp; |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 213 | GrColor paintColor; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 214 | SkAssertResult(shader->asFragmentProcessor(context, paint, NULL, &paintColor, &fp)); |
| 215 | return fp; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 216 | } |
| 217 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 218 | GLEdge2PtConicalEffect::GLEdge2PtConicalEffect(const GrBackendProcessorFactory& factory, |
| 219 | const GrProcessor&) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 220 | : INHERITED(factory) |
| 221 | , fVSVaryingName(NULL) |
| 222 | , fFSVaryingName(NULL) |
| 223 | , fCachedRadius(-SK_ScalarMax) |
| 224 | , fCachedDiffRadius(-SK_ScalarMax) {} |
| 225 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 226 | void GLEdge2PtConicalEffect::emitCode(GrGLProgramBuilder* builder, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 227 | const GrFragmentProcessor&, |
| 228 | const GrProcessorKey& key, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 229 | const char* outputColor, |
| 230 | const char* inputColor, |
| 231 | const TransformedCoordsArray& coords, |
| 232 | const TextureSamplerArray& samplers) { |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 233 | uint32_t baseKey = key.get32(0); |
| 234 | this->emitUniforms(builder, baseKey); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 235 | fParamUni = builder->addUniformArray(GrGLProgramBuilder::kFragment_Visibility, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 236 | kFloat_GrSLType, "Conical2FSParams", 3); |
| 237 | |
| 238 | SkString cName("c"); |
| 239 | SkString tName("t"); |
| 240 | SkString p0; // start radius |
| 241 | SkString p1; // start radius squared |
| 242 | SkString p2; // difference in radii (r1 - r0) |
| 243 | |
| 244 | builder->getUniformVariable(fParamUni).appendArrayAccess(0, &p0); |
| 245 | builder->getUniformVariable(fParamUni).appendArrayAccess(1, &p1); |
| 246 | builder->getUniformVariable(fParamUni).appendArrayAccess(2, &p2); |
| 247 | |
| 248 | // We interpolate the linear component in coords[1]. |
joshualitt | 23e280d | 2014-09-18 12:26:38 -0700 | [diff] [blame] | 249 | SkASSERT(coords[0].getType() == coords[1].getType()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 250 | const char* coords2D; |
| 251 | SkString bVar; |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 252 | GrGLFragmentShaderBuilder* fsBuilder = builder->getFragmentShaderBuilder(); |
joshualitt | 23e280d | 2014-09-18 12:26:38 -0700 | [diff] [blame] | 253 | if (kVec3f_GrSLType == coords[0].getType()) { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 254 | 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] | 255 | coords[0].c_str(), coords[0].c_str(), coords[1].c_str(), |
| 256 | coords[1].c_str()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 257 | coords2D = "interpolants.xy"; |
| 258 | bVar = "interpolants.z"; |
| 259 | } else { |
| 260 | coords2D = coords[0].c_str(); |
| 261 | bVar.printf("%s.x", coords[1].c_str()); |
| 262 | } |
| 263 | |
| 264 | // output will default to transparent black (we simply won't write anything |
| 265 | // else to it if invalid, instead of discarding or returning prematurely) |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 266 | 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] | 267 | |
| 268 | // c = (x^2)+(y^2) - params[1] |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 269 | fsBuilder->codeAppendf("\tfloat %s = dot(%s, %s) - %s;\n", |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 270 | cName.c_str(), coords2D, coords2D, p1.c_str()); |
| 271 | |
| 272 | // linear case: t = -c/b |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 273 | fsBuilder->codeAppendf("\tfloat %s = -(%s / %s);\n", tName.c_str(), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 274 | cName.c_str(), bVar.c_str()); |
| 275 | |
| 276 | // if r(t) > 0, then t will be the x coordinate |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 277 | 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] | 278 | p2.c_str(), p0.c_str()); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 279 | fsBuilder->codeAppend("\t"); |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 280 | this->emitColor(builder, tName.c_str(), baseKey, outputColor, inputColor, samplers); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 281 | fsBuilder->codeAppend("\t}\n"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 282 | } |
| 283 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 284 | void GLEdge2PtConicalEffect::setData(const GrGLProgramDataManager& pdman, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 285 | const GrProcessor& processor) { |
| 286 | INHERITED::setData(pdman, processor); |
| 287 | const Edge2PtConicalEffect& data = processor.cast<Edge2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 288 | SkScalar radius0 = data.radius(); |
| 289 | SkScalar diffRadius = data.diffRadius(); |
| 290 | |
| 291 | if (fCachedRadius != radius0 || |
| 292 | fCachedDiffRadius != diffRadius) { |
| 293 | |
| 294 | float values[3] = { |
| 295 | SkScalarToFloat(radius0), |
| 296 | SkScalarToFloat(SkScalarMul(radius0, radius0)), |
| 297 | SkScalarToFloat(diffRadius) |
| 298 | }; |
| 299 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 300 | pdman.set1fv(fParamUni, 3, values); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 301 | fCachedRadius = radius0; |
| 302 | fCachedDiffRadius = diffRadius; |
| 303 | } |
| 304 | } |
| 305 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 306 | void GLEdge2PtConicalEffect::GenKey(const GrProcessor& processor, |
| 307 | const GrGLCaps&, GrProcessorKeyBuilder* b) { |
| 308 | b->add32(GenBaseGradientKey(processor)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 309 | } |
| 310 | |
| 311 | ////////////////////////////////////////////////////////////////////////////// |
| 312 | // Focal Conical Gradients |
| 313 | ////////////////////////////////////////////////////////////////////////////// |
| 314 | |
| 315 | static ConicalType set_matrix_focal_conical(const SkTwoPointConicalGradient& shader, |
| 316 | SkMatrix* invLMatrix, SkScalar* focalX) { |
| 317 | // Inverse of the current local matrix is passed in then, |
| 318 | // translate, scale, and rotate such that endCircle is unit circle on x-axis, |
| 319 | // and focal point is at the origin. |
| 320 | ConicalType conicalType; |
| 321 | const SkPoint& focal = shader.getStartCenter(); |
| 322 | const SkPoint& centerEnd = shader.getEndCenter(); |
| 323 | SkScalar radius = shader.getEndRadius(); |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 324 | SkScalar invRadius = 1.f / radius; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 325 | |
| 326 | SkMatrix matrix; |
| 327 | |
| 328 | matrix.setTranslate(-centerEnd.fX, -centerEnd.fY); |
| 329 | matrix.postScale(invRadius, invRadius); |
| 330 | |
| 331 | SkPoint focalTrans; |
| 332 | matrix.mapPoints(&focalTrans, &focal, 1); |
| 333 | *focalX = focalTrans.length(); |
| 334 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 335 | if (0.f != *focalX) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 336 | SkScalar invFocalX = SkScalarInvert(*focalX); |
| 337 | SkMatrix rot; |
| 338 | rot.setSinCos(-SkScalarMul(invFocalX, focalTrans.fY), |
| 339 | SkScalarMul(invFocalX, focalTrans.fX)); |
| 340 | matrix.postConcat(rot); |
| 341 | } |
| 342 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 343 | matrix.postTranslate(-(*focalX), 0.f); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 344 | |
| 345 | // If the focal point is touching the edge of the circle it will |
| 346 | // cause a degenerate case that must be handled separately |
egdaniel | 8405ef9 | 2014-06-09 11:57:28 -0700 | [diff] [blame] | 347 | // kEdgeErrorTol = 5 * kErrorTol was picked after manual testing the |
| 348 | // stability trade off versus the linear approx used in the Edge Shader |
| 349 | if (SkScalarAbs(1.f - (*focalX)) < kEdgeErrorTol) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 350 | return kEdge_ConicalType; |
| 351 | } |
| 352 | |
| 353 | // Scale factor 1 / (1 - focalX * focalX) |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 354 | SkScalar oneMinusF2 = 1.f - SkScalarMul(*focalX, *focalX); |
| 355 | SkScalar s = SkScalarDiv(1.f, oneMinusF2); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 356 | |
| 357 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 358 | if (s >= 0.f) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 359 | conicalType = kInside_ConicalType; |
| 360 | matrix.postScale(s, s * SkScalarSqrt(oneMinusF2)); |
| 361 | } else { |
| 362 | conicalType = kOutside_ConicalType; |
| 363 | matrix.postScale(s, s); |
| 364 | } |
| 365 | |
| 366 | invLMatrix->postConcat(matrix); |
| 367 | |
| 368 | return conicalType; |
| 369 | } |
| 370 | |
| 371 | ////////////////////////////////////////////////////////////////////////////// |
| 372 | |
| 373 | class GLFocalOutside2PtConicalEffect; |
| 374 | |
| 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 | |
| 388 | static const char* Name() { return "Two-Point Conical Gradient Focal Outside"; } |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 389 | virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERRIDE; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 390 | |
| 391 | bool isFlipped() const { return fIsFlipped; } |
| 392 | SkScalar focal() const { return fFocalX; } |
| 393 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 394 | typedef GLFocalOutside2PtConicalEffect GLProcessor; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 395 | |
| 396 | private: |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 397 | virtual bool onIsEqual(const GrProcessor& sBase) const SK_OVERRIDE { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 398 | const FocalOutside2PtConicalEffect& s = sBase.cast<FocalOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 399 | return (INHERITED::onIsEqual(sBase) && |
| 400 | this->fFocalX == s.fFocalX && |
| 401 | this->fIsFlipped == s.fIsFlipped); |
| 402 | } |
| 403 | |
| 404 | FocalOutside2PtConicalEffect(GrContext* ctx, |
| 405 | const SkTwoPointConicalGradient& shader, |
| 406 | const SkMatrix& matrix, |
| 407 | SkShader::TileMode tm, |
| 408 | SkScalar focalX) |
| 409 | : INHERITED(ctx, shader, matrix, tm), fFocalX(focalX), fIsFlipped(shader.isFlippedGrad()) {} |
| 410 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 411 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 412 | |
| 413 | SkScalar fFocalX; |
| 414 | bool fIsFlipped; |
| 415 | |
| 416 | typedef GrGradientEffect INHERITED; |
| 417 | }; |
| 418 | |
| 419 | class GLFocalOutside2PtConicalEffect : public GrGLGradientEffect { |
| 420 | public: |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 421 | GLFocalOutside2PtConicalEffect(const GrBackendProcessorFactory& factory, const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 422 | virtual ~GLFocalOutside2PtConicalEffect() { } |
| 423 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 424 | virtual void emitCode(GrGLProgramBuilder*, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 425 | const GrFragmentProcessor&, |
| 426 | const GrProcessorKey&, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 427 | const char* outputColor, |
| 428 | const char* inputColor, |
| 429 | const TransformedCoordsArray&, |
| 430 | const TextureSamplerArray&) SK_OVERRIDE; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 431 | virtual void setData(const GrGLProgramDataManager&, const GrProcessor&) SK_OVERRIDE; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 432 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 433 | static void GenKey(const GrProcessor&, const GrGLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 434 | |
| 435 | protected: |
| 436 | UniformHandle fParamUni; |
| 437 | |
| 438 | const char* fVSVaryingName; |
| 439 | const char* fFSVaryingName; |
| 440 | |
| 441 | bool fIsFlipped; |
| 442 | |
| 443 | // @{ |
| 444 | /// Values last uploaded as uniforms |
| 445 | |
| 446 | SkScalar fCachedFocal; |
| 447 | |
| 448 | // @} |
| 449 | |
| 450 | private: |
| 451 | typedef GrGLGradientEffect INHERITED; |
| 452 | |
| 453 | }; |
| 454 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 455 | const GrBackendFragmentProcessorFactory& FocalOutside2PtConicalEffect::getFactory() const { |
| 456 | return GrTBackendFragmentProcessorFactory<FocalOutside2PtConicalEffect>::getInstance(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 457 | } |
| 458 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 459 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(FocalOutside2PtConicalEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 460 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 461 | /* |
| 462 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 463 | */ |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 464 | GrFragmentProcessor* FocalOutside2PtConicalEffect::TestCreate(SkRandom* random, |
| 465 | GrContext* context, |
| 466 | const GrDrawTargetCaps&, |
| 467 | GrTexture**) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 468 | SkPoint center1 = {random->nextUScalar1(), random->nextUScalar1()}; |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 469 | SkScalar radius1 = 0.f; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 470 | SkPoint center2; |
| 471 | SkScalar radius2; |
| 472 | do { |
| 473 | center2.set(random->nextUScalar1(), random->nextUScalar1()); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 474 | // 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] | 475 | } while (center1 == center2); |
| 476 | SkPoint diff = center2 - center1; |
| 477 | SkScalar diffLen = diff.length(); |
| 478 | // 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] | 479 | radius2 = random->nextRangeF(0.f, diffLen); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 480 | |
| 481 | SkColor colors[kMaxRandomGradientColors]; |
| 482 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 483 | SkScalar* stops = stopsArray; |
| 484 | SkShader::TileMode tm; |
| 485 | int colorCount = RandomGradientParams(random, colors, &stops, &tm); |
| 486 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 487 | center2, radius2, |
| 488 | colors, stops, colorCount, |
| 489 | tm)); |
| 490 | SkPaint paint; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 491 | GrFragmentProcessor* effect; |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 492 | GrColor paintColor; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 493 | SkAssertResult(shader->asFragmentProcessor(context, paint, NULL, &paintColor, &effect)); |
dandov | 9de5b51 | 2014-06-10 14:38:28 -0700 | [diff] [blame] | 494 | return effect; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 495 | } |
| 496 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 497 | GLFocalOutside2PtConicalEffect::GLFocalOutside2PtConicalEffect(const GrBackendProcessorFactory& factory, |
| 498 | const GrProcessor& processor) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 499 | : INHERITED(factory) |
| 500 | , fVSVaryingName(NULL) |
| 501 | , fFSVaryingName(NULL) |
| 502 | , fCachedFocal(SK_ScalarMax) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 503 | const FocalOutside2PtConicalEffect& data = processor.cast<FocalOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 504 | fIsFlipped = data.isFlipped(); |
| 505 | } |
| 506 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 507 | void GLFocalOutside2PtConicalEffect::emitCode(GrGLProgramBuilder* builder, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 508 | const GrFragmentProcessor&, |
| 509 | const GrProcessorKey& key, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 510 | const char* outputColor, |
| 511 | const char* inputColor, |
| 512 | const TransformedCoordsArray& coords, |
| 513 | const TextureSamplerArray& samplers) { |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 514 | uint32_t baseKey = key.get32(0); |
| 515 | this->emitUniforms(builder, baseKey); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 516 | fParamUni = builder->addUniformArray(GrGLProgramBuilder::kFragment_Visibility, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 517 | kFloat_GrSLType, "Conical2FSParams", 2); |
| 518 | SkString tName("t"); |
| 519 | SkString p0; // focalX |
| 520 | SkString p1; // 1 - focalX * focalX |
| 521 | |
| 522 | builder->getUniformVariable(fParamUni).appendArrayAccess(0, &p0); |
| 523 | builder->getUniformVariable(fParamUni).appendArrayAccess(1, &p1); |
| 524 | |
| 525 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 526 | GrGLFragmentShaderBuilder* fsBuilder = builder->getFragmentShaderBuilder(); |
| 527 | SkString coords2DString = fsBuilder->ensureFSCoords2D(coords, 0); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 528 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 529 | |
| 530 | // t = p.x * focal.x +/- sqrt(p.x^2 + (1 - focal.x^2) * p.y^2) |
| 531 | |
| 532 | // output will default to transparent black (we simply won't write anything |
| 533 | // else to it if invalid, instead of discarding or returning prematurely) |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 534 | 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] | 535 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 536 | fsBuilder->codeAppendf("\tfloat xs = %s.x * %s.x;\n", coords2D, coords2D); |
| 537 | fsBuilder->codeAppendf("\tfloat ys = %s.y * %s.y;\n", coords2D, coords2D); |
| 538 | 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] | 539 | |
| 540 | // Must check to see if we flipped the circle order (to make sure start radius < end radius) |
| 541 | // If so we must also flip sign on sqrt |
| 542 | if (!fIsFlipped) { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 543 | 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] | 544 | coords2D, p0.c_str()); |
| 545 | } else { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 546 | 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] | 547 | coords2D, p0.c_str()); |
| 548 | } |
| 549 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 550 | fsBuilder->codeAppendf("\tif (%s >= 0.0 && d >= 0.0) {\n", tName.c_str()); |
| 551 | fsBuilder->codeAppend("\t\t"); |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 552 | this->emitColor(builder, tName.c_str(), baseKey, outputColor, inputColor, samplers); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 553 | fsBuilder->codeAppend("\t}\n"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 554 | } |
| 555 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 556 | void GLFocalOutside2PtConicalEffect::setData(const GrGLProgramDataManager& pdman, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 557 | const GrProcessor& processor) { |
| 558 | INHERITED::setData(pdman, processor); |
| 559 | const FocalOutside2PtConicalEffect& data = processor.cast<FocalOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 560 | SkASSERT(data.isFlipped() == fIsFlipped); |
| 561 | SkScalar focal = data.focal(); |
| 562 | |
| 563 | if (fCachedFocal != focal) { |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 564 | SkScalar oneMinus2F = 1.f - SkScalarMul(focal, focal); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 565 | |
| 566 | float values[2] = { |
| 567 | SkScalarToFloat(focal), |
| 568 | SkScalarToFloat(oneMinus2F), |
| 569 | }; |
| 570 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 571 | pdman.set1fv(fParamUni, 2, values); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 572 | fCachedFocal = focal; |
| 573 | } |
| 574 | } |
| 575 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 576 | void GLFocalOutside2PtConicalEffect::GenKey(const GrProcessor& processor, |
| 577 | const GrGLCaps&, GrProcessorKeyBuilder* b) { |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 578 | uint32_t* key = b->add32n(2); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 579 | key[0] = GenBaseGradientKey(processor); |
| 580 | key[1] = processor.cast<FocalOutside2PtConicalEffect>().isFlipped(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 581 | } |
| 582 | |
| 583 | ////////////////////////////////////////////////////////////////////////////// |
| 584 | |
| 585 | class GLFocalInside2PtConicalEffect; |
| 586 | |
| 587 | class FocalInside2PtConicalEffect : public GrGradientEffect { |
| 588 | public: |
| 589 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 590 | static GrFragmentProcessor* Create(GrContext* ctx, |
| 591 | const SkTwoPointConicalGradient& shader, |
| 592 | const SkMatrix& matrix, |
| 593 | SkShader::TileMode tm, |
| 594 | SkScalar focalX) { |
bsalomon | 55fad7a | 2014-07-08 07:34:20 -0700 | [diff] [blame] | 595 | return SkNEW_ARGS(FocalInside2PtConicalEffect, (ctx, shader, matrix, tm, focalX)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 596 | } |
| 597 | |
| 598 | virtual ~FocalInside2PtConicalEffect() {} |
| 599 | |
| 600 | static const char* Name() { return "Two-Point Conical Gradient Focal Inside"; } |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 601 | virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERRIDE; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 602 | |
| 603 | SkScalar focal() const { return fFocalX; } |
| 604 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 605 | typedef GLFocalInside2PtConicalEffect GLProcessor; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 606 | |
| 607 | private: |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 608 | virtual bool onIsEqual(const GrProcessor& sBase) const SK_OVERRIDE { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 609 | const FocalInside2PtConicalEffect& s = sBase.cast<FocalInside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 610 | return (INHERITED::onIsEqual(sBase) && |
| 611 | this->fFocalX == s.fFocalX); |
| 612 | } |
| 613 | |
| 614 | FocalInside2PtConicalEffect(GrContext* ctx, |
| 615 | const SkTwoPointConicalGradient& shader, |
| 616 | const SkMatrix& matrix, |
| 617 | SkShader::TileMode tm, |
| 618 | SkScalar focalX) |
| 619 | : INHERITED(ctx, shader, matrix, tm), fFocalX(focalX) {} |
| 620 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 621 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 622 | |
| 623 | SkScalar fFocalX; |
| 624 | |
| 625 | typedef GrGradientEffect INHERITED; |
| 626 | }; |
| 627 | |
| 628 | class GLFocalInside2PtConicalEffect : public GrGLGradientEffect { |
| 629 | public: |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 630 | GLFocalInside2PtConicalEffect(const GrBackendProcessorFactory& factory, const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 631 | virtual ~GLFocalInside2PtConicalEffect() {} |
| 632 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 633 | virtual void emitCode(GrGLProgramBuilder*, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 634 | const GrFragmentProcessor&, |
| 635 | const GrProcessorKey&, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 636 | const char* outputColor, |
| 637 | const char* inputColor, |
| 638 | const TransformedCoordsArray&, |
| 639 | const TextureSamplerArray&) SK_OVERRIDE; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 640 | virtual void setData(const GrGLProgramDataManager&, const GrProcessor&) SK_OVERRIDE; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 641 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 642 | static void GenKey(const GrProcessor&, const GrGLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 643 | |
| 644 | protected: |
| 645 | UniformHandle fFocalUni; |
| 646 | |
| 647 | const char* fVSVaryingName; |
| 648 | const char* fFSVaryingName; |
| 649 | |
| 650 | // @{ |
| 651 | /// Values last uploaded as uniforms |
| 652 | |
| 653 | SkScalar fCachedFocal; |
| 654 | |
| 655 | // @} |
| 656 | |
| 657 | private: |
| 658 | typedef GrGLGradientEffect INHERITED; |
| 659 | |
| 660 | }; |
| 661 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 662 | const GrBackendFragmentProcessorFactory& FocalInside2PtConicalEffect::getFactory() const { |
| 663 | return GrTBackendFragmentProcessorFactory<FocalInside2PtConicalEffect>::getInstance(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 664 | } |
| 665 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 666 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(FocalInside2PtConicalEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 667 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 668 | /* |
| 669 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 670 | */ |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 671 | GrFragmentProcessor* FocalInside2PtConicalEffect::TestCreate(SkRandom* random, |
| 672 | GrContext* context, |
| 673 | const GrDrawTargetCaps&, |
| 674 | GrTexture**) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 675 | SkPoint center1 = {random->nextUScalar1(), random->nextUScalar1()}; |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 676 | SkScalar radius1 = 0.f; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 677 | SkPoint center2; |
| 678 | SkScalar radius2; |
| 679 | do { |
| 680 | center2.set(random->nextUScalar1(), random->nextUScalar1()); |
| 681 | // Below makes sure radius2 is larger enouch such that the focal point |
| 682 | // is inside the end circle |
| 683 | SkScalar increase = random->nextUScalar1(); |
| 684 | SkPoint diff = center2 - center1; |
| 685 | SkScalar diffLen = diff.length(); |
| 686 | radius2 = diffLen + increase; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 687 | // If the circles are identical the factory will give us an empty shader. |
| 688 | } while (radius1 == radius2 && center1 == center2); |
| 689 | |
| 690 | SkColor colors[kMaxRandomGradientColors]; |
| 691 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 692 | SkScalar* stops = stopsArray; |
| 693 | SkShader::TileMode tm; |
| 694 | int colorCount = RandomGradientParams(random, colors, &stops, &tm); |
| 695 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 696 | center2, radius2, |
| 697 | colors, stops, colorCount, |
| 698 | tm)); |
| 699 | SkPaint paint; |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 700 | GrColor paintColor; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 701 | GrFragmentProcessor* fp; |
| 702 | SkAssertResult(shader->asFragmentProcessor(context, paint, NULL, &paintColor, &fp)); |
| 703 | return fp; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 704 | } |
| 705 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 706 | GLFocalInside2PtConicalEffect::GLFocalInside2PtConicalEffect(const GrBackendProcessorFactory& factory, |
| 707 | const GrProcessor&) |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 708 | : INHERITED(factory) |
| 709 | , fVSVaryingName(NULL) |
| 710 | , fFSVaryingName(NULL) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 711 | , fCachedFocal(SK_ScalarMax) {} |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 712 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 713 | void GLFocalInside2PtConicalEffect::emitCode(GrGLProgramBuilder* builder, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 714 | const GrFragmentProcessor&, |
| 715 | const GrProcessorKey& key, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 716 | const char* outputColor, |
| 717 | const char* inputColor, |
| 718 | const TransformedCoordsArray& coords, |
| 719 | const TextureSamplerArray& samplers) { |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 720 | uint32_t baseKey = key.get32(0); |
| 721 | this->emitUniforms(builder, baseKey); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 722 | fFocalUni = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 723 | kFloat_GrSLType, "Conical2FSParams"); |
| 724 | SkString tName("t"); |
| 725 | |
| 726 | // this is the distance along x-axis from the end center to focal point in |
| 727 | // transformed coordinates |
| 728 | GrGLShaderVar focal = builder->getUniformVariable(fFocalUni); |
| 729 | |
| 730 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 731 | GrGLFragmentShaderBuilder* fsBuilder = builder->getFragmentShaderBuilder(); |
| 732 | SkString coords2DString = fsBuilder->ensureFSCoords2D(coords, 0); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 733 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 734 | |
| 735 | // t = p.x * focalX + length(p) |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 736 | 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] | 737 | coords2D, focal.c_str(), coords2D); |
| 738 | |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 739 | this->emitColor(builder, tName.c_str(), baseKey, outputColor, inputColor, samplers); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 740 | } |
| 741 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 742 | void GLFocalInside2PtConicalEffect::setData(const GrGLProgramDataManager& pdman, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 743 | const GrProcessor& processor) { |
| 744 | INHERITED::setData(pdman, processor); |
| 745 | const FocalInside2PtConicalEffect& data = processor.cast<FocalInside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 746 | SkScalar focal = data.focal(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 747 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 748 | if (fCachedFocal != focal) { |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 749 | pdman.set1f(fFocalUni, SkScalarToFloat(focal)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 750 | fCachedFocal = focal; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 751 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 752 | } |
| 753 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 754 | void GLFocalInside2PtConicalEffect::GenKey(const GrProcessor& processor, |
| 755 | const GrGLCaps&, GrProcessorKeyBuilder* b) { |
| 756 | b->add32(GenBaseGradientKey(processor)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 757 | } |
| 758 | |
| 759 | ////////////////////////////////////////////////////////////////////////////// |
| 760 | // Circle Conical Gradients |
| 761 | ////////////////////////////////////////////////////////////////////////////// |
| 762 | |
| 763 | struct CircleConicalInfo { |
| 764 | SkPoint fCenterEnd; |
| 765 | SkScalar fA; |
| 766 | SkScalar fB; |
| 767 | SkScalar fC; |
| 768 | }; |
| 769 | |
| 770 | // Returns focal distance along x-axis in transformed coords |
| 771 | static ConicalType set_matrix_circle_conical(const SkTwoPointConicalGradient& shader, |
| 772 | SkMatrix* invLMatrix, CircleConicalInfo* info) { |
| 773 | // Inverse of the current local matrix is passed in then, |
| 774 | // translate and scale such that start circle is on the origin and has radius 1 |
| 775 | const SkPoint& centerStart = shader.getStartCenter(); |
| 776 | const SkPoint& centerEnd = shader.getEndCenter(); |
| 777 | SkScalar radiusStart = shader.getStartRadius(); |
| 778 | SkScalar radiusEnd = shader.getEndRadius(); |
| 779 | |
| 780 | SkMatrix matrix; |
| 781 | |
| 782 | matrix.setTranslate(-centerStart.fX, -centerStart.fY); |
| 783 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 784 | SkScalar invStartRad = 1.f / radiusStart; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 785 | matrix.postScale(invStartRad, invStartRad); |
| 786 | |
| 787 | radiusEnd /= radiusStart; |
| 788 | |
| 789 | SkPoint centerEndTrans; |
| 790 | matrix.mapPoints(¢erEndTrans, ¢erEnd, 1); |
| 791 | |
| 792 | SkScalar A = centerEndTrans.fX * centerEndTrans.fX + centerEndTrans.fY * centerEndTrans.fY |
| 793 | - radiusEnd * radiusEnd + 2 * radiusEnd - 1; |
| 794 | |
| 795 | // Check to see if start circle is inside end circle with edges touching. |
| 796 | // 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] | 797 | // to the edge shader. kEdgeErrorTol = 5 * kErrorTol was picked after manual testing |
| 798 | // so that C = 1 / A is stable, and the linear approximation used in the Edge shader is |
| 799 | // still accurate. |
| 800 | if (SkScalarAbs(A) < kEdgeErrorTol) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 801 | return kEdge_ConicalType; |
| 802 | } |
| 803 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 804 | SkScalar C = 1.f / A; |
| 805 | SkScalar B = (radiusEnd - 1.f) * C; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 806 | |
| 807 | matrix.postScale(C, C); |
| 808 | |
| 809 | invLMatrix->postConcat(matrix); |
| 810 | |
| 811 | info->fCenterEnd = centerEndTrans; |
| 812 | info->fA = A; |
| 813 | info->fB = B; |
| 814 | info->fC = C; |
| 815 | |
| 816 | // 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] | 817 | if (A < 0.f) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 818 | return kInside_ConicalType; |
| 819 | } |
| 820 | return kOutside_ConicalType; |
| 821 | } |
| 822 | |
| 823 | class GLCircleInside2PtConicalEffect; |
| 824 | |
| 825 | class CircleInside2PtConicalEffect : public GrGradientEffect { |
| 826 | public: |
| 827 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 828 | static GrFragmentProcessor* Create(GrContext* ctx, |
| 829 | const SkTwoPointConicalGradient& shader, |
| 830 | const SkMatrix& matrix, |
| 831 | SkShader::TileMode tm, |
| 832 | const CircleConicalInfo& info) { |
bsalomon | 55fad7a | 2014-07-08 07:34:20 -0700 | [diff] [blame] | 833 | return SkNEW_ARGS(CircleInside2PtConicalEffect, (ctx, shader, matrix, tm, info)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 834 | } |
| 835 | |
| 836 | virtual ~CircleInside2PtConicalEffect() {} |
| 837 | |
| 838 | static const char* Name() { return "Two-Point Conical Gradient Inside"; } |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 839 | virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERRIDE; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 840 | |
| 841 | SkScalar centerX() const { return fInfo.fCenterEnd.fX; } |
| 842 | SkScalar centerY() const { return fInfo.fCenterEnd.fY; } |
| 843 | SkScalar A() const { return fInfo.fA; } |
| 844 | SkScalar B() const { return fInfo.fB; } |
| 845 | SkScalar C() const { return fInfo.fC; } |
| 846 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 847 | typedef GLCircleInside2PtConicalEffect GLProcessor; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 848 | |
| 849 | private: |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 850 | virtual bool onIsEqual(const GrProcessor& sBase) const SK_OVERRIDE { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 851 | const CircleInside2PtConicalEffect& s = sBase.cast<CircleInside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 852 | return (INHERITED::onIsEqual(sBase) && |
| 853 | this->fInfo.fCenterEnd == s.fInfo.fCenterEnd && |
| 854 | this->fInfo.fA == s.fInfo.fA && |
| 855 | this->fInfo.fB == s.fInfo.fB && |
| 856 | this->fInfo.fC == s.fInfo.fC); |
| 857 | } |
| 858 | |
| 859 | CircleInside2PtConicalEffect(GrContext* ctx, |
| 860 | const SkTwoPointConicalGradient& shader, |
| 861 | const SkMatrix& matrix, |
| 862 | SkShader::TileMode tm, |
| 863 | const CircleConicalInfo& info) |
| 864 | : INHERITED(ctx, shader, matrix, tm), fInfo(info) {} |
| 865 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 866 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 867 | |
| 868 | const CircleConicalInfo fInfo; |
| 869 | |
| 870 | typedef GrGradientEffect INHERITED; |
| 871 | }; |
| 872 | |
| 873 | class GLCircleInside2PtConicalEffect : public GrGLGradientEffect { |
| 874 | public: |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 875 | GLCircleInside2PtConicalEffect(const GrBackendProcessorFactory& factory, const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 876 | virtual ~GLCircleInside2PtConicalEffect() {} |
| 877 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 878 | virtual void emitCode(GrGLProgramBuilder*, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 879 | const GrFragmentProcessor&, |
| 880 | const GrProcessorKey&, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 881 | const char* outputColor, |
| 882 | const char* inputColor, |
| 883 | const TransformedCoordsArray&, |
| 884 | const TextureSamplerArray&) SK_OVERRIDE; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 885 | virtual void setData(const GrGLProgramDataManager&, const GrProcessor&) SK_OVERRIDE; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 886 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 887 | static void GenKey(const GrProcessor&, const GrGLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 888 | |
| 889 | protected: |
| 890 | UniformHandle fCenterUni; |
| 891 | UniformHandle fParamUni; |
| 892 | |
| 893 | const char* fVSVaryingName; |
| 894 | const char* fFSVaryingName; |
| 895 | |
| 896 | // @{ |
| 897 | /// Values last uploaded as uniforms |
| 898 | |
| 899 | SkScalar fCachedCenterX; |
| 900 | SkScalar fCachedCenterY; |
| 901 | SkScalar fCachedA; |
| 902 | SkScalar fCachedB; |
| 903 | SkScalar fCachedC; |
| 904 | |
| 905 | // @} |
| 906 | |
| 907 | private: |
| 908 | typedef GrGLGradientEffect INHERITED; |
| 909 | |
| 910 | }; |
| 911 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 912 | const GrBackendFragmentProcessorFactory& CircleInside2PtConicalEffect::getFactory() const { |
| 913 | return GrTBackendFragmentProcessorFactory<CircleInside2PtConicalEffect>::getInstance(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 914 | } |
| 915 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 916 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(CircleInside2PtConicalEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 917 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 918 | /* |
| 919 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 920 | */ |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 921 | GrFragmentProcessor* CircleInside2PtConicalEffect::TestCreate(SkRandom* random, |
| 922 | GrContext* context, |
| 923 | const GrDrawTargetCaps&, |
| 924 | GrTexture**) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 925 | SkPoint center1 = {random->nextUScalar1(), random->nextUScalar1()}; |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 926 | SkScalar radius1 = random->nextUScalar1() + 0.0001f; // make sure radius1 != 0 |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 927 | SkPoint center2; |
| 928 | SkScalar radius2; |
| 929 | do { |
| 930 | center2.set(random->nextUScalar1(), random->nextUScalar1()); |
| 931 | // Below makes sure that circle one is contained within circle two |
| 932 | SkScalar increase = random->nextUScalar1(); |
| 933 | SkPoint diff = center2 - center1; |
| 934 | SkScalar diffLen = diff.length(); |
| 935 | radius2 = radius1 + diffLen + increase; |
| 936 | // If the circles are identical the factory will give us an empty shader. |
| 937 | } while (radius1 == radius2 && center1 == center2); |
| 938 | |
| 939 | SkColor colors[kMaxRandomGradientColors]; |
| 940 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 941 | SkScalar* stops = stopsArray; |
| 942 | SkShader::TileMode tm; |
| 943 | int colorCount = RandomGradientParams(random, colors, &stops, &tm); |
| 944 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 945 | center2, radius2, |
| 946 | colors, stops, colorCount, |
| 947 | tm)); |
| 948 | SkPaint paint; |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 949 | GrColor paintColor; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 950 | GrFragmentProcessor* processor; |
| 951 | SkAssertResult(shader->asFragmentProcessor(context, paint, NULL, &paintColor, &processor)); |
| 952 | return processor; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 953 | } |
| 954 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 955 | GLCircleInside2PtConicalEffect::GLCircleInside2PtConicalEffect(const GrBackendProcessorFactory& factory, |
| 956 | const GrProcessor& processor) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 957 | : INHERITED(factory) |
| 958 | , fVSVaryingName(NULL) |
| 959 | , fFSVaryingName(NULL) |
| 960 | , fCachedCenterX(SK_ScalarMax) |
| 961 | , fCachedCenterY(SK_ScalarMax) |
| 962 | , fCachedA(SK_ScalarMax) |
| 963 | , fCachedB(SK_ScalarMax) |
| 964 | , fCachedC(SK_ScalarMax) {} |
| 965 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 966 | void GLCircleInside2PtConicalEffect::emitCode(GrGLProgramBuilder* builder, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 967 | const GrFragmentProcessor&, |
| 968 | const GrProcessorKey& key, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 969 | const char* outputColor, |
| 970 | const char* inputColor, |
| 971 | const TransformedCoordsArray& coords, |
| 972 | const TextureSamplerArray& samplers) { |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 973 | uint32_t baseKey = key.get32(0); |
| 974 | this->emitUniforms(builder, baseKey); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 975 | fCenterUni = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 976 | kVec2f_GrSLType, "Conical2FSCenter"); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 977 | fParamUni = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 978 | kVec3f_GrSLType, "Conical2FSParams"); |
| 979 | SkString tName("t"); |
| 980 | |
| 981 | GrGLShaderVar center = builder->getUniformVariable(fCenterUni); |
| 982 | // params.x = A |
| 983 | // params.y = B |
| 984 | // params.z = C |
| 985 | GrGLShaderVar params = builder->getUniformVariable(fParamUni); |
| 986 | |
| 987 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 988 | GrGLFragmentShaderBuilder* fsBuilder = builder->getFragmentShaderBuilder(); |
| 989 | SkString coords2DString = fsBuilder->ensureFSCoords2D(coords, 0); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 990 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 991 | |
| 992 | // p = coords2D |
| 993 | // e = center end |
| 994 | // r = radius end |
| 995 | // A = dot(e, e) - r^2 + 2 * r - 1 |
| 996 | // B = (r -1) / A |
| 997 | // C = 1 / A |
| 998 | // d = dot(e, p) + B |
| 999 | // t = d +/- sqrt(d^2 - A * dot(p, p) + C) |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1000 | fsBuilder->codeAppendf("\tfloat pDotp = dot(%s, %s);\n", coords2D, coords2D); |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 1001 | fsBuilder->codeAppendf("\tfloat d = dot(%s, %s) + %s.y;\n", coords2D, center.c_str(), |
| 1002 | params.c_str()); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1003 | 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] | 1004 | tName.c_str(), params.c_str(), params.c_str()); |
| 1005 | |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 1006 | this->emitColor(builder, tName.c_str(), baseKey, outputColor, inputColor, samplers); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1007 | } |
| 1008 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 1009 | void GLCircleInside2PtConicalEffect::setData(const GrGLProgramDataManager& pdman, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 1010 | const GrProcessor& processor) { |
| 1011 | INHERITED::setData(pdman, processor); |
| 1012 | const CircleInside2PtConicalEffect& data = processor.cast<CircleInside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1013 | SkScalar centerX = data.centerX(); |
| 1014 | SkScalar centerY = data.centerY(); |
| 1015 | SkScalar A = data.A(); |
| 1016 | SkScalar B = data.B(); |
| 1017 | SkScalar C = data.C(); |
| 1018 | |
| 1019 | if (fCachedCenterX != centerX || fCachedCenterY != centerY || |
| 1020 | fCachedA != A || fCachedB != B || fCachedC != C) { |
| 1021 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 1022 | pdman.set2f(fCenterUni, SkScalarToFloat(centerX), SkScalarToFloat(centerY)); |
| 1023 | pdman.set3f(fParamUni, SkScalarToFloat(A), SkScalarToFloat(B), SkScalarToFloat(C)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1024 | |
| 1025 | fCachedCenterX = centerX; |
| 1026 | fCachedCenterY = centerY; |
| 1027 | fCachedA = A; |
| 1028 | fCachedB = B; |
| 1029 | fCachedC = C; |
| 1030 | } |
| 1031 | } |
| 1032 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 1033 | void GLCircleInside2PtConicalEffect::GenKey(const GrProcessor& processor, |
| 1034 | const GrGLCaps&, GrProcessorKeyBuilder* b) { |
| 1035 | b->add32(GenBaseGradientKey(processor)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1036 | } |
| 1037 | |
| 1038 | ////////////////////////////////////////////////////////////////////////////// |
| 1039 | |
| 1040 | class GLCircleOutside2PtConicalEffect; |
| 1041 | |
| 1042 | class CircleOutside2PtConicalEffect : public GrGradientEffect { |
| 1043 | public: |
| 1044 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 1045 | static GrFragmentProcessor* Create(GrContext* ctx, |
| 1046 | const SkTwoPointConicalGradient& shader, |
| 1047 | const SkMatrix& matrix, |
| 1048 | SkShader::TileMode tm, |
| 1049 | const CircleConicalInfo& info) { |
bsalomon | 55fad7a | 2014-07-08 07:34:20 -0700 | [diff] [blame] | 1050 | return SkNEW_ARGS(CircleOutside2PtConicalEffect, (ctx, shader, matrix, tm, info)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1051 | } |
| 1052 | |
| 1053 | virtual ~CircleOutside2PtConicalEffect() {} |
| 1054 | |
| 1055 | static const char* Name() { return "Two-Point Conical Gradient Outside"; } |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 1056 | virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERRIDE; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1057 | |
| 1058 | SkScalar centerX() const { return fInfo.fCenterEnd.fX; } |
| 1059 | SkScalar centerY() const { return fInfo.fCenterEnd.fY; } |
| 1060 | SkScalar A() const { return fInfo.fA; } |
| 1061 | SkScalar B() const { return fInfo.fB; } |
| 1062 | SkScalar C() const { return fInfo.fC; } |
| 1063 | SkScalar tLimit() const { return fTLimit; } |
| 1064 | bool isFlipped() const { return fIsFlipped; } |
| 1065 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 1066 | typedef GLCircleOutside2PtConicalEffect GLProcessor; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1067 | |
| 1068 | private: |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 1069 | virtual bool onIsEqual(const GrProcessor& sBase) const SK_OVERRIDE { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 1070 | const CircleOutside2PtConicalEffect& s = sBase.cast<CircleOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1071 | return (INHERITED::onIsEqual(sBase) && |
| 1072 | this->fInfo.fCenterEnd == s.fInfo.fCenterEnd && |
| 1073 | this->fInfo.fA == s.fInfo.fA && |
| 1074 | this->fInfo.fB == s.fInfo.fB && |
| 1075 | this->fInfo.fC == s.fInfo.fC && |
| 1076 | this->fTLimit == s.fTLimit && |
| 1077 | this->fIsFlipped == s.fIsFlipped); |
| 1078 | } |
| 1079 | |
| 1080 | CircleOutside2PtConicalEffect(GrContext* ctx, |
| 1081 | const SkTwoPointConicalGradient& shader, |
| 1082 | const SkMatrix& matrix, |
| 1083 | SkShader::TileMode tm, |
| 1084 | const CircleConicalInfo& info) |
| 1085 | : INHERITED(ctx, shader, matrix, tm), fInfo(info) { |
| 1086 | if (shader.getStartRadius() != shader.getEndRadius()) { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 1087 | fTLimit = SkScalarDiv(shader.getStartRadius(), |
| 1088 | (shader.getStartRadius() - shader.getEndRadius())); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1089 | } else { |
| 1090 | fTLimit = SK_ScalarMin; |
| 1091 | } |
| 1092 | |
| 1093 | fIsFlipped = shader.isFlippedGrad(); |
| 1094 | } |
| 1095 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 1096 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1097 | |
| 1098 | const CircleConicalInfo fInfo; |
| 1099 | SkScalar fTLimit; |
| 1100 | bool fIsFlipped; |
| 1101 | |
| 1102 | typedef GrGradientEffect INHERITED; |
| 1103 | }; |
| 1104 | |
| 1105 | class GLCircleOutside2PtConicalEffect : public GrGLGradientEffect { |
| 1106 | public: |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 1107 | GLCircleOutside2PtConicalEffect(const GrBackendProcessorFactory&, const GrProcessor&); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1108 | virtual ~GLCircleOutside2PtConicalEffect() {} |
| 1109 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1110 | virtual void emitCode(GrGLProgramBuilder*, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 1111 | const GrFragmentProcessor&, |
| 1112 | const GrProcessorKey&, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1113 | const char* outputColor, |
| 1114 | const char* inputColor, |
| 1115 | const TransformedCoordsArray&, |
| 1116 | const TextureSamplerArray&) SK_OVERRIDE; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 1117 | virtual void setData(const GrGLProgramDataManager&, const GrProcessor&) SK_OVERRIDE; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1118 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 1119 | static void GenKey(const GrProcessor&, const GrGLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1120 | |
| 1121 | protected: |
| 1122 | UniformHandle fCenterUni; |
| 1123 | UniformHandle fParamUni; |
| 1124 | |
| 1125 | const char* fVSVaryingName; |
| 1126 | const char* fFSVaryingName; |
| 1127 | |
| 1128 | bool fIsFlipped; |
| 1129 | |
| 1130 | // @{ |
| 1131 | /// Values last uploaded as uniforms |
| 1132 | |
| 1133 | SkScalar fCachedCenterX; |
| 1134 | SkScalar fCachedCenterY; |
| 1135 | SkScalar fCachedA; |
| 1136 | SkScalar fCachedB; |
| 1137 | SkScalar fCachedC; |
| 1138 | SkScalar fCachedTLimit; |
| 1139 | |
| 1140 | // @} |
| 1141 | |
| 1142 | private: |
| 1143 | typedef GrGLGradientEffect INHERITED; |
| 1144 | |
| 1145 | }; |
| 1146 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 1147 | const GrBackendFragmentProcessorFactory& CircleOutside2PtConicalEffect::getFactory() const { |
| 1148 | return GrTBackendFragmentProcessorFactory<CircleOutside2PtConicalEffect>::getInstance(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1149 | } |
| 1150 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 1151 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(CircleOutside2PtConicalEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1152 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 1153 | /* |
| 1154 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 1155 | */ |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 1156 | GrFragmentProcessor* CircleOutside2PtConicalEffect::TestCreate(SkRandom* random, |
| 1157 | GrContext* context, |
| 1158 | const GrDrawTargetCaps&, |
| 1159 | GrTexture**) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1160 | SkPoint center1 = {random->nextUScalar1(), random->nextUScalar1()}; |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 1161 | SkScalar radius1 = random->nextUScalar1() + 0.0001f; // make sure radius1 != 0 |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1162 | SkPoint center2; |
| 1163 | SkScalar radius2; |
| 1164 | SkScalar diffLen; |
| 1165 | do { |
| 1166 | center2.set(random->nextUScalar1(), random->nextUScalar1()); |
| 1167 | // If the circles share a center than we can't be in the outside case |
| 1168 | } while (center1 == center2); |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 1169 | SkPoint diff = center2 - center1; |
| 1170 | diffLen = diff.length(); |
| 1171 | // Below makes sure that circle one is not contained within circle two |
| 1172 | // and have radius2 >= radius to match sorting on cpu side |
| 1173 | radius2 = radius1 + random->nextRangeF(0.f, diffLen); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1174 | |
| 1175 | SkColor colors[kMaxRandomGradientColors]; |
| 1176 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 1177 | SkScalar* stops = stopsArray; |
| 1178 | SkShader::TileMode tm; |
| 1179 | int colorCount = RandomGradientParams(random, colors, &stops, &tm); |
| 1180 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 1181 | center2, radius2, |
| 1182 | colors, stops, colorCount, |
| 1183 | tm)); |
| 1184 | SkPaint paint; |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 1185 | GrColor paintColor; |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 1186 | GrFragmentProcessor* processor; |
| 1187 | SkAssertResult(shader->asFragmentProcessor(context, paint, NULL, &paintColor, &processor)); |
| 1188 | return processor; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1189 | } |
| 1190 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 1191 | GLCircleOutside2PtConicalEffect::GLCircleOutside2PtConicalEffect(const GrBackendProcessorFactory& factory, |
| 1192 | const GrProcessor& processor) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1193 | : INHERITED(factory) |
| 1194 | , fVSVaryingName(NULL) |
| 1195 | , fFSVaryingName(NULL) |
| 1196 | , fCachedCenterX(SK_ScalarMax) |
| 1197 | , fCachedCenterY(SK_ScalarMax) |
| 1198 | , fCachedA(SK_ScalarMax) |
| 1199 | , fCachedB(SK_ScalarMax) |
| 1200 | , fCachedC(SK_ScalarMax) |
| 1201 | , fCachedTLimit(SK_ScalarMax) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 1202 | const CircleOutside2PtConicalEffect& data = processor.cast<CircleOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1203 | fIsFlipped = data.isFlipped(); |
| 1204 | } |
| 1205 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1206 | void GLCircleOutside2PtConicalEffect::emitCode(GrGLProgramBuilder* builder, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 1207 | const GrFragmentProcessor&, |
| 1208 | const GrProcessorKey& key, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1209 | const char* outputColor, |
| 1210 | const char* inputColor, |
| 1211 | const TransformedCoordsArray& coords, |
| 1212 | const TextureSamplerArray& samplers) { |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 1213 | uint32_t baseKey = key.get32(0); |
| 1214 | this->emitUniforms(builder, baseKey); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1215 | fCenterUni = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1216 | kVec2f_GrSLType, "Conical2FSCenter"); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1217 | fParamUni = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1218 | kVec4f_GrSLType, "Conical2FSParams"); |
| 1219 | SkString tName("t"); |
| 1220 | |
| 1221 | GrGLShaderVar center = builder->getUniformVariable(fCenterUni); |
| 1222 | // params.x = A |
| 1223 | // params.y = B |
| 1224 | // params.z = C |
| 1225 | GrGLShaderVar params = builder->getUniformVariable(fParamUni); |
| 1226 | |
| 1227 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1228 | GrGLFragmentShaderBuilder* fsBuilder = builder->getFragmentShaderBuilder(); |
| 1229 | SkString coords2DString = fsBuilder->ensureFSCoords2D(coords, 0); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 1230 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1231 | |
| 1232 | // output will default to transparent black (we simply won't write anything |
| 1233 | // else to it if invalid, instead of discarding or returning prematurely) |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1234 | 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] | 1235 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1236 | // p = coords2D |
| 1237 | // e = center end |
| 1238 | // r = radius end |
| 1239 | // A = dot(e, e) - r^2 + 2 * r - 1 |
| 1240 | // B = (r -1) / A |
| 1241 | // C = 1 / A |
| 1242 | // d = dot(e, p) + B |
| 1243 | // t = d +/- sqrt(d^2 - A * dot(p, p) + C) |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1244 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1245 | fsBuilder->codeAppendf("\tfloat pDotp = dot(%s, %s);\n", coords2D, coords2D); |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 1246 | fsBuilder->codeAppendf("\tfloat d = dot(%s, %s) + %s.y;\n", coords2D, center.c_str(), |
| 1247 | params.c_str()); |
| 1248 | fsBuilder->codeAppendf("\tfloat deter = d * d - %s.x * pDotp + %s.z;\n", params.c_str(), |
| 1249 | params.c_str()); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1250 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1251 | // Must check to see if we flipped the circle order (to make sure start radius < end radius) |
| 1252 | // If so we must also flip sign on sqrt |
| 1253 | if (!fIsFlipped) { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1254 | fsBuilder->codeAppendf("\tfloat %s = d + sqrt(deter);\n", tName.c_str()); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1255 | } else { |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1256 | 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] | 1257 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1258 | |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1259 | fsBuilder->codeAppendf("\tif (%s >= %s.w && deter >= 0.0) {\n", tName.c_str(), params.c_str()); |
| 1260 | fsBuilder->codeAppend("\t\t"); |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 1261 | this->emitColor(builder, tName.c_str(), baseKey, outputColor, inputColor, samplers); |
joshualitt | 30ba436 | 2014-08-21 20:18:45 -0700 | [diff] [blame] | 1262 | fsBuilder->codeAppend("\t}\n"); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1263 | } |
| 1264 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 1265 | void GLCircleOutside2PtConicalEffect::setData(const GrGLProgramDataManager& pdman, |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 1266 | const GrProcessor& processor) { |
| 1267 | INHERITED::setData(pdman, processor); |
| 1268 | const CircleOutside2PtConicalEffect& data = processor.cast<CircleOutside2PtConicalEffect>(); |
commit-bot@chromium.org | 44d83c1 | 2014-04-21 13:10:25 +0000 | [diff] [blame] | 1269 | SkASSERT(data.isFlipped() == fIsFlipped); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1270 | SkScalar centerX = data.centerX(); |
| 1271 | SkScalar centerY = data.centerY(); |
| 1272 | SkScalar A = data.A(); |
| 1273 | SkScalar B = data.B(); |
| 1274 | SkScalar C = data.C(); |
| 1275 | SkScalar tLimit = data.tLimit(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1276 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1277 | if (fCachedCenterX != centerX || fCachedCenterY != centerY || |
| 1278 | fCachedA != A || fCachedB != B || fCachedC != C || fCachedTLimit != tLimit) { |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1279 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 1280 | pdman.set2f(fCenterUni, SkScalarToFloat(centerX), SkScalarToFloat(centerY)); |
| 1281 | pdman.set4f(fParamUni, SkScalarToFloat(A), SkScalarToFloat(B), SkScalarToFloat(C), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1282 | SkScalarToFloat(tLimit)); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1283 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1284 | fCachedCenterX = centerX; |
| 1285 | fCachedCenterY = centerY; |
| 1286 | fCachedA = A; |
| 1287 | fCachedB = B; |
| 1288 | fCachedC = C; |
| 1289 | fCachedTLimit = tLimit; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1290 | } |
| 1291 | } |
| 1292 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 1293 | void GLCircleOutside2PtConicalEffect::GenKey(const GrProcessor& processor, |
| 1294 | const GrGLCaps&, GrProcessorKeyBuilder* b) { |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 1295 | uint32_t* key = b->add32n(2); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 1296 | key[0] = GenBaseGradientKey(processor); |
| 1297 | key[1] = processor.cast<CircleOutside2PtConicalEffect>().isFlipped(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1298 | } |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1299 | |
| 1300 | ////////////////////////////////////////////////////////////////////////////// |
| 1301 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame^] | 1302 | GrFragmentProcessor* Gr2PtConicalGradientEffect::Create(GrContext* ctx, |
| 1303 | const SkTwoPointConicalGradient& shader, |
| 1304 | SkShader::TileMode tm, |
| 1305 | const SkMatrix* localMatrix) { |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1306 | SkMatrix matrix; |
| 1307 | if (!shader.getLocalMatrix().invert(&matrix)) { |
| 1308 | return NULL; |
| 1309 | } |
commit-bot@chromium.org | 96fb748 | 2014-05-09 20:28:11 +0000 | [diff] [blame] | 1310 | if (localMatrix) { |
| 1311 | SkMatrix inv; |
| 1312 | if (!localMatrix->invert(&inv)) { |
| 1313 | return NULL; |
| 1314 | } |
| 1315 | matrix.postConcat(inv); |
| 1316 | } |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1317 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1318 | if (shader.getStartRadius() < kErrorTol) { |
| 1319 | SkScalar focalX; |
| 1320 | ConicalType type = set_matrix_focal_conical(shader, &matrix, &focalX); |
| 1321 | if (type == kInside_ConicalType) { |
| 1322 | return FocalInside2PtConicalEffect::Create(ctx, shader, matrix, tm, focalX); |
| 1323 | } else if(type == kEdge_ConicalType) { |
| 1324 | set_matrix_edge_conical(shader, &matrix); |
| 1325 | return Edge2PtConicalEffect::Create(ctx, shader, matrix, tm); |
| 1326 | } else { |
| 1327 | return FocalOutside2PtConicalEffect::Create(ctx, shader, matrix, tm, focalX); |
| 1328 | } |
| 1329 | } |
| 1330 | |
| 1331 | CircleConicalInfo info; |
| 1332 | ConicalType type = set_matrix_circle_conical(shader, &matrix, &info); |
| 1333 | |
| 1334 | if (type == kInside_ConicalType) { |
| 1335 | return CircleInside2PtConicalEffect::Create(ctx, shader, matrix, tm, info); |
| 1336 | } else if (type == kEdge_ConicalType) { |
| 1337 | set_matrix_edge_conical(shader, &matrix); |
| 1338 | return Edge2PtConicalEffect::Create(ctx, shader, matrix, tm); |
| 1339 | } else { |
| 1340 | return CircleOutside2PtConicalEffect::Create(ctx, shader, matrix, tm, info); |
| 1341 | } |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1342 | } |
| 1343 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1344 | #endif |