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 |
commit-bot@chromium.org | 7f43493 | 2014-04-10 16:03:06 +0000 | [diff] [blame] | 14 | #include "GrTBackendEffectFactory.h" |
bsalomon | 848faf0 | 2014-07-11 10:01:02 -0700 | [diff] [blame] | 15 | #include "gl/GrGLShaderBuilder.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 | |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 63 | static GrEffect* 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"; } |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 73 | virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE; |
| 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 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 80 | typedef GLEdge2PtConicalEffect GLEffect; |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 81 | |
| 82 | private: |
| 83 | virtual bool onIsEqual(const GrEffect& sBase) const SK_OVERRIDE { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 84 | const Edge2PtConicalEffect& s = CastEffect<Edge2PtConicalEffect>(sBase); |
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 |
| 101 | // start radius was close to zero, otherwise we scaled by the start radius |
| 102 | SkASSERT(SkScalarAbs(SkScalarAbs(fDiffRadius) - SkScalarAbs(fCenterX1)) < |
| 103 | kEdgeErrorTol * (fRadius0 < kErrorTol ? shader.getEndRadius() : fRadius0)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 104 | |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 105 | // We pass the linear part of the quadratic as a varying. |
| 106 | // float b = -2.0 * (fCenterX1 * x + fRadius0 * fDiffRadius * z) |
| 107 | fBTransform = this->getCoordTransform(); |
| 108 | SkMatrix& bMatrix = *fBTransform.accessMatrix(); |
| 109 | SkScalar r0dr = SkScalarMul(fRadius0, fDiffRadius); |
| 110 | bMatrix[SkMatrix::kMScaleX] = -2 * (SkScalarMul(fCenterX1, bMatrix[SkMatrix::kMScaleX]) + |
| 111 | SkScalarMul(r0dr, bMatrix[SkMatrix::kMPersp0])); |
| 112 | bMatrix[SkMatrix::kMSkewX] = -2 * (SkScalarMul(fCenterX1, bMatrix[SkMatrix::kMSkewX]) + |
| 113 | SkScalarMul(r0dr, bMatrix[SkMatrix::kMPersp1])); |
| 114 | bMatrix[SkMatrix::kMTransX] = -2 * (SkScalarMul(fCenterX1, bMatrix[SkMatrix::kMTransX]) + |
| 115 | SkScalarMul(r0dr, bMatrix[SkMatrix::kMPersp2])); |
| 116 | this->addCoordTransform(&fBTransform); |
| 117 | } |
| 118 | |
| 119 | GR_DECLARE_EFFECT_TEST; |
| 120 | |
| 121 | // @{ |
| 122 | // Cache of values - these can change arbitrarily, EXCEPT |
| 123 | // we shouldn't change between degenerate and non-degenerate?! |
| 124 | |
| 125 | GrCoordTransform fBTransform; |
| 126 | SkScalar fCenterX1; |
| 127 | SkScalar fRadius0; |
| 128 | SkScalar fDiffRadius; |
| 129 | |
| 130 | // @} |
| 131 | |
| 132 | typedef GrGradientEffect INHERITED; |
| 133 | }; |
| 134 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 135 | class GLEdge2PtConicalEffect : public GrGLGradientEffect { |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 136 | public: |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 137 | GLEdge2PtConicalEffect(const GrBackendEffectFactory& factory, const GrDrawEffect&); |
| 138 | virtual ~GLEdge2PtConicalEffect() { } |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 139 | |
| 140 | virtual void emitCode(GrGLShaderBuilder*, |
| 141 | const GrDrawEffect&, |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 142 | const GrEffectKey&, |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 143 | const char* outputColor, |
| 144 | const char* inputColor, |
| 145 | const TransformedCoordsArray&, |
| 146 | const TextureSamplerArray&) SK_OVERRIDE; |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame^] | 147 | virtual void setData(const GrGLProgramDataManager&, const GrDrawEffect&) SK_OVERRIDE; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 148 | |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 149 | static void GenKey(const GrDrawEffect&, const GrGLCaps& caps, GrEffectKeyBuilder* b); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 150 | |
| 151 | protected: |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 152 | UniformHandle fParamUni; |
| 153 | |
| 154 | const char* fVSVaryingName; |
| 155 | const char* fFSVaryingName; |
| 156 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 157 | // @{ |
| 158 | /// Values last uploaded as uniforms |
| 159 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 160 | SkScalar fCachedRadius; |
| 161 | SkScalar fCachedDiffRadius; |
| 162 | |
| 163 | // @} |
| 164 | |
| 165 | private: |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 166 | typedef GrGLGradientEffect INHERITED; |
| 167 | |
| 168 | }; |
| 169 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 170 | const GrBackendEffectFactory& Edge2PtConicalEffect::getFactory() const { |
| 171 | return GrTBackendEffectFactory<Edge2PtConicalEffect>::getInstance(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 172 | } |
skia.committer@gmail.com | 221b911 | 2014-04-04 03:04:32 +0000 | [diff] [blame] | 173 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 174 | GR_DEFINE_EFFECT_TEST(Edge2PtConicalEffect); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 175 | |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 176 | GrEffect* Edge2PtConicalEffect::TestCreate(SkRandom* random, |
| 177 | GrContext* context, |
| 178 | const GrDrawTargetCaps&, |
| 179 | GrTexture**) { |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 180 | SkPoint center1 = {random->nextUScalar1(), random->nextUScalar1()}; |
| 181 | SkScalar radius1 = random->nextUScalar1(); |
| 182 | SkPoint center2; |
| 183 | SkScalar radius2; |
| 184 | do { |
| 185 | center2.set(random->nextUScalar1(), random->nextUScalar1()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 186 | // If the circles are identical the factory will give us an empty shader. |
| 187 | // This will happen if we pick identical centers |
| 188 | } while (center1 == center2); |
| 189 | |
| 190 | // Below makes sure that circle one is contained within circle two |
| 191 | // and both circles are touching on an edge |
| 192 | SkPoint diff = center2 - center1; |
| 193 | SkScalar diffLen = diff.length(); |
| 194 | radius2 = radius1 + diffLen; |
| 195 | |
| 196 | SkColor colors[kMaxRandomGradientColors]; |
| 197 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 198 | SkScalar* stops = stopsArray; |
| 199 | SkShader::TileMode tm; |
| 200 | int colorCount = RandomGradientParams(random, colors, &stops, &tm); |
| 201 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 202 | center2, radius2, |
| 203 | colors, stops, colorCount, |
| 204 | tm)); |
| 205 | SkPaint paint; |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 206 | GrEffect* effect; |
| 207 | GrColor paintColor; |
| 208 | SkAssertResult(shader->asNewEffect(context, paint, NULL, &paintColor, &effect)); |
dandov | 9de5b51 | 2014-06-10 14:38:28 -0700 | [diff] [blame] | 209 | return effect; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 210 | } |
| 211 | |
| 212 | GLEdge2PtConicalEffect::GLEdge2PtConicalEffect(const GrBackendEffectFactory& factory, |
| 213 | const GrDrawEffect& drawEffect) |
| 214 | : INHERITED(factory) |
| 215 | , fVSVaryingName(NULL) |
| 216 | , fFSVaryingName(NULL) |
| 217 | , fCachedRadius(-SK_ScalarMax) |
| 218 | , fCachedDiffRadius(-SK_ScalarMax) {} |
| 219 | |
| 220 | void GLEdge2PtConicalEffect::emitCode(GrGLShaderBuilder* builder, |
| 221 | const GrDrawEffect&, |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 222 | const GrEffectKey& key, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 223 | const char* outputColor, |
| 224 | const char* inputColor, |
| 225 | const TransformedCoordsArray& coords, |
| 226 | const TextureSamplerArray& samplers) { |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 227 | uint32_t baseKey = key.get32(0); |
| 228 | this->emitUniforms(builder, baseKey); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 229 | fParamUni = builder->addUniformArray(GrGLShaderBuilder::kFragment_Visibility, |
| 230 | kFloat_GrSLType, "Conical2FSParams", 3); |
| 231 | |
| 232 | SkString cName("c"); |
| 233 | SkString tName("t"); |
| 234 | SkString p0; // start radius |
| 235 | SkString p1; // start radius squared |
| 236 | SkString p2; // difference in radii (r1 - r0) |
| 237 | |
| 238 | builder->getUniformVariable(fParamUni).appendArrayAccess(0, &p0); |
| 239 | builder->getUniformVariable(fParamUni).appendArrayAccess(1, &p1); |
| 240 | builder->getUniformVariable(fParamUni).appendArrayAccess(2, &p2); |
| 241 | |
| 242 | // We interpolate the linear component in coords[1]. |
| 243 | SkASSERT(coords[0].type() == coords[1].type()); |
| 244 | const char* coords2D; |
| 245 | SkString bVar; |
| 246 | if (kVec3f_GrSLType == coords[0].type()) { |
| 247 | builder->fsCodeAppendf("\tvec3 interpolants = vec3(%s.xy / %s.z, %s.x / %s.z);\n", |
| 248 | coords[0].c_str(), coords[0].c_str(), coords[1].c_str(), coords[1].c_str()); |
| 249 | coords2D = "interpolants.xy"; |
| 250 | bVar = "interpolants.z"; |
| 251 | } else { |
| 252 | coords2D = coords[0].c_str(); |
| 253 | bVar.printf("%s.x", coords[1].c_str()); |
| 254 | } |
| 255 | |
| 256 | // output will default to transparent black (we simply won't write anything |
| 257 | // else to it if invalid, instead of discarding or returning prematurely) |
| 258 | builder->fsCodeAppendf("\t%s = vec4(0.0,0.0,0.0,0.0);\n", outputColor); |
| 259 | |
| 260 | // c = (x^2)+(y^2) - params[1] |
| 261 | builder->fsCodeAppendf("\tfloat %s = dot(%s, %s) - %s;\n", |
| 262 | cName.c_str(), coords2D, coords2D, p1.c_str()); |
| 263 | |
| 264 | // linear case: t = -c/b |
| 265 | builder->fsCodeAppendf("\tfloat %s = -(%s / %s);\n", tName.c_str(), |
| 266 | cName.c_str(), bVar.c_str()); |
| 267 | |
| 268 | // if r(t) > 0, then t will be the x coordinate |
| 269 | builder->fsCodeAppendf("\tif (%s * %s + %s > 0.0) {\n", tName.c_str(), |
| 270 | p2.c_str(), p0.c_str()); |
| 271 | builder->fsCodeAppend("\t"); |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 272 | this->emitColor(builder, tName.c_str(), baseKey, outputColor, inputColor, samplers); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 273 | builder->fsCodeAppend("\t}\n"); |
| 274 | } |
| 275 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame^] | 276 | void GLEdge2PtConicalEffect::setData(const GrGLProgramDataManager& pdman, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 277 | const GrDrawEffect& drawEffect) { |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame^] | 278 | INHERITED::setData(pdman, drawEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 279 | const Edge2PtConicalEffect& data = drawEffect.castEffect<Edge2PtConicalEffect>(); |
| 280 | SkScalar radius0 = data.radius(); |
| 281 | SkScalar diffRadius = data.diffRadius(); |
| 282 | |
| 283 | if (fCachedRadius != radius0 || |
| 284 | fCachedDiffRadius != diffRadius) { |
| 285 | |
| 286 | float values[3] = { |
| 287 | SkScalarToFloat(radius0), |
| 288 | SkScalarToFloat(SkScalarMul(radius0, radius0)), |
| 289 | SkScalarToFloat(diffRadius) |
| 290 | }; |
| 291 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame^] | 292 | pdman.set1fv(fParamUni, 3, values); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 293 | fCachedRadius = radius0; |
| 294 | fCachedDiffRadius = diffRadius; |
| 295 | } |
| 296 | } |
| 297 | |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 298 | void GLEdge2PtConicalEffect::GenKey(const GrDrawEffect& drawEffect, |
| 299 | const GrGLCaps&, GrEffectKeyBuilder* b) { |
| 300 | b->add32(GenBaseGradientKey(drawEffect)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 301 | } |
| 302 | |
| 303 | ////////////////////////////////////////////////////////////////////////////// |
| 304 | // Focal Conical Gradients |
| 305 | ////////////////////////////////////////////////////////////////////////////// |
| 306 | |
| 307 | static ConicalType set_matrix_focal_conical(const SkTwoPointConicalGradient& shader, |
| 308 | SkMatrix* invLMatrix, SkScalar* focalX) { |
| 309 | // Inverse of the current local matrix is passed in then, |
| 310 | // translate, scale, and rotate such that endCircle is unit circle on x-axis, |
| 311 | // and focal point is at the origin. |
| 312 | ConicalType conicalType; |
| 313 | const SkPoint& focal = shader.getStartCenter(); |
| 314 | const SkPoint& centerEnd = shader.getEndCenter(); |
| 315 | SkScalar radius = shader.getEndRadius(); |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 316 | SkScalar invRadius = 1.f / radius; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 317 | |
| 318 | SkMatrix matrix; |
| 319 | |
| 320 | matrix.setTranslate(-centerEnd.fX, -centerEnd.fY); |
| 321 | matrix.postScale(invRadius, invRadius); |
| 322 | |
| 323 | SkPoint focalTrans; |
| 324 | matrix.mapPoints(&focalTrans, &focal, 1); |
| 325 | *focalX = focalTrans.length(); |
| 326 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 327 | if (0.f != *focalX) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 328 | SkScalar invFocalX = SkScalarInvert(*focalX); |
| 329 | SkMatrix rot; |
| 330 | rot.setSinCos(-SkScalarMul(invFocalX, focalTrans.fY), |
| 331 | SkScalarMul(invFocalX, focalTrans.fX)); |
| 332 | matrix.postConcat(rot); |
| 333 | } |
| 334 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 335 | matrix.postTranslate(-(*focalX), 0.f); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 336 | |
| 337 | // If the focal point is touching the edge of the circle it will |
| 338 | // cause a degenerate case that must be handled separately |
egdaniel | 8405ef9 | 2014-06-09 11:57:28 -0700 | [diff] [blame] | 339 | // kEdgeErrorTol = 5 * kErrorTol was picked after manual testing the |
| 340 | // stability trade off versus the linear approx used in the Edge Shader |
| 341 | if (SkScalarAbs(1.f - (*focalX)) < kEdgeErrorTol) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 342 | return kEdge_ConicalType; |
| 343 | } |
| 344 | |
| 345 | // Scale factor 1 / (1 - focalX * focalX) |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 346 | SkScalar oneMinusF2 = 1.f - SkScalarMul(*focalX, *focalX); |
| 347 | SkScalar s = SkScalarDiv(1.f, oneMinusF2); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 348 | |
| 349 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 350 | if (s >= 0.f) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 351 | conicalType = kInside_ConicalType; |
| 352 | matrix.postScale(s, s * SkScalarSqrt(oneMinusF2)); |
| 353 | } else { |
| 354 | conicalType = kOutside_ConicalType; |
| 355 | matrix.postScale(s, s); |
| 356 | } |
| 357 | |
| 358 | invLMatrix->postConcat(matrix); |
| 359 | |
| 360 | return conicalType; |
| 361 | } |
| 362 | |
| 363 | ////////////////////////////////////////////////////////////////////////////// |
| 364 | |
| 365 | class GLFocalOutside2PtConicalEffect; |
| 366 | |
| 367 | class FocalOutside2PtConicalEffect : public GrGradientEffect { |
| 368 | public: |
| 369 | |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 370 | static GrEffect* Create(GrContext* ctx, |
| 371 | const SkTwoPointConicalGradient& shader, |
| 372 | const SkMatrix& matrix, |
| 373 | SkShader::TileMode tm, |
| 374 | SkScalar focalX) { |
bsalomon | 55fad7a | 2014-07-08 07:34:20 -0700 | [diff] [blame] | 375 | return SkNEW_ARGS(FocalOutside2PtConicalEffect, (ctx, shader, matrix, tm, focalX)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 376 | } |
| 377 | |
| 378 | virtual ~FocalOutside2PtConicalEffect() { } |
| 379 | |
| 380 | static const char* Name() { return "Two-Point Conical Gradient Focal Outside"; } |
| 381 | virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE; |
| 382 | |
| 383 | bool isFlipped() const { return fIsFlipped; } |
| 384 | SkScalar focal() const { return fFocalX; } |
| 385 | |
| 386 | typedef GLFocalOutside2PtConicalEffect GLEffect; |
| 387 | |
| 388 | private: |
| 389 | virtual bool onIsEqual(const GrEffect& sBase) const SK_OVERRIDE { |
| 390 | const FocalOutside2PtConicalEffect& s = CastEffect<FocalOutside2PtConicalEffect>(sBase); |
| 391 | return (INHERITED::onIsEqual(sBase) && |
| 392 | this->fFocalX == s.fFocalX && |
| 393 | this->fIsFlipped == s.fIsFlipped); |
| 394 | } |
| 395 | |
| 396 | FocalOutside2PtConicalEffect(GrContext* ctx, |
| 397 | const SkTwoPointConicalGradient& shader, |
| 398 | const SkMatrix& matrix, |
| 399 | SkShader::TileMode tm, |
| 400 | SkScalar focalX) |
| 401 | : INHERITED(ctx, shader, matrix, tm), fFocalX(focalX), fIsFlipped(shader.isFlippedGrad()) {} |
| 402 | |
| 403 | GR_DECLARE_EFFECT_TEST; |
| 404 | |
| 405 | SkScalar fFocalX; |
| 406 | bool fIsFlipped; |
| 407 | |
| 408 | typedef GrGradientEffect INHERITED; |
| 409 | }; |
| 410 | |
| 411 | class GLFocalOutside2PtConicalEffect : public GrGLGradientEffect { |
| 412 | public: |
| 413 | GLFocalOutside2PtConicalEffect(const GrBackendEffectFactory& factory, const GrDrawEffect&); |
| 414 | virtual ~GLFocalOutside2PtConicalEffect() { } |
| 415 | |
| 416 | virtual void emitCode(GrGLShaderBuilder*, |
| 417 | const GrDrawEffect&, |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 418 | const GrEffectKey&, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 419 | const char* outputColor, |
| 420 | const char* inputColor, |
| 421 | const TransformedCoordsArray&, |
| 422 | const TextureSamplerArray&) SK_OVERRIDE; |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame^] | 423 | virtual void setData(const GrGLProgramDataManager&, const GrDrawEffect&) SK_OVERRIDE; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 424 | |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 425 | static void GenKey(const GrDrawEffect&, const GrGLCaps& caps, GrEffectKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 426 | |
| 427 | protected: |
| 428 | UniformHandle fParamUni; |
| 429 | |
| 430 | const char* fVSVaryingName; |
| 431 | const char* fFSVaryingName; |
| 432 | |
| 433 | bool fIsFlipped; |
| 434 | |
| 435 | // @{ |
| 436 | /// Values last uploaded as uniforms |
| 437 | |
| 438 | SkScalar fCachedFocal; |
| 439 | |
| 440 | // @} |
| 441 | |
| 442 | private: |
| 443 | typedef GrGLGradientEffect INHERITED; |
| 444 | |
| 445 | }; |
| 446 | |
| 447 | const GrBackendEffectFactory& FocalOutside2PtConicalEffect::getFactory() const { |
| 448 | return GrTBackendEffectFactory<FocalOutside2PtConicalEffect>::getInstance(); |
| 449 | } |
| 450 | |
| 451 | GR_DEFINE_EFFECT_TEST(FocalOutside2PtConicalEffect); |
| 452 | |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 453 | GrEffect* FocalOutside2PtConicalEffect::TestCreate(SkRandom* random, |
| 454 | GrContext* context, |
| 455 | const GrDrawTargetCaps&, |
| 456 | GrTexture**) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 457 | SkPoint center1 = {random->nextUScalar1(), random->nextUScalar1()}; |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 458 | SkScalar radius1 = 0.f; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 459 | SkPoint center2; |
| 460 | SkScalar radius2; |
| 461 | do { |
| 462 | center2.set(random->nextUScalar1(), random->nextUScalar1()); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 463 | // 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] | 464 | } while (center1 == center2); |
| 465 | SkPoint diff = center2 - center1; |
| 466 | SkScalar diffLen = diff.length(); |
| 467 | // 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] | 468 | radius2 = random->nextRangeF(0.f, diffLen); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 469 | |
| 470 | SkColor colors[kMaxRandomGradientColors]; |
| 471 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 472 | SkScalar* stops = stopsArray; |
| 473 | SkShader::TileMode tm; |
| 474 | int colorCount = RandomGradientParams(random, colors, &stops, &tm); |
| 475 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 476 | center2, radius2, |
| 477 | colors, stops, colorCount, |
| 478 | tm)); |
| 479 | SkPaint paint; |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 480 | GrEffect* effect; |
| 481 | GrColor paintColor; |
| 482 | SkAssertResult(shader->asNewEffect(context, paint, NULL, &paintColor, &effect)); |
dandov | 9de5b51 | 2014-06-10 14:38:28 -0700 | [diff] [blame] | 483 | return effect; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 484 | } |
| 485 | |
| 486 | GLFocalOutside2PtConicalEffect::GLFocalOutside2PtConicalEffect(const GrBackendEffectFactory& factory, |
| 487 | const GrDrawEffect& drawEffect) |
| 488 | : INHERITED(factory) |
| 489 | , fVSVaryingName(NULL) |
| 490 | , fFSVaryingName(NULL) |
| 491 | , fCachedFocal(SK_ScalarMax) { |
| 492 | const FocalOutside2PtConicalEffect& data = drawEffect.castEffect<FocalOutside2PtConicalEffect>(); |
| 493 | fIsFlipped = data.isFlipped(); |
| 494 | } |
| 495 | |
| 496 | void GLFocalOutside2PtConicalEffect::emitCode(GrGLShaderBuilder* builder, |
| 497 | const GrDrawEffect&, |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 498 | const GrEffectKey& key, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 499 | const char* outputColor, |
| 500 | const char* inputColor, |
| 501 | const TransformedCoordsArray& coords, |
| 502 | const TextureSamplerArray& samplers) { |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 503 | uint32_t baseKey = key.get32(0); |
| 504 | this->emitUniforms(builder, baseKey); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 505 | fParamUni = builder->addUniformArray(GrGLShaderBuilder::kFragment_Visibility, |
| 506 | kFloat_GrSLType, "Conical2FSParams", 2); |
| 507 | SkString tName("t"); |
| 508 | SkString p0; // focalX |
| 509 | SkString p1; // 1 - focalX * focalX |
| 510 | |
| 511 | builder->getUniformVariable(fParamUni).appendArrayAccess(0, &p0); |
| 512 | builder->getUniformVariable(fParamUni).appendArrayAccess(1, &p1); |
| 513 | |
| 514 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 515 | SkString coords2DString = builder->ensureFSCoords2D(coords, 0); |
| 516 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 517 | |
| 518 | // t = p.x * focal.x +/- sqrt(p.x^2 + (1 - focal.x^2) * p.y^2) |
| 519 | |
| 520 | // output will default to transparent black (we simply won't write anything |
| 521 | // else to it if invalid, instead of discarding or returning prematurely) |
| 522 | builder->fsCodeAppendf("\t%s = vec4(0.0,0.0,0.0,0.0);\n", outputColor); |
| 523 | |
| 524 | builder->fsCodeAppendf("\tfloat xs = %s.x * %s.x;\n", coords2D, coords2D); |
| 525 | builder->fsCodeAppendf("\tfloat ys = %s.y * %s.y;\n", coords2D, coords2D); |
| 526 | builder->fsCodeAppendf("\tfloat d = xs + %s * ys;\n", p1.c_str()); |
| 527 | |
| 528 | // Must check to see if we flipped the circle order (to make sure start radius < end radius) |
| 529 | // If so we must also flip sign on sqrt |
| 530 | if (!fIsFlipped) { |
| 531 | builder->fsCodeAppendf("\tfloat %s = %s.x * %s + sqrt(d);\n", tName.c_str(), |
| 532 | coords2D, p0.c_str()); |
| 533 | } else { |
| 534 | builder->fsCodeAppendf("\tfloat %s = %s.x * %s - sqrt(d);\n", tName.c_str(), |
| 535 | coords2D, p0.c_str()); |
| 536 | } |
| 537 | |
| 538 | builder->fsCodeAppendf("\tif (%s >= 0.0 && d >= 0.0) {\n", tName.c_str()); |
| 539 | builder->fsCodeAppend("\t\t"); |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 540 | this->emitColor(builder, tName.c_str(), baseKey, outputColor, inputColor, samplers); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 541 | builder->fsCodeAppend("\t}\n"); |
| 542 | } |
| 543 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame^] | 544 | void GLFocalOutside2PtConicalEffect::setData(const GrGLProgramDataManager& pdman, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 545 | const GrDrawEffect& drawEffect) { |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame^] | 546 | INHERITED::setData(pdman, drawEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 547 | const FocalOutside2PtConicalEffect& data = drawEffect.castEffect<FocalOutside2PtConicalEffect>(); |
| 548 | SkASSERT(data.isFlipped() == fIsFlipped); |
| 549 | SkScalar focal = data.focal(); |
| 550 | |
| 551 | if (fCachedFocal != focal) { |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 552 | SkScalar oneMinus2F = 1.f - SkScalarMul(focal, focal); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 553 | |
| 554 | float values[2] = { |
| 555 | SkScalarToFloat(focal), |
| 556 | SkScalarToFloat(oneMinus2F), |
| 557 | }; |
| 558 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame^] | 559 | pdman.set1fv(fParamUni, 2, values); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 560 | fCachedFocal = focal; |
| 561 | } |
| 562 | } |
| 563 | |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 564 | void GLFocalOutside2PtConicalEffect::GenKey(const GrDrawEffect& drawEffect, |
| 565 | const GrGLCaps&, GrEffectKeyBuilder* b) { |
| 566 | uint32_t* key = b->add32n(2); |
| 567 | key[0] = GenBaseGradientKey(drawEffect); |
| 568 | key[1] = drawEffect.castEffect<FocalOutside2PtConicalEffect>().isFlipped(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 569 | } |
| 570 | |
| 571 | ////////////////////////////////////////////////////////////////////////////// |
| 572 | |
| 573 | class GLFocalInside2PtConicalEffect; |
| 574 | |
| 575 | class FocalInside2PtConicalEffect : public GrGradientEffect { |
| 576 | public: |
| 577 | |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 578 | static GrEffect* Create(GrContext* ctx, |
| 579 | const SkTwoPointConicalGradient& shader, |
| 580 | const SkMatrix& matrix, |
| 581 | SkShader::TileMode tm, |
| 582 | SkScalar focalX) { |
bsalomon | 55fad7a | 2014-07-08 07:34:20 -0700 | [diff] [blame] | 583 | return SkNEW_ARGS(FocalInside2PtConicalEffect, (ctx, shader, matrix, tm, focalX)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 584 | } |
| 585 | |
| 586 | virtual ~FocalInside2PtConicalEffect() {} |
| 587 | |
| 588 | static const char* Name() { return "Two-Point Conical Gradient Focal Inside"; } |
| 589 | virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE; |
| 590 | |
| 591 | SkScalar focal() const { return fFocalX; } |
| 592 | |
| 593 | typedef GLFocalInside2PtConicalEffect GLEffect; |
| 594 | |
| 595 | private: |
| 596 | virtual bool onIsEqual(const GrEffect& sBase) const SK_OVERRIDE { |
| 597 | const FocalInside2PtConicalEffect& s = CastEffect<FocalInside2PtConicalEffect>(sBase); |
| 598 | return (INHERITED::onIsEqual(sBase) && |
| 599 | this->fFocalX == s.fFocalX); |
| 600 | } |
| 601 | |
| 602 | FocalInside2PtConicalEffect(GrContext* ctx, |
| 603 | const SkTwoPointConicalGradient& shader, |
| 604 | const SkMatrix& matrix, |
| 605 | SkShader::TileMode tm, |
| 606 | SkScalar focalX) |
| 607 | : INHERITED(ctx, shader, matrix, tm), fFocalX(focalX) {} |
| 608 | |
| 609 | GR_DECLARE_EFFECT_TEST; |
| 610 | |
| 611 | SkScalar fFocalX; |
| 612 | |
| 613 | typedef GrGradientEffect INHERITED; |
| 614 | }; |
| 615 | |
| 616 | class GLFocalInside2PtConicalEffect : public GrGLGradientEffect { |
| 617 | public: |
| 618 | GLFocalInside2PtConicalEffect(const GrBackendEffectFactory& factory, const GrDrawEffect&); |
| 619 | virtual ~GLFocalInside2PtConicalEffect() {} |
| 620 | |
| 621 | virtual void emitCode(GrGLShaderBuilder*, |
| 622 | const GrDrawEffect&, |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 623 | const GrEffectKey&, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 624 | const char* outputColor, |
| 625 | const char* inputColor, |
| 626 | const TransformedCoordsArray&, |
| 627 | const TextureSamplerArray&) SK_OVERRIDE; |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame^] | 628 | virtual void setData(const GrGLProgramDataManager&, const GrDrawEffect&) SK_OVERRIDE; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 629 | |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 630 | static void GenKey(const GrDrawEffect&, const GrGLCaps& caps, GrEffectKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 631 | |
| 632 | protected: |
| 633 | UniformHandle fFocalUni; |
| 634 | |
| 635 | const char* fVSVaryingName; |
| 636 | const char* fFSVaryingName; |
| 637 | |
| 638 | // @{ |
| 639 | /// Values last uploaded as uniforms |
| 640 | |
| 641 | SkScalar fCachedFocal; |
| 642 | |
| 643 | // @} |
| 644 | |
| 645 | private: |
| 646 | typedef GrGLGradientEffect INHERITED; |
| 647 | |
| 648 | }; |
| 649 | |
| 650 | const GrBackendEffectFactory& FocalInside2PtConicalEffect::getFactory() const { |
| 651 | return GrTBackendEffectFactory<FocalInside2PtConicalEffect>::getInstance(); |
| 652 | } |
| 653 | |
| 654 | GR_DEFINE_EFFECT_TEST(FocalInside2PtConicalEffect); |
| 655 | |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 656 | GrEffect* FocalInside2PtConicalEffect::TestCreate(SkRandom* random, |
| 657 | GrContext* context, |
| 658 | const GrDrawTargetCaps&, |
| 659 | GrTexture**) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 660 | SkPoint center1 = {random->nextUScalar1(), random->nextUScalar1()}; |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 661 | SkScalar radius1 = 0.f; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 662 | SkPoint center2; |
| 663 | SkScalar radius2; |
| 664 | do { |
| 665 | center2.set(random->nextUScalar1(), random->nextUScalar1()); |
| 666 | // Below makes sure radius2 is larger enouch such that the focal point |
| 667 | // is inside the end circle |
| 668 | SkScalar increase = random->nextUScalar1(); |
| 669 | SkPoint diff = center2 - center1; |
| 670 | SkScalar diffLen = diff.length(); |
| 671 | radius2 = diffLen + increase; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 672 | // If the circles are identical the factory will give us an empty shader. |
| 673 | } while (radius1 == radius2 && center1 == center2); |
| 674 | |
| 675 | SkColor colors[kMaxRandomGradientColors]; |
| 676 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 677 | SkScalar* stops = stopsArray; |
| 678 | SkShader::TileMode tm; |
| 679 | int colorCount = RandomGradientParams(random, colors, &stops, &tm); |
| 680 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 681 | center2, radius2, |
| 682 | colors, stops, colorCount, |
| 683 | tm)); |
| 684 | SkPaint paint; |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 685 | GrColor paintColor; |
| 686 | GrEffect* effect; |
| 687 | SkAssertResult(shader->asNewEffect(context, paint, NULL, &paintColor, &effect)); |
| 688 | return effect; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 689 | } |
| 690 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 691 | GLFocalInside2PtConicalEffect::GLFocalInside2PtConicalEffect(const GrBackendEffectFactory& factory, |
| 692 | const GrDrawEffect& drawEffect) |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 693 | : INHERITED(factory) |
| 694 | , fVSVaryingName(NULL) |
| 695 | , fFSVaryingName(NULL) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 696 | , fCachedFocal(SK_ScalarMax) {} |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 697 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 698 | void GLFocalInside2PtConicalEffect::emitCode(GrGLShaderBuilder* builder, |
| 699 | const GrDrawEffect&, |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 700 | const GrEffectKey& key, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 701 | const char* outputColor, |
| 702 | const char* inputColor, |
| 703 | const TransformedCoordsArray& coords, |
| 704 | const TextureSamplerArray& samplers) { |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 705 | uint32_t baseKey = key.get32(0); |
| 706 | this->emitUniforms(builder, baseKey); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 707 | fFocalUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility, |
| 708 | kFloat_GrSLType, "Conical2FSParams"); |
| 709 | SkString tName("t"); |
| 710 | |
| 711 | // this is the distance along x-axis from the end center to focal point in |
| 712 | // transformed coordinates |
| 713 | GrGLShaderVar focal = builder->getUniformVariable(fFocalUni); |
| 714 | |
| 715 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 716 | SkString coords2DString = builder->ensureFSCoords2D(coords, 0); |
| 717 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 718 | |
| 719 | // t = p.x * focalX + length(p) |
| 720 | builder->fsCodeAppendf("\tfloat %s = %s.x * %s + length(%s);\n", tName.c_str(), |
| 721 | coords2D, focal.c_str(), coords2D); |
| 722 | |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 723 | this->emitColor(builder, tName.c_str(), baseKey, outputColor, inputColor, samplers); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 724 | } |
| 725 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame^] | 726 | void GLFocalInside2PtConicalEffect::setData(const GrGLProgramDataManager& pdman, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 727 | const GrDrawEffect& drawEffect) { |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame^] | 728 | INHERITED::setData(pdman, drawEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 729 | const FocalInside2PtConicalEffect& data = drawEffect.castEffect<FocalInside2PtConicalEffect>(); |
| 730 | SkScalar focal = data.focal(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 731 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 732 | if (fCachedFocal != focal) { |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame^] | 733 | pdman.set1f(fFocalUni, SkScalarToFloat(focal)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 734 | fCachedFocal = focal; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 735 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 736 | } |
| 737 | |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 738 | void GLFocalInside2PtConicalEffect::GenKey(const GrDrawEffect& drawEffect, |
| 739 | const GrGLCaps&, GrEffectKeyBuilder* b) { |
| 740 | b->add32(GenBaseGradientKey(drawEffect)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 741 | } |
| 742 | |
| 743 | ////////////////////////////////////////////////////////////////////////////// |
| 744 | // Circle Conical Gradients |
| 745 | ////////////////////////////////////////////////////////////////////////////// |
| 746 | |
| 747 | struct CircleConicalInfo { |
| 748 | SkPoint fCenterEnd; |
| 749 | SkScalar fA; |
| 750 | SkScalar fB; |
| 751 | SkScalar fC; |
| 752 | }; |
| 753 | |
| 754 | // Returns focal distance along x-axis in transformed coords |
| 755 | static ConicalType set_matrix_circle_conical(const SkTwoPointConicalGradient& shader, |
| 756 | SkMatrix* invLMatrix, CircleConicalInfo* info) { |
| 757 | // Inverse of the current local matrix is passed in then, |
| 758 | // translate and scale such that start circle is on the origin and has radius 1 |
| 759 | const SkPoint& centerStart = shader.getStartCenter(); |
| 760 | const SkPoint& centerEnd = shader.getEndCenter(); |
| 761 | SkScalar radiusStart = shader.getStartRadius(); |
| 762 | SkScalar radiusEnd = shader.getEndRadius(); |
| 763 | |
| 764 | SkMatrix matrix; |
| 765 | |
| 766 | matrix.setTranslate(-centerStart.fX, -centerStart.fY); |
| 767 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 768 | SkScalar invStartRad = 1.f / radiusStart; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 769 | matrix.postScale(invStartRad, invStartRad); |
| 770 | |
| 771 | radiusEnd /= radiusStart; |
| 772 | |
| 773 | SkPoint centerEndTrans; |
| 774 | matrix.mapPoints(¢erEndTrans, ¢erEnd, 1); |
| 775 | |
| 776 | SkScalar A = centerEndTrans.fX * centerEndTrans.fX + centerEndTrans.fY * centerEndTrans.fY |
| 777 | - radiusEnd * radiusEnd + 2 * radiusEnd - 1; |
| 778 | |
| 779 | // Check to see if start circle is inside end circle with edges touching. |
| 780 | // 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] | 781 | // to the edge shader. kEdgeErrorTol = 5 * kErrorTol was picked after manual testing |
| 782 | // so that C = 1 / A is stable, and the linear approximation used in the Edge shader is |
| 783 | // still accurate. |
| 784 | if (SkScalarAbs(A) < kEdgeErrorTol) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 785 | return kEdge_ConicalType; |
| 786 | } |
| 787 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 788 | SkScalar C = 1.f / A; |
| 789 | SkScalar B = (radiusEnd - 1.f) * C; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 790 | |
| 791 | matrix.postScale(C, C); |
| 792 | |
| 793 | invLMatrix->postConcat(matrix); |
| 794 | |
| 795 | info->fCenterEnd = centerEndTrans; |
| 796 | info->fA = A; |
| 797 | info->fB = B; |
| 798 | info->fC = C; |
| 799 | |
| 800 | // 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] | 801 | if (A < 0.f) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 802 | return kInside_ConicalType; |
| 803 | } |
| 804 | return kOutside_ConicalType; |
| 805 | } |
| 806 | |
| 807 | class GLCircleInside2PtConicalEffect; |
| 808 | |
| 809 | class CircleInside2PtConicalEffect : public GrGradientEffect { |
| 810 | public: |
| 811 | |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 812 | static GrEffect* Create(GrContext* ctx, |
| 813 | const SkTwoPointConicalGradient& shader, |
| 814 | const SkMatrix& matrix, |
| 815 | SkShader::TileMode tm, |
| 816 | const CircleConicalInfo& info) { |
bsalomon | 55fad7a | 2014-07-08 07:34:20 -0700 | [diff] [blame] | 817 | return SkNEW_ARGS(CircleInside2PtConicalEffect, (ctx, shader, matrix, tm, info)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 818 | } |
| 819 | |
| 820 | virtual ~CircleInside2PtConicalEffect() {} |
| 821 | |
| 822 | static const char* Name() { return "Two-Point Conical Gradient Inside"; } |
| 823 | virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE; |
| 824 | |
| 825 | SkScalar centerX() const { return fInfo.fCenterEnd.fX; } |
| 826 | SkScalar centerY() const { return fInfo.fCenterEnd.fY; } |
| 827 | SkScalar A() const { return fInfo.fA; } |
| 828 | SkScalar B() const { return fInfo.fB; } |
| 829 | SkScalar C() const { return fInfo.fC; } |
| 830 | |
| 831 | typedef GLCircleInside2PtConicalEffect GLEffect; |
| 832 | |
| 833 | private: |
| 834 | virtual bool onIsEqual(const GrEffect& sBase) const SK_OVERRIDE { |
| 835 | const CircleInside2PtConicalEffect& s = CastEffect<CircleInside2PtConicalEffect>(sBase); |
| 836 | return (INHERITED::onIsEqual(sBase) && |
| 837 | this->fInfo.fCenterEnd == s.fInfo.fCenterEnd && |
| 838 | this->fInfo.fA == s.fInfo.fA && |
| 839 | this->fInfo.fB == s.fInfo.fB && |
| 840 | this->fInfo.fC == s.fInfo.fC); |
| 841 | } |
| 842 | |
| 843 | CircleInside2PtConicalEffect(GrContext* ctx, |
| 844 | const SkTwoPointConicalGradient& shader, |
| 845 | const SkMatrix& matrix, |
| 846 | SkShader::TileMode tm, |
| 847 | const CircleConicalInfo& info) |
| 848 | : INHERITED(ctx, shader, matrix, tm), fInfo(info) {} |
| 849 | |
| 850 | GR_DECLARE_EFFECT_TEST; |
| 851 | |
| 852 | const CircleConicalInfo fInfo; |
| 853 | |
| 854 | typedef GrGradientEffect INHERITED; |
| 855 | }; |
| 856 | |
| 857 | class GLCircleInside2PtConicalEffect : public GrGLGradientEffect { |
| 858 | public: |
| 859 | GLCircleInside2PtConicalEffect(const GrBackendEffectFactory& factory, const GrDrawEffect&); |
| 860 | virtual ~GLCircleInside2PtConicalEffect() {} |
| 861 | |
| 862 | virtual void emitCode(GrGLShaderBuilder*, |
| 863 | const GrDrawEffect&, |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 864 | const GrEffectKey&, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 865 | const char* outputColor, |
| 866 | const char* inputColor, |
| 867 | const TransformedCoordsArray&, |
| 868 | const TextureSamplerArray&) SK_OVERRIDE; |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame^] | 869 | virtual void setData(const GrGLProgramDataManager&, const GrDrawEffect&) SK_OVERRIDE; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 870 | |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 871 | static void GenKey(const GrDrawEffect&, const GrGLCaps& caps, GrEffectKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 872 | |
| 873 | protected: |
| 874 | UniformHandle fCenterUni; |
| 875 | UniformHandle fParamUni; |
| 876 | |
| 877 | const char* fVSVaryingName; |
| 878 | const char* fFSVaryingName; |
| 879 | |
| 880 | // @{ |
| 881 | /// Values last uploaded as uniforms |
| 882 | |
| 883 | SkScalar fCachedCenterX; |
| 884 | SkScalar fCachedCenterY; |
| 885 | SkScalar fCachedA; |
| 886 | SkScalar fCachedB; |
| 887 | SkScalar fCachedC; |
| 888 | |
| 889 | // @} |
| 890 | |
| 891 | private: |
| 892 | typedef GrGLGradientEffect INHERITED; |
| 893 | |
| 894 | }; |
| 895 | |
| 896 | const GrBackendEffectFactory& CircleInside2PtConicalEffect::getFactory() const { |
| 897 | return GrTBackendEffectFactory<CircleInside2PtConicalEffect>::getInstance(); |
| 898 | } |
| 899 | |
| 900 | GR_DEFINE_EFFECT_TEST(CircleInside2PtConicalEffect); |
| 901 | |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 902 | GrEffect* CircleInside2PtConicalEffect::TestCreate(SkRandom* random, |
| 903 | GrContext* context, |
| 904 | const GrDrawTargetCaps&, |
| 905 | GrTexture**) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 906 | SkPoint center1 = {random->nextUScalar1(), random->nextUScalar1()}; |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 907 | SkScalar radius1 = random->nextUScalar1() + 0.0001f; // make sure radius1 != 0 |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 908 | SkPoint center2; |
| 909 | SkScalar radius2; |
| 910 | do { |
| 911 | center2.set(random->nextUScalar1(), random->nextUScalar1()); |
| 912 | // Below makes sure that circle one is contained within circle two |
| 913 | SkScalar increase = random->nextUScalar1(); |
| 914 | SkPoint diff = center2 - center1; |
| 915 | SkScalar diffLen = diff.length(); |
| 916 | radius2 = radius1 + diffLen + increase; |
| 917 | // If the circles are identical the factory will give us an empty shader. |
| 918 | } while (radius1 == radius2 && center1 == center2); |
| 919 | |
| 920 | SkColor colors[kMaxRandomGradientColors]; |
| 921 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 922 | SkScalar* stops = stopsArray; |
| 923 | SkShader::TileMode tm; |
| 924 | int colorCount = RandomGradientParams(random, colors, &stops, &tm); |
| 925 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 926 | center2, radius2, |
| 927 | colors, stops, colorCount, |
| 928 | tm)); |
| 929 | SkPaint paint; |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 930 | GrColor paintColor; |
| 931 | GrEffect* effect; |
| 932 | SkAssertResult(shader->asNewEffect(context, paint, NULL, &paintColor, &effect)); |
| 933 | return effect; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 934 | } |
| 935 | |
| 936 | GLCircleInside2PtConicalEffect::GLCircleInside2PtConicalEffect(const GrBackendEffectFactory& factory, |
| 937 | const GrDrawEffect& drawEffect) |
| 938 | : INHERITED(factory) |
| 939 | , fVSVaryingName(NULL) |
| 940 | , fFSVaryingName(NULL) |
| 941 | , fCachedCenterX(SK_ScalarMax) |
| 942 | , fCachedCenterY(SK_ScalarMax) |
| 943 | , fCachedA(SK_ScalarMax) |
| 944 | , fCachedB(SK_ScalarMax) |
| 945 | , fCachedC(SK_ScalarMax) {} |
| 946 | |
| 947 | void GLCircleInside2PtConicalEffect::emitCode(GrGLShaderBuilder* builder, |
| 948 | const GrDrawEffect&, |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 949 | const GrEffectKey& key, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 950 | const char* outputColor, |
| 951 | const char* inputColor, |
| 952 | const TransformedCoordsArray& coords, |
| 953 | const TextureSamplerArray& samplers) { |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 954 | uint32_t baseKey = key.get32(0); |
| 955 | this->emitUniforms(builder, baseKey); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 956 | fCenterUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility, |
| 957 | kVec2f_GrSLType, "Conical2FSCenter"); |
| 958 | fParamUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility, |
| 959 | kVec3f_GrSLType, "Conical2FSParams"); |
| 960 | SkString tName("t"); |
| 961 | |
| 962 | GrGLShaderVar center = builder->getUniformVariable(fCenterUni); |
| 963 | // params.x = A |
| 964 | // params.y = B |
| 965 | // params.z = C |
| 966 | GrGLShaderVar params = builder->getUniformVariable(fParamUni); |
| 967 | |
| 968 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 969 | SkString coords2DString = builder->ensureFSCoords2D(coords, 0); |
| 970 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 971 | |
| 972 | // p = coords2D |
| 973 | // e = center end |
| 974 | // r = radius end |
| 975 | // A = dot(e, e) - r^2 + 2 * r - 1 |
| 976 | // B = (r -1) / A |
| 977 | // C = 1 / A |
| 978 | // d = dot(e, p) + B |
| 979 | // t = d +/- sqrt(d^2 - A * dot(p, p) + C) |
| 980 | builder->fsCodeAppendf("\tfloat pDotp = dot(%s, %s);\n", coords2D, coords2D); |
| 981 | builder->fsCodeAppendf("\tfloat d = dot(%s, %s) + %s.y;\n", coords2D, center.c_str(), params.c_str()); |
| 982 | builder->fsCodeAppendf("\tfloat %s = d + sqrt(d * d - %s.x * pDotp + %s.z);\n", |
| 983 | tName.c_str(), params.c_str(), params.c_str()); |
| 984 | |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 985 | this->emitColor(builder, tName.c_str(), baseKey, outputColor, inputColor, samplers); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 986 | } |
| 987 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame^] | 988 | void GLCircleInside2PtConicalEffect::setData(const GrGLProgramDataManager& pdman, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 989 | const GrDrawEffect& drawEffect) { |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame^] | 990 | INHERITED::setData(pdman, drawEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 991 | const CircleInside2PtConicalEffect& data = drawEffect.castEffect<CircleInside2PtConicalEffect>(); |
| 992 | SkScalar centerX = data.centerX(); |
| 993 | SkScalar centerY = data.centerY(); |
| 994 | SkScalar A = data.A(); |
| 995 | SkScalar B = data.B(); |
| 996 | SkScalar C = data.C(); |
| 997 | |
| 998 | if (fCachedCenterX != centerX || fCachedCenterY != centerY || |
| 999 | fCachedA != A || fCachedB != B || fCachedC != C) { |
| 1000 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame^] | 1001 | pdman.set2f(fCenterUni, SkScalarToFloat(centerX), SkScalarToFloat(centerY)); |
| 1002 | pdman.set3f(fParamUni, SkScalarToFloat(A), SkScalarToFloat(B), SkScalarToFloat(C)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1003 | |
| 1004 | fCachedCenterX = centerX; |
| 1005 | fCachedCenterY = centerY; |
| 1006 | fCachedA = A; |
| 1007 | fCachedB = B; |
| 1008 | fCachedC = C; |
| 1009 | } |
| 1010 | } |
| 1011 | |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 1012 | void GLCircleInside2PtConicalEffect::GenKey(const GrDrawEffect& drawEffect, |
| 1013 | const GrGLCaps&, GrEffectKeyBuilder* b) { |
| 1014 | b->add32(GenBaseGradientKey(drawEffect)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1015 | } |
| 1016 | |
| 1017 | ////////////////////////////////////////////////////////////////////////////// |
| 1018 | |
| 1019 | class GLCircleOutside2PtConicalEffect; |
| 1020 | |
| 1021 | class CircleOutside2PtConicalEffect : public GrGradientEffect { |
| 1022 | public: |
| 1023 | |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 1024 | static GrEffect* Create(GrContext* ctx, |
| 1025 | const SkTwoPointConicalGradient& shader, |
| 1026 | const SkMatrix& matrix, |
| 1027 | SkShader::TileMode tm, |
| 1028 | const CircleConicalInfo& info) { |
bsalomon | 55fad7a | 2014-07-08 07:34:20 -0700 | [diff] [blame] | 1029 | return SkNEW_ARGS(CircleOutside2PtConicalEffect, (ctx, shader, matrix, tm, info)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1030 | } |
| 1031 | |
| 1032 | virtual ~CircleOutside2PtConicalEffect() {} |
| 1033 | |
| 1034 | static const char* Name() { return "Two-Point Conical Gradient Outside"; } |
| 1035 | virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE; |
| 1036 | |
| 1037 | SkScalar centerX() const { return fInfo.fCenterEnd.fX; } |
| 1038 | SkScalar centerY() const { return fInfo.fCenterEnd.fY; } |
| 1039 | SkScalar A() const { return fInfo.fA; } |
| 1040 | SkScalar B() const { return fInfo.fB; } |
| 1041 | SkScalar C() const { return fInfo.fC; } |
| 1042 | SkScalar tLimit() const { return fTLimit; } |
| 1043 | bool isFlipped() const { return fIsFlipped; } |
| 1044 | |
| 1045 | typedef GLCircleOutside2PtConicalEffect GLEffect; |
| 1046 | |
| 1047 | private: |
| 1048 | virtual bool onIsEqual(const GrEffect& sBase) const SK_OVERRIDE { |
| 1049 | const CircleOutside2PtConicalEffect& s = CastEffect<CircleOutside2PtConicalEffect>(sBase); |
| 1050 | return (INHERITED::onIsEqual(sBase) && |
| 1051 | this->fInfo.fCenterEnd == s.fInfo.fCenterEnd && |
| 1052 | this->fInfo.fA == s.fInfo.fA && |
| 1053 | this->fInfo.fB == s.fInfo.fB && |
| 1054 | this->fInfo.fC == s.fInfo.fC && |
| 1055 | this->fTLimit == s.fTLimit && |
| 1056 | this->fIsFlipped == s.fIsFlipped); |
| 1057 | } |
| 1058 | |
| 1059 | CircleOutside2PtConicalEffect(GrContext* ctx, |
| 1060 | const SkTwoPointConicalGradient& shader, |
| 1061 | const SkMatrix& matrix, |
| 1062 | SkShader::TileMode tm, |
| 1063 | const CircleConicalInfo& info) |
| 1064 | : INHERITED(ctx, shader, matrix, tm), fInfo(info) { |
| 1065 | if (shader.getStartRadius() != shader.getEndRadius()) { |
| 1066 | fTLimit = SkScalarDiv(shader.getStartRadius(), (shader.getStartRadius() - shader.getEndRadius())); |
| 1067 | } else { |
| 1068 | fTLimit = SK_ScalarMin; |
| 1069 | } |
| 1070 | |
| 1071 | fIsFlipped = shader.isFlippedGrad(); |
| 1072 | } |
| 1073 | |
| 1074 | GR_DECLARE_EFFECT_TEST; |
| 1075 | |
| 1076 | const CircleConicalInfo fInfo; |
| 1077 | SkScalar fTLimit; |
| 1078 | bool fIsFlipped; |
| 1079 | |
| 1080 | typedef GrGradientEffect INHERITED; |
| 1081 | }; |
| 1082 | |
| 1083 | class GLCircleOutside2PtConicalEffect : public GrGLGradientEffect { |
| 1084 | public: |
| 1085 | GLCircleOutside2PtConicalEffect(const GrBackendEffectFactory& factory, const GrDrawEffect&); |
| 1086 | virtual ~GLCircleOutside2PtConicalEffect() {} |
| 1087 | |
| 1088 | virtual void emitCode(GrGLShaderBuilder*, |
| 1089 | const GrDrawEffect&, |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 1090 | const GrEffectKey&, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1091 | const char* outputColor, |
| 1092 | const char* inputColor, |
| 1093 | const TransformedCoordsArray&, |
| 1094 | const TextureSamplerArray&) SK_OVERRIDE; |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame^] | 1095 | virtual void setData(const GrGLProgramDataManager&, const GrDrawEffect&) SK_OVERRIDE; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1096 | |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 1097 | static void GenKey(const GrDrawEffect&, const GrGLCaps& caps, GrEffectKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1098 | |
| 1099 | protected: |
| 1100 | UniformHandle fCenterUni; |
| 1101 | UniformHandle fParamUni; |
| 1102 | |
| 1103 | const char* fVSVaryingName; |
| 1104 | const char* fFSVaryingName; |
| 1105 | |
| 1106 | bool fIsFlipped; |
| 1107 | |
| 1108 | // @{ |
| 1109 | /// Values last uploaded as uniforms |
| 1110 | |
| 1111 | SkScalar fCachedCenterX; |
| 1112 | SkScalar fCachedCenterY; |
| 1113 | SkScalar fCachedA; |
| 1114 | SkScalar fCachedB; |
| 1115 | SkScalar fCachedC; |
| 1116 | SkScalar fCachedTLimit; |
| 1117 | |
| 1118 | // @} |
| 1119 | |
| 1120 | private: |
| 1121 | typedef GrGLGradientEffect INHERITED; |
| 1122 | |
| 1123 | }; |
| 1124 | |
| 1125 | const GrBackendEffectFactory& CircleOutside2PtConicalEffect::getFactory() const { |
| 1126 | return GrTBackendEffectFactory<CircleOutside2PtConicalEffect>::getInstance(); |
| 1127 | } |
| 1128 | |
| 1129 | GR_DEFINE_EFFECT_TEST(CircleOutside2PtConicalEffect); |
| 1130 | |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 1131 | GrEffect* CircleOutside2PtConicalEffect::TestCreate(SkRandom* random, |
| 1132 | GrContext* context, |
| 1133 | const GrDrawTargetCaps&, |
| 1134 | GrTexture**) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1135 | SkPoint center1 = {random->nextUScalar1(), random->nextUScalar1()}; |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 1136 | SkScalar radius1 = random->nextUScalar1() + 0.0001f; // make sure radius1 != 0 |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1137 | SkPoint center2; |
| 1138 | SkScalar radius2; |
| 1139 | SkScalar diffLen; |
| 1140 | do { |
| 1141 | center2.set(random->nextUScalar1(), random->nextUScalar1()); |
| 1142 | // If the circles share a center than we can't be in the outside case |
| 1143 | } while (center1 == center2); |
| 1144 | SkPoint diff = center2 - center1; |
| 1145 | diffLen = diff.length(); |
| 1146 | // Below makes sure that circle one is not contained within circle two |
| 1147 | // and have radius2 >= radius to match sorting on cpu side |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 1148 | radius2 = radius1 + random->nextRangeF(0.f, diffLen); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1149 | |
| 1150 | SkColor colors[kMaxRandomGradientColors]; |
| 1151 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 1152 | SkScalar* stops = stopsArray; |
| 1153 | SkShader::TileMode tm; |
| 1154 | int colorCount = RandomGradientParams(random, colors, &stops, &tm); |
| 1155 | SkAutoTUnref<SkShader> shader(SkGradientShader::CreateTwoPointConical(center1, radius1, |
| 1156 | center2, radius2, |
| 1157 | colors, stops, colorCount, |
| 1158 | tm)); |
| 1159 | SkPaint paint; |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 1160 | GrColor paintColor; |
| 1161 | GrEffect* effect; |
| 1162 | SkAssertResult(shader->asNewEffect(context, paint, NULL, &paintColor, &effect)); |
| 1163 | return effect; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1164 | } |
| 1165 | |
| 1166 | GLCircleOutside2PtConicalEffect::GLCircleOutside2PtConicalEffect(const GrBackendEffectFactory& factory, |
| 1167 | const GrDrawEffect& drawEffect) |
| 1168 | : INHERITED(factory) |
| 1169 | , fVSVaryingName(NULL) |
| 1170 | , fFSVaryingName(NULL) |
| 1171 | , fCachedCenterX(SK_ScalarMax) |
| 1172 | , fCachedCenterY(SK_ScalarMax) |
| 1173 | , fCachedA(SK_ScalarMax) |
| 1174 | , fCachedB(SK_ScalarMax) |
| 1175 | , fCachedC(SK_ScalarMax) |
| 1176 | , fCachedTLimit(SK_ScalarMax) { |
| 1177 | const CircleOutside2PtConicalEffect& data = drawEffect.castEffect<CircleOutside2PtConicalEffect>(); |
| 1178 | fIsFlipped = data.isFlipped(); |
| 1179 | } |
| 1180 | |
| 1181 | void GLCircleOutside2PtConicalEffect::emitCode(GrGLShaderBuilder* builder, |
| 1182 | const GrDrawEffect&, |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 1183 | const GrEffectKey& key, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1184 | const char* outputColor, |
| 1185 | const char* inputColor, |
| 1186 | const TransformedCoordsArray& coords, |
| 1187 | const TextureSamplerArray& samplers) { |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 1188 | uint32_t baseKey = key.get32(0); |
| 1189 | this->emitUniforms(builder, baseKey); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1190 | fCenterUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility, |
| 1191 | kVec2f_GrSLType, "Conical2FSCenter"); |
| 1192 | fParamUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility, |
| 1193 | kVec4f_GrSLType, "Conical2FSParams"); |
| 1194 | SkString tName("t"); |
| 1195 | |
| 1196 | GrGLShaderVar center = builder->getUniformVariable(fCenterUni); |
| 1197 | // params.x = A |
| 1198 | // params.y = B |
| 1199 | // params.z = C |
| 1200 | GrGLShaderVar params = builder->getUniformVariable(fParamUni); |
| 1201 | |
| 1202 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 1203 | SkString coords2DString = builder->ensureFSCoords2D(coords, 0); |
| 1204 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1205 | |
| 1206 | // output will default to transparent black (we simply won't write anything |
| 1207 | // else to it if invalid, instead of discarding or returning prematurely) |
| 1208 | builder->fsCodeAppendf("\t%s = vec4(0.0,0.0,0.0,0.0);\n", outputColor); |
| 1209 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1210 | // p = coords2D |
| 1211 | // e = center end |
| 1212 | // r = radius end |
| 1213 | // A = dot(e, e) - r^2 + 2 * r - 1 |
| 1214 | // B = (r -1) / A |
| 1215 | // C = 1 / A |
| 1216 | // d = dot(e, p) + B |
| 1217 | // t = d +/- sqrt(d^2 - A * dot(p, p) + C) |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1218 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1219 | builder->fsCodeAppendf("\tfloat pDotp = dot(%s, %s);\n", coords2D, coords2D); |
| 1220 | builder->fsCodeAppendf("\tfloat d = dot(%s, %s) + %s.y;\n", coords2D, center.c_str(), params.c_str()); |
| 1221 | builder->fsCodeAppendf("\tfloat deter = d * d - %s.x * pDotp + %s.z;\n", params.c_str(), params.c_str()); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1222 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1223 | // Must check to see if we flipped the circle order (to make sure start radius < end radius) |
| 1224 | // If so we must also flip sign on sqrt |
| 1225 | if (!fIsFlipped) { |
| 1226 | builder->fsCodeAppendf("\tfloat %s = d + sqrt(deter);\n", tName.c_str()); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1227 | } else { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1228 | builder->fsCodeAppendf("\tfloat %s = d - sqrt(deter);\n", tName.c_str()); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1229 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1230 | |
| 1231 | builder->fsCodeAppendf("\tif (%s >= %s.w && deter >= 0.0) {\n", tName.c_str(), params.c_str()); |
| 1232 | builder->fsCodeAppend("\t\t"); |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 1233 | this->emitColor(builder, tName.c_str(), baseKey, outputColor, inputColor, samplers); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1234 | builder->fsCodeAppend("\t}\n"); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1235 | } |
| 1236 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame^] | 1237 | void GLCircleOutside2PtConicalEffect::setData(const GrGLProgramDataManager& pdman, |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1238 | const GrDrawEffect& drawEffect) { |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame^] | 1239 | INHERITED::setData(pdman, drawEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1240 | const CircleOutside2PtConicalEffect& data = drawEffect.castEffect<CircleOutside2PtConicalEffect>(); |
commit-bot@chromium.org | 44d83c1 | 2014-04-21 13:10:25 +0000 | [diff] [blame] | 1241 | SkASSERT(data.isFlipped() == fIsFlipped); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1242 | SkScalar centerX = data.centerX(); |
| 1243 | SkScalar centerY = data.centerY(); |
| 1244 | SkScalar A = data.A(); |
| 1245 | SkScalar B = data.B(); |
| 1246 | SkScalar C = data.C(); |
| 1247 | SkScalar tLimit = data.tLimit(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1248 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1249 | if (fCachedCenterX != centerX || fCachedCenterY != centerY || |
| 1250 | fCachedA != A || fCachedB != B || fCachedC != C || fCachedTLimit != tLimit) { |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1251 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame^] | 1252 | pdman.set2f(fCenterUni, SkScalarToFloat(centerX), SkScalarToFloat(centerY)); |
| 1253 | pdman.set4f(fParamUni, SkScalarToFloat(A), SkScalarToFloat(B), SkScalarToFloat(C), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1254 | SkScalarToFloat(tLimit)); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1255 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1256 | fCachedCenterX = centerX; |
| 1257 | fCachedCenterY = centerY; |
| 1258 | fCachedA = A; |
| 1259 | fCachedB = B; |
| 1260 | fCachedC = C; |
| 1261 | fCachedTLimit = tLimit; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1262 | } |
| 1263 | } |
| 1264 | |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 1265 | void GLCircleOutside2PtConicalEffect::GenKey(const GrDrawEffect& drawEffect, |
| 1266 | const GrGLCaps&, GrEffectKeyBuilder* b) { |
| 1267 | uint32_t* key = b->add32n(2); |
| 1268 | key[0] = GenBaseGradientKey(drawEffect); |
| 1269 | key[1] = drawEffect.castEffect<CircleOutside2PtConicalEffect>().isFlipped(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1270 | } |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1271 | |
| 1272 | ////////////////////////////////////////////////////////////////////////////// |
| 1273 | |
bsalomon | 83d081a | 2014-07-08 09:56:10 -0700 | [diff] [blame] | 1274 | GrEffect* Gr2PtConicalGradientEffect::Create(GrContext* ctx, |
| 1275 | const SkTwoPointConicalGradient& shader, |
| 1276 | SkShader::TileMode tm, |
| 1277 | const SkMatrix* localMatrix) { |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1278 | SkMatrix matrix; |
| 1279 | if (!shader.getLocalMatrix().invert(&matrix)) { |
| 1280 | return NULL; |
| 1281 | } |
commit-bot@chromium.org | 96fb748 | 2014-05-09 20:28:11 +0000 | [diff] [blame] | 1282 | if (localMatrix) { |
| 1283 | SkMatrix inv; |
| 1284 | if (!localMatrix->invert(&inv)) { |
| 1285 | return NULL; |
| 1286 | } |
| 1287 | matrix.postConcat(inv); |
| 1288 | } |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1289 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1290 | if (shader.getStartRadius() < kErrorTol) { |
| 1291 | SkScalar focalX; |
| 1292 | ConicalType type = set_matrix_focal_conical(shader, &matrix, &focalX); |
| 1293 | if (type == kInside_ConicalType) { |
| 1294 | return FocalInside2PtConicalEffect::Create(ctx, shader, matrix, tm, focalX); |
| 1295 | } else if(type == kEdge_ConicalType) { |
| 1296 | set_matrix_edge_conical(shader, &matrix); |
| 1297 | return Edge2PtConicalEffect::Create(ctx, shader, matrix, tm); |
| 1298 | } else { |
| 1299 | return FocalOutside2PtConicalEffect::Create(ctx, shader, matrix, tm, focalX); |
| 1300 | } |
| 1301 | } |
| 1302 | |
| 1303 | CircleConicalInfo info; |
| 1304 | ConicalType type = set_matrix_circle_conical(shader, &matrix, &info); |
| 1305 | |
| 1306 | if (type == kInside_ConicalType) { |
| 1307 | return CircleInside2PtConicalEffect::Create(ctx, shader, matrix, tm, info); |
| 1308 | } else if (type == kEdge_ConicalType) { |
| 1309 | set_matrix_edge_conical(shader, &matrix); |
| 1310 | return Edge2PtConicalEffect::Create(ctx, shader, matrix, tm); |
| 1311 | } else { |
| 1312 | return CircleOutside2PtConicalEffect::Create(ctx, shader, matrix, tm, info); |
| 1313 | } |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1314 | } |
| 1315 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1316 | #endif |