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| 1 /* |
| 2 * Copyright 2013 Google Inc. |
| 3 * |
| 4 * Use of this source code is governed by a BSD-style license that can be |
| 5 * found in the LICENSE file. |
| 6 */ |
| 7 |
| 8 #include "GrBezierEffect.h" |
| 9 |
| 10 #include "gl/GrGLEffect.h" |
| 11 #include "gl/GrGLSL.h" |
| 12 #include "GrTBackendEffectFactory.h" |
| 13 |
| 14 class GrGLConicEffect : public GrGLEffect { |
| 15 public: |
| 16 GrGLConicEffect(const GrBackendEffectFactory&, const GrDrawEffect&); |
| 17 |
| 18 virtual void emitCode(GrGLShaderBuilder* builder, |
| 19 const GrDrawEffect& drawEffect, |
| 20 EffectKey key, |
| 21 const char* outputColor, |
| 22 const char* inputColor, |
| 23 const TextureSamplerArray&) SK_OVERRIDE; |
| 24 |
| 25 static inline EffectKey GenKey(const GrDrawEffect&, const GrGLCaps&); |
| 26 |
| 27 virtual void setData(const GrGLUniformManager&, const GrDrawEffect&) SK_OVER
RIDE {} |
| 28 |
| 29 private: |
| 30 GrBezierEdgeType fEdgeType; |
| 31 |
| 32 typedef GrGLEffect INHERITED; |
| 33 }; |
| 34 |
| 35 GrGLConicEffect::GrGLConicEffect(const GrBackendEffectFactory& factory, |
| 36 const GrDrawEffect& drawEffect) |
| 37 : INHERITED (factory) { |
| 38 const GrConicEffect& ce = drawEffect.castEffect<GrConicEffect>(); |
| 39 fEdgeType = ce.getEdgeType(); |
| 40 } |
| 41 |
| 42 void GrGLConicEffect::emitCode(GrGLShaderBuilder* builder, |
| 43 const GrDrawEffect& drawEffect, |
| 44 EffectKey key, |
| 45 const char* outputColor, |
| 46 const char* inputColor, |
| 47 const TextureSamplerArray& samplers) { |
| 48 const char *vsName, *fsName; |
| 49 |
| 50 builder->addVarying(kVec4f_GrSLType, "ConicCoeffs", |
| 51 &vsName, &fsName); |
| 52 const SkString* attr0Name = |
| 53 builder->getEffectAttributeName(drawEffect.getVertexAttribIndices()[0]); |
| 54 builder->vsCodeAppendf("\t%s = %s;\n", vsName, attr0Name->c_str()); |
| 55 |
| 56 builder->fsCodeAppend("\t\tfloat edgeAlpha;\n"); |
| 57 |
| 58 switch (fEdgeType) { |
| 59 case kHairAA_GrBezierEdgeType: { |
| 60 SkAssertResult(builder->enableFeature( |
| 61 GrGLShaderBuilder::kStandardDerivatives_GLSLFeature)); |
| 62 builder->fsCodeAppendf("\t\tvec3 dklmdx = dFdx(%s.xyz);\n", fsName); |
| 63 builder->fsCodeAppendf("\t\tvec3 dklmdy = dFdy(%s.xyz);\n", fsName); |
| 64 builder->fsCodeAppendf("\t\tfloat dfdx =\n" |
| 65 "\t\t\t2.0*%s.x*dklmdx.x - %s.y*dklmdx.z - %s
.z*dklmdx.y;\n", |
| 66 fsName, fsName, fsName); |
| 67 builder->fsCodeAppendf("\t\tfloat dfdy =\n" |
| 68 "\t\t\t2.0*%s.x*dklmdy.x - %s.y*dklmdy.z - %s
.z*dklmdy.y;\n", |
| 69 fsName, fsName, fsName); |
| 70 builder->fsCodeAppend("\t\tvec2 gF = vec2(dfdx, dfdy);\n"); |
| 71 builder->fsCodeAppend("\t\tfloat gFM = sqrt(dot(gF, gF));\n"); |
| 72 builder->fsCodeAppendf("\t\tfloat func = %s.x*%s.x - %s.y*%s.z;\n",
fsName, fsName, |
| 73 fsName, fsName); |
| 74 builder->fsCodeAppend("\t\tfunc = abs(func);\n"); |
| 75 builder->fsCodeAppend("\t\tedgeAlpha = func / gFM;\n"); |
| 76 builder->fsCodeAppend("\t\tedgeAlpha = max(1.0 - edgeAlpha, 0.0);\n"
); |
| 77 // Add line below for smooth cubic ramp |
| 78 // builder->fsCodeAppend("\t\tedgeAlpha = edgeAlpha*edgeAlpha*(3.0-2
.0*edgeAlpha);\n"); |
| 79 break; |
| 80 } |
| 81 case kFillAA_GrBezierEdgeType: { |
| 82 SkAssertResult(builder->enableFeature( |
| 83 GrGLShaderBuilder::kStandardDerivatives_GLSLFeature)); |
| 84 builder->fsCodeAppendf("\t\tvec3 dklmdx = dFdx(%s.xyz);\n", fsName); |
| 85 builder->fsCodeAppendf("\t\tvec3 dklmdy = dFdy(%s.xyz);\n", fsName); |
| 86 builder->fsCodeAppendf("\t\tfloat dfdx =\n" |
| 87 "\t\t\t2.0*%s.x*dklmdx.x - %s.y*dklmdx.z - %s
.z*dklmdx.y;\n", |
| 88 fsName, fsName, fsName); |
| 89 builder->fsCodeAppendf("\t\tfloat dfdy =\n" |
| 90 "\t\t\t2.0*%s.x*dklmdy.x - %s.y*dklmdy.z - %s
.z*dklmdy.y;\n", |
| 91 fsName, fsName, fsName); |
| 92 builder->fsCodeAppend("\t\tvec2 gF = vec2(dfdx, dfdy);\n"); |
| 93 builder->fsCodeAppend("\t\tfloat gFM = sqrt(dot(gF, gF));\n"); |
| 94 builder->fsCodeAppendf("\t\tfloat func = %s.x*%s.x - %s.y*%s.z;\n",
fsName, fsName, |
| 95 fsName, fsName); |
| 96 builder->fsCodeAppend("\t\tedgeAlpha = func / gFM;\n"); |
| 97 builder->fsCodeAppend("\t\tedgeAlpha = clamp(1.0 - edgeAlpha, 0.0, 1
.0);\n"); |
| 98 // Add line below for smooth cubic ramp |
| 99 // builder->fsCodeAppend("\t\tedgeAlpha = edgeAlpha*edgeAlpha*(3.0-2
.0*edgeAlpha);\n"); |
| 100 break; |
| 101 } |
| 102 case kFillNoAA_GrBezierEdgeType: { |
| 103 builder->fsCodeAppendf("\t\tedgeAlpha = %s.x*%s.x - %s.y*%s.z;\n", f
sName, fsName, |
| 104 fsName, fsName); |
| 105 builder->fsCodeAppend("\t\tedgeAlpha = float(edgeAlpha < 0.0);\n"); |
| 106 break; |
| 107 } |
| 108 } |
| 109 |
| 110 SkString modulate; |
| 111 GrGLSLModulatef<4>(&modulate, inputColor, "edgeAlpha"); |
| 112 builder->fsCodeAppendf("\t%s = %s;\n", outputColor, modulate.c_str()); |
| 113 } |
| 114 |
| 115 GrGLEffect::EffectKey GrGLConicEffect::GenKey(const GrDrawEffect& drawEffect, co
nst GrGLCaps&) { |
| 116 const GrConicEffect& ce = drawEffect.castEffect<GrConicEffect>(); |
| 117 return ce.isAntiAliased() ? (ce.isFilled() ? 0x0 : 0x1) : 0x2; |
| 118 } |
| 119 |
| 120 ////////////////////////////////////////////////////////////////////////////// |
| 121 |
| 122 GrConicEffect::~GrConicEffect() {} |
| 123 |
| 124 const GrBackendEffectFactory& GrConicEffect::getFactory() const { |
| 125 return GrTBackendEffectFactory<GrConicEffect>::getInstance(); |
| 126 } |
| 127 |
| 128 GrConicEffect::GrConicEffect(GrBezierEdgeType edgeType) : GrEffect() { |
| 129 this->addVertexAttrib(kVec4f_GrSLType); |
| 130 fEdgeType = edgeType; |
| 131 } |
| 132 |
| 133 bool GrConicEffect::onIsEqual(const GrEffect& other) const { |
| 134 const GrConicEffect& ce = CastEffect<GrConicEffect>(other); |
| 135 return (ce.fEdgeType == fEdgeType); |
| 136 } |
| 137 |
| 138 ////////////////////////////////////////////////////////////////////////////// |
| 139 |
| 140 GR_DEFINE_EFFECT_TEST(GrConicEffect); |
| 141 |
| 142 GrEffectRef* GrConicEffect::TestCreate(SkMWCRandom* random, |
| 143 GrContext*, |
| 144 const GrDrawTargetCaps& caps, |
| 145 GrTexture*[]) { |
| 146 const GrBezierEdgeType edgeType = static_cast<GrBezierEdgeType>(random->next
ULessThan(3)); |
| 147 return GrConicEffect::Create(edgeType, caps); |
| 148 } |
| 149 |
| 150 ////////////////////////////////////////////////////////////////////////////// |
| 151 // Quad |
| 152 ////////////////////////////////////////////////////////////////////////////// |
| 153 |
| 154 class GrGLQuadEffect : public GrGLEffect { |
| 155 public: |
| 156 GrGLQuadEffect(const GrBackendEffectFactory&, const GrDrawEffect&); |
| 157 |
| 158 virtual void emitCode(GrGLShaderBuilder* builder, |
| 159 const GrDrawEffect& drawEffect, |
| 160 EffectKey key, |
| 161 const char* outputColor, |
| 162 const char* inputColor, |
| 163 const TextureSamplerArray&) SK_OVERRIDE; |
| 164 |
| 165 static inline EffectKey GenKey(const GrDrawEffect&, const GrGLCaps&); |
| 166 |
| 167 virtual void setData(const GrGLUniformManager&, const GrDrawEffect&) SK_OVER
RIDE {} |
| 168 |
| 169 private: |
| 170 GrBezierEdgeType fEdgeType; |
| 171 |
| 172 typedef GrGLEffect INHERITED; |
| 173 }; |
| 174 |
| 175 GrGLQuadEffect::GrGLQuadEffect(const GrBackendEffectFactory& factory, |
| 176 const GrDrawEffect& drawEffect) |
| 177 : INHERITED (factory) { |
| 178 const GrQuadEffect& ce = drawEffect.castEffect<GrQuadEffect>(); |
| 179 fEdgeType = ce.getEdgeType(); |
| 180 } |
| 181 |
| 182 void GrGLQuadEffect::emitCode(GrGLShaderBuilder* builder, |
| 183 const GrDrawEffect& drawEffect, |
| 184 EffectKey key, |
| 185 const char* outputColor, |
| 186 const char* inputColor, |
| 187 const TextureSamplerArray& samplers) { |
| 188 const char *vsName, *fsName; |
| 189 |
| 190 const SkString* attrName = |
| 191 builder->getEffectAttributeName(drawEffect.getVertexAttribIndices()[0]); |
| 192 builder->fsCodeAppendf("\t\tfloat edgeAlpha;\n"); |
| 193 |
| 194 builder->addVarying(kVec4f_GrSLType, "HairQuadEdge", &vsName, &fsName); |
| 195 |
| 196 switch (fEdgeType) { |
| 197 case kHairAA_GrBezierEdgeType: { |
| 198 SkAssertResult(builder->enableFeature( |
| 199 GrGLShaderBuilder::kStandardDerivatives_GLSLFeature)); |
| 200 builder->fsCodeAppendf("\t\tvec2 duvdx = dFdx(%s.xy);\n", fsName); |
| 201 builder->fsCodeAppendf("\t\tvec2 duvdy = dFdy(%s.xy);\n", fsName); |
| 202 builder->fsCodeAppendf("\t\tvec2 gF = vec2(2.0*%s.x*duvdx.x - duvdx.
y,\n" |
| 203 "\t\t 2.0*%s.x*duvdy.x - duvdy.
y);\n", |
| 204 fsName, fsName); |
| 205 builder->fsCodeAppendf("\t\tedgeAlpha = (%s.x*%s.x - %s.y);\n", fsNa
me, fsName, |
| 206 fsName); |
| 207 builder->fsCodeAppend("\t\tedgeAlpha = sqrt(edgeAlpha*edgeAlpha / do
t(gF, gF));\n"); |
| 208 builder->fsCodeAppend("\t\tedgeAlpha = max(1.0 - edgeAlpha, 0.0);\n"
); |
| 209 // Add line below for smooth cubic ramp |
| 210 // builder->fsCodeAppend("\t\tedgeAlpha = edgeAlpha*edgeAlpha*(3.0-2
.0*edgeAlpha);\n"); |
| 211 break; |
| 212 } |
| 213 case kFillAA_GrBezierEdgeType: { |
| 214 SkAssertResult(builder->enableFeature( |
| 215 GrGLShaderBuilder::kStandardDerivatives_GLSLFeature)); |
| 216 builder->fsCodeAppendf("\t\tvec2 duvdx = dFdx(%s.xy);\n", fsName); |
| 217 builder->fsCodeAppendf("\t\tvec2 duvdy = dFdy(%s.xy);\n", fsName); |
| 218 builder->fsCodeAppendf("\t\tvec2 gF = vec2(2.0*%s.x*duvdx.x - duvdx.
y,\n" |
| 219 "\t\t 2.0*%s.x*duvdy.x - duvdy.
y);\n", |
| 220 fsName, fsName); |
| 221 builder->fsCodeAppendf("\t\tedgeAlpha = (%s.x*%s.x - %s.y);\n", fsNa
me, fsName, |
| 222 fsName); |
| 223 builder->fsCodeAppend("\t\tedgeAlpha = edgeAlpha / sqrt(dot(gF, gF))
;\n"); |
| 224 builder->fsCodeAppend("\t\tedgeAlpha = clamp(1.0 - edgeAlpha, 0.0, 1
.0);\n"); |
| 225 // Add line below for smooth cubic ramp |
| 226 // builder->fsCodeAppend("\t\tedgeAlpha = edgeAlpha*edgeAlpha*(3.0-2
.0*edgeAlpha);\n"); |
| 227 break; |
| 228 } |
| 229 case kFillNoAA_GrBezierEdgeType: { |
| 230 builder->fsCodeAppendf("\t\tedgeAlpha = (%s.x*%s.x - %s.y);\n", fsNa
me, fsName, |
| 231 fsName); |
| 232 builder->fsCodeAppend("\t\tedgeAlpha = float(edgeAlpha < 0.0);\n"); |
| 233 break; |
| 234 } |
| 235 } |
| 236 |
| 237 SkString modulate; |
| 238 GrGLSLModulatef<4>(&modulate, inputColor, "edgeAlpha"); |
| 239 builder->fsCodeAppendf("\t%s = %s;\n", outputColor, modulate.c_str()); |
| 240 |
| 241 builder->vsCodeAppendf("\t%s = %s;\n", vsName, attrName->c_str()); |
| 242 } |
| 243 |
| 244 GrGLEffect::EffectKey GrGLQuadEffect::GenKey(const GrDrawEffect& drawEffect, con
st GrGLCaps&) { |
| 245 const GrQuadEffect& ce = drawEffect.castEffect<GrQuadEffect>(); |
| 246 return ce.isAntiAliased() ? (ce.isFilled() ? 0x0 : 0x1) : 0x2; |
| 247 } |
| 248 |
| 249 ////////////////////////////////////////////////////////////////////////////// |
| 250 |
| 251 GrQuadEffect::~GrQuadEffect() {} |
| 252 |
| 253 const GrBackendEffectFactory& GrQuadEffect::getFactory() const { |
| 254 return GrTBackendEffectFactory<GrQuadEffect>::getInstance(); |
| 255 } |
| 256 |
| 257 GrQuadEffect::GrQuadEffect(GrBezierEdgeType edgeType) : GrEffect() { |
| 258 this->addVertexAttrib(kVec4f_GrSLType); |
| 259 fEdgeType = edgeType; |
| 260 } |
| 261 |
| 262 bool GrQuadEffect::onIsEqual(const GrEffect& other) const { |
| 263 const GrQuadEffect& ce = CastEffect<GrQuadEffect>(other); |
| 264 return (ce.fEdgeType == fEdgeType); |
| 265 } |
| 266 |
| 267 ////////////////////////////////////////////////////////////////////////////// |
| 268 |
| 269 GR_DEFINE_EFFECT_TEST(GrQuadEffect); |
| 270 |
| 271 GrEffectRef* GrQuadEffect::TestCreate(SkMWCRandom* random, |
| 272 GrContext*, |
| 273 const GrDrawTargetCaps& caps, |
| 274 GrTexture*[]) { |
| 275 const GrBezierEdgeType edgeType = static_cast<GrBezierEdgeType>(random->next
ULessThan(3)); |
| 276 return GrQuadEffect::Create(edgeType, caps); |
| 277 } |
| 278 |
| 279 ////////////////////////////////////////////////////////////////////////////// |
| 280 // Cubic |
| 281 ////////////////////////////////////////////////////////////////////////////// |
| 282 |
| 283 class GrGLCubicEffect : public GrGLEffect { |
| 284 public: |
| 285 GrGLCubicEffect(const GrBackendEffectFactory&, const GrDrawEffect&); |
| 286 |
| 287 virtual void emitCode(GrGLShaderBuilder* builder, |
| 288 const GrDrawEffect& drawEffect, |
| 289 EffectKey key, |
| 290 const char* outputColor, |
| 291 const char* inputColor, |
| 292 const TextureSamplerArray&) SK_OVERRIDE; |
| 293 |
| 294 static inline EffectKey GenKey(const GrDrawEffect&, const GrGLCaps&); |
| 295 |
| 296 virtual void setData(const GrGLUniformManager&, const GrDrawEffect&) SK_OVER
RIDE {} |
| 297 |
| 298 private: |
| 299 GrBezierEdgeType fEdgeType; |
| 300 |
| 301 typedef GrGLEffect INHERITED; |
| 302 }; |
| 303 |
| 304 GrGLCubicEffect::GrGLCubicEffect(const GrBackendEffectFactory& factory, |
| 305 const GrDrawEffect& drawEffect) |
| 306 : INHERITED (factory) { |
| 307 const GrCubicEffect& ce = drawEffect.castEffect<GrCubicEffect>(); |
| 308 fEdgeType = ce.getEdgeType(); |
| 309 } |
| 310 |
| 311 void GrGLCubicEffect::emitCode(GrGLShaderBuilder* builder, |
| 312 const GrDrawEffect& drawEffect, |
| 313 EffectKey key, |
| 314 const char* outputColor, |
| 315 const char* inputColor, |
| 316 const TextureSamplerArray& samplers) { |
| 317 const char *vsName, *fsName; |
| 318 |
| 319 builder->addVarying(kVec4f_GrSLType, "CubicCoeffs", |
| 320 &vsName, &fsName); |
| 321 const SkString* attr0Name = |
| 322 builder->getEffectAttributeName(drawEffect.getVertexAttribIndices()[0]); |
| 323 builder->vsCodeAppendf("\t%s = %s;\n", vsName, attr0Name->c_str()); |
| 324 |
| 325 builder->fsCodeAppend("\t\tfloat edgeAlpha;\n"); |
| 326 |
| 327 switch (fEdgeType) { |
| 328 case kHairAA_GrBezierEdgeType: { |
| 329 SkAssertResult(builder->enableFeature( |
| 330 GrGLShaderBuilder::kStandardDerivatives_GLSLFeature)); |
| 331 builder->fsCodeAppendf("\t\tvec3 dklmdx = dFdx(%s.xyz);\n", fsName); |
| 332 builder->fsCodeAppendf("\t\tvec3 dklmdy = dFdy(%s.xyz);\n", fsName); |
| 333 builder->fsCodeAppendf("\t\tfloat dfdx =\n" |
| 334 "\t\t3.0*%s.x*%s.x*dklmdx.x - %s.y*dklmdx.z -
%s.z*dklmdx.y;\n", |
| 335 fsName, fsName, fsName, fsName); |
| 336 builder->fsCodeAppendf("\t\tfloat dfdy =\n" |
| 337 "\t\t3.0*%s.x*%s.x*dklmdy.x - %s.y*dklmdy.z -
%s.z*dklmdy.y;\n", |
| 338 fsName, fsName, fsName, fsName); |
| 339 builder->fsCodeAppend("\t\tvec2 gF = vec2(dfdx, dfdy);\n"); |
| 340 builder->fsCodeAppend("\t\tfloat gFM = sqrt(dot(gF, gF));\n"); |
| 341 builder->fsCodeAppendf("\t\tfloat func = %s.x*%s.x*%s.x - %s.y*%s.z;
\n", |
| 342 fsName, fsName, fsName, fsName, fsName); |
| 343 builder->fsCodeAppend("\t\tfunc = abs(func);\n"); |
| 344 builder->fsCodeAppend("\t\tedgeAlpha = func / gFM;\n"); |
| 345 builder->fsCodeAppend("\t\tedgeAlpha = max(1.0 - edgeAlpha, 0.0);\n"
); |
| 346 // Add line below for smooth cubic ramp |
| 347 // builder->fsCodeAppend("\t\tedgeAlpha = edgeAlpha*edgeAlpha*(3.0-2
.0*edgeAlpha);\n"); |
| 348 break; |
| 349 } |
| 350 case kFillAA_GrBezierEdgeType: { |
| 351 SkAssertResult(builder->enableFeature( |
| 352 GrGLShaderBuilder::kStandardDerivatives_GLSLFeature)); |
| 353 builder->fsCodeAppendf("\t\tvec3 dklmdx = dFdx(%s.xyz);\n", fsName); |
| 354 builder->fsCodeAppendf("\t\tvec3 dklmdy = dFdy(%s.xyz);\n", fsName); |
| 355 builder->fsCodeAppendf("\t\tfloat dfdx =\n" |
| 356 "\t\t3.0*%s.x*%s.x*dklmdx.x - %s.y*dklmdx.z -
%s.z*dklmdx.y;\n", |
| 357 fsName, fsName, fsName, fsName); |
| 358 builder->fsCodeAppendf("\t\tfloat dfdy =\n" |
| 359 "\t\t3.0*%s.x*%s.x*dklmdy.x - %s.y*dklmdy.z -
%s.z*dklmdy.y;\n", |
| 360 fsName, fsName, fsName, fsName); |
| 361 builder->fsCodeAppend("\t\tvec2 gF = vec2(dfdx, dfdy);\n"); |
| 362 builder->fsCodeAppend("\t\tfloat gFM = sqrt(dot(gF, gF));\n"); |
| 363 builder->fsCodeAppendf("\t\tfloat func = %s.x*%s.x*%s.x - %s.y*%s.z;
\n", |
| 364 fsName, fsName, fsName, fsName, fsName); |
| 365 builder->fsCodeAppend("\t\tedgeAlpha = func / gFM;\n"); |
| 366 builder->fsCodeAppend("\t\tedgeAlpha = clamp(1.0 - edgeAlpha, 0.0, 1
.0);\n"); |
| 367 // Add line below for smooth cubic ramp |
| 368 // builder->fsCodeAppend("\t\tedgeAlpha = edgeAlpha*edgeAlpha*(3.0-2
.0*edgeAlpha);\n"); |
| 369 break; |
| 370 } |
| 371 case kFillNoAA_GrBezierEdgeType: { |
| 372 builder->fsCodeAppendf("\t\tedgeAlpha = %s.x*%s.x*%s.x - %s.y*%s.z;\
n", |
| 373 fsName, fsName, fsName, fsName, fsName); |
| 374 builder->fsCodeAppend("\t\tedgeAlpha = float(edgeAlpha < 0.0);\n"); |
| 375 break; |
| 376 } |
| 377 } |
| 378 |
| 379 SkString modulate; |
| 380 GrGLSLModulatef<4>(&modulate, inputColor, "edgeAlpha"); |
| 381 builder->fsCodeAppendf("\t%s = %s;\n", outputColor, modulate.c_str()); |
| 382 } |
| 383 |
| 384 GrGLEffect::EffectKey GrGLCubicEffect::GenKey(const GrDrawEffect& drawEffect, co
nst GrGLCaps&) { |
| 385 const GrCubicEffect& ce = drawEffect.castEffect<GrCubicEffect>(); |
| 386 return ce.isAntiAliased() ? (ce.isFilled() ? 0x0 : 0x1) : 0x2; |
| 387 } |
| 388 |
| 389 ////////////////////////////////////////////////////////////////////////////// |
| 390 |
| 391 GrCubicEffect::~GrCubicEffect() {} |
| 392 |
| 393 const GrBackendEffectFactory& GrCubicEffect::getFactory() const { |
| 394 return GrTBackendEffectFactory<GrCubicEffect>::getInstance(); |
| 395 } |
| 396 |
| 397 GrCubicEffect::GrCubicEffect(GrBezierEdgeType edgeType) : GrEffect() { |
| 398 this->addVertexAttrib(kVec4f_GrSLType); |
| 399 fEdgeType = edgeType; |
| 400 } |
| 401 |
| 402 bool GrCubicEffect::onIsEqual(const GrEffect& other) const { |
| 403 const GrCubicEffect& ce = CastEffect<GrCubicEffect>(other); |
| 404 return (ce.fEdgeType == fEdgeType); |
| 405 } |
| 406 |
| 407 ////////////////////////////////////////////////////////////////////////////// |
| 408 |
| 409 GR_DEFINE_EFFECT_TEST(GrCubicEffect); |
| 410 |
| 411 GrEffectRef* GrCubicEffect::TestCreate(SkMWCRandom* random, |
| 412 GrContext*, |
| 413 const GrDrawTargetCaps& caps, |
| 414 GrTexture*[]) { |
| 415 const GrBezierEdgeType edgeType = static_cast<GrBezierEdgeType>(random->next
ULessThan(3)); |
| 416 return GrCubicEffect::Create(edgeType, caps); |
| 417 } |
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