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1 | 1 |
2 /* | 2 /* |
3 * Copyright 2012 Google Inc. | 3 * Copyright 2012 Google Inc. |
4 * | 4 * |
5 * Use of this source code is governed by a BSD-style license that can be | 5 * Use of this source code is governed by a BSD-style license that can be |
6 * found in the LICENSE file. | 6 * found in the LICENSE file. |
7 */ | 7 */ |
8 | 8 |
9 #include "SkSweepGradient.h" | 9 #include "SkSweepGradient.h" |
10 | 10 |
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241 NULL, kNone_SkFi
lterQuality); | 241 NULL, kNone_SkFi
lterQuality); |
242 GrAlwaysAssert(fp); | 242 GrAlwaysAssert(fp); |
243 return fp; | 243 return fp; |
244 } | 244 } |
245 | 245 |
246 ///////////////////////////////////////////////////////////////////// | 246 ///////////////////////////////////////////////////////////////////// |
247 | 247 |
248 void GrGLSweepGradient::emitCode(EmitArgs& args) { | 248 void GrGLSweepGradient::emitCode(EmitArgs& args) { |
249 const GrSweepGradient& ge = args.fFp.cast<GrSweepGradient>(); | 249 const GrSweepGradient& ge = args.fFp.cast<GrSweepGradient>(); |
250 this->emitUniforms(args.fBuilder, ge); | 250 this->emitUniforms(args.fBuilder, ge); |
251 SkString coords2D = args.fBuilder->getFragmentShaderBuilder() | 251 SkString coords2D = args.fFragBuilder->ensureFSCoords2D(args.fCoords, 0); |
252 ->ensureFSCoords2D(args.fCoords, 0); | |
253 SkString t; | 252 SkString t; |
254 // 0.1591549430918 is 1/(2*pi), used since atan returns values [-pi, pi] | 253 // 0.1591549430918 is 1/(2*pi), used since atan returns values [-pi, pi] |
255 // On Intel GPU there is an issue where it reads the second arguement to ata
n "- %s.x" as an int | 254 // On Intel GPU there is an issue where it reads the second arguement to ata
n "- %s.x" as an int |
256 // thus must us -1.0 * %s.x to work correctly | 255 // thus must us -1.0 * %s.x to work correctly |
257 if (args.fBuilder->glslCaps()->mustForceNegatedAtanParamToFloat()){ | 256 if (args.fBuilder->glslCaps()->mustForceNegatedAtanParamToFloat()){ |
258 t.printf("atan(- %s.y, -1.0 * %s.x) * 0.1591549430918 + 0.5", | 257 t.printf("atan(- %s.y, -1.0 * %s.x) * 0.1591549430918 + 0.5", |
259 coords2D.c_str(), coords2D.c_str()); | 258 coords2D.c_str(), coords2D.c_str()); |
260 } else { | 259 } else { |
261 t.printf("atan(- %s.y, - %s.x) * 0.1591549430918 + 0.5", | 260 t.printf("atan(- %s.y, - %s.x) * 0.1591549430918 + 0.5", |
262 coords2D.c_str(), coords2D.c_str()); | 261 coords2D.c_str(), coords2D.c_str()); |
263 } | 262 } |
264 this->emitColor(args.fBuilder, ge, t.c_str(), args.fOutputColor, args.fInput
Color, | 263 this->emitColor(args.fBuilder, |
| 264 args.fFragBuilder, |
| 265 ge, t.c_str(), |
| 266 args.fOutputColor, |
| 267 args.fInputColor, |
265 args.fSamplers); | 268 args.fSamplers); |
266 } | 269 } |
267 | 270 |
268 ///////////////////////////////////////////////////////////////////// | 271 ///////////////////////////////////////////////////////////////////// |
269 | 272 |
270 const GrFragmentProcessor* SkSweepGradient::asFragmentProcessor( | 273 const GrFragmentProcessor* SkSweepGradient::asFragmentProcessor( |
271 GrContext* context, | 274 GrContext* context, |
272 const SkMatrix& viewM, | 275 const SkMatrix& viewM, |
273 const SkMatrix* localMatrix, | 276 const SkMatrix* localMatrix, |
274 SkFilterQuality) const { | 277 SkFilterQuality) const { |
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301 str->appendScalar(fCenter.fX); | 304 str->appendScalar(fCenter.fX); |
302 str->append(", "); | 305 str->append(", "); |
303 str->appendScalar(fCenter.fY); | 306 str->appendScalar(fCenter.fY); |
304 str->append(") "); | 307 str->append(") "); |
305 | 308 |
306 this->INHERITED::toString(str); | 309 this->INHERITED::toString(str); |
307 | 310 |
308 str->append(")"); | 311 str->append(")"); |
309 } | 312 } |
310 #endif | 313 #endif |
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