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| 1 | 1 |
| 2 /* | 2 /* |
| 3 * Copyright 2015 Google Inc. | 3 * Copyright 2015 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 "GrCircleBlurFragmentProcessor.h" | 9 #include "GrCircleBlurFragmentProcessor.h" |
| 10 | 10 |
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| 76 // w - the size of the profile texture | 76 // w - the size of the profile texture |
| 77 pdman.set4f(fDataUniform, circle.centerX(), circle.centerY(), cbfp.offset(), | 77 pdman.set4f(fDataUniform, circle.centerX(), circle.centerY(), cbfp.offset(), |
| 78 SkIntToScalar(cbfp.profileSize())); | 78 SkIntToScalar(cbfp.profileSize())); |
| 79 } | 79 } |
| 80 | 80 |
| 81 /////////////////////////////////////////////////////////////////////////////// | 81 /////////////////////////////////////////////////////////////////////////////// |
| 82 | 82 |
| 83 GrCircleBlurFragmentProcessor::GrCircleBlurFragmentProcessor(const SkRect& circl
e, | 83 GrCircleBlurFragmentProcessor::GrCircleBlurFragmentProcessor(const SkRect& circl
e, |
| 84 float sigma, | 84 float sigma, |
| 85 float offset, | 85 float offset, |
| 86 GrTexture* blurProf
ile) | 86 GrTexture* blurProf
ile, |
| 87 GrRenderTarget* dst
RT) |
| 87 : fCircle(circle) | 88 : fCircle(circle) |
| 88 , fSigma(sigma) | 89 , fSigma(sigma) |
| 89 , fOffset(offset) | 90 , fOffset(offset) |
| 90 , fBlurProfileAccess(blurProfile, GrTextureParams::kBilerp_FilterMode) { | 91 , fBlurProfileAccess(blurProfile, GrTextureParams::kBilerp_FilterMode, SkSha
der::kClamp_TileMode, dstRT) { |
| 91 this->initClassID<GrCircleBlurFragmentProcessor>(); | 92 this->initClassID<GrCircleBlurFragmentProcessor>(); |
| 92 this->addTextureAccess(&fBlurProfileAccess); | 93 this->addTextureAccess(&fBlurProfileAccess); |
| 93 this->setWillReadFragmentPosition(); | 94 this->setWillReadFragmentPosition(); |
| 94 } | 95 } |
| 95 | 96 |
| 96 GrGLFragmentProcessor* GrCircleBlurFragmentProcessor::onCreateGLInstance() const
{ | 97 GrGLFragmentProcessor* GrCircleBlurFragmentProcessor::onCreateGLInstance() const
{ |
| 97 return new GrGLCircleBlurFragmentProcessor(*this); | 98 return new GrGLCircleBlurFragmentProcessor(*this); |
| 98 } | 99 } |
| 99 | 100 |
| 100 void GrCircleBlurFragmentProcessor::onGetGLProcessorKey(const GrGLSLCaps& caps, | 101 void GrCircleBlurFragmentProcessor::onGetGLProcessorKey(const GrGLSLCaps& caps, |
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| 208 weights[i] = eval_at(offset+i, halfWH, halfKernel.get(), kernelWH); | 209 weights[i] = eval_at(offset+i, halfWH, halfKernel.get(), kernelWH); |
| 209 } | 210 } |
| 210 | 211 |
| 211 return weights; | 212 return weights; |
| 212 } | 213 } |
| 213 | 214 |
| 214 GrTexture* GrCircleBlurFragmentProcessor::CreateCircleBlurProfileTexture( | 215 GrTexture* GrCircleBlurFragmentProcessor::CreateCircleBlurProfileTexture( |
| 215 GrTextureProvide
r* textureProvider, | 216 GrTextureProvide
r* textureProvider, |
| 216 const SkRect& ci
rcle, | 217 const SkRect& ci
rcle, |
| 217 float sigma, | 218 float sigma, |
| 218 float* offset) { | 219 float* offset, |
| 220 GrRenderTarget*
dstRT) { |
| 219 float halfWH = circle.width() / 2.0f; | 221 float halfWH = circle.width() / 2.0f; |
| 220 | 222 |
| 221 int size; | 223 int size; |
| 222 compute_profile_offset_and_size(halfWH, sigma, offset, &size); | 224 compute_profile_offset_and_size(halfWH, sigma, offset, &size); |
| 223 | 225 |
| 224 GrSurfaceDesc texDesc; | 226 GrSurfaceDesc texDesc; |
| 225 texDesc.fWidth = size; | 227 texDesc.fWidth = size; |
| 226 texDesc.fHeight = 1; | 228 texDesc.fHeight = 1; |
| 227 texDesc.fConfig = kAlpha_8_GrPixelConfig; | 229 texDesc.fConfig = kAlpha_8_GrPixelConfig; |
| 228 | 230 |
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| 248 | 250 |
| 249 return blurProfile; | 251 return blurProfile; |
| 250 } | 252 } |
| 251 | 253 |
| 252 GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrCircleBlurFragmentProcessor); | 254 GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrCircleBlurFragmentProcessor); |
| 253 | 255 |
| 254 const GrFragmentProcessor* GrCircleBlurFragmentProcessor::TestCreate(GrProcessor
TestData* d) { | 256 const GrFragmentProcessor* GrCircleBlurFragmentProcessor::TestCreate(GrProcessor
TestData* d) { |
| 255 SkScalar wh = d->fRandom->nextRangeScalar(100.f, 1000.f); | 257 SkScalar wh = d->fRandom->nextRangeScalar(100.f, 1000.f); |
| 256 SkScalar sigma = d->fRandom->nextRangeF(1.f,10.f); | 258 SkScalar sigma = d->fRandom->nextRangeF(1.f,10.f); |
| 257 SkRect circle = SkRect::MakeWH(wh, wh); | 259 SkRect circle = SkRect::MakeWH(wh, wh); |
| 258 return GrCircleBlurFragmentProcessor::Create(d->fContext->textureProvider(),
circle, sigma); | 260 return GrCircleBlurFragmentProcessor::Create(d->fContext->textureProvider(),
circle, sigma, NULL); |
| 259 } | 261 } |
| 260 | 262 |
| 261 #endif | 263 #endif |
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