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| 1 /* | 1 /* |
| 2 * Copyright 2013 Google Inc. | 2 * Copyright 2013 Google Inc. |
| 3 * | 3 * |
| 4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
| 5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
| 6 */ | 6 */ |
| 7 | 7 |
| 8 #include "SkAlphaThresholdFilter.h" | 8 #include "SkAlphaThresholdFilter.h" |
| 9 #include "SkBitmap.h" | 9 #include "SkBitmap.h" |
| 10 #include "SkReadBuffer.h" | 10 #include "SkReadBuffer.h" |
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| 49 #include "GrTBackendEffectFactory.h" | 49 #include "GrTBackendEffectFactory.h" |
| 50 #include "GrTextureAccess.h" | 50 #include "GrTextureAccess.h" |
| 51 | 51 |
| 52 #include "SkGr.h" | 52 #include "SkGr.h" |
| 53 | 53 |
| 54 class GrGLAlphaThresholdEffect; | 54 class GrGLAlphaThresholdEffect; |
| 55 | 55 |
| 56 class AlphaThresholdEffect : public GrEffect { | 56 class AlphaThresholdEffect : public GrEffect { |
| 57 | 57 |
| 58 public: | 58 public: |
| 59 static GrEffectRef* Create(GrTexture* texture, | 59 static GrEffect* Create(GrTexture* texture, |
| 60 GrTexture* maskTexture, | 60 GrTexture* maskTexture, |
| 61 float innerThreshold, | 61 float innerThreshold, |
| 62 float outerThreshold) { | 62 float outerThreshold) { |
| 63 return SkNEW_ARGS(AlphaThresholdEffect, (texture, | 63 return SkNEW_ARGS(AlphaThresholdEffect, (texture, |
| 64 maskTexture, | 64 maskTexture, |
| 65 innerThreshold, | 65 innerThreshold, |
| 66 outerThreshold)); | 66 outerThreshold)); |
| 67 } | 67 } |
| 68 | 68 |
| 69 virtual ~AlphaThresholdEffect() {}; | 69 virtual ~AlphaThresholdEffect() {}; |
| 70 | 70 |
| 71 static const char* Name() { return "Alpha Threshold"; } | 71 static const char* Name() { return "Alpha Threshold"; } |
| 72 | 72 |
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| 188 const AlphaThresholdEffect& alpha_threshold = | 188 const AlphaThresholdEffect& alpha_threshold = |
| 189 drawEffect.castEffect<AlphaThresholdEffect>(); | 189 drawEffect.castEffect<AlphaThresholdEffect>(); |
| 190 uman.set1f(fInnerThresholdVar, alpha_threshold.innerThreshold()); | 190 uman.set1f(fInnerThresholdVar, alpha_threshold.innerThreshold()); |
| 191 uman.set1f(fOuterThresholdVar, alpha_threshold.outerThreshold()); | 191 uman.set1f(fOuterThresholdVar, alpha_threshold.outerThreshold()); |
| 192 } | 192 } |
| 193 | 193 |
| 194 ///////////////////////////////////////////////////////////////////// | 194 ///////////////////////////////////////////////////////////////////// |
| 195 | 195 |
| 196 GR_DEFINE_EFFECT_TEST(AlphaThresholdEffect); | 196 GR_DEFINE_EFFECT_TEST(AlphaThresholdEffect); |
| 197 | 197 |
| 198 GrEffectRef* AlphaThresholdEffect::TestCreate(SkRandom* random, | 198 GrEffect* AlphaThresholdEffect::TestCreate(SkRandom* random, |
| 199 GrContext* context, | 199 GrContext* context, |
| 200 const GrDrawTargetCaps&, | 200 const GrDrawTargetCaps&, |
| 201 GrTexture** textures) { | 201 GrTexture** textures) { |
| 202 GrTexture* bmpTex = textures[GrEffectUnitTest::kSkiaPMTextureIdx]; | 202 GrTexture* bmpTex = textures[GrEffectUnitTest::kSkiaPMTextureIdx]; |
| 203 GrTexture* maskTex = textures[GrEffectUnitTest::kAlphaTextureIdx]; | 203 GrTexture* maskTex = textures[GrEffectUnitTest::kAlphaTextureIdx]; |
| 204 float inner_thresh = random->nextUScalar1(); | 204 float inner_thresh = random->nextUScalar1(); |
| 205 float outer_thresh = random->nextUScalar1(); | 205 float outer_thresh = random->nextUScalar1(); |
| 206 return AlphaThresholdEffect::Create(bmpTex, maskTex, inner_thresh, outer_thr
esh); | 206 return AlphaThresholdEffect::Create(bmpTex, maskTex, inner_thresh, outer_thr
esh); |
| 207 } | 207 } |
| 208 | 208 |
| 209 /////////////////////////////////////////////////////////////////////////////// | 209 /////////////////////////////////////////////////////////////////////////////// |
| 210 | 210 |
| 211 const GrBackendEffectFactory& AlphaThresholdEffect::getFactory() const { | 211 const GrBackendEffectFactory& AlphaThresholdEffect::getFactory() const { |
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| 356 (U8CPU)(SkColorGetG(source) *
scale), | 356 (U8CPU)(SkColorGetG(source) *
scale), |
| 357 (U8CPU)(SkColorGetB(source) *
scale)); | 357 (U8CPU)(SkColorGetB(source) *
scale)); |
| 358 } | 358 } |
| 359 } | 359 } |
| 360 dptr[y * dst->width() + x] = output_color; | 360 dptr[y * dst->width() + x] = output_color; |
| 361 } | 361 } |
| 362 } | 362 } |
| 363 | 363 |
| 364 return true; | 364 return true; |
| 365 } | 365 } |
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