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Side by Side Diff: src/effects/SkDisplacementMapEffect.cpp

Issue 85463005: remove SkFloatToScalar macro (Closed) Base URL: https://skia.googlecode.com/svn/trunk
Patch Set: add flag to expose SkFloatToScalar to chromium Created 7 years ago
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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 "SkDisplacementMapEffect.h" 8 #include "SkDisplacementMapEffect.h"
9 #include "SkFlattenableBuffers.h" 9 #include "SkFlattenableBuffers.h"
10 #include "SkUnPreMultiply.h" 10 #include "SkUnPreMultiply.h"
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42 42
43 template<> uint32_t getValue<SkDisplacementMapEffect::kA_ChannelSelectorType>( 43 template<> uint32_t getValue<SkDisplacementMapEffect::kA_ChannelSelectorType>(
44 SkColor l, const SkUnPreMultiply::Scale*) { 44 SkColor l, const SkUnPreMultiply::Scale*) {
45 return SkGetPackedA32(l); 45 return SkGetPackedA32(l);
46 } 46 }
47 47
48 template<SkDisplacementMapEffect::ChannelSelectorType typeX, 48 template<SkDisplacementMapEffect::ChannelSelectorType typeX,
49 SkDisplacementMapEffect::ChannelSelectorType typeY> 49 SkDisplacementMapEffect::ChannelSelectorType typeY>
50 void computeDisplacement(SkScalar scale, SkBitmap* dst, SkBitmap* displ, SkBitma p* src, const SkIRect& bounds) 50 void computeDisplacement(SkScalar scale, SkBitmap* dst, SkBitmap* displ, SkBitma p* src, const SkIRect& bounds)
51 { 51 {
52 static const SkScalar Inv8bit = SkScalarDiv(SK_Scalar1, SkFloatToScalar(255. 0f)); 52 static const SkScalar Inv8bit = SkScalarDiv(SK_Scalar1, 255.0f);
53 const int srcW = src->width(); 53 const int srcW = src->width();
54 const int srcH = src->height(); 54 const int srcH = src->height();
55 const SkScalar scaleForColor = SkScalarMul(scale, Inv8bit); 55 const SkScalar scaleForColor = SkScalarMul(scale, Inv8bit);
56 const SkScalar scaleAdj = SK_ScalarHalf - SkScalarMul(scale, SK_ScalarHalf); 56 const SkScalar scaleAdj = SK_ScalarHalf - SkScalarMul(scale, SK_ScalarHalf);
57 const SkUnPreMultiply::Scale* table = SkUnPreMultiply::GetScaleTable(); 57 const SkUnPreMultiply::Scale* table = SkUnPreMultiply::GetScaleTable();
58 SkPMColor* dstPtr = dst->getAddr32(0, 0); 58 SkPMColor* dstPtr = dst->getAddr32(0, 0);
59 for (int y = bounds.top(); y < bounds.bottom(); ++y) { 59 for (int y = bounds.top(); y < bounds.bottom(); ++y) {
60 const SkPMColor* displPtr = displ->getAddr32(bounds.left(), y); 60 const SkPMColor* displPtr = displ->getAddr32(bounds.left(), y);
61 for (int x = bounds.left(); x < bounds.right(); ++x, ++displPtr) { 61 for (int x = bounds.left(); x < bounds.right(); ++x, ++displPtr) {
62 const SkScalar displX = SkScalarMul(scaleForColor, 62 const SkScalar displX = SkScalarMul(scaleForColor,
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406 GrEffectUnitTest::kAlphaTextureIdx; 406 GrEffectUnitTest::kAlphaTextureIdx;
407 int texIdxColor = random->nextBool() ? GrEffectUnitTest::kSkiaPMTextureIdx : 407 int texIdxColor = random->nextBool() ? GrEffectUnitTest::kSkiaPMTextureIdx :
408 GrEffectUnitTest::kAlphaTextureIdx; 408 GrEffectUnitTest::kAlphaTextureIdx;
409 static const int kMaxComponent = 4; 409 static const int kMaxComponent = 4;
410 SkDisplacementMapEffect::ChannelSelectorType xChannelSelector = 410 SkDisplacementMapEffect::ChannelSelectorType xChannelSelector =
411 static_cast<SkDisplacementMapEffect::ChannelSelectorType>( 411 static_cast<SkDisplacementMapEffect::ChannelSelectorType>(
412 random->nextRangeU(1, kMaxComponent)); 412 random->nextRangeU(1, kMaxComponent));
413 SkDisplacementMapEffect::ChannelSelectorType yChannelSelector = 413 SkDisplacementMapEffect::ChannelSelectorType yChannelSelector =
414 static_cast<SkDisplacementMapEffect::ChannelSelectorType>( 414 static_cast<SkDisplacementMapEffect::ChannelSelectorType>(
415 random->nextRangeU(1, kMaxComponent)); 415 random->nextRangeU(1, kMaxComponent));
416 SkScalar scale = random->nextRangeScalar(0, SkFloatToScalar(100.0f)); 416 SkScalar scale = random->nextRangeScalar(0, 100.0f);
417 417
418 return GrDisplacementMapEffect::Create(xChannelSelector, yChannelSelector, s cale, 418 return GrDisplacementMapEffect::Create(xChannelSelector, yChannelSelector, s cale,
419 textures[texIdxDispl], textures[texId xColor]); 419 textures[texIdxDispl], textures[texId xColor]);
420 } 420 }
421 421
422 /////////////////////////////////////////////////////////////////////////////// 422 ///////////////////////////////////////////////////////////////////////////////
423 423
424 GrGLDisplacementMapEffect::GrGLDisplacementMapEffect(const GrBackendEffectFactor y& factory, 424 GrGLDisplacementMapEffect::GrGLDisplacementMapEffect(const GrBackendEffectFactor y& factory,
425 const GrDrawEffect& drawEff ect) 425 const GrDrawEffect& drawEff ect)
426 : INHERITED(factory) 426 : INHERITED(factory)
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524 const GrGLCaps&) { 524 const GrGLCaps&) {
525 const GrDisplacementMapEffect& displacementMap = 525 const GrDisplacementMapEffect& displacementMap =
526 drawEffect.castEffect<GrDisplacementMapEffect>(); 526 drawEffect.castEffect<GrDisplacementMapEffect>();
527 527
528 EffectKey xKey = displacementMap.xChannelSelector(); 528 EffectKey xKey = displacementMap.xChannelSelector();
529 EffectKey yKey = displacementMap.yChannelSelector() << SkDisplacementMapEffe ct::kKeyBits; 529 EffectKey yKey = displacementMap.yChannelSelector() << SkDisplacementMapEffe ct::kKeyBits;
530 530
531 return xKey | yKey; 531 return xKey | yKey;
532 } 532 }
533 #endif 533 #endif
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