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| 1 /* | 1 /* |
| 2 * Copyright 2014 Google Inc. | 2 * Copyright 2014 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 "GrDashingEffect.h" | 8 #include "GrDashingEffect.h" |
| 9 | 9 |
| 10 #include "gl/GrGLEffect.h" | 10 #include "gl/GrGLEffect.h" |
| 11 #include "gl/GrGLSL.h" | 11 #include "gl/GrGLSL.h" |
| 12 #include "GrContext.h" | 12 #include "GrContext.h" |
| 13 #include "GrCoordTransform.h" | 13 #include "GrCoordTransform.h" |
| 14 #include "GrDrawTargetCaps.h" | 14 #include "GrDrawTargetCaps.h" |
| 15 #include "GrEffect.h" | 15 #include "GrEffect.h" |
| 16 #include "GrTBackendEffectFactory.h" | 16 #include "GrTBackendEffectFactory.h" |
| 17 #include "SkGpuDevice.h" | |
| 18 #include "SkGr.h" | 17 #include "SkGr.h" |
| 19 | 18 |
| 20 /////////////////////////////////////////////////////////////////////////////// | 19 /////////////////////////////////////////////////////////////////////////////// |
| 21 | 20 |
| 22 static void calc_dash_scaling(SkScalar* parallelScale, SkScalar* perpScale, | 21 static void calc_dash_scaling(SkScalar* parallelScale, SkScalar* perpScale, |
| 23 const SkMatrix& viewMatrix, const SkPoint pts[2]) { | 22 const SkMatrix& viewMatrix, const SkPoint pts[2]) { |
| 24 SkVector vecSrc = pts[1] - pts[0]; | 23 SkVector vecSrc = pts[1] - pts[0]; |
| 25 SkScalar magSrc = vecSrc.length(); | 24 SkScalar magSrc = vecSrc.length(); |
| 26 SkScalar invSrc = magSrc ? SkScalarInvert(magSrc) : 0; | 25 SkScalar invSrc = magSrc ? SkScalarInvert(magSrc) : 0; |
| 27 vecSrc.scale(invSrc); | 26 vecSrc.scale(invSrc); |
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| 80 if (*endingInt > info.fIntervals[0]) { | 79 if (*endingInt > info.fIntervals[0]) { |
| 81 if (0 == info.fIntervals[0]) { | 80 if (0 == info.fIntervals[0]) { |
| 82 *endingInt -= 0.01f; // make sure we capture the last zero size pnt
(used if has caps) | 81 *endingInt -= 0.01f; // make sure we capture the last zero size pnt
(used if has caps) |
| 83 } | 82 } |
| 84 return *endingInt - info.fIntervals[0]; | 83 return *endingInt - info.fIntervals[0]; |
| 85 } | 84 } |
| 86 return 0; | 85 return 0; |
| 87 } | 86 } |
| 88 | 87 |
| 89 | 88 |
| 90 bool GrDashingEffect::DrawDashLine(const SkPoint pts[2], const SkPaint& paint, S
kGpuDevice* dev) { | 89 bool GrDashingEffect::DrawDashLine(const SkPoint pts[2], const SkPaint& paint, G
rContext* context) { |
| 91 GrContext* context = dev->context(); | |
| 92 if (context->getRenderTarget()->isMultisampled()) { | 90 if (context->getRenderTarget()->isMultisampled()) { |
| 93 return false; | 91 return false; |
| 94 } | 92 } |
| 95 | 93 |
| 96 const SkMatrix& viewMatrix = context->getMatrix(); | 94 const SkMatrix& viewMatrix = context->getMatrix(); |
| 97 if (!viewMatrix.preservesRightAngles()) { | 95 if (!viewMatrix.preservesRightAngles()) { |
| 98 return false; | 96 return false; |
| 99 } | 97 } |
| 100 | 98 |
| 101 const SkPathEffect* pe = paint.getPathEffect(); | 99 const SkPathEffect* pe = paint.getPathEffect(); |
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| 132 if(!coordTrans.invert(&srcRotInv)) { | 130 if(!coordTrans.invert(&srcRotInv)) { |
| 133 return false; | 131 return false; |
| 134 } | 132 } |
| 135 } else { | 133 } else { |
| 136 coordTrans.reset(); | 134 coordTrans.reset(); |
| 137 srcRotInv.reset(); | 135 srcRotInv.reset(); |
| 138 memcpy(ptsRot, pts, 2 * sizeof(SkPoint)); | 136 memcpy(ptsRot, pts, 2 * sizeof(SkPoint)); |
| 139 } | 137 } |
| 140 | 138 |
| 141 GrPaint grPaint; | 139 GrPaint grPaint; |
| 142 SkPaint2GrPaintShader(dev, paint, true, &grPaint); | 140 SkPaint2GrPaintShader(context, paint, true, &grPaint); |
| 143 | 141 |
| 144 bool useAA = paint.isAntiAlias(); | 142 bool useAA = paint.isAntiAlias(); |
| 145 | 143 |
| 146 // Scale corrections of intervals and stroke from view matrix | 144 // Scale corrections of intervals and stroke from view matrix |
| 147 SkScalar parallelScale; | 145 SkScalar parallelScale; |
| 148 SkScalar perpScale; | 146 SkScalar perpScale; |
| 149 calc_dash_scaling(¶llelScale, &perpScale, viewMatrix, ptsRot); | 147 calc_dash_scaling(¶llelScale, &perpScale, viewMatrix, ptsRot); |
| 150 | 148 |
| 151 bool hasCap = SkPaint::kSquare_Cap == cap && 0 != srcStrokeWidth; | 149 bool hasCap = SkPaint::kSquare_Cap == cap && 0 != srcStrokeWidth; |
| 152 | 150 |
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| 488 effect = DashingLineEffect::Create(edgeType, info, m, strokeWidth); | 486 effect = DashingLineEffect::Create(edgeType, info, m, strokeWidth); |
| 489 return effect; | 487 return effect; |
| 490 } | 488 } |
| 491 | 489 |
| 492 ////////////////////////////////////////////////////////////////////////////// | 490 ////////////////////////////////////////////////////////////////////////////// |
| 493 | 491 |
| 494 GrEffectRef* GrDashingEffect::Create(GrEffectEdgeType edgeType, const SkPathEffe
ct::DashInfo& info, | 492 GrEffectRef* GrDashingEffect::Create(GrEffectEdgeType edgeType, const SkPathEffe
ct::DashInfo& info, |
| 495 const SkMatrix& matrix, SkScalar strokeWidt
h) { | 493 const SkMatrix& matrix, SkScalar strokeWidt
h) { |
| 496 return DashingLineEffect::Create(edgeType, info, matrix, strokeWidth); | 494 return DashingLineEffect::Create(edgeType, info, matrix, strokeWidth); |
| 497 } | 495 } |
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