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1 /* | 1 /* |
2 * Copyright 2012 Google Inc. | 2 * Copyright 2012 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 "GrAARectRenderer.h" | 8 #include "GrAARectRenderer.h" |
9 #include "GrGpu.h" | 9 #include "GrGpu.h" |
10 #include "gl/GrGLEffect.h" | 10 #include "gl/GrGLEffect.h" |
11 #include "gl/GrGLVertexEffect.h" | 11 #include "gl/GrGLVertexEffect.h" |
12 #include "GrTBackendEffectFactory.h" | 12 #include "GrTBackendEffectFactory.h" |
13 #include "SkColorPriv.h" | 13 #include "SkColorPriv.h" |
14 #include "effects/GrVertexEffect.h" | 14 #include "effects/GrVertexEffect.h" |
15 | 15 |
16 /////////////////////////////////////////////////////////////////////////////// | 16 /////////////////////////////////////////////////////////////////////////////// |
17 class GrGLAlignedRectEffect; | 17 class GrGLAlignedRectEffect; |
18 | 18 |
19 // Axis Aligned special case | 19 // Axis Aligned special case |
20 class GrAlignedRectEffect : public GrVertexEffect { | 20 class GrAlignedRectEffect : public GrVertexEffect { |
21 public: | 21 public: |
22 static GrEffectRef* Create() { | 22 static GrEffect* Create() { |
23 GR_CREATE_STATIC_EFFECT(gAlignedRectEffect, GrAlignedRectEffect, ()); | 23 GR_CREATE_STATIC_EFFECT(gAlignedRectEffect, GrAlignedRectEffect, ()); |
24 gAlignedRectEffect->ref(); | 24 gAlignedRectEffect->ref(); |
25 return gAlignedRectEffect; | 25 return gAlignedRectEffect; |
26 } | 26 } |
27 | 27 |
28 virtual ~GrAlignedRectEffect() {} | 28 virtual ~GrAlignedRectEffect() {} |
29 | 29 |
30 static const char* Name() { return "AlignedRectEdge"; } | 30 static const char* Name() { return "AlignedRectEdge"; } |
31 | 31 |
32 virtual void getConstantColorComponents(GrColor* color, | 32 virtual void getConstantColorComponents(GrColor* color, |
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106 virtual bool onIsEqual(const GrEffect&) const SK_OVERRIDE { return true; } | 106 virtual bool onIsEqual(const GrEffect&) const SK_OVERRIDE { return true; } |
107 | 107 |
108 GR_DECLARE_EFFECT_TEST; | 108 GR_DECLARE_EFFECT_TEST; |
109 | 109 |
110 typedef GrVertexEffect INHERITED; | 110 typedef GrVertexEffect INHERITED; |
111 }; | 111 }; |
112 | 112 |
113 | 113 |
114 GR_DEFINE_EFFECT_TEST(GrAlignedRectEffect); | 114 GR_DEFINE_EFFECT_TEST(GrAlignedRectEffect); |
115 | 115 |
116 GrEffectRef* GrAlignedRectEffect::TestCreate(SkRandom* random, | 116 GrEffect* GrAlignedRectEffect::TestCreate(SkRandom* random, |
117 GrContext* context, | 117 GrContext* context, |
118 const GrDrawTargetCaps&, | 118 const GrDrawTargetCaps&, |
119 GrTexture* textures[]) { | 119 GrTexture* textures[]) { |
120 return GrAlignedRectEffect::Create(); | 120 return GrAlignedRectEffect::Create(); |
121 } | 121 } |
122 | 122 |
123 /////////////////////////////////////////////////////////////////////////////// | 123 /////////////////////////////////////////////////////////////////////////////// |
124 class GrGLRectEffect; | 124 class GrGLRectEffect; |
125 | 125 |
126 /** | 126 /** |
127 * The output of this effect is a modulation of the input color and coverage | 127 * The output of this effect is a modulation of the input color and coverage |
128 * for an arbitrarily oriented rect. The rect is specified as: | 128 * for an arbitrarily oriented rect. The rect is specified as: |
129 * Center of the rect | 129 * Center of the rect |
130 * Unit vector point down the height of the rect | 130 * Unit vector point down the height of the rect |
131 * Half width + 0.5 | 131 * Half width + 0.5 |
132 * Half height + 0.5 | 132 * Half height + 0.5 |
133 * The center and vector are stored in a vec4 varying ("RectEdge") with the | 133 * The center and vector are stored in a vec4 varying ("RectEdge") with the |
134 * center in the xy components and the vector in the zw components. | 134 * center in the xy components and the vector in the zw components. |
135 * The munged width and height are stored in a vec2 varying ("WidthHeight") | 135 * The munged width and height are stored in a vec2 varying ("WidthHeight") |
136 * with the width in x and the height in y. | 136 * with the width in x and the height in y. |
137 */ | 137 */ |
138 class GrRectEffect : public GrVertexEffect { | 138 class GrRectEffect : public GrVertexEffect { |
139 public: | 139 public: |
140 static GrEffectRef* Create() { | 140 static GrEffect* Create() { |
141 GR_CREATE_STATIC_EFFECT(gRectEffect, GrRectEffect, ()); | 141 GR_CREATE_STATIC_EFFECT(gRectEffect, GrRectEffect, ()); |
142 gRectEffect->ref(); | 142 gRectEffect->ref(); |
143 return gRectEffect; | 143 return gRectEffect; |
144 } | 144 } |
145 | 145 |
146 virtual ~GrRectEffect() {} | 146 virtual ~GrRectEffect() {} |
147 | 147 |
148 static const char* Name() { return "RectEdge"; } | 148 static const char* Name() { return "RectEdge"; } |
149 | 149 |
150 virtual void getConstantColorComponents(GrColor* color, | 150 virtual void getConstantColorComponents(GrColor* color, |
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241 virtual bool onIsEqual(const GrEffect&) const SK_OVERRIDE { return true; } | 241 virtual bool onIsEqual(const GrEffect&) const SK_OVERRIDE { return true; } |
242 | 242 |
243 GR_DECLARE_EFFECT_TEST; | 243 GR_DECLARE_EFFECT_TEST; |
244 | 244 |
245 typedef GrVertexEffect INHERITED; | 245 typedef GrVertexEffect INHERITED; |
246 }; | 246 }; |
247 | 247 |
248 | 248 |
249 GR_DEFINE_EFFECT_TEST(GrRectEffect); | 249 GR_DEFINE_EFFECT_TEST(GrRectEffect); |
250 | 250 |
251 GrEffectRef* GrRectEffect::TestCreate(SkRandom* random, | 251 GrEffect* GrRectEffect::TestCreate(SkRandom* random, |
252 GrContext* context, | 252 GrContext* context, |
253 const GrDrawTargetCaps&, | 253 const GrDrawTargetCaps&, |
254 GrTexture* textures[]) { | 254 GrTexture* textures[]) { |
255 return GrRectEffect::Create(); | 255 return GrRectEffect::Create(); |
256 } | 256 } |
257 | 257 |
258 /////////////////////////////////////////////////////////////////////////////// | 258 /////////////////////////////////////////////////////////////////////////////// |
259 | 259 |
260 namespace { | 260 namespace { |
261 | 261 |
262 extern const GrVertexAttrib gAARectCoverageAttribs[] = { | 262 extern const GrVertexAttrib gAARectCoverageAttribs[] = { |
263 {kVec2f_GrVertexAttribType, 0, kPosition_GrVertexAttribBindin
g}, | 263 {kVec2f_GrVertexAttribType, 0, kPosition_GrVertexAttribBindin
g}, |
264 {kVec4ub_GrVertexAttribType, sizeof(SkPoint), kCoverage_GrVertexAttribBindin
g}, | 264 {kVec4ub_GrVertexAttribType, sizeof(SkPoint), kCoverage_GrVertexAttribBindin
g}, |
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624 SkASSERT(sizeof(RectVertex) == drawState->getVertexSize()); | 624 SkASSERT(sizeof(RectVertex) == drawState->getVertexSize()); |
625 | 625 |
626 GrDrawTarget::AutoReleaseGeometry geo(target, 4, 0); | 626 GrDrawTarget::AutoReleaseGeometry geo(target, 4, 0); |
627 if (!geo.succeeded()) { | 627 if (!geo.succeeded()) { |
628 GrPrintf("Failed to get space for vertices!\n"); | 628 GrPrintf("Failed to get space for vertices!\n"); |
629 return; | 629 return; |
630 } | 630 } |
631 | 631 |
632 RectVertex* verts = reinterpret_cast<RectVertex*>(geo.vertices()); | 632 RectVertex* verts = reinterpret_cast<RectVertex*>(geo.vertices()); |
633 | 633 |
634 GrEffectRef* effect = GrRectEffect::Create(); | 634 GrEffect* effect = GrRectEffect::Create(); |
635 static const int kRectAttrIndex = 1; | 635 static const int kRectAttrIndex = 1; |
636 static const int kWidthIndex = 2; | 636 static const int kWidthIndex = 2; |
637 drawState->addCoverageEffect(effect, kRectAttrIndex, kWidthIndex)->unref(); | 637 drawState->addCoverageEffect(effect, kRectAttrIndex, kWidthIndex)->unref(); |
638 | 638 |
639 for (int i = 0; i < 4; ++i) { | 639 for (int i = 0; i < 4; ++i) { |
640 verts[i].fCenter = center; | 640 verts[i].fCenter = center; |
641 verts[i].fDir = dir; | 641 verts[i].fDir = dir; |
642 verts[i].fWidthHeight.fX = newWidth; | 642 verts[i].fWidthHeight.fX = newWidth; |
643 verts[i].fWidthHeight.fY = newHeight; | 643 verts[i].fWidthHeight.fY = newHeight; |
644 } | 644 } |
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674 SkASSERT(sizeof(AARectVertex) == drawState->getVertexSize()); | 674 SkASSERT(sizeof(AARectVertex) == drawState->getVertexSize()); |
675 | 675 |
676 GrDrawTarget::AutoReleaseGeometry geo(target, 4, 0); | 676 GrDrawTarget::AutoReleaseGeometry geo(target, 4, 0); |
677 if (!geo.succeeded()) { | 677 if (!geo.succeeded()) { |
678 GrPrintf("Failed to get space for vertices!\n"); | 678 GrPrintf("Failed to get space for vertices!\n"); |
679 return; | 679 return; |
680 } | 680 } |
681 | 681 |
682 AARectVertex* verts = reinterpret_cast<AARectVertex*>(geo.vertices()); | 682 AARectVertex* verts = reinterpret_cast<AARectVertex*>(geo.vertices()); |
683 | 683 |
684 GrEffectRef* effect = GrAlignedRectEffect::Create(); | 684 GrEffect* effect = GrAlignedRectEffect::Create(); |
685 static const int kOffsetIndex = 1; | 685 static const int kOffsetIndex = 1; |
686 drawState->addCoverageEffect(effect, kOffsetIndex)->unref(); | 686 drawState->addCoverageEffect(effect, kOffsetIndex)->unref(); |
687 | 687 |
688 SkRect devRect; | 688 SkRect devRect; |
689 combinedMatrix.mapRect(&devRect, rect); | 689 combinedMatrix.mapRect(&devRect, rect); |
690 | 690 |
691 SkRect devBounds = { | 691 SkRect devBounds = { |
692 devRect.fLeft - SK_ScalarHalf, | 692 devRect.fLeft - SK_ScalarHalf, |
693 devRect.fTop - SK_ScalarHalf, | 693 devRect.fTop - SK_ScalarHalf, |
694 devRect.fRight + SK_ScalarHalf, | 694 devRect.fRight + SK_ScalarHalf, |
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923 combinedMatrix.mapPoints((SkPoint*)&devInside, (const SkPoint*)&rects[1], 2)
; | 923 combinedMatrix.mapPoints((SkPoint*)&devInside, (const SkPoint*)&rects[1], 2)
; |
924 | 924 |
925 if (devInside.isEmpty()) { | 925 if (devInside.isEmpty()) { |
926 this->fillAARect(gpu, target, devOutside, SkMatrix::I(), devOutside, use
VertexCoverage); | 926 this->fillAARect(gpu, target, devOutside, SkMatrix::I(), devOutside, use
VertexCoverage); |
927 return; | 927 return; |
928 } | 928 } |
929 | 929 |
930 this->geometryStrokeAARect(gpu, target, devOutside, devOutsideAssist, | 930 this->geometryStrokeAARect(gpu, target, devOutside, devOutsideAssist, |
931 devInside, useVertexCoverage, true); | 931 devInside, useVertexCoverage, true); |
932 } | 932 } |
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