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1 | 1 |
2 /* | 2 /* |
3 * Copyright 2012 Google Inc. | 3 * Copyright 2012 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 | 9 |
10 #include "GrStencilAndCoverPathRenderer.h" | 10 #include "GrStencilAndCoverPathRenderer.h" |
11 #include "GrContext.h" | 11 #include "GrContext.h" |
12 #include "GrDrawTargetCaps.h" | 12 #include "GrDrawTargetCaps.h" |
13 #include "GrGpu.h" | 13 #include "GrGpu.h" |
14 #include "GrPath.h" | 14 #include "GrPath.h" |
15 #include "SkStrokeRec.h" | 15 #include "SkStrokeRec.h" |
16 | 16 |
17 GrPathRenderer* GrStencilAndCoverPathRenderer::Create(GrContext* context) { | 17 GrPathRenderer* GrStencilAndCoverPathRenderer::Create(GrContext* context) { |
18 GrAssert(NULL != context); | 18 SkASSERT(NULL != context); |
19 GrAssert(NULL != context->getGpu()); | 19 SkASSERT(NULL != context->getGpu()); |
20 if (context->getGpu()->caps()->pathStencilingSupport()) { | 20 if (context->getGpu()->caps()->pathStencilingSupport()) { |
21 return SkNEW_ARGS(GrStencilAndCoverPathRenderer, (context->getGpu())); | 21 return SkNEW_ARGS(GrStencilAndCoverPathRenderer, (context->getGpu())); |
22 } else { | 22 } else { |
23 return NULL; | 23 return NULL; |
24 } | 24 } |
25 } | 25 } |
26 | 26 |
27 GrStencilAndCoverPathRenderer::GrStencilAndCoverPathRenderer(GrGpu* gpu) { | 27 GrStencilAndCoverPathRenderer::GrStencilAndCoverPathRenderer(GrGpu* gpu) { |
28 GrAssert(gpu->caps()->pathStencilingSupport()); | 28 SkASSERT(gpu->caps()->pathStencilingSupport()); |
29 fGpu = gpu; | 29 fGpu = gpu; |
30 gpu->ref(); | 30 gpu->ref(); |
31 } | 31 } |
32 | 32 |
33 GrStencilAndCoverPathRenderer::~GrStencilAndCoverPathRenderer() { | 33 GrStencilAndCoverPathRenderer::~GrStencilAndCoverPathRenderer() { |
34 fGpu->unref(); | 34 fGpu->unref(); |
35 } | 35 } |
36 | 36 |
37 bool GrStencilAndCoverPathRenderer::canDrawPath(const SkPath& path, | 37 bool GrStencilAndCoverPathRenderer::canDrawPath(const SkPath& path, |
38 const SkStrokeRec& stroke, | 38 const SkStrokeRec& stroke, |
39 const GrDrawTarget* target, | 39 const GrDrawTarget* target, |
40 bool antiAlias) const { | 40 bool antiAlias) const { |
41 return stroke.isFillStyle() && | 41 return stroke.isFillStyle() && |
42 !antiAlias && // doesn't do per-path AA, relies on the target having
MSAA | 42 !antiAlias && // doesn't do per-path AA, relies on the target having
MSAA |
43 target->getDrawState().getStencil().isDisabled(); | 43 target->getDrawState().getStencil().isDisabled(); |
44 } | 44 } |
45 | 45 |
46 GrPathRenderer::StencilSupport GrStencilAndCoverPathRenderer::onGetStencilSuppor
t( | 46 GrPathRenderer::StencilSupport GrStencilAndCoverPathRenderer::onGetStencilSuppor
t( |
47 const SkPath&, | 47 const SkPath&, |
48 const SkStrokeRec& , | 48 const SkStrokeRec& , |
49 const GrDrawTarget*) con
st { | 49 const GrDrawTarget*) con
st { |
50 return GrPathRenderer::kStencilOnly_StencilSupport; | 50 return GrPathRenderer::kStencilOnly_StencilSupport; |
51 } | 51 } |
52 | 52 |
53 void GrStencilAndCoverPathRenderer::onStencilPath(const SkPath& path, | 53 void GrStencilAndCoverPathRenderer::onStencilPath(const SkPath& path, |
54 const SkStrokeRec& stroke, | 54 const SkStrokeRec& stroke, |
55 GrDrawTarget* target) { | 55 GrDrawTarget* target) { |
56 GrAssert(!path.isInverseFillType()); | 56 SkASSERT(!path.isInverseFillType()); |
57 SkAutoTUnref<GrPath> p(fGpu->createPath(path)); | 57 SkAutoTUnref<GrPath> p(fGpu->createPath(path)); |
58 target->stencilPath(p, stroke, path.getFillType()); | 58 target->stencilPath(p, stroke, path.getFillType()); |
59 } | 59 } |
60 | 60 |
61 bool GrStencilAndCoverPathRenderer::onDrawPath(const SkPath& path, | 61 bool GrStencilAndCoverPathRenderer::onDrawPath(const SkPath& path, |
62 const SkStrokeRec& stroke, | 62 const SkStrokeRec& stroke, |
63 GrDrawTarget* target, | 63 GrDrawTarget* target, |
64 bool antiAlias) { | 64 bool antiAlias) { |
65 GrAssert(!antiAlias); | 65 SkASSERT(!antiAlias); |
66 GrAssert(!stroke.isHairlineStyle()); | 66 SkASSERT(!stroke.isHairlineStyle()); |
67 | 67 |
68 GrDrawState* drawState = target->drawState(); | 68 GrDrawState* drawState = target->drawState(); |
69 GrAssert(drawState->getStencil().isDisabled()); | 69 SkASSERT(drawState->getStencil().isDisabled()); |
70 | 70 |
71 SkAutoTUnref<GrPath> p(fGpu->createPath(path)); | 71 SkAutoTUnref<GrPath> p(fGpu->createPath(path)); |
72 | 72 |
73 SkPath::FillType nonInvertedFill = SkPath::ConvertToNonInverseFillType(path.
getFillType()); | 73 SkPath::FillType nonInvertedFill = SkPath::ConvertToNonInverseFillType(path.
getFillType()); |
74 target->stencilPath(p, stroke, nonInvertedFill); | 74 target->stencilPath(p, stroke, nonInvertedFill); |
75 | 75 |
76 // TODO: Use built in cover operation rather than a rect draw. This will req
uire making our | 76 // TODO: Use built in cover operation rather than a rect draw. This will req
uire making our |
77 // fragment shaders be able to eat varyings generated by a matrix. | 77 // fragment shaders be able to eat varyings generated by a matrix. |
78 | 78 |
79 // fill the path, zero out the stencil | 79 // fill the path, zero out the stencil |
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114 avmr.setIdentity(drawState); | 114 avmr.setIdentity(drawState); |
115 bloat = 0; | 115 bloat = 0; |
116 } | 116 } |
117 *drawState->stencil() = kInvertedStencilPass; | 117 *drawState->stencil() = kInvertedStencilPass; |
118 } | 118 } |
119 bounds.outset(bloat, bloat); | 119 bounds.outset(bloat, bloat); |
120 target->drawSimpleRect(bounds, NULL); | 120 target->drawSimpleRect(bounds, NULL); |
121 target->drawState()->stencil()->setDisabled(); | 121 target->drawState()->stencil()->setDisabled(); |
122 return true; | 122 return true; |
123 } | 123 } |
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