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comparison: gfx/skia/trunk/src/gpu/GrPathRendererChain.cpp
gfx/skia/trunk/src/gpu/GrPathRendererChain.cpp
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| -1:000000000000 | 0:bd4ed8133fee |
|---|---|
| 1 | |
| 2 /* | |
| 3 * Copyright 2011 Google Inc. | |
| 4 * | |
| 5 * Use of this source code is governed by a BSD-style license that can be | |
| 6 * found in the LICENSE file. | |
| 7 */ | |
| 8 | |
| 9 | |
| 10 #include "GrPathRendererChain.h" | |
| 11 | |
| 12 #include "GrContext.h" | |
| 13 #include "GrDefaultPathRenderer.h" | |
| 14 #include "GrDrawTargetCaps.h" | |
| 15 #include "GrGpu.h" | |
| 16 | |
| 17 GrPathRendererChain::GrPathRendererChain(GrContext* context) | |
| 18 : fInit(false) | |
| 19 , fOwner(context) { | |
| 20 } | |
| 21 | |
| 22 GrPathRendererChain::~GrPathRendererChain() { | |
| 23 for (int i = 0; i < fChain.count(); ++i) { | |
| 24 fChain[i]->unref(); | |
| 25 } | |
| 26 } | |
| 27 | |
| 28 GrPathRenderer* GrPathRendererChain::addPathRenderer(GrPathRenderer* pr) { | |
| 29 fChain.push_back() = pr; | |
| 30 pr->ref(); | |
| 31 return pr; | |
| 32 } | |
| 33 | |
| 34 GrPathRenderer* GrPathRendererChain::getPathRenderer(const SkPath& path, | |
| 35 const SkStrokeRec& stroke, | |
| 36 const GrDrawTarget* target, | |
| 37 DrawType drawType, | |
| 38 StencilSupport* stencilSupport) { | |
| 39 if (!fInit) { | |
| 40 this->init(); | |
| 41 } | |
| 42 bool antiAlias = (kColorAntiAlias_DrawType == drawType || | |
| 43 kStencilAndColorAntiAlias_DrawType == drawType); | |
| 44 | |
| 45 GR_STATIC_ASSERT(GrPathRenderer::kNoSupport_StencilSupport < | |
| 46 GrPathRenderer::kStencilOnly_StencilSupport); | |
| 47 GR_STATIC_ASSERT(GrPathRenderer::kStencilOnly_StencilSupport < | |
| 48 GrPathRenderer::kNoRestriction_StencilSupport); | |
| 49 GrPathRenderer::StencilSupport minStencilSupport; | |
| 50 if (kStencilOnly_DrawType == drawType) { | |
| 51 minStencilSupport = GrPathRenderer::kStencilOnly_StencilSupport; | |
| 52 } else if (kStencilAndColor_DrawType == drawType || | |
| 53 kStencilAndColorAntiAlias_DrawType == drawType) { | |
| 54 minStencilSupport = GrPathRenderer::kNoRestriction_StencilSupport; | |
| 55 } else { | |
| 56 minStencilSupport = GrPathRenderer::kNoSupport_StencilSupport; | |
| 57 } | |
| 58 | |
| 59 | |
| 60 for (int i = 0; i < fChain.count(); ++i) { | |
| 61 if (fChain[i]->canDrawPath(path, stroke, target, antiAlias)) { | |
| 62 if (GrPathRenderer::kNoSupport_StencilSupport != minStencilSupport) { | |
| 63 GrPathRenderer::StencilSupport support = fChain[i]->getStencilSupport(path, | |
| 64 stroke, | |
| 65 target); | |
| 66 if (support < minStencilSupport) { | |
| 67 continue; | |
| 68 } else if (NULL != stencilSupport) { | |
| 69 *stencilSupport = support; | |
| 70 } | |
| 71 } | |
| 72 return fChain[i]; | |
| 73 } | |
| 74 } | |
| 75 return NULL; | |
| 76 } | |
| 77 | |
| 78 void GrPathRendererChain::init() { | |
| 79 SkASSERT(!fInit); | |
| 80 GrGpu* gpu = fOwner->getGpu(); | |
| 81 bool twoSided = gpu->caps()->twoSidedStencilSupport(); | |
| 82 bool wrapOp = gpu->caps()->stencilWrapOpsSupport(); | |
| 83 GrPathRenderer::AddPathRenderers(fOwner, this); | |
| 84 this->addPathRenderer(SkNEW_ARGS(GrDefaultPathRenderer, | |
| 85 (twoSided, wrapOp)))->unref(); | |
| 86 fInit = true; | |
| 87 } |
