| |
| /* |
| * Copyright 2011 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| |
| #include "GrPathRendererChain.h" |
| |
| #include "GrContext.h" |
| #include "GrDefaultPathRenderer.h" |
| #include "GrGpu.h" |
| |
| SK_DEFINE_INST_COUNT(GrPathRendererChain) |
| |
| GrPathRendererChain::GrPathRendererChain(GrContext* context) |
| : fInit(false) |
| , fOwner(context) { |
| } |
| |
| GrPathRendererChain::~GrPathRendererChain() { |
| for (int i = 0; i < fChain.count(); ++i) { |
| fChain[i]->unref(); |
| } |
| } |
| |
| GrPathRenderer* GrPathRendererChain::addPathRenderer(GrPathRenderer* pr) { |
| fChain.push_back() = pr; |
| pr->ref(); |
| return pr; |
| } |
| |
| GrPathRenderer* GrPathRendererChain::getPathRenderer(const SkPath& path, |
| const SkStrokeRec& stroke, |
| const GrDrawTarget* target, |
| DrawType drawType, |
| StencilSupport* stencilSupport) { |
| if (!fInit) { |
| this->init(); |
| } |
| bool antiAlias = (kColorAntiAlias_DrawType == drawType || |
| kStencilAndColorAntiAlias_DrawType == drawType); |
| |
| GR_STATIC_ASSERT(GrPathRenderer::kNoSupport_StencilSupport < |
| GrPathRenderer::kStencilOnly_StencilSupport); |
| GR_STATIC_ASSERT(GrPathRenderer::kStencilOnly_StencilSupport < |
| GrPathRenderer::kNoRestriction_StencilSupport); |
| GrPathRenderer::StencilSupport minStencilSupport; |
| if (kStencilOnly_DrawType == drawType) { |
| minStencilSupport = GrPathRenderer::kStencilOnly_StencilSupport; |
| } else if (kStencilAndColor_DrawType == drawType || |
| kStencilAndColorAntiAlias_DrawType == drawType) { |
| minStencilSupport = GrPathRenderer::kNoRestriction_StencilSupport; |
| } else { |
| minStencilSupport = GrPathRenderer::kNoSupport_StencilSupport; |
| } |
| |
| |
| for (int i = 0; i < fChain.count(); ++i) { |
| if (fChain[i]->canDrawPath(path, stroke, target, antiAlias)) { |
| if (GrPathRenderer::kNoSupport_StencilSupport != minStencilSupport) { |
| GrPathRenderer::StencilSupport support = fChain[i]->getStencilSupport(path, |
| stroke, |
| target); |
| if (support < minStencilSupport) { |
| continue; |
| } else if (NULL != stencilSupport) { |
| *stencilSupport = support; |
| } |
| } |
| return fChain[i]; |
| } |
| } |
| return NULL; |
| } |
| |
| void GrPathRendererChain::init() { |
| GrAssert(!fInit); |
| GrGpu* gpu = fOwner->getGpu(); |
| bool twoSided = gpu->getCaps().twoSidedStencilSupport(); |
| bool wrapOp = gpu->getCaps().stencilWrapOpsSupport(); |
| GrPathRenderer::AddPathRenderers(fOwner, this); |
| this->addPathRenderer(SkNEW_ARGS(GrDefaultPathRenderer, |
| (twoSided, wrapOp)))->unref(); |
| fInit = true; |
| } |