1 /* 2 * Copyright 2011 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 9 #include "GrPathRendererChain.h" 10 11 #include "GrCaps.h" 12 #include "GrShaderCaps.h" 13 #include "gl/GrGLCaps.h" 14 #include "GrContext.h" 15 #include "GrGpu.h" 16 17 #include "ops/GrAAConvexPathRenderer.h" 18 #include "ops/GrAAHairLinePathRenderer.h" 19 #include "ops/GrAALinearizingConvexPathRenderer.h" 20 #include "ops/GrSmallPathRenderer.h" 21 #include "ops/GrDashLinePathRenderer.h" 22 #include "ops/GrDefaultPathRenderer.h" 23 #include "ops/GrMSAAPathRenderer.h" 24 #include "ops/GrStencilAndCoverPathRenderer.h" 25 #include "ops/GrTessellatingPathRenderer.h" 26 GrPathRendererChain(GrContext * context,const Options & options)27GrPathRendererChain::GrPathRendererChain(GrContext* context, const Options& options) { 28 using GpuPathRenderers = GrContextOptions::GpuPathRenderers; 29 const GrCaps& caps = *context->caps(); 30 if (options.fGpuPathRenderers & GpuPathRenderers::kDashLine) { 31 fChain.push_back(sk_make_sp<GrDashLinePathRenderer>()); 32 } 33 if (options.fGpuPathRenderers & GpuPathRenderers::kStencilAndCover) { 34 sk_sp<GrPathRenderer> pr( 35 GrStencilAndCoverPathRenderer::Create(context->resourceProvider(), caps)); 36 if (pr) { 37 fChain.push_back(std::move(pr)); 38 } 39 } 40 #ifndef SK_BUILD_FOR_ANDROID_FRAMEWORK 41 if (options.fGpuPathRenderers & GpuPathRenderers::kMSAA) { 42 if (caps.sampleShadingSupport()) { 43 fChain.push_back(sk_make_sp<GrMSAAPathRenderer>()); 44 } 45 } 46 #endif 47 if (options.fGpuPathRenderers & GpuPathRenderers::kAAHairline) { 48 fChain.push_back(sk_make_sp<GrAAHairLinePathRenderer>()); 49 } 50 if (options.fGpuPathRenderers & GpuPathRenderers::kAAConvex) { 51 fChain.push_back(sk_make_sp<GrAAConvexPathRenderer>()); 52 } 53 if (options.fGpuPathRenderers & GpuPathRenderers::kAALinearizing) { 54 fChain.push_back(sk_make_sp<GrAALinearizingConvexPathRenderer>()); 55 } 56 if (options.fGpuPathRenderers & GpuPathRenderers::kSmall) { 57 fChain.push_back(sk_make_sp<GrSmallPathRenderer>()); 58 } 59 if (options.fGpuPathRenderers & GpuPathRenderers::kTessellating) { 60 fChain.push_back(sk_make_sp<GrTessellatingPathRenderer>()); 61 } 62 if (options.fGpuPathRenderers & GpuPathRenderers::kDefault) { 63 fChain.push_back(sk_make_sp<GrDefaultPathRenderer>(caps.twoSidedStencilSupport(), 64 caps.stencilWrapOpsSupport())); 65 } 66 } 67 getPathRenderer(const GrPathRenderer::CanDrawPathArgs & args,DrawType drawType,GrPathRenderer::StencilSupport * stencilSupport)68GrPathRenderer* GrPathRendererChain::getPathRenderer( 69 const GrPathRenderer::CanDrawPathArgs& args, 70 DrawType drawType, 71 GrPathRenderer::StencilSupport* stencilSupport) { 72 GR_STATIC_ASSERT(GrPathRenderer::kNoSupport_StencilSupport < 73 GrPathRenderer::kStencilOnly_StencilSupport); 74 GR_STATIC_ASSERT(GrPathRenderer::kStencilOnly_StencilSupport < 75 GrPathRenderer::kNoRestriction_StencilSupport); 76 GrPathRenderer::StencilSupport minStencilSupport; 77 if (DrawType::kStencil == drawType) { 78 minStencilSupport = GrPathRenderer::kStencilOnly_StencilSupport; 79 } else if (DrawType::kStencilAndColor == drawType) { 80 minStencilSupport = GrPathRenderer::kNoRestriction_StencilSupport; 81 } else { 82 minStencilSupport = GrPathRenderer::kNoSupport_StencilSupport; 83 } 84 if (minStencilSupport != GrPathRenderer::kNoSupport_StencilSupport) { 85 // We don't support (and shouldn't need) stenciling of non-fill paths. 86 if (!args.fShape->style().isSimpleFill()) { 87 return nullptr; 88 } 89 } 90 91 for (int i = 0; i < fChain.count(); ++i) { 92 if (fChain[i]->canDrawPath(args)) { 93 if (GrPathRenderer::kNoSupport_StencilSupport != minStencilSupport) { 94 GrPathRenderer::StencilSupport support = fChain[i]->getStencilSupport(*args.fShape); 95 if (support < minStencilSupport) { 96 continue; 97 } else if (stencilSupport) { 98 *stencilSupport = support; 99 } 100 } 101 return fChain[i].get(); 102 } 103 } 104 return nullptr; 105 } 106