| /* |
| * Copyright 2011 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef GrPathRendererChain_DEFINED |
| #define GrPathRendererChain_DEFINED |
| |
| #include "src/gpu/GrPathRenderer.h" |
| |
| #include "include/core/SkTypes.h" |
| #include "include/private/GrTypesPriv.h" |
| #include "include/private/SkNoncopyable.h" |
| #include "include/private/SkTArray.h" |
| |
| class GrTessellationPathRenderer; |
| |
| /** |
| * Keeps track of an ordered list of path renderers. When a path needs to be |
| * drawn this list is scanned to find the most preferred renderer. To add your |
| * path renderer to the list implement the GrPathRenderer::AddPathRenderers |
| * function. |
| */ |
| class GrPathRendererChain : public SkNoncopyable { |
| public: |
| struct Options { |
| bool fAllowPathMaskCaching = false; |
| GpuPathRenderers fGpuPathRenderers = GpuPathRenderers::kDefault; |
| }; |
| GrPathRendererChain(GrRecordingContext* context, const Options&); |
| |
| /** Documents how the caller plans to use a GrPathRenderer to draw a path. It affects the PR |
| returned by getPathRenderer */ |
| enum class DrawType { |
| kColor, // draw to the color buffer, no AA |
| kStencil, // draw just to the stencil buffer |
| kStencilAndColor, // draw the stencil and color buffer, no AA |
| }; |
| |
| /** Returns a GrPathRenderer compatible with the request if one is available. If the caller |
| is drawing the path to the stencil buffer then stencilSupport can be used to determine |
| whether the path can be rendered with arbitrary stencil rules or not. See comments on |
| StencilSupport in GrPathRenderer.h. */ |
| GrPathRenderer* getPathRenderer(const GrPathRenderer::CanDrawPathArgs& args, |
| DrawType drawType, |
| GrPathRenderer::StencilSupport* stencilSupport); |
| |
| /** Returns a direct pointer to the tessellation path renderer, or null if it is not in the |
| chain. */ |
| GrTessellationPathRenderer* getTessellationPathRenderer() { |
| return fTessellationPathRenderer; |
| } |
| |
| private: |
| enum { |
| kPreAllocCount = 8, |
| }; |
| SkSTArray<kPreAllocCount, sk_sp<GrPathRenderer>> fChain; |
| GrTessellationPathRenderer* fTessellationPathRenderer = nullptr; |
| }; |
| |
| #endif |