| /* |
| * 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 PathRendererChain_DEFINED |
| #define PathRendererChain_DEFINED |
| |
| #include "src/gpu/ganesh/PathRenderer.h" |
| |
| #include "include/core/SkTypes.h" |
| #include "include/private/base/SkNoncopyable.h" |
| #include "include/private/base/SkTArray.h" |
| #include "include/private/gpu/ganesh/GrTypesPriv.h" |
| |
| namespace skgpu::ganesh { |
| |
| class AtlasPathRenderer; |
| |
| /** |
| * 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 PathRendererChain : public SkNoncopyable { |
| public: |
| struct Options { |
| bool fAllowPathMaskCaching = false; |
| GpuPathRenderers fGpuPathRenderers = GpuPathRenderers::kDefault; |
| }; |
| PathRendererChain(GrRecordingContext*, 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. */ |
| PathRenderer* getPathRenderer(const PathRenderer::CanDrawPathArgs&, |
| DrawType, |
| PathRenderer::StencilSupport*); |
| |
| /** Returns a direct pointer to the atlas path renderer, or null if it is not in the |
| chain. */ |
| skgpu::ganesh::AtlasPathRenderer* getAtlasPathRenderer() { return fAtlasPathRenderer; } |
| |
| /** Returns a direct pointer to the tessellation path renderer, or null if it is not in the |
| chain. */ |
| PathRenderer* getTessellationPathRenderer() { |
| return fTessellationPathRenderer; |
| } |
| |
| private: |
| enum { |
| kPreAllocCount = 8, |
| }; |
| skia_private::STArray<kPreAllocCount, sk_sp<PathRenderer>> fChain; |
| AtlasPathRenderer* fAtlasPathRenderer = nullptr; |
| PathRenderer* fTessellationPathRenderer = nullptr; |
| }; |
| |
| } // namespace skgpu::ganesh |
| |
| #endif // PathRendererChain_DEFINED |