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This is part of a larger effort to expose the difference between GrDirectContext, which runs on the GPU thread and can directly perform operations like uploading textures, and GrRecordingContext, which can only queue up work to be delivered to the GrDirectContext later.
78 lines
2.2 KiB
C++
78 lines
2.2 KiB
C++
// Copyright 2013 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef SHELL_GPU_GPU_SURFACE_GL_H_
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#define SHELL_GPU_GPU_SURFACE_GL_H_
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#include <functional>
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#include <memory>
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#include "flutter/flow/embedded_views.h"
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#include "flutter/flow/gl_context_switch.h"
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#include "flutter/flow/surface.h"
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#include "flutter/fml/macros.h"
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#include "flutter/fml/memory/weak_ptr.h"
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#include "flutter/shell/gpu/gpu_surface_gl_delegate.h"
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#include "third_party/skia/include/gpu/GrDirectContext.h"
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namespace flutter {
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class GPUSurfaceGL : public Surface {
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public:
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GPUSurfaceGL(GPUSurfaceGLDelegate* delegate, bool render_to_surface);
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// Creates a new GL surface reusing an existing GrDirectContext.
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GPUSurfaceGL(sk_sp<GrDirectContext> gr_context,
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GPUSurfaceGLDelegate* delegate,
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bool render_to_surface);
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// |Surface|
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~GPUSurfaceGL() override;
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// |Surface|
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bool IsValid() override;
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// |Surface|
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std::unique_ptr<SurfaceFrame> AcquireFrame(const SkISize& size) override;
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// |Surface|
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SkMatrix GetRootTransformation() const override;
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// |Surface|
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GrDirectContext* GetContext() override;
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// |Surface|
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flutter::ExternalViewEmbedder* GetExternalViewEmbedder() override;
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// |Surface|
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std::unique_ptr<GLContextResult> MakeRenderContextCurrent() override;
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private:
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GPUSurfaceGLDelegate* delegate_;
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sk_sp<GrDirectContext> context_;
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sk_sp<SkSurface> onscreen_surface_;
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bool context_owner_;
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// TODO(38466): Refactor GPU surface APIs take into account the fact that an
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// external view embedder may want to render to the root surface. This is a
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// hack to make avoid allocating resources for the root surface when an
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// external view embedder is present.
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const bool render_to_surface_;
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bool valid_ = false;
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fml::TaskRunnerAffineWeakPtrFactory<GPUSurfaceGL> weak_factory_;
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bool CreateOrUpdateSurfaces(const SkISize& size);
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sk_sp<SkSurface> AcquireRenderSurface(
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const SkISize& untransformed_size,
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const SkMatrix& root_surface_transformation);
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bool PresentSurface(SkCanvas* canvas);
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FML_DISALLOW_COPY_AND_ASSIGN(GPUSurfaceGL);
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};
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} // namespace flutter
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#endif // SHELL_GPU_GPU_SURFACE_GL_H_
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