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// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef SHELL_GPU_GPU_SURFACE_GL_SKIA_H_
#define SHELL_GPU_GPU_SURFACE_GL_SKIA_H_
#include <functional>
#include <memory>
#include "flutter/common/graphics/gl_context_switch.h"
#include "flutter/flow/embedded_views.h"
#include "flutter/flow/surface.h"
#include "flutter/fml/macros.h"
#include "flutter/fml/memory/weak_ptr.h"
#include "flutter/shell/gpu/gpu_surface_gl_delegate.h"
#include "third_party/skia/include/gpu/GrDirectContext.h"
namespace flutter {
class GPUSurfaceGLSkia : public Surface {
public:
static sk_sp<GrDirectContext> MakeGLContext(GPUSurfaceGLDelegate* delegate);
GPUSurfaceGLSkia(GPUSurfaceGLDelegate* delegate, bool render_to_surface);
// Creates a new GL surface reusing an existing GrDirectContext.
GPUSurfaceGLSkia(const sk_sp<GrDirectContext>& gr_context,
GPUSurfaceGLDelegate* delegate,
bool render_to_surface);
// |Surface|
~GPUSurfaceGLSkia() override;
// |Surface|
bool IsValid() override;
// |Surface|
std::unique_ptr<SurfaceFrame> AcquireFrame(const SkISize& size) override;
// |Surface|
SkMatrix GetRootTransformation() const override;
// |Surface|
GrDirectContext* GetContext() override;
// |Surface|
std::unique_ptr<GLContextResult> MakeRenderContextCurrent() override;
// |Surface|
bool ClearRenderContext() override;
// |Surface|
bool AllowsDrawingWhenGpuDisabled() const override;
private:
bool CreateOrUpdateSurfaces(const SkISize& size);
sk_sp<SkSurface> AcquireRenderSurface(
const SkISize& untransformed_size,
const SkMatrix& root_surface_transformation);
bool PresentSurface(const SurfaceFrame& frame, SkCanvas* canvas);
GPUSurfaceGLDelegate* delegate_;
sk_sp<GrDirectContext> context_;
sk_sp<SkSurface> onscreen_surface_;
/// FBO backing the current `onscreen_surface_`.
uint32_t fbo_id_ = 0;
// The current FBO's existing damage, as tracked by the GPU surface, delegates
// still have an option of overriding this damage with their own in
// `GLContextFrameBufferInfo`.
std::optional<SkIRect> existing_damage_ = std::nullopt;
bool context_owner_ = false;
// TODO(38466): Refactor GPU surface APIs take into account the fact that an
// external view embedder may want to render to the root surface. This is a
// hack to make avoid allocating resources for the root surface when an
// external view embedder is present.
const bool render_to_surface_ = true;
bool valid_ = false;
// WeakPtrFactory must be the last member.
fml::TaskRunnerAffineWeakPtrFactory<GPUSurfaceGLSkia> weak_factory_;
FML_DISALLOW_COPY_AND_ASSIGN(GPUSurfaceGLSkia);
};
} // namespace flutter
#endif // SHELL_GPU_GPU_SURFACE_GL_SKIA_H_