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This is needed to avoid jank when resizing an embedded Android view. See https://github.com/flutter/flutter/issues/19572#issuecomment-410400724
59 lines
1.4 KiB
C++
59 lines
1.4 KiB
C++
// Copyright 2017 The Chromium 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 FLUTTER_SHELL_PLATFORM_ANDROID_EXTERNAL_TEXTURE_GL_H_
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#define FLUTTER_SHELL_PLATFORM_ANDROID_EXTERNAL_TEXTURE_GL_H_
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#include <GLES/gl.h>
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#include "flutter/flow/texture.h"
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#include "flutter/fml/platform/android/jni_weak_ref.h"
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namespace shell {
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class AndroidExternalTextureGL : public flow::Texture {
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public:
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AndroidExternalTextureGL(
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int64_t id,
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const fml::jni::JavaObjectWeakGlobalRef& surfaceTexture);
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~AndroidExternalTextureGL() override;
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virtual void Paint(SkCanvas& canvas,
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const SkRect& bounds,
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bool freeze) override;
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virtual void OnGrContextCreated() override;
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virtual void OnGrContextDestroyed() override;
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void MarkNewFrameAvailable() override;
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private:
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void Attach(jint textureName);
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void Update();
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void Detach();
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void UpdateTransform();
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enum class AttachmentState { uninitialized, attached, detached };
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fml::jni::JavaObjectWeakGlobalRef surface_texture_;
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AttachmentState state_ = AttachmentState::uninitialized;
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bool new_frame_ready_ = false;
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GLuint texture_name_ = 0;
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SkMatrix transform;
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FML_DISALLOW_COPY_AND_ASSIGN(AndroidExternalTextureGL);
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};
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} // namespace shell
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#endif // FLUTTER_SHELL_PLATFORM_ANDROID_EXTERNAL_TEXTURE_GL_H_
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