flutter_flutter/shell/platform/embedder/embedder_external_texture_gl.cc
Chris Yang 0d59c9ec54
Add onUnregistered callback in 'Texture' and 'FlutterTexture' (#12695)
Texture unregistration is finished on the GPU thread. The FlutterTexture implementation might not know when it is finished which leads to a race condition. Adding this callback so the FlutterTexture is aware of end of the unregistration process.
2019-10-08 12:45:57 -07:00

51 lines
1.5 KiB
C++

// 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.
#include "flutter/shell/platform/embedder/embedder_external_texture_gl.h"
#include "flutter/fml/logging.h"
namespace flutter {
EmbedderExternalTextureGL::EmbedderExternalTextureGL(
int64_t texture_identifier,
ExternalTextureCallback callback)
: Texture(texture_identifier), external_texture_callback_(callback) {
FML_DCHECK(external_texture_callback_);
}
EmbedderExternalTextureGL::~EmbedderExternalTextureGL() = default;
// |flutter::Texture|
void EmbedderExternalTextureGL::Paint(SkCanvas& canvas,
const SkRect& bounds,
bool freeze,
GrContext* context) {
if (auto image = external_texture_callback_(
Id(), //
canvas.getGrContext(), //
SkISize::Make(bounds.width(), bounds.height()) //
)) {
last_image_ = image;
}
if (last_image_) {
canvas.drawImage(last_image_, bounds.x(), bounds.y());
}
}
// |flutter::Texture|
void EmbedderExternalTextureGL::OnGrContextCreated() {}
// |flutter::Texture|
void EmbedderExternalTextureGL::OnGrContextDestroyed() {}
// |flutter::Texture|
void EmbedderExternalTextureGL::MarkNewFrameAvailable() {}
// |flutter::Texture|
void EmbedderExternalTextureGL::OnTextureUnregistered() {}
} // namespace flutter