flutter_flutter/engine/src/flutter/shell/gpu/gpu_surface_software.cc
Chris Bracken 6f144d0bde Revert "Roll Fuchsia buildtools to 85907c59e97527d79bbfdfd849d8e85c24959cc5 (#4331)" (flutter/engine#4340)
With the update to HEAD of the Fuchsia buildtools repo, the new clang
toolchain picked up caused link-time breakage in android x86_64
libFlutter.so builds.

Sample log:
https://build.chromium.org/p/client.flutter/builders/Linux%20Engine/builds/1974/steps/build%20android_debug_x64/logs/stdio

Sample failure:
FAILED: libflutter.so libflutter.so.TOC lib.stripped/libflutter.so
../../third_party/android_tools/ndk/toolchains/x86_64-4.9/prebuilt/linux-x86_64/lib/gcc/x86_64-linux-android/4.9.x/../../../../x86_64-linux-android/bin/ld.gold: error: obj/flutter/shell/platform/android/libflutter/android_context_gl.o: unsupported reloc 42 against global symbol std::__ndk1::num_put<char, std::__ndk1::ostreambuf_iterator<char, std::__ndk1::char_traits<char> > >::id

This reverts commit fecc7aa281821e01037089846744b5331e3cbd22.
2017-11-08 16:48:00 -08:00

76 lines
2.1 KiB
C++

// Copyright 2017 The Chromium 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/gpu/gpu_surface_software.h"
#include <memory>
#include "lib/fxl/logging.h"
namespace shell {
GPUSurfaceSoftware::GPUSurfaceSoftware(GPUSurfaceSoftwareDelegate* delegate)
: delegate_(delegate), weak_factory_(this) {}
GPUSurfaceSoftware::~GPUSurfaceSoftware() = default;
bool GPUSurfaceSoftware::IsValid() {
return delegate_ != nullptr;
}
bool GPUSurfaceSoftware::SupportsScaling() const {
return true;
}
std::unique_ptr<SurfaceFrame> GPUSurfaceSoftware::AcquireFrame(
const SkISize& logical_size) {
if (!IsValid()) {
return nullptr;
}
// Check if we need to support surface scaling.
const auto scale = SupportsScaling() ? GetScale() : 1.0;
const auto size = SkISize::Make(logical_size.width() * scale,
logical_size.height() * scale);
sk_sp<SkSurface> backing_store = delegate_->AcquireBackingStore(size);
if (backing_store == nullptr) {
return nullptr;
}
if (size != SkISize::Make(backing_store->width(), backing_store->height())) {
return nullptr;
}
// If the surface has been scaled, we need to apply the inverse scaling to the
// underlying canvas so that coordinates are mapped to the same spot
// irrespective of surface scaling.
SkCanvas* canvas = backing_store->getCanvas();
canvas->resetMatrix();
canvas->scale(scale, scale);
SurfaceFrame::SubmitCallback
on_submit = [self = weak_factory_.GetWeakPtr()](
const SurfaceFrame& surface_frame, SkCanvas* canvas)
->bool {
// If the surface itself went away, there is nothing more to do.
if (!self || !self->IsValid() || canvas == nullptr) {
return false;
}
canvas->flush();
return self->delegate_->PresentBackingStore(surface_frame.SkiaSurface());
};
return std::make_unique<SurfaceFrame>(backing_store, on_submit);
}
GrContext* GPUSurfaceSoftware::GetContext() {
// The is no GrContext associated with a software surface.
return nullptr;
}
} // namespace shell