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0a7155d4e1
This retains gamut correction (adjusting colors for screens with different capabilities), but does all blending and interpolation with sRGB-encoded values. That matches the behavior expected by most users, as well as the behavior of nearly all other systems. It also greatly simplifies the EGL code. A future Skia change will make this behavior more of a first-class citizen, so some of these implementation details will change again, but the behavior will not. The bulk of this change (elimination of complication from the GL surface code) is permanent - it's just the SkColorSpaceXformCanvas that will be replaced.
86 lines
1.9 KiB
C++
86 lines
1.9 KiB
C++
// Copyright 2016 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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#include "flutter/shell/common/surface.h"
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#include "lib/fxl/logging.h"
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#include "third_party/skia/include/core/SkColorSpaceXformCanvas.h"
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#include "third_party/skia/include/core/SkSurface.h"
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namespace shell {
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SurfaceFrame::SurfaceFrame(sk_sp<SkSurface> surface,
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SubmitCallback submit_callback)
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: submitted_(false), surface_(surface), submit_callback_(submit_callback) {
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FXL_DCHECK(submit_callback_);
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if (surface_) {
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xform_canvas_ = SkCreateColorSpaceXformCanvas(surface_->getCanvas(),
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SkColorSpace::MakeSRGB());
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}
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}
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SurfaceFrame::~SurfaceFrame() {
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if (submit_callback_) {
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// Dropping without a Submit.
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submit_callback_(*this, nullptr);
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}
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}
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bool SurfaceFrame::Submit() {
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if (submitted_) {
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return false;
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}
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submitted_ = PerformSubmit();
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return submitted_;
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}
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SkCanvas* SurfaceFrame::SkiaCanvas() {
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if (xform_canvas_) {
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return xform_canvas_.get();
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}
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return surface_ != nullptr ? surface_->getCanvas() : nullptr;
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}
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sk_sp<SkSurface> SurfaceFrame::SkiaSurface() const {
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return surface_;
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}
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bool SurfaceFrame::PerformSubmit() {
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if (submit_callback_ == nullptr) {
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return false;
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}
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if (submit_callback_(*this, SkiaCanvas())) {
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return true;
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}
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return false;
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}
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Surface::Surface() : scale_(1.0) {}
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Surface::~Surface() = default;
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bool Surface::SupportsScaling() const {
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return false;
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}
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double Surface::GetScale() const {
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return scale_;
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}
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void Surface::SetScale(double scale) {
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static constexpr double kMaxScale = 1.0;
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static constexpr double kMinScale = 0.25;
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if (scale > kMaxScale) {
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scale = kMaxScale;
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} else if (scale < kMinScale) {
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scale = kMinScale;
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}
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scale_ = scale;
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}
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} // namespace shell
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