| // Copyright 2014 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 "ui/ozone/platform/drm/gpu/drm_surface.h" |
| |
| #include "base/bind_helpers.h" |
| #include "base/logging.h" |
| #include "base/message_loop/message_loop.h" |
| #include "third_party/skia/include/core/SkCanvas.h" |
| #include "third_party/skia/include/core/SkSurface.h" |
| #include "ui/gfx/geometry/rect.h" |
| #include "ui/gfx/skia_util.h" |
| #include "ui/ozone/platform/drm/gpu/drm_buffer.h" |
| #include "ui/ozone/platform/drm/gpu/drm_device.h" |
| #include "ui/ozone/platform/drm/gpu/drm_vsync_provider.h" |
| #include "ui/ozone/platform/drm/gpu/drm_window.h" |
| #include "ui/ozone/platform/drm/gpu/hardware_display_controller.h" |
| |
| namespace ui { |
| |
| namespace { |
| |
| scoped_refptr<DrmBuffer> AllocateBuffer(const scoped_refptr<DrmDevice>& drm, |
| const gfx::Size& size) { |
| scoped_refptr<DrmBuffer> buffer(new DrmBuffer(drm)); |
| SkImageInfo info = SkImageInfo::MakeN32Premul(size.width(), size.height()); |
| |
| bool initialized = |
| buffer->Initialize(info, true /* should_register_framebuffer */); |
| DCHECK(initialized) << "Failed to create drm buffer."; |
| |
| return buffer; |
| } |
| |
| } // namespace |
| |
| DrmSurface::DrmSurface(DrmWindow* window) |
| : window_(window), weak_ptr_factory_(this) { |
| } |
| |
| DrmSurface::~DrmSurface() { |
| } |
| |
| skia::RefPtr<SkSurface> DrmSurface::GetSurface() { |
| return surface_; |
| } |
| |
| void DrmSurface::ResizeCanvas(const gfx::Size& viewport_size) { |
| SkImageInfo info = SkImageInfo::MakeN32( |
| viewport_size.width(), viewport_size.height(), kOpaque_SkAlphaType); |
| surface_ = skia::AdoptRef(SkSurface::NewRaster(info)); |
| |
| HardwareDisplayController* controller = window_->GetController(); |
| if (!controller) |
| return; |
| |
| // For the display buffers use the mode size since a |viewport_size| smaller |
| // than the display size will not scanout. |
| front_buffer_ = AllocateBuffer(controller->GetAllocationDrmDevice(), |
| controller->GetModeSize()); |
| back_buffer_ = AllocateBuffer(controller->GetAllocationDrmDevice(), |
| controller->GetModeSize()); |
| } |
| |
| void DrmSurface::PresentCanvas(const gfx::Rect& damage) { |
| DCHECK(base::MessageLoopForUI::IsCurrent()); |
| |
| // Create a snapshot of the requested drawing. If we get here again before |
| // presenting, just add the additional damage. |
| pending_image_damage_.Union(damage); |
| pending_image_ = skia::AdoptRef(surface_->newImageSnapshot()); |
| |
| if (!pending_pageflip_) |
| SchedulePageFlip(); |
| } |
| |
| scoped_ptr<gfx::VSyncProvider> DrmSurface::CreateVSyncProvider() { |
| return make_scoped_ptr(new DrmVSyncProvider(window_)); |
| } |
| |
| void DrmSurface::SchedulePageFlip() { |
| DCHECK(back_buffer_); |
| SkCanvas* canvas = back_buffer_->GetCanvas(); |
| |
| // The DrmSurface is double buffered, so the current back buffer is |
| // missing the previous update. Expand damage region. |
| SkRect real_damage = |
| RectToSkRect(UnionRects(pending_image_damage_, last_damage_)); |
| |
| // Copy damage region. |
| canvas->drawImageRect(pending_image_.get(), &real_damage, real_damage, NULL); |
| last_damage_ = pending_image_damage_; |
| |
| pending_image_ = nullptr; |
| pending_image_damage_ = gfx::Rect(); |
| |
| window_->QueueOverlayPlane(OverlayPlane(back_buffer_)); |
| |
| // Update our front buffer pointer. |
| std::swap(front_buffer_, back_buffer_); |
| // First set the pending flag otherwise there could be a re-entrancy issue if |
| // the callback is executed synchronously. |
| pending_pageflip_ = true; |
| if (!window_->SchedulePageFlip(false /* is_sync */, |
| base::Bind(&DrmSurface::OnPageFlip, |
| weak_ptr_factory_.GetWeakPtr()))) { |
| pending_pageflip_ = false; |
| } |
| } |
| |
| void DrmSurface::OnPageFlip(gfx::SwapResult result) { |
| pending_pageflip_ = false; |
| if (!pending_image_) |
| return; |
| |
| SchedulePageFlip(); |
| } |
| |
| } // namespace ui |