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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "ui/ozone/platform/dri/dri_surface.h" | |
| 6 | |
| 7 #include "base/logging.h" | |
| 8 #include "base/message_loop/message_loop.h" | |
| 9 #include "third_party/skia/include/core/SkCanvas.h" | |
| 10 #include "third_party/skia/include/core/SkSurface.h" | |
| 11 #include "ui/gfx/geometry/rect.h" | |
| 12 #include "ui/gfx/skia_util.h" | |
| 13 #include "ui/ozone/platform/dri/dri_buffer.h" | |
| 14 #include "ui/ozone/platform/dri/dri_vsync_provider.h" | |
| 15 #include "ui/ozone/platform/dri/dri_window_delegate_impl.h" | |
| 16 #include "ui/ozone/platform/dri/dri_wrapper.h" | |
| 17 #include "ui/ozone/platform/dri/hardware_display_controller.h" | |
| 18 | |
| 19 namespace ui { | |
| 20 | |
| 21 namespace { | |
| 22 | |
| 23 scoped_refptr<DriBuffer> AllocateBuffer(DriWrapper* dri, | |
| 24 const gfx::Size& size) { | |
| 25 scoped_refptr<DriBuffer> buffer(new DriBuffer(dri)); | |
| 26 SkImageInfo info = SkImageInfo::MakeN32Premul(size.width(), size.height()); | |
| 27 | |
| 28 bool initialized = buffer->Initialize(info); | |
| 29 DCHECK(initialized) << "Failed to create drm buffer."; | |
| 30 | |
| 31 return buffer; | |
| 32 } | |
| 33 | |
| 34 } // namespace | |
| 35 | |
| 36 DriSurface::DriSurface(DriWindowDelegate* window_delegate, DriWrapper* dri) | |
| 37 : window_delegate_(window_delegate), | |
| 38 dri_(dri), | |
| 39 buffers_(), | |
| 40 front_buffer_(0) { | |
| 41 } | |
| 42 | |
| 43 DriSurface::~DriSurface() { | |
| 44 } | |
| 45 | |
| 46 skia::RefPtr<SkCanvas> DriSurface::GetCanvas() { | |
| 47 return skia::SharePtr(surface_->getCanvas()); | |
| 48 } | |
| 49 | |
| 50 void DriSurface::ResizeCanvas(const gfx::Size& viewport_size) { | |
| 51 SkImageInfo info = SkImageInfo::MakeN32( | |
| 52 viewport_size.width(), viewport_size.height(), kOpaque_SkAlphaType); | |
| 53 surface_ = skia::AdoptRef(SkSurface::NewRaster(info)); | |
| 54 | |
| 55 HardwareDisplayController* controller = window_delegate_->GetController(); | |
| 56 if (!controller) | |
| 57 return; | |
| 58 | |
| 59 // For the display buffers use the mode size since a |viewport_size| smaller | |
| 60 // than the display size will not scanout. | |
| 61 for (size_t i = 0; i < arraysize(buffers_); ++i) | |
| 62 buffers_[i] = AllocateBuffer(dri_, controller->GetModeSize()); | |
| 63 } | |
| 64 | |
| 65 void DriSurface::PresentCanvas(const gfx::Rect& damage) { | |
| 66 DCHECK(base::MessageLoopForUI::IsCurrent()); | |
| 67 DCHECK(buffers_[front_buffer_ ^ 1].get()); | |
| 68 | |
| 69 HardwareDisplayController* controller = window_delegate_->GetController(); | |
| 70 if (!controller) | |
| 71 return; | |
| 72 | |
| 73 controller->QueueOverlayPlane(OverlayPlane(buffers_[front_buffer_ ^ 1])); | |
| 74 | |
| 75 UpdateNativeSurface(damage); | |
| 76 controller->SchedulePageFlip(); | |
| 77 controller->WaitForPageFlipEvent(); | |
| 78 | |
| 79 // Update our front buffer pointer. | |
| 80 front_buffer_ ^= 1; | |
| 81 } | |
| 82 | |
| 83 scoped_ptr<gfx::VSyncProvider> DriSurface::CreateVSyncProvider() { | |
| 84 return scoped_ptr<gfx::VSyncProvider>(new DriVSyncProvider(window_delegate_)); | |
| 85 } | |
| 86 | |
| 87 void DriSurface::UpdateNativeSurface(const gfx::Rect& damage) { | |
| 88 SkCanvas* canvas = buffers_[front_buffer_ ^ 1]->GetCanvas(); | |
| 89 | |
| 90 // The DriSurface is double buffered, so the current back buffer is | |
| 91 // missing the previous update. Expand damage region. | |
| 92 SkRect real_damage = RectToSkRect(UnionRects(damage, last_damage_)); | |
| 93 | |
| 94 // Copy damage region. | |
| 95 skia::RefPtr<SkImage> image = skia::AdoptRef(surface_->newImageSnapshot()); | |
| 96 canvas->drawImageRect(image.get(), &real_damage, real_damage, NULL); | |
| 97 | |
| 98 last_damage_ = damage; | |
| 99 } | |
| 100 | |
| 101 } // namespace ui | |
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