content/browser/compositor/gpu_surfaceless_browser_compositor_output_surface.cc

   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 "content/browser/compositor/gpu_surfaceless_browser_compositor_output_surface.h"
   6
   7 #include "cc/output/compositor_frame.h"
   8 #include "content/browser/compositor/buffer_queue.h"
   9 #include "content/browser/compositor/reflector_impl.h"
  10 #include "content/browser/gpu/gpu_surface_tracker.h"
  11 #include "content/common/gpu/client/context_provider_command_buffer.h"
  12 #include "content/common/gpu/client/gl_helper.h"
  13 #include "gpu/GLES2/gl2extchromium.h"
  14 #include "gpu/command_buffer/client/gles2_interface.h"
  15
  16 namespace content {
  17
  18 GpuSurfacelessBrowserCompositorOutputSurface::
  19     GpuSurfacelessBrowserCompositorOutputSurface(
  20         const scoped_refptr<ContextProviderCommandBuffer>& context,
  21         int surface_id,
  22         const scoped_refptr<ui::CompositorVSyncManager>& vsync_manager,
  23         scoped_ptr<cc::OverlayCandidateValidator> overlay_candidate_validator,
  24         unsigned internalformat,
  25         BrowserGpuMemoryBufferManager* gpu_memory_buffer_manager)
  26     : GpuBrowserCompositorOutputSurface(context,
  27                                         vsync_manager,
  28                                         overlay_candidate_validator.Pass()),
  29       internalformat_(internalformat),
  30       gpu_memory_buffer_manager_(gpu_memory_buffer_manager) {
  31   capabilities_.uses_default_gl_framebuffer = false;
  32   capabilities_.flipped_output_surface = true;
  33
  34   gl_helper_.reset(new GLHelper(context_provider_->ContextGL(),
  35                                 context_provider_->ContextSupport()));
  36   output_surface_.reset(
  37       new BufferQueue(context_provider_, internalformat_, gl_helper_.get(),
  38                       gpu_memory_buffer_manager_, surface_id));
  39   output_surface_->Initialize();
  40 }
  41
  42 GpuSurfacelessBrowserCompositorOutputSurface::
  43     ~GpuSurfacelessBrowserCompositorOutputSurface() {
  44 }
  45
  46 void GpuSurfacelessBrowserCompositorOutputSurface::SwapBuffers(
  47     cc::CompositorFrame* frame) {
  48   DCHECK(output_surface_);
  49
  50   GLuint texture = output_surface_->current_texture_id();
  51   output_surface_->SwapBuffers(frame->gl_frame_data->sub_buffer_rect);
  52   const gfx::Size& size = frame->gl_frame_data->size;
  53   context_provider_->ContextGL()->ScheduleOverlayPlaneCHROMIUM(
  54       0,
  55       GL_OVERLAY_TRANSFORM_NONE_CHROMIUM,
  56       texture,
  57       0,
  58       0,
  59       size.width(),
  60       size.height(),
  61       0,
  62       0,
  63       1.0f,
  64       1.0f);
  65   GpuBrowserCompositorOutputSurface::SwapBuffers(frame);
  66 }
  67
  68 void GpuSurfacelessBrowserCompositorOutputSurface::OnSwapBuffersComplete() {
  69   DCHECK(output_surface_);
  70   output_surface_->PageFlipComplete();
  71   GpuBrowserCompositorOutputSurface::OnSwapBuffersComplete();
  72 }
  73
  74 void GpuSurfacelessBrowserCompositorOutputSurface::BindFramebuffer() {
  75   DCHECK(output_surface_);
  76   output_surface_->BindFramebuffer();
  77 }
  78
  79 void GpuSurfacelessBrowserCompositorOutputSurface::Reshape(
  80     const gfx::Size& size,
  81     float scale_factor) {
  82   GpuBrowserCompositorOutputSurface::Reshape(size, scale_factor);
  83   DCHECK(output_surface_);
  84   output_surface_->Reshape(SurfaceSize(), scale_factor);
  85 }
  86
  87 }  // namespace content