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         IDMap<BrowserCompositorOutputSurface>* output_surface_map,
  23         const scoped_refptr<ui::CompositorVSyncManager>& vsync_manager,
  24         scoped_ptr<cc::OverlayCandidateValidator> overlay_candidate_validator,
  25         unsigned internalformat,
  26         bool use_own_gl_helper)
  27     : GpuBrowserCompositorOutputSurface(context,
  28                                         surface_id,
  29                                         output_surface_map,
  30                                         vsync_manager,
  31                                         overlay_candidate_validator.Pass()),
  32       internalformat_(internalformat),
  33       use_own_gl_helper_(use_own_gl_helper) {
  34   capabilities_.uses_default_gl_framebuffer = false;
  35   capabilities_.flipped_output_surface = true;
  36 }
  37
  38 GpuSurfacelessBrowserCompositorOutputSurface::
  39     ~GpuSurfacelessBrowserCompositorOutputSurface() {
  40 }
  41
  42 void GpuSurfacelessBrowserCompositorOutputSurface::SwapBuffers(
  43     cc::CompositorFrame* frame) {
  44   DCHECK(output_surface_);
  45
  46   GLuint texture = output_surface_->current_texture_id();
  47   output_surface_->SwapBuffers(frame->gl_frame_data->sub_buffer_rect);
  48   const gfx::Size& size = frame->gl_frame_data->size;
  49   context_provider_->ContextGL()->ScheduleOverlayPlaneCHROMIUM(
  50       0,
  51       GL_OVERLAY_TRANSFORM_NONE_CHROMIUM,
  52       texture,
  53       0,
  54       0,
  55       size.width(),
  56       size.height(),
  57       0,
  58       0,
  59       1.0f,
  60       1.0f);
  61   GpuBrowserCompositorOutputSurface::SwapBuffers(frame);
  62 }
  63
  64 void GpuSurfacelessBrowserCompositorOutputSurface::OnSwapBuffersComplete() {
  65   DCHECK(output_surface_);
  66   output_surface_->PageFlipComplete();
  67   GpuBrowserCompositorOutputSurface::OnSwapBuffersComplete();
  68 }
  69
  70 void GpuSurfacelessBrowserCompositorOutputSurface::BindFramebuffer() {
  71   DCHECK(output_surface_);
  72   output_surface_->BindFramebuffer();
  73 }
  74
  75 void GpuSurfacelessBrowserCompositorOutputSurface::Reshape(
  76     const gfx::Size& size,
  77     float scale_factor) {
  78   GpuBrowserCompositorOutputSurface::Reshape(size, scale_factor);
  79   DCHECK(output_surface_);
  80   output_surface_->Reshape(SurfaceSize(), scale_factor);
  81 }
  82
  83 bool GpuSurfacelessBrowserCompositorOutputSurface::BindToClient(
  84     cc::OutputSurfaceClient* client) {
  85   if (!GpuBrowserCompositorOutputSurface::BindToClient(client))
  86     return false;
  87   GLHelper* helper;
  88   if (use_own_gl_helper_) {
  89     gl_helper_.reset(new GLHelper(context_provider_->ContextGL(),
  90                                   context_provider_->ContextSupport()));
  91     helper = gl_helper_.get();
  92   } else {
  93     helper = ImageTransportFactory::GetInstance()->GetGLHelper();
  94   }
  95   output_surface_.reset(
  96       new BufferQueue(context_provider_, internalformat_, helper));
  97   return output_surface_->Initialize();
  98 }
  99
 100 }  // namespace content