| // 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 "content/browser/compositor/gpu_surfaceless_browser_compositor_output_surface.h" |
| |
| #include <utility> |
| |
| #include "cc/output/output_surface_client.h" |
| #include "cc/output/output_surface_frame.h" |
| #include "components/display_compositor/buffer_queue.h" |
| #include "components/display_compositor/compositor_overlay_candidate_validator.h" |
| #include "components/display_compositor/gl_helper.h" |
| #include "content/browser/compositor/reflector_impl.h" |
| #include "content/common/gpu/client/context_provider_command_buffer.h" |
| #include "gpu/GLES2/gl2extchromium.h" |
| #include "gpu/command_buffer/client/gles2_interface.h" |
| |
| namespace content { |
| |
| GpuSurfacelessBrowserCompositorOutputSurface:: |
| GpuSurfacelessBrowserCompositorOutputSurface( |
| scoped_refptr<ContextProviderCommandBuffer> context, |
| gpu::SurfaceHandle surface_handle, |
| const UpdateVSyncParametersCallback& update_vsync_parameters_callback, |
| std::unique_ptr<display_compositor::CompositorOverlayCandidateValidator> |
| overlay_candidate_validator, |
| unsigned int target, |
| unsigned int internalformat, |
| gfx::BufferFormat format, |
| gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager) |
| : GpuBrowserCompositorOutputSurface(std::move(context), |
| update_vsync_parameters_callback, |
| std::move(overlay_candidate_validator)), |
| gpu_memory_buffer_manager_(gpu_memory_buffer_manager) { |
| capabilities_.uses_default_gl_framebuffer = false; |
| capabilities_.flipped_output_surface = true; |
| // Set |max_frames_pending| to 2 for surfaceless, which aligns scheduling |
| // more closely with the previous surfaced behavior. |
| // With a surface, swap buffer ack used to return early, before actually |
| // presenting the back buffer, enabling the browser compositor to run ahead. |
| // Surfaceless implementation acks at the time of actual buffer swap, which |
| // shifts the start of the new frame forward relative to the old |
| // implementation. |
| capabilities_.max_frames_pending = 2; |
| |
| gl_helper_.reset(new display_compositor::GLHelper( |
| context_provider_->ContextGL(), context_provider_->ContextSupport())); |
| buffer_queue_.reset(new display_compositor::BufferQueue( |
| context_provider_->ContextGL(), target, internalformat, format, |
| gl_helper_.get(), gpu_memory_buffer_manager_, surface_handle)); |
| buffer_queue_->Initialize(); |
| } |
| |
| GpuSurfacelessBrowserCompositorOutputSurface:: |
| ~GpuSurfacelessBrowserCompositorOutputSurface() { |
| } |
| |
| bool GpuSurfacelessBrowserCompositorOutputSurface::IsDisplayedAsOverlayPlane() |
| const { |
| return true; |
| } |
| |
| unsigned GpuSurfacelessBrowserCompositorOutputSurface::GetOverlayTextureId() |
| const { |
| return buffer_queue_->current_texture_id(); |
| } |
| |
| void GpuSurfacelessBrowserCompositorOutputSurface::SwapBuffers( |
| cc::OutputSurfaceFrame frame) { |
| DCHECK(buffer_queue_); |
| DCHECK(reshape_size_ == frame.size); |
| // TODO(ccameron): What if a swap comes again before OnGpuSwapBuffersCompleted |
| // happens, we'd see the wrong swap size there? |
| swap_size_ = reshape_size_; |
| buffer_queue_->SwapBuffers(frame.sub_buffer_rect); |
| GpuBrowserCompositorOutputSurface::SwapBuffers(std::move(frame)); |
| } |
| |
| void GpuSurfacelessBrowserCompositorOutputSurface::BindFramebuffer() { |
| DCHECK(buffer_queue_); |
| buffer_queue_->BindFramebuffer(); |
| } |
| |
| GLenum GpuSurfacelessBrowserCompositorOutputSurface:: |
| GetFramebufferCopyTextureFormat() { |
| return buffer_queue_->internal_format(); |
| } |
| |
| void GpuSurfacelessBrowserCompositorOutputSurface::Reshape( |
| const gfx::Size& size, |
| float device_scale_factor, |
| const gfx::ColorSpace& color_space, |
| bool has_alpha) { |
| reshape_size_ = size; |
| GpuBrowserCompositorOutputSurface::Reshape(size, device_scale_factor, |
| color_space, has_alpha); |
| DCHECK(buffer_queue_); |
| buffer_queue_->Reshape(size, device_scale_factor, color_space); |
| } |
| |
| void GpuSurfacelessBrowserCompositorOutputSurface::OnGpuSwapBuffersCompleted( |
| const std::vector<ui::LatencyInfo>& latency_info, |
| gfx::SwapResult result, |
| const gpu::GpuProcessHostedCALayerTreeParamsMac* params_mac) { |
| bool force_swap = false; |
| if (result == gfx::SwapResult::SWAP_NAK_RECREATE_BUFFERS) { |
| // Even through the swap failed, this is a fixable error so we can pretend |
| // it succeeded to the rest of the system. |
| result = gfx::SwapResult::SWAP_ACK; |
| buffer_queue_->RecreateBuffers(); |
| force_swap = true; |
| } |
| buffer_queue_->PageFlipComplete(); |
| GpuBrowserCompositorOutputSurface::OnGpuSwapBuffersCompleted( |
| latency_info, result, params_mac); |
| if (force_swap) |
| client_->SetNeedsRedrawRect(gfx::Rect(swap_size_)); |
| } |
| |
| } // namespace content |