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author | Torne (Richard Coles) <torne@google.com> | 2014-06-20 14:52:04 +0100 |
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committer | Torne (Richard Coles) <torne@google.com> | 2014-06-20 14:52:04 +0100 |
commit | f8ee788a64d60abd8f2d742a5fdedde054ecd910 (patch) | |
tree | 7dc14380200b953c64e0ccd16435cdbd1dbf1205 /content/common/gpu/image_transport_surface_fbo_mac.h | |
parent | fcbbbe23a38088a52492922075e71a419c4b01ec (diff) | |
download | chromium_org-f8ee788a64d60abd8f2d742a5fdedde054ecd910.tar.gz |
Merge from Chromium at DEPS revision 278205
This commit was generated by merge_to_master.py.
Change-Id: I23f1e7ea8c154ba72e7fb594436216f861f868ab
Diffstat (limited to 'content/common/gpu/image_transport_surface_fbo_mac.h')
-rw-r--r-- | content/common/gpu/image_transport_surface_fbo_mac.h | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/content/common/gpu/image_transport_surface_fbo_mac.h b/content/common/gpu/image_transport_surface_fbo_mac.h new file mode 100644 index 0000000000..1302cfe51b --- /dev/null +++ b/content/common/gpu/image_transport_surface_fbo_mac.h @@ -0,0 +1,124 @@ +// 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. + +#ifndef CONTENT_COMMON_GPU_IMAGE_TRANSPORT_SURFACE_FBO_MAC_H_ +#define CONTENT_COMMON_GPU_IMAGE_TRANSPORT_SURFACE_FBO_MAC_H_ + +#include "base/mac/scoped_cftyperef.h" +#include "base/memory/scoped_ptr.h" +#include "content/common/gpu/gpu_command_buffer_stub.h" +#include "content/common/gpu/image_transport_surface.h" +#include "ui/gl/gl_bindings.h" + +namespace content { + +// We are backed by an offscreen surface for the purposes of creating +// a context, but use FBOs to render to texture. The texture may be backed by +// an IOSurface, or it may be presented to the screen via a CALayer, depending +// on the StorageProvider class specified. +class ImageTransportSurfaceFBO + : public gfx::GLSurface, + public ImageTransportSurface, + public GpuCommandBufferStub::DestructionObserver { + public: + // The interface through which storage for the color buffer of the FBO is + // allocated. + class StorageProvider { + public: + virtual ~StorageProvider() {} + // IOSurfaces cause too much address space fragmentation if they are + // allocated on every resize. This gets a rounded size for allocation. + virtual gfx::Size GetRoundedSize(gfx::Size size) = 0; + + // Allocate the storage for the color buffer. The specified context is + // current, and there is a texture bound to GL_TEXTURE_RECTANGLE_ARB. + virtual bool AllocateColorBufferStorage( + CGLContextObj context, gfx::Size size) = 0; + + // Free the storage allocated in the AllocateColorBufferStorage call. The + // GL texture that was bound has already been deleted by the caller. + virtual void FreeColorBufferStorage() = 0; + + // Retrieve the handle for the surface to send to the browser process to + // display. + virtual uint64 GetSurfaceHandle() const = 0; + }; + + ImageTransportSurfaceFBO(StorageProvider* storage_provider, + GpuChannelManager* manager, + GpuCommandBufferStub* stub, + gfx::PluginWindowHandle handle); + + // GLSurface implementation + virtual bool Initialize() OVERRIDE; + virtual void Destroy() OVERRIDE; + virtual bool DeferDraws() OVERRIDE; + virtual bool IsOffscreen() OVERRIDE; + virtual bool SwapBuffers() OVERRIDE; + virtual bool PostSubBuffer(int x, int y, int width, int height) OVERRIDE; + virtual bool SupportsPostSubBuffer() OVERRIDE; + virtual gfx::Size GetSize() OVERRIDE; + virtual void* GetHandle() OVERRIDE; + virtual void* GetDisplay() OVERRIDE; + virtual bool OnMakeCurrent(gfx::GLContext* context) OVERRIDE; + virtual unsigned int GetBackingFrameBufferObject() OVERRIDE; + virtual bool SetBackbufferAllocation(bool allocated) OVERRIDE; + virtual void SetFrontbufferAllocation(bool allocated) OVERRIDE; + + protected: + // ImageTransportSurface implementation + virtual void OnBufferPresented( + const AcceleratedSurfaceMsg_BufferPresented_Params& params) OVERRIDE; + virtual void OnResize(gfx::Size size, float scale_factor) OVERRIDE; + virtual void SetLatencyInfo( + const std::vector<ui::LatencyInfo>&) OVERRIDE; + virtual void WakeUpGpu() OVERRIDE; + + // GpuCommandBufferStub::DestructionObserver implementation. + virtual void OnWillDestroyStub() OVERRIDE; + + private: + virtual ~ImageTransportSurfaceFBO() OVERRIDE; + + void AdjustBufferAllocation(); + void DestroyFramebuffer(); + void CreateFramebuffer(); + + scoped_ptr<StorageProvider> storage_provider_; + + // Tracks the current buffer allocation state. + bool backbuffer_suggested_allocation_; + bool frontbuffer_suggested_allocation_; + + uint32 fbo_id_; + GLuint texture_id_; + GLuint depth_stencil_renderbuffer_id_; + bool has_complete_framebuffer_; + + // Weak pointer to the context that this was last made current to. + gfx::GLContext* context_; + + gfx::Size size_; + gfx::Size rounded_size_; + float scale_factor_; + + // Whether or not we've successfully made the surface current once. + bool made_current_; + + // Whether a SwapBuffers is pending. + bool is_swap_buffers_pending_; + + // Whether we unscheduled command buffer because of pending SwapBuffers. + bool did_unschedule_; + + std::vector<ui::LatencyInfo> latency_info_; + + scoped_ptr<ImageTransportHelper> helper_; + + DISALLOW_COPY_AND_ASSIGN(ImageTransportSurfaceFBO); +}; + +} // namespace content + +#endif // CONTENT_COMMON_GPU_IMAGE_TRANSPORT_SURFACE_MAC_H_ |