1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
|
// Copyright (c) 2012 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_TEXTURE_IMAGE_TRANSPORT_SURFACE_H_
#define CONTENT_COMMON_GPU_TEXTURE_IMAGE_TRANSPORT_SURFACE_H_
#include <string>
#include "base/basictypes.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 "gpu/command_buffer/common/mailbox.h"
#include "gpu/command_buffer/service/texture_manager.h"
#include "ui/gl/gl_context.h"
#include "ui/gl/gl_surface.h"
namespace content {
class GpuChannelManager;
class TextureImageTransportSurface
: public ImageTransportSurface,
public GpuCommandBufferStub::DestructionObserver,
public gfx::GLSurface {
public:
TextureImageTransportSurface(GpuChannelManager* manager,
GpuCommandBufferStub* stub,
const gfx::GLSurfaceHandle& handle);
// gfx::GLSurface implementation.
virtual bool Initialize() OVERRIDE;
virtual void Destroy() OVERRIDE;
virtual bool DeferDraws() OVERRIDE;
virtual bool IsOffscreen() OVERRIDE;
virtual bool SwapBuffers() OVERRIDE;
virtual gfx::Size GetSize() OVERRIDE;
virtual void* GetHandle() OVERRIDE;
virtual unsigned GetFormat() OVERRIDE;
virtual bool SupportsPostSubBuffer() OVERRIDE;
virtual unsigned int GetBackingFrameBufferObject() OVERRIDE;
virtual bool PostSubBuffer(int x, int y, int width, int height) OVERRIDE;
virtual bool SetBackbufferAllocation(bool allocated) OVERRIDE;
virtual void SetFrontbufferAllocation(bool allocated) OVERRIDE;
virtual void* GetShareHandle() OVERRIDE;
virtual void* GetDisplay() OVERRIDE;
virtual void* GetConfig() 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>& latency_info) OVERRIDE;
virtual void WakeUpGpu() OVERRIDE;
// GpuCommandBufferStub::DestructionObserver implementation.
virtual void OnWillDestroyStub() OVERRIDE;
private:
gfx::Size backbuffer_size() const {
DCHECK(backbuffer_.get());
GLsizei width = 0;
GLsizei height = 0;
backbuffer_->texture()->GetLevelSize(GL_TEXTURE_2D, 0, &width, &height);
return gfx::Size(width, height);
}
virtual ~TextureImageTransportSurface();
void CreateBackTexture();
void AttachBackTextureToFBO();
void ReleaseBackTexture();
void ReleaseFrontTexture();
void BufferPresentedImpl(const gpu::Mailbox& mailbox_name);
// The framebuffer that represents this surface (service id). Allocated lazily
// in OnMakeCurrent.
uint32 fbo_id_;
// The current backbuffer.
scoped_refptr<gpu::gles2::TextureRef> backbuffer_;
scoped_refptr<gpu::gles2::TextureRef> frontbuffer_;
// The mailbox name for the current backbuffer texture. Needs to be unique per
// GL texture and is invalid while service_id is zero.
gpu::Mailbox back_mailbox_;
gpu::Mailbox front_mailbox_;
// The current size of the GLSurface. Used to disambiguate from the current
// texture size which might be outdated (since we use two buffers).
gfx::Size current_size_;
float scale_factor_;
// Whether or not the command buffer stub has been destroyed.
bool stub_destroyed_;
bool backbuffer_suggested_allocation_;
bool frontbuffer_suggested_allocation_;
scoped_ptr<ImageTransportHelper> helper_;
gfx::GLSurfaceHandle handle_;
// The offscreen surface used to make the context current. However note that
// the actual rendering is always redirected to an FBO.
scoped_refptr<gfx::GLSurface> surface_;
// Whether a SwapBuffers is pending.
bool is_swap_buffers_pending_;
// Whether we unscheduled command buffer because of pending SwapBuffers.
bool did_unschedule_;
// Holds a reference to the mailbox manager for cleanup.
scoped_refptr<gpu::gles2::MailboxManager> mailbox_manager_;
std::vector<ui::LatencyInfo> latency_info_;
DISALLOW_COPY_AND_ASSIGN(TextureImageTransportSurface);
};
} // namespace content
#endif // CONTENT_COMMON_GPU_TEXTURE_IMAGE_TRANSPORT_SURFACE_H_
|
