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1 // Copyright 2015 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 "components/exo/buffer.h" | |
6 | |
7 #include <GLES2/gl2.h> | |
8 #include <GLES2/gl2ext.h> | |
9 #include <GLES2/gl2extchromium.h> | |
10 | |
11 #include <algorithm> | |
12 | |
13 #include "base/logging.h" | |
14 #include "base/trace_event/trace_event.h" | |
15 #include "base/trace_event/trace_event_argument.h" | |
16 #include "cc/output/context_provider.h" | |
17 #include "cc/resources/single_release_callback.h" | |
18 #include "cc/resources/texture_mailbox.h" | |
19 #include "gpu/command_buffer/client/gles2_interface.h" | |
20 #include "gpu/command_buffer/common/mailbox.h" | |
21 #include "ui/aura/env.h" | |
22 #include "ui/compositor/compositor.h" | |
23 #include "ui/gfx/gpu_memory_buffer.h" | |
24 | |
25 namespace exo { | |
26 namespace { | |
27 | |
28 GLenum GLInternalFormat(gfx::BufferFormat format) { | |
29 const GLenum kGLInternalFormats[] = { | |
30 GL_ATC_RGBA_INTERPOLATED_ALPHA_AMD, // ATC | |
31 GL_COMPRESSED_RGB_S3TC_DXT1_EXT, // ATCIA | |
32 GL_COMPRESSED_RGB_S3TC_DXT1_EXT, // DXT1 | |
33 GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, // DXT5 | |
34 GL_ETC1_RGB8_OES, // ETC1 | |
35 GL_R8_EXT, // R_8 | |
36 GL_RGBA, // RGBA_4444 | |
37 GL_RGB, // RGBX_8888 | |
38 GL_RGBA, // RGBA_8888 | |
39 GL_RGB, // BGRX_8888 | |
40 GL_BGRA_EXT, // BGRA_8888 | |
41 GL_RGB_YUV_420_CHROMIUM, // YUV_420 | |
42 GL_INVALID_ENUM, // YUV_420_BIPLANAR | |
43 GL_RGB_YCBCR_422_CHROMIUM, // UYVY_422 | |
44 }; | |
45 static_assert(arraysize(kGLInternalFormats) == | |
46 (static_cast<int>(gfx::BufferFormat::LAST) + 1), | |
47 "BufferFormat::LAST must be last value of kGLInternalFormats"); | |
48 | |
49 DCHECK(format <= gfx::BufferFormat::LAST); | |
50 return kGLInternalFormats[static_cast<int>(format)]; | |
51 } | |
52 | |
53 gpu::gles2::GLES2Interface* GetContextGL() { | |
54 ui::ContextFactory* context_factory = | |
55 aura::Env::GetInstance()->context_factory(); | |
56 return context_factory->SharedMainThreadContextProvider()->ContextGL(); | |
57 } | |
58 | |
59 } // namespace | |
60 | |
61 //////////////////////////////////////////////////////////////////////////////// | |
62 // Buffer, public: | |
63 | |
64 Buffer::Buffer(scoped_ptr<gfx::GpuMemoryBuffer> gpu_memory_buffer, | |
65 unsigned texture_target) | |
66 : gpu_memory_buffer_(gpu_memory_buffer.Pass()), | |
67 texture_target_(texture_target), | |
68 texture_id_(0), | |
69 image_id_(GetContextGL()->CreateImageCHROMIUM( | |
70 gpu_memory_buffer_->AsClientBuffer(), | |
71 gpu_memory_buffer_->GetSize().width(), | |
72 gpu_memory_buffer_->GetSize().height(), | |
73 GLInternalFormat(gpu_memory_buffer_->GetFormat()))), | |
74 weak_ptr_factory_(this) {} | |
75 | |
76 Buffer::~Buffer() { | |
77 gpu::gles2::GLES2Interface* gles2 = GetContextGL(); | |
78 if (texture_id_) | |
79 gles2->DeleteTextures(1, &texture_id_); | |
80 if (image_id_) | |
81 gles2->DestroyImageCHROMIUM(image_id_); | |
82 } | |
83 | |
84 scoped_ptr<cc::SingleReleaseCallback> Buffer::GetTextureMailbox( | |
85 cc::TextureMailbox* texture_mailbox) { | |
86 // Buffer can only be used by one client at a time. If there's no image, | |
87 // then a previous call to GetTextureMailbox() is using it and it has not | |
88 // been released yet. | |
89 if (!image_id_) { | |
90 DLOG(WARNING) << "Client tried to use a buffer that has not been released"; | |
91 return nullptr; | |
92 } | |
93 | |
94 // Take ownerhsip of image and texture ids. | |
95 unsigned texture_id = 0; | |
96 unsigned image_id = 0; | |
97 std::swap(texture_id, texture_id_); | |
98 std::swap(image_id, image_id_); | |
99 | |
100 // Create a new texture if needed or bind existing one. | |
101 gpu::gles2::GLES2Interface* gles2 = GetContextGL(); | |
102 gles2->ActiveTexture(GL_TEXTURE0); | |
103 if (!texture_id) { | |
104 gles2->GenTextures(1, &texture_id); | |
105 gles2->BindTexture(texture_target_, texture_id); | |
106 gles2->TexParameteri(texture_target_, GL_TEXTURE_MIN_FILTER, GL_LINEAR); | |
107 gles2->TexParameteri(texture_target_, GL_TEXTURE_MAG_FILTER, GL_LINEAR); | |
108 gles2->TexParameteri(texture_target_, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); | |
109 gles2->TexParameteri(texture_target_, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); | |
110 } else { | |
111 gles2->BindTexture(texture_target_, texture_id); | |
112 } | |
113 | |
114 // Bind the image to texture. | |
115 gles2->BindTexImage2DCHROMIUM(texture_target_, image_id); | |
116 | |
117 // Create a mailbox for texture. | |
118 gpu::Mailbox mailbox; | |
119 gles2->GenMailboxCHROMIUM(mailbox.name); | |
piman
2015/11/17 02:43:53
mailboxe names are not free to create (crypto-secu
reveman
2015/11/17 18:04:04
Good point. Yes, buffers are meant to be reused. B
| |
120 gles2->ProduceTextureCHROMIUM(texture_target_, mailbox.name); | |
121 uint64 fence_sync = gles2->InsertFenceSyncCHROMIUM(); | |
122 gles2->OrderingBarrierCHROMIUM(); | |
123 gpu::SyncToken sync_token; | |
124 gles2->GenUnverifiedSyncTokenCHROMIUM(fence_sync, sync_token.GetData()); | |
125 | |
126 bool is_overlay_candidate = false; | |
127 *texture_mailbox = | |
128 cc::TextureMailbox(mailbox, sync_token, texture_target_, | |
129 gpu_memory_buffer_->GetSize(), is_overlay_candidate); | |
130 return cc::SingleReleaseCallback::Create( | |
131 base::Bind(&Buffer::Release, weak_ptr_factory_.GetWeakPtr(), | |
132 texture_target_, texture_id, image_id)) | |
133 .Pass(); | |
134 } | |
135 | |
136 scoped_refptr<base::trace_event::TracedValue> Buffer::AsTracedValue() const { | |
137 scoped_refptr<base::trace_event::TracedValue> value = | |
138 new base::trace_event::TracedValue; | |
139 value->SetInteger("width", size_.width()); | |
140 value->SetInteger("height", size_.height()); | |
141 value->SetInteger("format", | |
142 static_cast<int>(gpu_memory_buffer_->GetFormat())); | |
143 return value; | |
144 } | |
145 | |
146 //////////////////////////////////////////////////////////////////////////////// | |
147 // Buffer, private: | |
148 | |
149 // static | |
150 void Buffer::Release(base::WeakPtr<Buffer> buffer, | |
151 unsigned texture_target, | |
152 unsigned texture_id, | |
153 unsigned image_id, | |
154 const gpu::SyncToken& sync_token, | |
155 bool is_lost) { | |
156 TRACE_EVENT1("exo", "Buffer::Release", "is_lost", is_lost); | |
157 | |
158 gpu::gles2::GLES2Interface* gles2 = GetContextGL(); | |
159 gles2->WaitSyncTokenCHROMIUM(sync_token.GetConstData()); | |
160 gles2->ActiveTexture(GL_TEXTURE0); | |
161 gles2->BindTexture(texture_target, texture_id); | |
162 gles2->ReleaseTexImage2DCHROMIUM(texture_target, image_id); | |
163 | |
164 // Delete resources and return if buffer is gone. | |
165 if (!buffer) { | |
166 gles2->DeleteTextures(1, &texture_id); | |
167 gles2->DestroyImageCHROMIUM(image_id); | |
168 return; | |
169 } | |
170 | |
171 DCHECK_EQ(buffer->texture_id_, 0u); | |
172 buffer->texture_id_ = texture_id; | |
173 DCHECK_EQ(buffer->image_id_, 0u); | |
174 buffer->image_id_ = image_id; | |
175 | |
176 if (!buffer->release_callback_.is_null()) | |
177 buffer->release_callback_.Run(); | |
178 } | |
179 | |
180 } // namespace exo | |
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