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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 <stdint.h> | |
6 | |
7 #include <utility> | |
8 | |
9 #include "base/lazy_instance.h" | |
10 #include "base/threading/thread_local.h" | |
11 #include "components/mus/public/cpp/gles2_context.h" | |
12 #include "gpu/GLES2/gl2extchromium.h" | |
13 #include "gpu/command_buffer/client/gles2_interface.h" | |
14 // Even though this isn't used here, we need to include it to get the symbols to | |
15 // be exported in component build. | |
16 #include "mojo/public/c/gles2/chromium_extension.h" | |
17 #include "mojo/public/c/gles2/gles2.h" | |
18 | |
19 using mus::GLES2Context; | |
20 | |
21 namespace { | |
22 | |
23 const int32_t kNone = 0x3038; // EGL_NONE | |
24 | |
25 base::LazyInstance<base::ThreadLocalPointer<gpu::gles2::GLES2Interface> >::Leaky | |
26 g_gpu_interface; | |
27 | |
28 } // namespace | |
29 | |
30 extern "C" { | |
31 MojoGLES2Context MojoGLES2CreateContext(MojoHandle handle, | |
32 const int32_t* attrib_list, | |
33 MojoGLES2ContextLost lost_callback, | |
34 void* closure) { | |
35 mojo::MessagePipeHandle mph(handle); | |
36 mojo::ScopedMessagePipeHandle scoped_handle(mph); | |
37 std::vector<int32_t> attribs; | |
38 if (attrib_list) { | |
39 for (int32_t const* p = attrib_list; *p != kNone;) { | |
40 attribs.push_back(*p++); | |
41 attribs.push_back(*p++); | |
42 } | |
43 } | |
44 attribs.push_back(kNone); | |
45 std::unique_ptr<GLES2Context> client(new GLES2Context( | |
46 attribs, std::move(scoped_handle), lost_callback, closure)); | |
47 if (!client->Initialize()) | |
48 client.reset(); | |
49 return client.release(); | |
50 } | |
51 | |
52 void MojoGLES2DestroyContext(MojoGLES2Context context) { | |
53 delete static_cast<GLES2Context*>(context); | |
54 } | |
55 | |
56 void MojoGLES2MakeCurrent(MojoGLES2Context context) { | |
57 gpu::gles2::GLES2Interface* interface = NULL; | |
58 if (context) { | |
59 GLES2Context* client = static_cast<GLES2Context*>(context); | |
60 interface = client->interface(); | |
61 DCHECK(interface); | |
62 } | |
63 g_gpu_interface.Get().Set(interface); | |
64 } | |
65 | |
66 void MojoGLES2SwapBuffers() { | |
67 DCHECK(g_gpu_interface.Get().Get()); | |
68 g_gpu_interface.Get().Get()->SwapBuffers(); | |
69 } | |
70 | |
71 void* MojoGLES2GetGLES2Interface(MojoGLES2Context context) { | |
72 return static_cast<GLES2Context*>(context)->interface(); | |
73 } | |
74 | |
75 void* MojoGLES2GetContextSupport(MojoGLES2Context context) { | |
76 return static_cast<GLES2Context*>(context)->context_support(); | |
77 } | |
78 | |
79 #define VISIT_GL_CALL(Function, ReturnType, PARAMETERS, ARGUMENTS) \ | |
80 ReturnType GL_APIENTRY gl##Function PARAMETERS { \ | |
81 DCHECK(g_gpu_interface.Get().Get()); \ | |
82 return g_gpu_interface.Get().Get()->Function ARGUMENTS; \ | |
83 } | |
84 #include "mojo/public/c/gles2/gles2_call_visitor_autogen.h" | |
85 #include "mojo/public/c/gles2/gles2_call_visitor_chromium_extension_autogen.h" | |
86 #undef VISIT_GL_CALL | |
87 | |
88 } // extern "C" | |
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