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1 // Copyright (c) 2012 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 "ui/gl/gl_surface_cgl.h" | |
6 | |
7 #include <OpenGL/CGLRenderers.h> | |
8 | |
9 #include "base/basictypes.h" | |
10 #include "base/logging.h" | |
11 #include "base/mac/mac_util.h" | |
12 #include "ui/gl/gl_bindings.h" | |
13 #include "ui/gl/gl_context.h" | |
14 #include "ui/gl/gl_implementation.h" | |
15 #include "ui/gl/gpu_switching_manager.h" | |
16 | |
17 namespace gfx { | |
18 | |
19 namespace { | |
20 CGLPixelFormatObj g_pixel_format; | |
21 } | |
22 | |
23 GLSurfaceCGL::GLSurfaceCGL() {} | |
24 | |
25 bool GLSurfaceCGL::InitializeOneOff() { | |
26 static bool initialized = false; | |
27 if (initialized) | |
28 return true; | |
29 | |
30 // This is called from the sandbox warmup code on Mac OS X. | |
31 // GPU-related stuff is very slow without this, probably because | |
32 // the sandbox prevents loading graphics drivers or some such. | |
33 std::vector<CGLPixelFormatAttribute> attribs; | |
34 if (ui::GpuSwitchingManager::GetInstance()->SupportsDualGpus()) { | |
35 // Avoid switching to the discrete GPU just for this pixel | |
36 // format selection. | |
37 attribs.push_back(kCGLPFAAllowOfflineRenderers); | |
38 } | |
39 if (GetGLImplementation() == kGLImplementationAppleGL) { | |
40 attribs.push_back(kCGLPFARendererID); | |
41 attribs.push_back(static_cast<CGLPixelFormatAttribute>( | |
42 kCGLRendererGenericFloatID)); | |
43 } | |
44 attribs.push_back(static_cast<CGLPixelFormatAttribute>(0)); | |
45 | |
46 CGLPixelFormatObj format; | |
47 GLint num_pixel_formats; | |
48 if (CGLChoosePixelFormat(&attribs.front(), | |
49 &format, | |
50 &num_pixel_formats) != kCGLNoError) { | |
51 LOG(ERROR) << "Error choosing pixel format."; | |
52 return false; | |
53 } | |
54 if (!format) { | |
55 LOG(ERROR) << "format == 0."; | |
56 return false; | |
57 } | |
58 CGLReleasePixelFormat(format); | |
59 DCHECK_NE(num_pixel_formats, 0); | |
60 initialized = true; | |
61 return true; | |
62 } | |
63 | |
64 void* GLSurfaceCGL::GetPixelFormat() { | |
65 return g_pixel_format; | |
66 } | |
67 | |
68 GLSurfaceCGL::~GLSurfaceCGL() {} | |
69 | |
70 NoOpGLSurfaceCGL::NoOpGLSurfaceCGL(const gfx::Size& size) | |
71 : size_(size) { | |
72 } | |
73 | |
74 bool NoOpGLSurfaceCGL::Initialize() { | |
75 return true; | |
76 } | |
77 | |
78 void NoOpGLSurfaceCGL::Destroy() { | |
79 } | |
80 | |
81 bool NoOpGLSurfaceCGL::IsOffscreen() { | |
82 return true; | |
83 } | |
84 | |
85 bool NoOpGLSurfaceCGL::SwapBuffers() { | |
86 NOTREACHED() << "Cannot call SwapBuffers on a NoOpGLSurfaceCGL."; | |
87 return false; | |
88 } | |
89 | |
90 gfx::Size NoOpGLSurfaceCGL::GetSize() { | |
91 return size_; | |
92 } | |
93 | |
94 void* NoOpGLSurfaceCGL::GetHandle() { | |
95 return NULL; | |
96 } | |
97 | |
98 void* NoOpGLSurfaceCGL::GetDisplay() { | |
99 return NULL; | |
100 } | |
101 | |
102 NoOpGLSurfaceCGL::~NoOpGLSurfaceCGL() { | |
103 Destroy(); | |
104 } | |
105 | |
106 } // namespace gfx | |
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