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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_switches.h"
6 #include "base/basictypes.h"
7 
8 namespace gfx {
9 
10 const char kGLImplementationDesktopName[]     = "desktop";
11 const char kGLImplementationOSMesaName[]      = "osmesa";
12 const char kGLImplementationAppleName[]       = "apple";
13 const char kGLImplementationEGLName[]         = "egl";
14 const char kGLImplementationSwiftShaderName[] = "swiftshader";
15 const char kGLImplementationMockName[]        = "mock";
16 
17 }  // namespace gfx
18 
19 namespace switches {
20 
21 // Disables use of D3D11.
22 const char kDisableD3D11[]                  = "disable-d3d11";
23 
24 // Stop the GPU from synchronizing on the vsync before presenting.
25 const char kDisableGpuVsync[]               = "disable-gpu-vsync";
26 
27 // Turns on GPU logging (debug build only).
28 const char kEnableGPUServiceLogging[]       = "enable-gpu-service-logging";
29 const char kEnableGPUClientLogging[]        = "enable-gpu-client-logging";
30 
31 // Turns on calling TRACE for every GL call.
32 const char kEnableGPUServiceTracing[]       = "enable-gpu-service-tracing";
33 
34 // Select which implementation of GL the GPU process should use. Options are:
35 //  desktop: whatever desktop OpenGL the user has installed (Linux and Mac
36 //           default).
37 //  egl: whatever EGL / GLES2 the user has installed (Windows default - actually
38 //       ANGLE).
39 //  osmesa: The OSMesa software renderer.
40 const char kUseGL[]                         = "use-gl";
41 
42 const char kSwiftShaderPath[]               = "swiftshader-path";
43 
44 // Inform Chrome that a GPU context will not be lost in power saving mode,
45 // screen saving mode, etc.  Note that this flag does not ensure that a GPU
46 // context will never be lost in any situations, say, a GPU reset.
47 const char kGpuNoContextLost[]              = "gpu-no-context-lost";
48 
49 // Indicates whether the dual GPU switching is supported or not.
50 const char kSupportsDualGpus[]              = "supports-dual-gpus";
51 
52 // Flag used for Linux tests: for desktop GL bindings, try to load this GL
53 // library first, but fall back to regular library if loading fails.
54 const char kTestGLLib[]                     = "test-gl-lib";
55 
56 // Use hardware gpu, if available, for tests.
57 const char kUseGpuInTests[] = "use-gpu-in-tests";
58 
59 // Disables GL drawing operations which produce pixel output. With this
60 // the GL output will not be correct but tests will run faster.
61 const char kDisableGLDrawingForTests[] = "disable-gl-drawing-for-tests";
62 
63 // Forces the use of OSMesa instead of hardware gpu.
64 const char kOverrideUseGLWithOSMesaForTests[] =
65     "override-use-gl-with-osmesa-for-tests";
66 
67 // This is the list of switches passed from this file that are passed from the
68 // GpuProcessHost to the GPU Process. Add your switch to this list if you need
69 // to read it in the GPU process, else don't add it.
70 const char* kGLSwitchesCopiedFromGpuProcessHost[] = {
71   kDisableGpuVsync,
72   kDisableD3D11,
73   kEnableGPUServiceLogging,
74   kEnableGPUServiceTracing,
75   kGpuNoContextLost,
76   kDisableGLDrawingForTests,
77   kOverrideUseGLWithOSMesaForTests,
78 };
79 const int kGLSwitchesCopiedFromGpuProcessHostNumSwitches =
80     arraysize(kGLSwitchesCopiedFromGpuProcessHost);
81 
82 }  // namespace switches
83 
84