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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 "base/bind.h" | |
| 6 #include "ui/gl/gl_bindings.h" | |
| 7 #include "ui/gl/gl_context_stub_with_extensions.h" | |
| 8 #include "ui/gl/gl_egl_api_implementation.h" | |
| 9 #include "ui/gl/gl_gl_api_implementation.h" | |
| 10 #include "ui/gl/gl_implementation.h" | |
| 11 #include "ui/gl/gl_implementation_osmesa.h" | |
| 12 #include "ui/gl/gl_osmesa_api_implementation.h" | |
| 13 #include "ui/ozone/public/ozone_platform.h" | |
| 14 #include "ui/ozone/public/surface_factory_ozone.h" | |
| 15 | |
| 16 namespace gfx { | |
| 17 | |
| 18 namespace { | |
| 19 | |
| 20 void GL_BINDING_CALL MarshalClearDepthToClearDepthf(GLclampd depth) { | |
| 21 glClearDepthf(static_cast<GLclampf>(depth)); | |
| 22 } | |
| 23 | |
| 24 void GL_BINDING_CALL MarshalDepthRangeToDepthRangef(GLclampd z_near, | |
| 25 GLclampd z_far) { | |
| 26 glDepthRangef(static_cast<GLclampf>(z_near), static_cast<GLclampf>(z_far)); | |
| 27 } | |
| 28 | |
| 29 } // namespace | |
| 30 | |
| 31 void GetAllowedGLImplementations(std::vector<GLImplementation>* impls) { | |
| 32 impls->push_back(kGLImplementationEGLGLES2); | |
| 33 impls->push_back(kGLImplementationOSMesaGL); | |
| 34 } | |
| 35 | |
| 36 bool InitializeStaticGLBindings(GLImplementation implementation) { | |
| 37 // Prevent reinitialization with a different implementation. Once the gpu | |
| 38 // unit tests have initialized with kGLImplementationMock, we don't want to | |
| 39 // later switch to another GL implementation. | |
| 40 DCHECK_EQ(kGLImplementationNone, GetGLImplementation()); | |
| 41 ui::OzonePlatform::InitializeForGPU(); | |
| 42 | |
| 43 switch (implementation) { | |
| 44 case kGLImplementationOSMesaGL: | |
| 45 return InitializeStaticGLBindingsOSMesaGL(); | |
| 46 case kGLImplementationEGLGLES2: | |
| 47 if (!ui::SurfaceFactoryOzone::GetInstance()->LoadEGLGLES2Bindings( | |
| 48 base::Bind(&AddGLNativeLibrary), | |
| 49 base::Bind(&SetGLGetProcAddressProc))) | |
| 50 return false; | |
| 51 SetGLImplementation(kGLImplementationEGLGLES2); | |
| 52 InitializeStaticGLBindingsGL(); | |
| 53 InitializeStaticGLBindingsEGL(); | |
| 54 | |
| 55 // These two functions take single precision float rather than double | |
| 56 // precision float parameters in GLES. | |
| 57 ::gfx::g_driver_gl.fn.glClearDepthFn = MarshalClearDepthToClearDepthf; | |
| 58 ::gfx::g_driver_gl.fn.glDepthRangeFn = MarshalDepthRangeToDepthRangef; | |
| 59 break; | |
| 60 case kGLImplementationMockGL: { | |
| 61 SetGLImplementation(kGLImplementationMockGL); | |
| 62 InitializeStaticGLBindingsGL(); | |
| 63 break; | |
| 64 } | |
| 65 default: | |
| 66 NOTIMPLEMENTED() | |
| 67 << "Unsupported GL type for Ozone surface implementation"; | |
| 68 return false; | |
| 69 } | |
| 70 | |
| 71 return true; | |
| 72 } | |
| 73 | |
| 74 bool InitializeDynamicGLBindings(GLImplementation implementation, | |
| 75 GLContext* context) { | |
| 76 switch (implementation) { | |
| 77 case kGLImplementationOSMesaGL: | |
| 78 InitializeDynamicGLBindingsGL(context); | |
| 79 InitializeDynamicGLBindingsOSMESA(context); | |
| 80 break; | |
| 81 case kGLImplementationEGLGLES2: | |
| 82 InitializeDynamicGLBindingsGL(context); | |
| 83 InitializeDynamicGLBindingsEGL(context); | |
| 84 break; | |
| 85 case kGLImplementationMockGL: | |
| 86 if (!context) { | |
| 87 scoped_refptr<GLContextStubWithExtensions> mock_context( | |
| 88 new GLContextStubWithExtensions()); | |
| 89 mock_context->SetGLVersionString("3.0"); | |
| 90 InitializeDynamicGLBindingsGL(mock_context.get()); | |
| 91 } else | |
| 92 InitializeDynamicGLBindingsGL(context); | |
| 93 break; | |
| 94 default: | |
| 95 return false; | |
| 96 } | |
| 97 | |
| 98 return true; | |
| 99 } | |
| 100 | |
| 101 void InitializeDebugGLBindings() { | |
| 102 } | |
| 103 | |
| 104 void ClearGLBindings() { | |
| 105 ClearGLBindingsEGL(); | |
| 106 ClearGLBindingsGL(); | |
| 107 SetGLImplementation(kGLImplementationNone); | |
| 108 UnloadGLNativeLibraries(); | |
| 109 } | |
| 110 | |
| 111 bool GetGLWindowSystemBindingInfo(GLWindowSystemBindingInfo* info) { | |
| 112 switch (GetGLImplementation()) { | |
| 113 case kGLImplementationEGLGLES2: | |
| 114 return GetGLWindowSystemBindingInfoEGL(info); | |
| 115 default: | |
| 116 return false; | |
| 117 } | |
| 118 return false; | |
| 119 } | |
| 120 | |
| 121 } // namespace gfx | |
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