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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/gfx/gl/gl_context_egl.h" | |
| 6 | |
| 7 #include "base/debug/trace_event.h" | |
| 8 #include "base/logging.h" | |
| 9 #include "base/memory/scoped_ptr.h" | |
| 10 #include "build/build_config.h" | |
| 11 #include "third_party/angle/include/EGL/egl.h" | |
| 12 #include "ui/gfx/gl/egl_util.h" | |
| 13 #include "ui/gfx/gl/gl_surface.h" | |
| 14 | |
| 15 // This header must come after the above third-party include, as | |
| 16 // it brings in #defines that cause conflicts. | |
| 17 #include "ui/gfx/gl/gl_bindings.h" | |
| 18 | |
| 19 #if defined(USE_X11) | |
| 20 extern "C" { | |
| 21 #include <X11/Xlib.h> | |
| 22 } | |
| 23 #endif | |
| 24 | |
| 25 namespace gfx { | |
| 26 | |
| 27 std::string GLContextEGL::GetExtensions() { | |
| 28 const char* extensions = eglQueryString(display_, | |
| 29 EGL_EXTENSIONS); | |
| 30 if (!extensions) | |
| 31 return GLContext::GetExtensions(); | |
| 32 | |
| 33 return GLContext::GetExtensions() + " " + extensions; | |
| 34 } | |
| 35 | |
| 36 GLContextEGL::GLContextEGL(GLShareGroup* share_group) | |
| 37 : GLContext(share_group), | |
| 38 context_(NULL), | |
| 39 display_(NULL), | |
| 40 config_(NULL) { | |
| 41 } | |
| 42 | |
| 43 GLContextEGL::~GLContextEGL() { | |
| 44 Destroy(); | |
| 45 } | |
| 46 | |
| 47 bool GLContextEGL::Initialize( | |
| 48 GLSurface* compatible_surface, GpuPreference gpu_preference) { | |
| 49 DCHECK(compatible_surface); | |
| 50 DCHECK(!context_); | |
| 51 | |
| 52 static const EGLint kContextAttributes[] = { | |
| 53 EGL_CONTEXT_CLIENT_VERSION, 2, | |
| 54 EGL_NONE | |
| 55 }; | |
| 56 | |
| 57 display_ = compatible_surface->GetDisplay(); | |
| 58 config_ = compatible_surface->GetConfig(); | |
| 59 | |
| 60 context_ = eglCreateContext( | |
| 61 display_, | |
| 62 config_, | |
| 63 share_group() ? share_group()->GetHandle() : NULL, | |
| 64 kContextAttributes); | |
| 65 if (!context_) { | |
| 66 LOG(ERROR) << "eglCreateContext failed with error " | |
| 67 << GetLastEGLErrorString(); | |
| 68 Destroy(); | |
| 69 return false; | |
| 70 } | |
| 71 | |
| 72 return true; | |
| 73 } | |
| 74 | |
| 75 void GLContextEGL::Destroy() { | |
| 76 if (context_) { | |
| 77 if (!eglDestroyContext(display_, context_)) { | |
| 78 LOG(ERROR) << "eglDestroyContext failed with error " | |
| 79 << GetLastEGLErrorString(); | |
| 80 } | |
| 81 | |
| 82 context_ = NULL; | |
| 83 } | |
| 84 } | |
| 85 | |
| 86 bool GLContextEGL::MakeCurrent(GLSurface* surface) { | |
| 87 DCHECK(context_); | |
| 88 if (IsCurrent(surface)) | |
| 89 return true; | |
| 90 | |
| 91 TRACE_EVENT0("gpu", "GLContextEGL::MakeCurrent"); | |
| 92 | |
| 93 if (!eglMakeCurrent(display_, | |
| 94 surface->GetHandle(), | |
| 95 surface->GetHandle(), | |
| 96 context_)) { | |
| 97 DVLOG(1) << "eglMakeCurrent failed with error " | |
| 98 << GetLastEGLErrorString(); | |
| 99 return false; | |
| 100 } | |
| 101 | |
| 102 SetCurrent(this, surface); | |
| 103 if (!InitializeExtensionBindings()) { | |
| 104 ReleaseCurrent(surface); | |
| 105 return false; | |
| 106 } | |
| 107 | |
| 108 if (!surface->OnMakeCurrent(this)) { | |
| 109 LOG(ERROR) << "Could not make current."; | |
| 110 return false; | |
| 111 } | |
| 112 | |
| 113 return true; | |
| 114 } | |
| 115 | |
| 116 void GLContextEGL::ReleaseCurrent(GLSurface* surface) { | |
| 117 if (!IsCurrent(surface)) | |
| 118 return; | |
| 119 | |
| 120 SetCurrent(NULL, NULL); | |
| 121 eglMakeCurrent(display_, | |
| 122 EGL_NO_SURFACE, | |
| 123 EGL_NO_SURFACE, | |
| 124 EGL_NO_CONTEXT); | |
| 125 } | |
| 126 | |
| 127 bool GLContextEGL::IsCurrent(GLSurface* surface) { | |
| 128 DCHECK(context_); | |
| 129 | |
| 130 bool native_context_is_current = context_ == eglGetCurrentContext(); | |
| 131 | |
| 132 // If our context is current then our notion of which GLContext is | |
| 133 // current must be correct. On the other hand, third-party code | |
| 134 // using OpenGL might change the current context. | |
| 135 DCHECK(!native_context_is_current || (GetCurrent() == this)); | |
| 136 | |
| 137 if (!native_context_is_current) | |
| 138 return false; | |
| 139 | |
| 140 if (surface) { | |
| 141 if (surface->GetHandle() != eglGetCurrentSurface(EGL_DRAW)) | |
| 142 return false; | |
| 143 } | |
| 144 | |
| 145 return true; | |
| 146 } | |
| 147 | |
| 148 void* GLContextEGL::GetHandle() { | |
| 149 return context_; | |
| 150 } | |
| 151 | |
| 152 void GLContextEGL::SetSwapInterval(int interval) { | |
| 153 DCHECK(IsCurrent(NULL)); | |
| 154 if (!eglSwapInterval(display_, interval)) { | |
| 155 LOG(ERROR) << "eglSwapInterval failed with error " | |
| 156 << GetLastEGLErrorString(); | |
| 157 } | |
| 158 } | |
| 159 | |
| 160 } // namespace gfx | |
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Chromium Code Reviews
Issue 10392068:
ui: Move gl/ directory out of gfx/, up to ui/. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src