1 files changed, 191 insertions, 0 deletions
diff --git a/gpu/command_buffer/service/gl_context_mac.cc b/gpu/command_buffer/service/gl_context_mac.cc
new file mode 100644
index 0000000..9e79a69
--- /dev/null
+++ b/gpu/command_buffer/service/gl_context_mac.cc
@@ -0,0 +1,191 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// This file implements the ViewGLContext and PbufferGLContext classes.
+
+#include "gpu/command_buffer/service/gl_context.h"
+#include "gpu/command_buffer/common/logging.h"
+
+#if !defined(UNIT_TEST)
+#include "app/surface/accelerated_surface_mac.h"
+#endif
+
+namespace gpu {
+
+bool ViewGLContext::Initialize(bool multisampled) {
+#if !defined(UNIT_TEST)
+  if (multisampled) {
+    DLOG(WARNING) << "Multisampling not implemented.";
+  }
+
+  if (!surface_->Initialize()) {
+    DLOG(ERROR) << "Error initializing accelerated surface.";
+    return false;
+  }
+
+  if (!MakeCurrent()) {
+    Destroy();
+    DLOG(ERROR) << "Couldn't make context current for initialization.";
+    return false;
+  }
+
+  if (!InitializeGLEW()) {
+    Destroy();
+    return false;
+  }
+
+  return true;
+#else
+  return true;
+#endif  // UNIT_TEST
+}
+
+void ViewGLContext::Destroy() {
+#if !defined(UNIT_TEST)
+  surface_->Destroy();
+#endif  // UNIT_TEST
+}
+
+bool ViewGLContext::MakeCurrent() {
+#if !defined(UNIT_TEST)
+  return surface_->MakeCurrent();
+#else
+  return true;
+#endif
+}
+
+bool ViewGLContext::IsOffscreen() {
+  return false;
+}
+
+void ViewGLContext::SwapBuffers() {
+#if !defined(UNIT_TEST)
+  surface_->SwapBuffers();
+#endif  // UNIT_TEST
+}
+
+gfx::Size ViewGLContext::GetSize() {
+#if !defined(UNIT_TEST)
+  return surface_->GetSize();
+#else
+  return gfx::Size();
+#endif  // UNIT_TEST
+}
+
+GLContextHandle ViewGLContext::GetHandle() {
+#if !defined(UNIT_TEST)
+  return surface_->context();
+#else
+  return NULL;
+#endif  // UNIT_TEST
+}
+
+bool PbufferGLContext::Initialize(GLContext* shared_context) {
+#if !defined(UNIT_TEST)
+  // Get the shared context handle.
+  GLContextHandle shared_handle = NULL;
+  if (shared_context)
+    shared_handle = shared_context->GetHandle();
+
+  // Create a 1x1 pbuffer and associated context to bootstrap things.
+  static const CGLPixelFormatAttribute attribs[] = {
+    (CGLPixelFormatAttribute) kCGLPFAPBuffer,
+    (CGLPixelFormatAttribute) 0
+  };
+  CGLPixelFormatObj pixel_format;
+  GLint num_pixel_formats;
+  if (CGLChoosePixelFormat(attribs,
+                           &pixel_format,
+                           &num_pixel_formats) != kCGLNoError) {
+    DLOG(ERROR) << "Error choosing pixel format.";
+    Destroy();
+    return false;
+  }
+  if (!pixel_format) {
+    return false;
+  }
+  CGLError res = CGLCreateContext(pixel_format, shared_handle, &context_);
+  CGLDestroyPixelFormat(pixel_format);
+  if (res != kCGLNoError) {
+    DLOG(ERROR) << "Error creating context.";
+    Destroy();
+    return false;
+  }
+  if (CGLCreatePBuffer(1, 1,
+                       GL_TEXTURE_2D, GL_RGBA,
+                       0, &pbuffer_) != kCGLNoError) {
+    DLOG(ERROR) << "Error creating pbuffer.";
+    Destroy();
+    return false;
+  }
+  if (CGLSetPBuffer(context_, pbuffer_, 0, 0, 0) != kCGLNoError) {
+    DLOG(ERROR) << "Error attaching pbuffer to context.";
+    Destroy();
+    return false;
+  }
+
+  if (!MakeCurrent()) {
+    Destroy();
+    DLOG(ERROR) << "Couldn't make context current for initialization.";
+    return false;
+  }
+
+  if (!InitializeGLEW()) {
+    Destroy();
+    return false;
+  }
+#endif  // UNIT_TEST
+
+  return true;
+}
+
+void PbufferGLContext::Destroy() {
+#if !defined(UNIT_TEST)
+  if (context_) {
+    CGLDestroyContext(context_);
+    context_ = NULL;
+  }
+
+  if (pbuffer_) {
+    CGLDestroyPBuffer(pbuffer_);
+    pbuffer_ = NULL;
+  }
+#endif  // UNIT_TEST
+}
+
+bool PbufferGLContext::MakeCurrent() {
+#if !defined(UNIT_TEST)
+  if (CGLGetCurrentContext() != context_) {
+    if (CGLSetCurrentContext(context_) != kCGLNoError) {
+      DLOG(ERROR) << "Unable to make gl context current.";
+      return false;
+    }
+  }
+#endif  // UNIT_TEST
+
+  return true;
+}
+
+bool PbufferGLContext::IsOffscreen() {
+  return true;
+}
+
+void PbufferGLContext::SwapBuffers() {
+  NOTREACHED() << "Cannot call SwapBuffers on a PbufferGLContext.";
+}
+
+gfx::Size PbufferGLContext::GetSize() {
+  NOTREACHED() << "Should not be requesting size of a PbufferGLContext.";
+  return gfx::Size(1, 1);
+}
+
+GLContextHandle PbufferGLContext::GetHandle() {
+#if !defined(UNIT_TEST)
+  return context_;
+#else
+  return NULL;
+#endif  // UNIT_TEST
+}
+
+}  // namespace gpu