Moving common GL code out of gpu/.

src/xenia/ui/gl/gl_context.h

@@ -0,0 +1,80 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2014 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#ifndef XENIA_UI_GL_GL_CONTEXT_H_
+#define XENIA_UI_GL_GL_CONTEXT_H_
+
+#include <gflags/gflags.h>
+
+#include <memory>
+
+#include "third_party/GL/glew.h"
+#include "third_party/GL/wglew.h"
+#include "xenia/ui/gl/blitter.h"
+
+DECLARE_bool(thread_safe_gl);
+
+extern "C" GLEWContext* glewGetContext();
+extern "C" WGLEWContext* wglewGetContext();
+
+namespace xe {
+namespace ui {
+namespace gl {
+
+class GLContext {
+ public:
+  GLContext();
+  GLContext(HWND hwnd, HGLRC glrc);
+  ~GLContext();
+
+  bool Initialize(HWND hwnd);
+  void AssertExtensionsPresent();
+
+  HDC dc() const { return dc_; }
+
+  std::unique_ptr<GLContext> CreateShared();
+
+  bool MakeCurrent();
+  void ClearCurrent();
+
+  Blitter* blitter() { return &blitter_; }
+
+ private:
+  void SetupDebugging();
+  void DebugMessage(GLenum source, GLenum type, GLuint id, GLenum severity,
+                    GLsizei length, const GLchar* message);
+  static void GLAPIENTRY
+  DebugMessageThunk(GLenum source, GLenum type, GLuint id, GLenum severity,
+                    GLsizei length, const GLchar* message, GLvoid* user_param);
+
+  HWND hwnd_;
+  HDC dc_;
+  HGLRC glrc_;
+
+  GLEWContext glew_context_;
+  WGLEWContext wglew_context_;
+
+  Blitter blitter_;
+};
+
+struct GLContextLock {
+  GLContextLock(GLContext* context) : context_(context) {
+    context_->MakeCurrent();
+  }
+  ~GLContextLock() { context_->ClearCurrent(); }
+
+ private:
+  GLContext* context_;
+};
+
+}  // namespace gl
+}  // namespace ui
+}  // namespace xe
+
+#endif  // XENIA_UI_GL_GL_CONTEXT_H_