Merge pull request #4951 from waddlesplash/haiku-2

Initial support for Haiku.

Source/Core/Common/GL/GLInterface/BGL.cpp

@@ -0,0 +1,70 @@
+// Copyright 2017 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#include "Common/GL/GLInterface/BGL.h"
+
+#include <GLView.h>
+#include <Size.h>
+#include <Window.h>
+
+void cInterfaceBGL::Swap()
+{
+  m_gl->SwapBuffers();
+}
+
+bool cInterfaceBGL::Create(void* window_handle, bool core)
+{
+  m_window = static_cast<BWindow*>(window_handle);
+
+  m_gl = new BGLView(m_window->Bounds(), "cInterfaceBGL", B_FOLLOW_ALL_SIDES, 0,
+                     BGL_RGB | BGL_DOUBLE | BGL_ALPHA);
+  m_window->AddChild(m_gl);
+
+  s_opengl_mode = GLInterfaceMode::MODE_OPENGL;
+
+  // Control m_window size and picture scaling
+  BRect size = m_gl->Frame();
+  s_backbuffer_width = size.IntegerWidth();
+  s_backbuffer_height = size.IntegerHeight();
+
+  return true;
+}
+
+bool cInterfaceBGL::MakeCurrent()
+{
+  m_gl->LockGL();
+  return true;
+}
+
+bool cInterfaceBGL::ClearCurrent()
+{
+  m_gl->UnlockGL();
+  return true;
+}
+
+void cInterfaceBGL::Shutdown()
+{
+  // We don't need to delete m_gl, it's owned by the BWindow.
+  m_gl = nullptr;
+}
+
+void cInterfaceBGL::Update()
+{
+  BRect size = m_gl->Frame();
+
+  if (s_backbuffer_width == size.IntegerWidth() && s_backbuffer_height == size.IntegerHeight())
+    return;
+
+  s_backbuffer_width = size.IntegerWidth();
+  s_backbuffer_height = size.IntegerHeight();
+}
+
+void cInterfaceBGL::SwapInterval(int interval)
+{
+}
+
+void* cInterfaceBGL::GetFuncAddress(const std::string& name)
+{
+  return m_gl->GetGLProcAddress(name.c_str());
+}

Source/Core/Common/GL/GLInterface/BGL.h

@@ -0,0 +1,27 @@
+// Copyright 2017 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "Common/GL/GLInterfaceBase.h"
+
+class BWindow;
+class BGLView;
+
+class cInterfaceBGL final : public cInterfaceBase
+{
+public:
+  void Swap() override;
+  void* GetFuncAddress(const std::string& name) override;
+  bool Create(void* window_handle, bool core) override;
+  bool MakeCurrent() override;
+  bool ClearCurrent() override;
+  void Shutdown() override;
+  void Update() override;
+  void SwapInterval(int interval) override;
+
+private:
+  BWindow* m_window;
+  BGLView* m_gl;
+};

Source/Core/Common/GL/GLInterface/EGLHaiku.cpp

@@ -0,0 +1,30 @@
+// Copyright 2017 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#include "Common/GL/GLInterface/EGLHaiku.h"
+
+#include <Window.h>
+
+EGLDisplay cInterfaceEGLHaiku::OpenDisplay()
+{
+  return eglGetDisplay(EGL_DEFAULT_DISPLAY);
+}
+
+EGLNativeWindowType cInterfaceEGLHaiku::InitializePlatform(EGLNativeWindowType host_window,
+                                                           EGLConfig config)
+{
+  EGLint format;
+  eglGetConfigAttrib(egl_dpy, config, EGL_NATIVE_VISUAL_ID, &format);
+
+  BWindow* window = reinterpret_cast<BWindow*>(host_window);
+  const int width = window->Size().width;
+  const int height = window->Size().height;
+  GLInterface->SetBackBufferDimensions(width, height);
+
+  return host_window;
+}
+
+void cInterfaceEGLHaiku::ShutdownPlatform()
+{
+}

Source/Core/Common/GL/GLInterface/EGLHaiku.h

@@ -0,0 +1,16 @@
+// Copyright 2017 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "Common/GL/GLInterface/EGL.h"
+
+class cInterfaceEGLHaiku final : public cInterfaceEGL
+{
+protected:
+  EGLDisplay OpenDisplay() override;
+  EGLNativeWindowType InitializePlatform(EGLNativeWindowType host_window,
+                                         EGLConfig config) override;
+  void ShutdownPlatform() override;
+};

Source/Core/Common/GL/GLInterface/GLInterface.cpp

@@ -20,6 +20,8 @@
 #include "Common/GL/GLInterface/EGL.h"
 #elif ANDROID
 #include "Common/GL/GLInterface/EGLAndroid.h"
+#elif defined(__HAIKU__)
+#include "Common/GL/GLInterface/BGL.h"
 #else
 #error Platform doesnt have a GLInterface
 #endif
@@ -40,6 +42,8 @@ std::unique_ptr<cInterfaceBase> HostGL_CreateGLInterface()
 #endif
 #elif ANDROID
   return std::make_unique<cInterfaceEGLAndroid>();
+#elif defined(__HAIKU__)
+  return std::make_unique<cInterfaceBGL>();
 #else
   return nullptr;
 #endif