video_core: Eliminate the g_renderer global variable

We move the initialization of the renderer to the core class, while
keeping the creation of it and any other specifics in video_core. This
way we can ensure that the renderer is initialized and doesn't give
unfettered access to the renderer. This also makes dependencies on types
more explicit.

For example, the GPU class doesn't need to depend on the
existence of a renderer, it only needs to care about whether or not it
has a rasterizer, but since it was accessing the global variable, it was
also making the renderer a part of its dependency chain. By adjusting
the interface, we can get rid of this dependency.

1 files changed, 2 insertions, 23 deletions

diff --git a/src/video_core/video_core.cpp b/src/video_core/video_core.cpp
index 06b13e681..5085ef96b 100644
--- a/src/video_core/video_core.cpp
+++ b/src/video_core/video_core.cpp
@@ -3,37 +3,16 @@
 // Refer to the license.txt file included.
 
 #include <memory>
-#include "common/logging/log.h"
 #include "video_core/renderer_base.h"
 #include "video_core/renderer_opengl/renderer_opengl.h"
 #include "video_core/video_core.h"
 
-////////////////////////////////////////////////////////////////////////////////////////////////////
-// Video Core namespace
-
 namespace VideoCore {
 
-std::unique_ptr<RendererBase> g_renderer; ///< Renderer plugin
-
 std::atomic<bool> g_toggle_framelimit_enabled;
 
-/// Initialize the video core
-bool Init(EmuWindow& emu_window) {
-    g_renderer = std::make_unique<RendererOpenGL>(emu_window);
-    if (g_renderer->Init()) {
-        LOG_DEBUG(Render, "initialized OK");
-    } else {
-        LOG_CRITICAL(Render, "initialization failed !");
-        return false;
-    }
-    return true;
-}
-
-/// Shutdown the video core
-void Shutdown() {
-    g_renderer.reset();
-
-    LOG_DEBUG(Render, "shutdown OK");
+std::unique_ptr<RendererBase> CreateRenderer(EmuWindow& emu_window) {
+    return std::make_unique<RendererOpenGL>(emu_window);
 }
 
 } // namespace VideoCore