Frontend/GPU: Refactor context management

Changes the GraphicsContext to be managed by the GPU core. This
eliminates the need for the frontends to fool around with tricky
MakeCurrent/DoneCurrent calls that are dependent on the settings (such
as async gpu option).

This also refactors out the need to use QWidget::fromWindowContainer as
that caused issues with focus and input handling. Now we use a regular
QWidget and just access the native windowHandle() directly.

Another change is removing the debug tool setting in FrameMailbox.
Instead of trying to block the frontend until a new frame is ready, the
core will now take over presentation and draw directly to the window if
the renderer detects that its hooked by NSight or RenderDoc

Lastly, since it was in the way, I removed ScopeAcquireWindowContext and
replaced it with a simple subclass in GraphicsContext that achieves the
same result

1 files changed, 19 insertions, 9 deletions

diff --git a/src/video_core/video_core.cpp b/src/video_core/video_core.cpp
index a5f81a8a0c..fd9fec0186 100644
--- a/src/video_core/video_core.cpp
+++ b/src/video_core/video_core.cpp
@@ -15,13 +15,13 @@
 #endif
 #include "video_core/video_core.h"
 
-namespace VideoCore {
-
-std::unique_ptr<RendererBase> CreateRenderer(Core::Frontend::EmuWindow& emu_window,
-                                             Core::System& system) {
+namespace {
+std::unique_ptr<VideoCore::RendererBase> CreateRenderer(Core::Frontend::EmuWindow& emu_window,
+                                                        Core::System& system,
+                                                        Core::Frontend::GraphicsContext& context) {
     switch (Settings::values.renderer_backend) {
     case Settings::RendererBackend::OpenGL:
-        return std::make_unique<OpenGL::RendererOpenGL>(emu_window, system);
+        return std::make_unique<OpenGL::RendererOpenGL>(emu_window, system, context);
 #ifdef HAS_VULKAN
     case Settings::RendererBackend::Vulkan:
         return std::make_unique<Vulkan::RendererVulkan>(emu_window, system);
@@ -30,13 +30,23 @@ std::unique_ptr<RendererBase> CreateRenderer(Core::Frontend::EmuWindow& emu_wind
         return nullptr;
     }
 }
+} // namespace
 
-std::unique_ptr<Tegra::GPU> CreateGPU(Core::System& system) {
-    if (Settings::values.use_asynchronous_gpu_emulation) {
-        return std::make_unique<VideoCommon::GPUAsynch>(system, system.Renderer());
+namespace VideoCore {
+
+std::unique_ptr<Tegra::GPU> CreateGPU(Core::Frontend::EmuWindow& emu_window, Core::System& system) {
+    auto context = emu_window.CreateSharedContext();
+    const auto scope = context->Acquire();
+    auto renderer = CreateRenderer(emu_window, system, *context);
+    if (!renderer->Init()) {
+        return {};
     }
 
-    return std::make_unique<VideoCommon::GPUSynch>(system, system.Renderer());
+    if (Settings::values.use_asynchronous_gpu_emulation) {
+        return std::make_unique<VideoCommon::GPUAsynch>(system, std::move(renderer),
+                                                        std::move(context));
+    }
+    return std::make_unique<VideoCommon::GPUSynch>(system, std::move(renderer), std::move(context));
 }
 
 u16 GetResolutionScaleFactor(const RendererBase& renderer) {