Proper 4:3 support

src/xenia/gpu/d3d12/d3d12_command_processor.cc

@@ -2205,9 +2205,11 @@ void D3D12CommandProcessor::IssueSwap(uint32_t frontbuffer_ptr,
   }
   D3D12_RESOURCE_DESC swap_texture_desc = swap_texture_resource->GetDesc();
 
+  auto aspect = graphics_system_->GetScaledAspectRatio();
+
   presenter->RefreshGuestOutput(
       uint32_t(swap_texture_desc.Width), uint32_t(swap_texture_desc.Height),
-      1280, 720,
+      aspect.first, aspect.second,
       [this, &swap_texture_srv_desc, frontbuffer_format, swap_texture_resource,
        &swap_texture_desc](
           ui::Presenter::GuestOutputRefreshContext& context) -> bool {

src/xenia/gpu/graphics_system.cc

@@ -67,6 +67,9 @@ X_STATUS GraphicsSystem::Setup(cpu::Processor* processor,
   kernel_state_ = kernel_state;
   app_context_ = app_context;
 
+  scaled_aspect_x_ = 16;
+  scaled_aspect_y_ = 9;
+
   if (provider_) {
     // Safe if either the UI thread call or the presenter creation fails.
     if (app_context_) {

src/xenia/gpu/graphics_system.h

@@ -86,6 +86,14 @@ class GraphicsSystem {
   bool Save(ByteStream* stream);
   bool Restore(ByteStream* stream);
 
+  std::pair<uint32_t, uint32_t> GetScaledAspectRatio() const {
+    return {scaled_aspect_x_, scaled_aspect_y_};
+  };
+  void SetScaledAspectRatio(uint32_t x, uint32_t y) {
+    scaled_aspect_x_ = x;
+    scaled_aspect_y_ = y;
+  };
+
  protected:
   GraphicsSystem();
 
@@ -117,6 +125,9 @@ class GraphicsSystem {
 
   bool paused_ = false;
 
+  uint32_t scaled_aspect_x_ = 0;
+  uint32_t scaled_aspect_y_ = 0;
+
  private:
   std::unique_ptr<ui::Presenter> presenter_;
 

src/xenia/gpu/vulkan/vulkan_command_processor.cc

@@ -1286,8 +1286,11 @@ void VulkanCommandProcessor::IssueSwap(uint32_t frontbuffer_ptr,
     return;
   }
 
+  auto aspect = graphics_system_->GetScaledAspectRatio();
+
   presenter->RefreshGuestOutput(
-      frontbuffer_width_scaled, frontbuffer_height_scaled, 1280, 720,
+      frontbuffer_width_scaled, frontbuffer_height_scaled, aspect.first,
+      aspect.second,
       [this, frontbuffer_width_scaled, frontbuffer_height_scaled,
        frontbuffer_format, swap_texture_view](
           ui::Presenter::GuestOutputRefreshContext& context) -> bool {