From f087016e77a5fe574905b625f344b62eac070c96 Mon Sep 17 00:00:00 2001
From: Philip Rebohle <philip.rebohle@tu-dortmund.de>
Date: Thu, 24 May 2018 12:31:04 +0200
Subject: [PATCH] [dxgi] Add app-specific DXGI options

---
 src/dxgi/dxgi_options.cpp | 20 ++++++++++++++++++++
 src/dxgi/dxgi_options.h   | 30 ++++++++++++++++++++++++++++++
 src/dxgi/meson.build      |  1 +
 3 files changed, 51 insertions(+)
 create mode 100644 src/dxgi/dxgi_options.cpp
 create mode 100644 src/dxgi/dxgi_options.h

diff --git a/src/dxgi/dxgi_options.cpp b/src/dxgi/dxgi_options.cpp
new file mode 100644
index 000000000..94df5f808
--- /dev/null
+++ b/src/dxgi/dxgi_options.cpp
@@ -0,0 +1,20 @@
+#include "dxgi_options.h"
+
+#include <unordered_map>
+
+namespace dxvk {
+  
+  const static std::unordered_map<std::string, DxgiOptions> g_dxgiAppOptions = {{
+    { "Frostpunk.exe", DxgiOptions(DxgiOption::DeferSurfaceCreation) },
+  }};
+  
+  
+  DxgiOptions getDxgiAppOptions(const std::string& appName) {
+    auto appOptions = g_dxgiAppOptions.find(appName);
+    
+    return appOptions != g_dxgiAppOptions.end()
+      ? appOptions->second
+      : DxgiOptions();
+  }
+  
+}
\ No newline at end of file
diff --git a/src/dxgi/dxgi_options.h b/src/dxgi/dxgi_options.h
new file mode 100644
index 000000000..11c8c999b
--- /dev/null
+++ b/src/dxgi/dxgi_options.h
@@ -0,0 +1,30 @@
+#pragma once
+
+#include "dxgi_include.h"
+
+namespace dxvk {
+  
+  /**
+   * \brief DXGI options
+   * 
+   * Per-app options that control the
+   * behaviour of some DXGI classes.
+   */
+  enum class DxgiOption : uint64_t {
+    /// Defer surface creation until first present call. This
+    /// fixes issues with games that create multiple swap chains
+    /// for a single window that may interfere with each other.
+    DeferSurfaceCreation,
+  };
+  
+  using DxgiOptions = Flags<DxgiOption>;
+  
+  /**
+   * \brief Gets app-specific DXGI options
+   * 
+   * \param [in] appName Application name
+   * \returns DXGI options for this application
+   */
+  DxgiOptions getDxgiAppOptions(const std::string& appName);
+  
+}
diff --git a/src/dxgi/meson.build b/src/dxgi/meson.build
index cc76baebd..5dfc33478 100644
--- a/src/dxgi/meson.build
+++ b/src/dxgi/meson.build
@@ -10,6 +10,7 @@ dxgi_src = [
   'dxgi_factory.cpp',
   'dxgi_format.cpp',
   'dxgi_main.cpp',
+  'dxgi_options.cpp',
   'dxgi_output.cpp',
   'dxgi_presenter.cpp',
   'dxgi_swapchain.cpp',