From 76884d31f2b258d7951d80241e785c70c3ccb5e0 Mon Sep 17 00:00:00 2001
From: WinterSnowfall <WinterSnowfall@users.noreply.github.com>
Date: Mon, 5 Feb 2024 15:35:16 +0200
Subject: [PATCH] [d3d9] Add a modeHeightFilter config option

---
 dxvk.conf                 | 13 +++++++++++++
 src/d3d9/d3d9_adapter.cpp | 12 ++++++++++++
 src/d3d9/d3d9_adapter.h   |  2 ++
 src/d3d9/d3d9_options.cpp |  1 +
 src/d3d9/d3d9_options.h   |  3 +++
 5 files changed, 31 insertions(+)

diff --git a/dxvk.conf b/dxvk.conf
index 516aec4f..9b493ed9 100644
--- a/dxvk.conf
+++ b/dxvk.conf
@@ -555,6 +555,19 @@
 
 # d3d9.forceAspectRatio = ""
 
+# Mode Height Filter
+#
+# Only exposes modes with certain heights, if they are
+# also supported by the adapter. Can be used in conjunction
+# with forceAspectRatio to further restrict reported modes.
+# Useful for titles that break when too many modes are reported,
+# e.g., AquaNox, AquaNox 2: Revelation.
+#
+# Supported values:
+# - A list of mode heights, ie. "480,720,1080"
+
+# d3d9.modeHeightFilter = ""
+
 # Enumerate by Displays
 #
 # Whether we should enumerate D3D9 adapters by display (windows behaviour)
diff --git a/src/d3d9/d3d9_adapter.cpp b/src/d3d9/d3d9_adapter.cpp
index 44b631a4..e0ab9a86 100644
--- a/src/d3d9/d3d9_adapter.cpp
+++ b/src/d3d9/d3d9_adapter.cpp
@@ -771,6 +771,14 @@ namespace dxvk {
     uint32_t modeIndex = 0;
 
     const auto forcedRatio = Ratio<DWORD>(options.forceAspectRatio);
+        
+    if (!options.modeHeightFilter.empty() && m_forcedHeights.empty()) {
+      uint32_t forcedHeight;
+      for (auto height : str::split(options.modeHeightFilter, ",")) {
+        std::from_chars(height.data(), height.data() + height.size(), forcedHeight);
+        m_forcedHeights.emplace_back(forcedHeight);
+      }
+    }
 
     while (wsi::getDisplayMode(wsi::getDefaultMonitor(), modeIndex++, &devMode)) {
       // Skip interlaced modes altogether
@@ -784,6 +792,10 @@ namespace dxvk {
       if (!forcedRatio.undefined() && Ratio<DWORD>(devMode.width, devMode.height) != forcedRatio)
         continue;
 
+      if (!m_forcedHeights.empty() && 
+           std::find(m_forcedHeights.begin(), m_forcedHeights.end(), devMode.height) == m_forcedHeights.end())
+        continue;
+
       D3DDISPLAYMODEEX mode = ConvertDisplayMode(devMode);
       // Fix up the D3DFORMAT to match what we are enumerating
       mode.Format = static_cast<D3DFORMAT>(Format);
diff --git a/src/d3d9/d3d9_adapter.h b/src/d3d9/d3d9_adapter.h
index 0cf74981..7d83ff50 100644
--- a/src/d3d9/d3d9_adapter.h
+++ b/src/d3d9/d3d9_adapter.h
@@ -107,6 +107,8 @@ namespace dxvk {
 
     const D3D9VkFormatTable       m_d3d9Formats;
 
+    std::vector<uint32_t>         m_forcedHeights;
+
   };
 
 }
\ No newline at end of file
diff --git a/src/d3d9/d3d9_options.cpp b/src/d3d9/d3d9_options.cpp
index 190ca29b..dc979786 100644
--- a/src/d3d9/d3d9_options.cpp
+++ b/src/d3d9/d3d9_options.cpp
@@ -66,6 +66,7 @@ namespace dxvk {
     this->forceSwapchainMSAA            = config.getOption<int32_t>     ("d3d9.forceSwapchainMSAA",            -1);
     this->forceSampleRateShading        = config.getOption<bool>        ("d3d9.forceSampleRateShading",        false);
     this->forceAspectRatio              = config.getOption<std::string> ("d3d9.forceAspectRatio",              "");
+    this->modeHeightFilter              = config.getOption<std::string> ("d3d9.modeHeightFilter",              "");
     this->enumerateByDisplays           = config.getOption<bool>        ("d3d9.enumerateByDisplays",           true);
     this->longMad                       = config.getOption<bool>        ("d3d9.longMad",                       false);
     this->cachedDynamicBuffers          = config.getOption<bool>        ("d3d9.cachedDynamicBuffers",          false);
diff --git a/src/d3d9/d3d9_options.h b/src/d3d9/d3d9_options.h
index f5b1fce4..95700957 100644
--- a/src/d3d9/d3d9_options.h
+++ b/src/d3d9/d3d9_options.h
@@ -103,6 +103,9 @@ namespace dxvk {
     /// Forced aspect ratio, disable other modes
     std::string forceAspectRatio;
 
+    /// Restrict modes based on height
+    std::string modeHeightFilter;
+
     /// Enable dialog mode (ie. no exclusive fullscreen)
     bool enableDialogMode;