From 4685e4c619a4f65cde5f73ea67902f90c18a900f Mon Sep 17 00:00:00 2001
From: WinterSnowfall <WinterSnowfall@users.noreply.github.com>
Date: Tue, 9 Jul 2024 21:39:06 +0300
Subject: [PATCH] [d3d9] Add a forceModeHeights config option

---
 dxvk.conf                 | 13 +++++++++++++
 src/d3d9/d3d9_adapter.cpp | 16 ++++++++++++++++
 src/d3d9/d3d9_adapter.h   |  2 ++
 src/d3d9/d3d9_options.cpp |  1 +
 src/d3d9/d3d9_options.h   |  3 +++
 5 files changed, 35 insertions(+)

diff --git a/dxvk.conf b/dxvk.conf
index 68d51a46c68..1d896e30b20 100644
--- a/dxvk.conf
+++ b/dxvk.conf
@@ -614,6 +614,19 @@
 
 # d3d9.forceAspectRatio = ""
 
+# Force Mode Heights
+#
+# 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, i.e. "480,720,1080"
+
+# d3d9.forceModeHeights = ""
+
 # 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 b40ef2454f3..3a943cb2e26 100644
--- a/src/d3d9/d3d9_adapter.cpp
+++ b/src/d3d9/d3d9_adapter.cpp
@@ -44,6 +44,16 @@ namespace dxvk {
     m_modeCacheFormat (D3D9Format::Unknown),
     m_d3d9Formats     (Adapter, m_parent->GetOptions()) {
     m_adapter->logAdapterInfo();
+
+    auto& options = m_parent->GetOptions();
+
+    if (!options.forceModeHeights.empty()) {
+      uint32_t forcedHeight = 0;
+      for (auto height : str::split(options.forceModeHeights, ",")) {
+        std::from_chars(height.data(), height.data() + height.size(), forcedHeight);
+        m_forcedModeHeights.emplace_back(forcedHeight);
+      }
+    }
   }
 
   template <size_t N>
@@ -816,6 +826,12 @@ namespace dxvk {
       if (!forcedRatio.undefined() && Ratio<DWORD>(devMode.width, devMode.height) != forcedRatio)
         continue;
 
+      if (!m_forcedModeHeights.empty() &&
+           std::find(m_forcedModeHeights.begin(),
+                     m_forcedModeHeights.end(),
+                     devMode.height) == m_forcedModeHeights.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 0cf74981971..e6e6fabf342 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_forcedModeHeights;
+
   };
 
 }
\ No newline at end of file
diff --git a/src/d3d9/d3d9_options.cpp b/src/d3d9/d3d9_options.cpp
index e535d610c5e..93eb60724b6 100644
--- a/src/d3d9/d3d9_options.cpp
+++ b/src/d3d9/d3d9_options.cpp
@@ -65,6 +65,7 @@ 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->forceModeHeights              = config.getOption<std::string> ("d3d9.forceModeHeights",              "");
     this->enumerateByDisplays           = config.getOption<bool>        ("d3d9.enumerateByDisplays",           true);
     this->cachedDynamicBuffers          = config.getOption<bool>        ("d3d9.cachedDynamicBuffers",          false);
     this->deviceLocalConstantBuffers    = config.getOption<bool>        ("d3d9.deviceLocalConstantBuffers",    false);
diff --git a/src/d3d9/d3d9_options.h b/src/d3d9/d3d9_options.h
index 7339f8cbb2f..70a904cc42e 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 forceModeHeights;
+
     /// Always use a spec constant to determine sampler type (instead of just in PS 1.x)
     /// Works around a game bug in Halo CE where it gives cube textures to 2d/volume samplers
     bool forceSamplerTypeSpecConstants;