From 04ad98690b70529cea7a880f63b90d8fb2d64661 Mon Sep 17 00:00:00 2001
From: Robin Kertels <robin.kertels@gmail.com>
Date: Thu, 19 Sep 2024 16:28:17 +0200
Subject: [PATCH] [d3d9] Add SWVP HUD item

---
 README.md                   |  2 ++
 src/d3d9/d3d9_device.h      |  4 ++++
 src/d3d9/d3d9_hud.cpp       | 41 +++++++++++++++++++++++++++++++++++++
 src/d3d9/d3d9_hud.h         | 25 +++++++++++++++++++---
 src/d3d9/d3d9_swapchain.cpp |  1 +
 5 files changed, 70 insertions(+), 3 deletions(-)

diff --git a/README.md b/README.md
index c50ecec51..6182f5073 100644
--- a/README.md
+++ b/README.md
@@ -62,6 +62,8 @@ The `DXVK_HUD` environment variable controls a HUD which can display the framera
 - `cs`: Shows worker thread statistics.
 - `compiler`: Shows shader compiler activity
 - `samplers`: Shows the current number of sampler pairs used *[D3D9 Only]*
+- `ffshaders`: Shows the current number of shaders generated from fixed function state *[D3D9 Only]*
+- `swvp`: Shows whether or not the device is running in software vertex processing mode *[D3D9 Only]*
 - `scale=x`: Scales the HUD by a factor of `x` (e.g. `1.5`)
 - `opacity=y`: Adjusts the HUD opacity by a factor of `y` (e.g. `0.5`, `1.0` being fully opaque).
 
diff --git a/src/d3d9/d3d9_device.h b/src/d3d9/d3d9_device.h
index 0892222ed..ecceeecbb 100644
--- a/src/d3d9/d3d9_device.h
+++ b/src/d3d9/d3d9_device.h
@@ -1026,6 +1026,10 @@ namespace dxvk {
       return m_behaviorFlags & (D3DCREATE_MIXED_VERTEXPROCESSING | D3DCREATE_SOFTWARE_VERTEXPROCESSING);
     }
 
+    bool IsSWVP() const {
+      return m_isSWVP;
+    }
+
     UINT GetFixedFunctionVSCount() const {
       return m_ffModules.GetVSCount();
     }
diff --git a/src/d3d9/d3d9_hud.cpp b/src/d3d9/d3d9_hud.cpp
index eec8cf78e..d958584b3 100644
--- a/src/d3d9/d3d9_hud.cpp
+++ b/src/d3d9/d3d9_hud.cpp
@@ -125,4 +125,45 @@ namespace dxvk::hud {
     return position;
   }
 
+  HudSWVPState::HudSWVPState(D3D9DeviceEx* device)
+          : m_device          (device)
+          , m_isSWVPText ("") {}
+
+
+  void HudSWVPState::update(dxvk::high_resolution_clock::time_point time) {
+    if (m_device->IsSWVP()) {
+      if (m_device->CanOnlySWVP()) {
+        m_isSWVPText = "SWVP";
+      } else {
+        m_isSWVPText = "SWVP (Mixed)";
+      }
+    } else {
+      if (m_device->CanSWVP()) {
+        m_isSWVPText = "HWVP (Mixed)";
+      } else {
+        m_isSWVPText = "HWVP";
+      }
+    }
+  }
+
+
+  HudPos HudSWVPState::render(
+          HudRenderer&      renderer,
+          HudPos            position) {
+    position.y += 16.0f;
+
+    renderer.drawText(16.0f,
+      { position.x, position.y },
+      { 0.0f, 1.0f, 0.75f, 1.0f },
+      "Vertex Processing:");
+
+    renderer.drawText(16.0f,
+      { position.x + 240.0f, position.y },
+      { 1.0f, 1.0f, 1.0f, 1.0f },
+      m_isSWVPText);
+
+    position.y += 8.0f;
+    return position;
+  }
+
 }
diff --git a/src/d3d9/d3d9_hud.h b/src/d3d9/d3d9_hud.h
index d54bde574..7c43ec0cd 100644
--- a/src/d3d9/d3d9_hud.h
+++ b/src/d3d9/d3d9_hud.h
@@ -78,11 +78,30 @@ namespace dxvk::hud {
 
         D3D9DeviceEx* m_device;
 
-        dxvk::high_resolution_clock::time_point m_lastUpdate
-          = dxvk::high_resolution_clock::now();
-
         std::string m_ffShaderCount;
 
     };
 
+    /**
+     * \brief HUD item to whether or not we're in SWVP mode
+     */
+    class HudSWVPState : public HudItem {
+    public:
+
+        HudSWVPState(D3D9DeviceEx* device);
+
+        void update(dxvk::high_resolution_clock::time_point time);
+
+        HudPos render(
+                HudRenderer&      renderer,
+                HudPos            position);
+
+    private:
+
+        D3D9DeviceEx* m_device;
+
+        std::string m_isSWVPText;
+
+    };
+
 }
\ No newline at end of file
diff --git a/src/d3d9/d3d9_swapchain.cpp b/src/d3d9/d3d9_swapchain.cpp
index 35af5aa07..fcfd65d0d 100644
--- a/src/d3d9/d3d9_swapchain.cpp
+++ b/src/d3d9/d3d9_swapchain.cpp
@@ -1101,6 +1101,7 @@ namespace dxvk {
       m_hud->addItem<hud::HudClientApiItem>("api", 1, GetApiName());
       m_hud->addItem<hud::HudSamplerCount>("samplers", -1, m_parent);
       m_hud->addItem<hud::HudFixedFunctionShaders>("ffshaders", -1, m_parent);
+      m_hud->addItem<hud::HudSWVPState>("swvp", -1, m_parent);
 
 #ifdef D3D9_ALLOW_UNMAPPING
       m_hud->addItem<hud::HudTextureMemory>("memory", -1, m_parent);