It's caused by not supporting R8G8B8, this fixes it for me anyways, no idea if it's right or not:

diff --git a/src/d3d9/d3d9_format.cpp b/src/d3d9/d3d9_format.cpp
index a51faba7..965953b1 100644
--- a/src/d3d9/d3d9_format.cpp
+++ b/src/d3d9/d3d9_format.cpp
@@ -7,7 +7,11 @@ namespace dxvk {
     switch (Format) {
       case D3D9Format::Unknown: return {};
 
-      case D3D9Format::R8G8B8: return {}; // Unsupported
+      case D3D9Format::R8G8B8: return {
+        VK_FORMAT_R8G8B8_UNORM,
+        VK_FORMAT_R8G8B8_SRGB,
+        VK_IMAGE_ASPECT_COLOR_BIT
+      };
 
       case D3D9Format::A8R8G8B8: return {
         VK_FORMAT_B8G8R8A8_UNORM,
@@ -554,4 +558,4 @@ namespace dxvk {
         || (supported.optimalTilingFeatures & Features) == Features;
   }
 
-}
\ No newline at end of file
+}

@Joshua-Ashton
Is there a reason it's marked "unsupported" in the code?

I wonder if it uses it as a scratch buffer or systemmem. I'll take a look later.

I wonder if it uses it as a scratch buffer or systemmem. I'll take a look later.

Have you had a chance to take a look at this? I'm having that black texture issue as well.

Did you retest with 1.9.2? https://github.com/doitsujin/dxvk/pull/2258 has fixed some R8G8B8 issues.

I will try that again, I may of mixed up the files, so I'll re-DL 1.9.2 again to test it specifically, thanks.

Ok, looks like I did mix up the D3D9.dll files, and downloading a fresh 1.9.2 and copying the dll over, did fix the problem, fantastic!

I found some problems, first I thank you for your work and second, there are some problems with this game, when I try to fight the game just crashes.

medieval2_d3d9.log

That is not related to this problem, open a new issue, since it's not even the same game, let alone the same issue.