From 07b017d2176e3bb2ff998624b227e6bc9e2b1e03 Mon Sep 17 00:00:00 2001
From: RD42 <42702181+dashr9230@users.noreply.github.com>
Date: Mon, 13 May 2024 22:22:05 +0800
Subject: [PATCH] [saco] Implement `DXUT_Dynamic_*` functions

---
 saco/d3d9/common/DXUTmisc.cpp | 112 ++++++++++++++++++++++++++++++++++
 saco/d3d9/common/dxstdafx.h   |   5 ++
 2 files changed, 117 insertions(+)

diff --git a/saco/d3d9/common/DXUTmisc.cpp b/saco/d3d9/common/DXUTmisc.cpp
index 7d3f8aa..67c34b7 100644
--- a/saco/d3d9/common/DXUTmisc.cpp
+++ b/saco/d3d9/common/DXUTmisc.cpp
@@ -321,3 +321,115 @@ bool DXUTFindMediaSearchParentDirs( TCHAR* strSearchPath, int cchSearch, TCHAR*
 }
 
 
+
+//--------------------------------------------------------------------------------------
+// Direct3D9 dynamic linking support -- calls top-level D3D9 APIs with graceful
+// failure if APIs are not present.
+//--------------------------------------------------------------------------------------
+
+// Function prototypes
+typedef IDirect3D9* (WINAPI * LPDIRECT3DCREATE9) (UINT);
+typedef INT         (WINAPI * LPD3DPERF_BEGINEVENT)(D3DCOLOR, LPCTSTR);
+typedef INT         (WINAPI * LPD3DPERF_ENDEVENT)(void);
+typedef VOID        (WINAPI * LPD3DPERF_SETMARKER)(D3DCOLOR, LPCTSTR);
+typedef VOID        (WINAPI * LPD3DPERF_SETREGION)(D3DCOLOR, LPCTSTR);
+typedef BOOL        (WINAPI * LPD3DPERF_QUERYREPEATFRAME)(void);
+typedef VOID        (WINAPI * LPD3DPERF_SETOPTIONS)( DWORD dwOptions );
+typedef DWORD       (WINAPI * LPD3DPERF_GETSTATUS)( void );
+
+// Module and function pointers
+static HMODULE s_hModD3D9 = NULL;
+static LPDIRECT3DCREATE9 s_DynamicDirect3DCreate9 = NULL;
+static LPD3DPERF_BEGINEVENT s_DynamicD3DPERF_BeginEvent = NULL;
+static LPD3DPERF_ENDEVENT s_DynamicD3DPERF_EndEvent = NULL;
+static LPD3DPERF_SETMARKER s_DynamicD3DPERF_SetMarker = NULL;
+static LPD3DPERF_SETREGION s_DynamicD3DPERF_SetRegion = NULL;
+static LPD3DPERF_QUERYREPEATFRAME s_DynamicD3DPERF_QueryRepeatFrame = NULL;
+static LPD3DPERF_SETOPTIONS s_DynamicD3DPERF_SetOptions = NULL;
+static LPD3DPERF_GETSTATUS s_DynamicD3DPERF_GetStatus = NULL;
+
+// Ensure function pointers are initialized
+static bool DXUT_EnsureD3DAPIs( void )
+{
+    // If module is non-NULL, this function has already been called.  Note
+    // that this doesn't guarantee that all D3D9 procaddresses were found.
+    if( s_hModD3D9 != NULL )
+        return true;
+
+    // This may fail if DirectX 9 isn't installed
+    TCHAR wszPath[MAX_PATH+1];
+    if( !::GetSystemDirectory( wszPath, MAX_PATH+1 ) )
+        return false;
+    StringCchCat( wszPath, MAX_PATH, "\\d3d9.dll" );
+    s_hModD3D9 = LoadLibrary( wszPath );
+    if( s_hModD3D9 == NULL ) 
+        return false;
+    s_DynamicDirect3DCreate9 = (LPDIRECT3DCREATE9)GetProcAddress( s_hModD3D9, "Direct3DCreate9" );
+    s_DynamicD3DPERF_BeginEvent = (LPD3DPERF_BEGINEVENT)GetProcAddress( s_hModD3D9, "D3DPERF_BeginEvent" );
+    s_DynamicD3DPERF_EndEvent = (LPD3DPERF_ENDEVENT)GetProcAddress( s_hModD3D9, "D3DPERF_EndEvent" );
+    s_DynamicD3DPERF_SetMarker = (LPD3DPERF_SETMARKER)GetProcAddress( s_hModD3D9, "D3DPERF_SetMarker" );
+    s_DynamicD3DPERF_SetRegion = (LPD3DPERF_SETREGION)GetProcAddress( s_hModD3D9, "D3DPERF_SetRegion" );
+    s_DynamicD3DPERF_QueryRepeatFrame = (LPD3DPERF_QUERYREPEATFRAME)GetProcAddress( s_hModD3D9, "D3DPERF_QueryRepeatFrame" );
+    s_DynamicD3DPERF_SetOptions = (LPD3DPERF_SETOPTIONS)GetProcAddress( s_hModD3D9, "D3DPERF_SetOptions" );
+    s_DynamicD3DPERF_GetStatus = (LPD3DPERF_GETSTATUS)GetProcAddress( s_hModD3D9, "D3DPERF_GetStatus" );
+    return true;
+}
+
+IDirect3D9 * WINAPI DXUT_Dynamic_Direct3DCreate9(UINT SDKVersion) 
+{
+    if( DXUT_EnsureD3DAPIs() && s_DynamicDirect3DCreate9 != NULL )
+        return s_DynamicDirect3DCreate9( SDKVersion );
+    else
+        return NULL;
+}
+
+int WINAPI DXUT_Dynamic_D3DPERF_BeginEvent( D3DCOLOR col, LPCTSTR wszName )
+{
+    if( DXUT_EnsureD3DAPIs() && s_DynamicD3DPERF_BeginEvent != NULL )
+        return s_DynamicD3DPERF_BeginEvent( col, wszName );
+    else
+        return -1;
+}
+
+int WINAPI DXUT_Dynamic_D3DPERF_EndEvent( void )
+{
+    if( DXUT_EnsureD3DAPIs() && s_DynamicD3DPERF_EndEvent != NULL )
+        return s_DynamicD3DPERF_EndEvent();
+    else
+        return -1;
+}
+
+void WINAPI DXUT_Dynamic_D3DPERF_SetMarker( D3DCOLOR col, LPCTSTR wszName )
+{
+    if( DXUT_EnsureD3DAPIs() && s_DynamicD3DPERF_SetMarker != NULL )
+        s_DynamicD3DPERF_SetMarker( col, wszName );
+}
+
+void WINAPI DXUT_Dynamic_D3DPERF_SetRegion( D3DCOLOR col, LPCTSTR wszName )
+{
+    if( DXUT_EnsureD3DAPIs() && s_DynamicD3DPERF_SetRegion != NULL )
+        s_DynamicD3DPERF_SetRegion( col, wszName );
+}
+
+BOOL WINAPI DXUT_Dynamic_D3DPERF_QueryRepeatFrame( void )
+{
+    if( DXUT_EnsureD3DAPIs() && s_DynamicD3DPERF_QueryRepeatFrame != NULL )
+        return s_DynamicD3DPERF_QueryRepeatFrame();
+    else
+        return FALSE;
+}
+
+void WINAPI DXUT_Dynamic_D3DPERF_SetOptions( DWORD dwOptions )
+{
+    if( DXUT_EnsureD3DAPIs() && s_DynamicD3DPERF_SetOptions != NULL )
+        s_DynamicD3DPERF_SetOptions( dwOptions );
+}
+
+DWORD WINAPI DXUT_Dynamic_D3DPERF_GetStatus( void )
+{
+    if( DXUT_EnsureD3DAPIs() && s_DynamicD3DPERF_GetStatus != NULL )
+        return s_DynamicD3DPERF_GetStatus();
+    else
+        return 0;
+}
+
diff --git a/saco/d3d9/common/dxstdafx.h b/saco/d3d9/common/dxstdafx.h
index 569d3f9..46d56c8 100644
--- a/saco/d3d9/common/dxstdafx.h
+++ b/saco/d3d9/common/dxstdafx.h
@@ -21,6 +21,11 @@
 #include <stdio.h>
 #include <multimon.h> 
 
+// Direct3D includes
+#include <d3d9.h>
+#include <d3dx9.h>
+#include <dxerr9.h>
+
 
 #define STRSAFE_NO_DEPRECATE
 #include <strsafe.h>