From 93319d4c836dcd5f90bedb40184672d00bca21dd Mon Sep 17 00:00:00 2001
From: FunkyFr3sh <cc.red.alert.1@googlemail.com>
Date: Thu, 26 Dec 2024 02:24:05 +0100
Subject: [PATCH] add support for limiting game speed of GDI games

---
 src/winapi_hooks.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/src/winapi_hooks.c b/src/winapi_hooks.c
index 0d2f981..7637d49 100644
--- a/src/winapi_hooks.c
+++ b/src/winapi_hooks.c
@@ -1032,6 +1032,11 @@ BOOL WINAPI fake_StretchBlt(
 {
     HWND hwnd = WindowFromDC(hdcDest);
 
+    if (g_ddraw.ref && g_ddraw.hwnd && hwnd == g_ddraw.hwnd && !g_ddraw.primary)
+    {
+        InterlockedExchange(&g_ddraw.render.screen_updated, TRUE);
+    }
+
     char class_name[MAX_PATH] = { 0 };
 
     if (g_ddraw.ref && g_ddraw.hwnd && hwnd && hwnd != g_ddraw.hwnd)
@@ -1140,6 +1145,11 @@ BOOL WINAPI fake_BitBlt(
 {
     HWND hwnd = WindowFromDC(hdc);
 
+    if (g_ddraw.ref && g_ddraw.hwnd && hwnd == g_ddraw.hwnd && !g_ddraw.primary)
+    {
+        InterlockedExchange(&g_ddraw.render.screen_updated, TRUE);
+    }
+
     char class_name[MAX_PATH] = { 0 };
 
     if (g_ddraw.ref && g_ddraw.hwnd && hwnd && hwnd != g_ddraw.hwnd)
@@ -1236,6 +1246,11 @@ int WINAPI fake_SetDIBitsToDevice(
 {
     HWND hwnd = WindowFromDC(hdc);
 
+    if (g_ddraw.ref && g_ddraw.hwnd && hwnd == g_ddraw.hwnd && !g_ddraw.primary)
+    {
+        InterlockedExchange(&g_ddraw.render.screen_updated, TRUE);
+    }
+
     char class_name[MAX_PATH] = { 0 };
 
     if (g_ddraw.ref && g_ddraw.hwnd && hwnd && hwnd != g_ddraw.hwnd)
@@ -1326,6 +1341,11 @@ int WINAPI fake_StretchDIBits(
 {
     HWND hwnd = WindowFromDC(hdc);
 
+    if (g_ddraw.ref && g_ddraw.hwnd && hwnd == g_ddraw.hwnd && !g_ddraw.primary)
+    {
+        InterlockedExchange(&g_ddraw.render.screen_updated, TRUE);
+    }
+
     char class_name[MAX_PATH] = { 0 };
 
     if (g_ddraw.ref && g_ddraw.hwnd && hwnd && hwnd != g_ddraw.hwnd)