From 433a5d2382c9fa571a65943b2d908c4d1695f3f9 Mon Sep 17 00:00:00 2001
From: Misha <106913236+MishaProductions@users.noreply.github.com>
Date: Fri, 15 Mar 2024 14:22:38 -0400
Subject: [PATCH] Implement MxDisplaySurface::CopySurface

100% match
---
 LEGO1/omni/include/mxdisplaysurface.h     |  2 +-
 LEGO1/omni/src/video/mxdisplaysurface.cpp | 27 +++++++++++++++++++----
 LEGO1/omni/src/video/mxstillpresenter.cpp |  2 +-
 3 files changed, 25 insertions(+), 6 deletions(-)

diff --git a/LEGO1/omni/include/mxdisplaysurface.h b/LEGO1/omni/include/mxdisplaysurface.h
index 4e107f60..61b35eec 100644
--- a/LEGO1/omni/include/mxdisplaysurface.h
+++ b/LEGO1/omni/include/mxdisplaysurface.h
@@ -92,7 +92,7 @@ class MxDisplaySurface : public MxCore {
 
 	void ClearScreen();
 	static LPDIRECTDRAWSURFACE CreateCursorSurface();
-	static LPDIRECTDRAWSURFACE FUN_100bbfb0(LPDIRECTDRAWSURFACE p_und);
+	static LPDIRECTDRAWSURFACE CopySurface(LPDIRECTDRAWSURFACE p_src);
 
 	inline LPDIRECTDRAWSURFACE GetDirectDrawSurface1() { return this->m_ddSurface1; }
 	inline LPDIRECTDRAWSURFACE GetDirectDrawSurface2() { return this->m_ddSurface2; }
diff --git a/LEGO1/omni/src/video/mxdisplaysurface.cpp b/LEGO1/omni/src/video/mxdisplaysurface.cpp
index c599b131..8ba60a75 100644
--- a/LEGO1/omni/src/video/mxdisplaysurface.cpp
+++ b/LEGO1/omni/src/video/mxdisplaysurface.cpp
@@ -701,11 +701,30 @@ LPDIRECTDRAWSURFACE MxDisplaySurface::VTable0x44(
 	return surface;
 }
 
-// STUB: LEGO1 0x100bbfb0
-LPDIRECTDRAWSURFACE MxDisplaySurface::FUN_100bbfb0(LPDIRECTDRAWSURFACE p_und)
+// FUNCTION: LEGO1 0x100bbfb0
+LPDIRECTDRAWSURFACE MxDisplaySurface::CopySurface(LPDIRECTDRAWSURFACE p_src)
 {
-	// TODO
-	return NULL;
+	LPDIRECTDRAWSURFACE newSurface = NULL;
+	IDirectDraw* draw = MVideoManager()->GetDirectDraw();
+
+	DDSURFACEDESC ddsd;
+	memset(&ddsd, 0, sizeof(ddsd));
+	ddsd.dwSize = sizeof(ddsd);
+
+	p_src->GetSurfaceDesc(&ddsd);
+
+	if (draw->CreateSurface(&ddsd, &newSurface, NULL) != DD_OK) {
+		return NULL;
+	}
+
+	RECT rect = {0, 0, ddsd.dwWidth, ddsd.dwHeight};
+
+	if (newSurface->BltFast(0, 0, p_src, &rect, 16) != DD_OK) {
+		newSurface->Release();
+		return NULL;
+	}
+
+	return newSurface;
 }
 
 // FUNCTION: LEGO1 0x100bc070
diff --git a/LEGO1/omni/src/video/mxstillpresenter.cpp b/LEGO1/omni/src/video/mxstillpresenter.cpp
index a144e7c1..3908aadb 100644
--- a/LEGO1/omni/src/video/mxstillpresenter.cpp
+++ b/LEGO1/omni/src/video/mxstillpresenter.cpp
@@ -249,7 +249,7 @@ MxStillPresenter* MxStillPresenter::Clone()
 				}
 
 				if (m_unk0x58) {
-					presenter->m_unk0x58 = MxDisplaySurface::FUN_100bbfb0(m_unk0x58);
+					presenter->m_unk0x58 = MxDisplaySurface::CopySurface(m_unk0x58);
 				}
 
 				if (m_alpha) {