From 6ece1690195cafd16b18ca1e37881daad1c19ee6 Mon Sep 17 00:00:00 2001
From: Anonymous Maarten <anonymous.maarten@gmail.com>
Date: Wed, 26 Jun 2024 00:38:05 +0200
Subject: [PATCH] Assume mmx is supported on x64, require a test for x86 and
 disabled on other archs

---
 LEGO1/mxdirectx/mxdirect3d.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/LEGO1/mxdirectx/mxdirect3d.cpp b/LEGO1/mxdirectx/mxdirect3d.cpp
index 8e4a94e8..d1f23abd 100644
--- a/LEGO1/mxdirectx/mxdirect3d.cpp
+++ b/LEGO1/mxdirectx/mxdirect3d.cpp
@@ -1014,6 +1014,7 @@ int MxDeviceEnumerate::SupportsMMX()
 	}
 	int supports_mmx;
 #ifdef _MSC_VER
+#if defined(_M_IX86)
 	__asm {
 			mov eax, 0x0            ; EAX=0: Highest Function Parameter and Manufacturer ID
 #if _MSC_VER > 1100
@@ -1034,6 +1035,11 @@ int MxDeviceEnumerate::SupportsMMX()
 			adc eax, eax            ; Add with carry: EAX = EAX + EAX + CF = CF
 			mov supports_mmx, eax   ; Save eax into C variable
 	}
+#elif defined(_M_IX64)
+	supports_mmx = 1;
+#else
+	supports_mmx = 0;
+#endif
 #else
 	__asm__("movl $0x0, %%eax\n\t"  // EAX=0: Highest Function Parameter and Manufacturer ID
 			"cpuid\n\t"             // Run CPUID\n"