From 93358a290c7a1dca407e9193dbd3d31b755f2af8 Mon Sep 17 00:00:00 2001
From: Anders Jenbo <anders@jenbo.dk>
Date: Sat, 3 Oct 2020 20:02:53 +0200
Subject: [PATCH] [SDL1.2] Check if an appropriate video mode exists for the
 given movie

This lets us fall back to software scaling for devices that do not
support a video mode that matches the given video.
---
 SourceX/storm/storm.cpp | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/SourceX/storm/storm.cpp b/SourceX/storm/storm.cpp
index 99bc309e5..282a4164e 100644
--- a/SourceX/storm/storm.cpp
+++ b/SourceX/storm/storm.cpp
@@ -623,6 +623,30 @@ void SVidPlayBegin(char *filename, int a2, int a3, int a4, int a5, int flags, HA
 	{
 		const auto *display = SDL_GetVideoSurface();
 		IsSVidVideoMode = (display->flags & (SDL_FULLSCREEN | SDL_NOFRAME)) != 0;
+
+		if (IsSVidVideoMode) {
+			/* Get available fullscreen/hardware modes */
+			SDL_Rect **modes = SDL_ListModes(NULL, display->flags);
+
+			/* Check is there are any modes available */
+			if(modes == (SDL_Rect **)0){
+				IsSVidVideoMode = false;
+			}
+
+			/* Check if our resolution is restricted */
+			if(modes != (SDL_Rect **)-1){
+				// Search for a usable video mode
+				bool UsableModeFound = false;
+				for (int i=0; modes[i]; i++) {
+					if (modes[i]->w == SVidWidth || modes[i]->h == SVidHeight) {
+						UsableModeFound = true;
+						break;
+					}
+				}
+				IsSVidVideoMode = UsableModeFound;
+			}
+		}
+
 		if (IsSVidVideoMode) {
 			int w, h;
 			if (display->w * SVidWidth > display->h * SVidHeight) {