From: Daniel Karbach <daniel.karbach@localhorst.tv>
Date: Wed, 23 Nov 2016 15:39:08 +0000 (+0100)
Subject: allow disabling vsync to fail
X-Git-Url: http://git.localhorst.tv/?p=blank.git;a=commitdiff_plain;h=f4729fcfcf6f4802dd2439aa23dc3a4faf39827d

allow disabling vsync to fail
---

diff --git a/src/graphics/viewport.cpp b/src/graphics/viewport.cpp
index a475f3e..0fe2408 100644
--- a/src/graphics/viewport.cpp
+++ b/src/graphics/viewport.cpp
@@ -105,7 +105,12 @@ Viewport::Viewport()
 
 void Viewport::VSync(bool b) {
 	if (SDL_GL_SetSwapInterval(b) != 0) {
-		throw SDLError("SDL_GL_SetSwapInterval");
+		if (b) {
+			throw SDLError("SDL_GL_SetSwapInterval(1)");
+		} else {
+			// allow failure, because this usually means there's no vsync
+			// support at all, i.e. "it's off"
+		}
 	}
 }