Fixed white space on the left/top of background images with an origin of "0.5 0.5". Hopefully.

Added additional error output when SDL renderer fails to create window.

Author: Aloshi

src/Renderer_init_sdlgl.cpp

@@ -66,7 +66,7 @@ namespace Renderer
 
 		if(sdlWindow == NULL)
 		{
-			LOG(LogError) << "Error creating SDL window!";
+			LOG(LogError) << "Error creating SDL window!\n\t" << SDL_GetError();
 			return false;
 		}
 

src/components/ImageComponent.cpp

@@ -189,8 +189,8 @@ void ImageComponent::updateVertices()
 	const float width = round(bottomRight.x() - topLeft.x());
 	const float height = round(bottomRight.y() - topLeft.y());
 
-	topLeft[0] = round(topLeft[0]);
-	topLeft[1] = round(topLeft[1]);
+	topLeft[0] = floor(topLeft[0]);
+	topLeft[1] = floor(topLeft[1]);
 	bottomRight[0] = topLeft[0] + width;
 	bottomRight[1] = topLeft[1] + height;