Fix multisample line rasterization.

Multisampled lines should be rasterized as rectangles, even when we
don't support wide lines (i.e. they are one pixel wide).

Change-Id: I4960ea7347f826b3af1ff6830ebde46d3065aea9
Reviewed-on: https://swiftshader-review.googlesource.com/16008
Reviewed-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Tested-by: Nicolas Capens <nicolascapens@google.com>
diff --git a/src/Renderer/Renderer.cpp b/src/Renderer/Renderer.cpp
index 8fb1883..2bb699a 100644
--- a/src/Renderer/Renderer.cpp
+++ b/src/Renderer/Renderer.cpp
@@ -1743,7 +1743,7 @@
 			return false;
 		}
 
-		if(false)   // Rectangle
+		if(state.multiSample > 1)   // Rectangle
 		{
 			float4 P[4];
 			int C[4];