Optimized GameScreen.DrawMap

- Downscaled lightmap, since blurring will make this unnoticeable anyway
(TODO: make this optional)
- Render LOS in fewer passes by using a shader
- Use light volume to calculate LOS
- This also means we can use the override texture to render the diving
suit obstruct effect
- Don't render bunks and labels onto LOS background (TODO: add the
option to render back into the LOS background, i.e. just use
multiplicative blending as if it was the lightmap)
- Prefer SpriteSortMode.Deferred over all others, prefer
SamplerState.LinearClamp/PointClamp over all others
- Remove shader blur in favor of geometry blur (TODO: improve on this
further, right now it has a few artifacts)
- Trim light volumes
- Do some weird shit with the background particles (use DrawTiled
instead of relying on SamplerState.LinearWrap, because that's faster
somehow :/ )
- Pressing up/down in the console only returns a typed command now

Barotrauma/BarotraumaShared/Content/watershader.fx

@@ -48,8 +48,9 @@ float4 main(float4 position : SV_Position, float4 color : COLOR0, float2 texCoor
 float4 main2(float4 position : SV_Position, float4 color : COLOR0, float2 texCoord : TEXCOORD0) : COLOR0
 {	
 	float4 losColor = tex2D(LosSampler, texCoord);
+    float4 sample = tex2D(TextureSampler, texCoord);
 	
-	float4 outColor = float4(losColor.x, losColor.y, losColor.z, color.w);
+	float4 outColor = float4(sample.x, sample.y, sample.z, losColor.x);
 		
     return outColor;
 }
@@ -69,4 +70,4 @@ technique LosShader
     {
         PixelShader = compile ps_4_0_level_9_1 main2();
     }
-}
+}