Merge remote-tracking branch 'origin/master' into SmallFixes-Tobias

# Conflicts:
#	src/Engine/Rendering/DrawFinalPass.cpp

resources/Shaders/ForwardPlus.frag.glsl

@@ -1,5 +1,7 @@
 #version 430
 
+#define MIN_AMBIENT_LIGHT 0.3
+
 uniform mat4 M;
 uniform mat4 V;
 uniform mat4 P;
@@ -15,10 +17,11 @@ uniform vec2 DiffuseUVRepeat;
 uniform vec2 NormalUVRepeat;
 uniform vec2 SpecularUVRepeat;
 uniform vec2 GlowUVRepeat;
-layout (binding = 0) uniform sampler2D DiffuseTexture;
-layout (binding = 1) uniform sampler2D NormalMapTexture;
-layout (binding = 2) uniform sampler2D SpecularMapTexture;
-layout (binding = 3) uniform sampler2D GlowMapTexture;
+layout (binding = 0) uniform sampler2D AOTexture;
+layout (binding = 1) uniform sampler2D DiffuseTexture;
+layout (binding = 2) uniform sampler2D NormalMapTexture;
+layout (binding = 3) uniform sampler2D SpecularMapTexture;
+layout (binding = 4) uniform sampler2D GlowMapTexture;
 
 #define TILE_SIZE 16
 
@@ -120,6 +123,8 @@ vec4 CalcNormalMappedValue(vec3 normal, vec3 tangent, vec3 bitangent, vec2 textu
 
 void main()
 {
+	float ao = texelFetch(AOTexture, ivec2(gl_FragCoord.xy), 0).r;
+	ao = (clamp(1.0 - (1.0 - ao), 0.0, 1.0) + MIN_AMBIENT_LIGHT) /  (1.0 + MIN_AMBIENT_LIGHT);
 	vec4 diffuseTexel = texture2D(DiffuseTexture, Input.TextureCoordinate * DiffuseUVRepeat);
 	vec4 glowTexel = texture2D(GlowMapTexture, Input.TextureCoordinate * GlowUVRepeat);
 	vec4 specularTexel = texture2D(SpecularMapTexture, Input.TextureCoordinate * SpecularUVRepeat);
@@ -134,7 +139,7 @@ void main()
 	tilePos.y = int(gl_FragCoord.y/TILE_SIZE);
 
 	LightResult totalLighting;
-	totalLighting.Diffuse = vec4(AmbientColor.rgb, 1.0);
+	totalLighting.Diffuse = vec4(AmbientColor.rgb * ao, 1.0);
 	int currentTile = int(floor(gl_FragCoord.x/TILE_SIZE) + (floor(gl_FragCoord.y/TILE_SIZE) * int(ScreenDimensions.x/TILE_SIZE)));
 
 	int start = int(LightGrids.Data[currentTile].Start);
@@ -152,8 +157,8 @@ void main()
 		} else if (light.Type == 2) { //Directional
 			light_result = CalcDirectionalLightSource(V * light.Direction, light.Color, light.Intensity, viewVec, normal);
 		}
-		totalLighting.Diffuse += light_result.Diffuse;
-		totalLighting.Specular += light_result.Specular;
+		totalLighting.Diffuse += vec4(light_result.Diffuse.rgb * ao, light_result.Diffuse.a);
+		totalLighting.Specular += vec4(light_result.Specular.rgb * ao, light_result.Specular.a);
 	}
 
 	vec4 color_result = mix((Color * diffuseTexel * DiffuseColor), Input.ExplosionColor, Input.ExplosionPercentageElapsed);