Add film wear to the cinema postprocessing effects

Effects/display.eff

@@ -13,6 +13,13 @@
 			<wrap-t>repeat</wrap-t>
 			<internal-format>normalized</internal-format>
 		</texture>
+		<texture n="1">
+			<image>Textures\film-dirt.png</image>
+			<filter>linear-mipmap-linear</filter>
+			<wrap-s>repeat</wrap-s>
+			<wrap-t>repeat</wrap-t>
+			<internal-format>normalized</internal-format>
+		</texture>
 
 		<cinema>
 			<vignette><use>/sim/rendering/rembrandt/cinema/vignette</use></vignette>
@@ -26,6 +33,7 @@
 			<distortion-factor><use>/sim/rendering/rembrandt/cinema/distortion-factor</use></distortion-factor>
 			<color-fringe><use>/sim/rendering/rembrandt/cinema/color-fringe</use></color-fringe>
 			<color-fringe-factor><use>/sim/rendering/rembrandt/cinema/color-fringe-factor</use></color-fringe-factor>
+			<film-wear><use>/sim/rendering/rembrandt/cinema/film-wear</use></film-wear>
 		</cinema>
 
 		<buffer-nw-enabled><use>/sim/rendering/rembrandt/debug-buffer[0]/enabled</use></buffer-nw-enabled>
@@ -157,6 +165,14 @@
 				<type>buffer</type>
 				<name>bloom-3</name>
 			</texture-unit>
+			<texture-unit>
+				<unit>2</unit>
+				<image><use>texture[1]/image</use></image>
+				<filter><use>texture[1]/filter</use></filter>
+				<wrap-s><use>texture[1]/wrap-s</use></wrap-s>
+				<wrap-t><use>texture[1]/wrap-t</use></wrap-t>
+				<internal-format><use>texture[1]/internal-format</use></internal-format>
+			</texture-unit>
 
 			<program>
 				<vertex-shader>Shaders/fullscreen.vert</vertex-shader>
@@ -172,6 +188,11 @@
 				<type>sampler-2d</type>
 				<value type="int">1</value>
 			</uniform>
+			<uniform>
+				<name>film_tex</name>
+				<type>sampler-2d</type>
+				<value type="int">2</value>
+			</uniform>
 
 			<uniform>
 				<name>bloomEnabled</name>
@@ -246,6 +267,12 @@
 				<type>float</type>
 				<value><use>cinema/color-fringe-factor</use></value>
 			</uniform>
+
+			<uniform>
+				<name>filmWear</name>
+				<type>bool</type>
+				<value><use>cinema/film-wear</use></value>
+			</uniform>
 		</pass>
 	</technique>
 	<technique n="11">

Shaders/cinema.frag

@@ -1,5 +1,6 @@
 uniform sampler2D lighting_tex;
 uniform sampler2D bloom_tex;
+uniform sampler2D film_tex;
 
 uniform bool colorShift;
 uniform vec3 redShift;
@@ -16,8 +17,10 @@ uniform vec3 distortionFactor;
 uniform bool colorFringe;
 uniform float colorFringeFactor;
 
+uniform bool filmWear;
+
 uniform vec2 fg_BufferSize;
-// uniform float osg_SimulationTime;
+uniform float osg_SimulationTime;
 // uniform float shutterFreq;
 // uniform float shutterDuration;
 
@@ -54,6 +57,11 @@ void main() {
 		}
 	}
 
+	vec3 dirt = vec3(1.0);
+	if (filmWear) {
+		dirt = texture2D(film_tex, initialCoords + vec2(0.0, osg_SimulationTime * 7.7)).rgb;
+	}
+
     vec4 color = texture2D( lighting_tex, c1 );
 	if (bloomEnabled && bloomBuffers)
 		color += bloomStrength * texture2D( bloom_tex, c1 );
@@ -77,10 +85,10 @@ void main() {
 		c = c * vec2( 1.0, fg_BufferSize.y / fg_BufferSize.x );
 		float l = length(c);
 		float f = smoothstep( innerCircle, innerCircle * outerCircle, l );
-		color.rgb = (1 - f) * color.rgb;
+		color.rgb = (1.0 - f) * color.rgb;
 	}
 	// if ((osg_FrameNumber % 6) == 0)
 		// f = 1.0;
 
-    gl_FragColor = color;
+    gl_FragColor = color * vec4(dirt, 1.0);
 }

gui/dialogs/rembrandt.xml

@@ -1007,6 +1007,31 @@
 		</text>
 	</group>
 
+	<group>
+		<layout>hbox</layout>
+		<halign>left</halign>
+
+		<checkbox>
+			<halign>left</halign>
+			<label>Film wear</label>
+			<name>film-wear</name>
+			<property>/sim/rendering/rembrandt/cinema/film-wear</property>
+			<binding>
+				<command>dialog-apply</command>
+				<object-name>film-wear</object-name>
+			</binding>
+			<enable>
+				<and>
+					<not><property>/sim/rendering/rembrandt/night-vision</property></not>
+					<or>
+						<property>/sim/rendering/rembrandt/cinema/vignette</property>
+						<property>/sim/rendering/rembrandt/cinema/color-shift</property>
+					</or>
+				</and>
+			</enable>
+		</checkbox>
+	</group>
+
 	<hrule/>
 
 	<group>

preferences.xml

@@ -101,6 +101,7 @@ Started September 2000 by David Megginson, david@megginson.com
 					</distortion-factor>
 					<color-fringe type="bool">false</color-fringe>
 					<color-fringe-factor type="float" userarchive="y">1.0</color-fringe-factor>
+					<film-wear type="bool">false</film-wear>
 				</cinema>
 				<exposure type="float" userarchive="y">1.0</exposure>
 				<use-color-for-depth type="bool">false</use-color-for-depth>