fgdata/Effects/tree.eff

<?xml version="1.0" encoding="utf-8"?>
<!-- Effects files for trees, which are placed by a shader. -->

<!-- Trees are drawn in two passes. The first draws the opaque parts
     with z writes enabled. The second draws the the transparent bits
     with z testing enabled and z writes disabled. The transparent
     tree silhouettes will blend correctly against the opaque
     geometry. They may cause artifacts when blending against other
     edges, but the overall "forest" is supposed to be nice and
     fuzzy. There might also be artifacts when blending over other
     transparent objects, but that's mostly unavoidable.

     Note: no sorting needed! -->
<PropertyList>
	<name>Effects/tree</name>
	<parameters>
		<texture n ="0">
		</texture>
		<!-- 	fog include -->
		<visibility><use>/environment/ground-visibility-m</use></visibility>
		<avisibility><use>/environment/visibility-m</use></avisibility>
		<lthickness><use>/environment/ground-haze-thickness-m</use></lthickness>
		<scattering><use>/rendering/scene/scattering</use></scattering>
		<ground_scattering><use>/environment/surface/scattering</use></ground_scattering>
		<terminator><use>/environment/terminator-relative-position-m</use></terminator>
		<fogtype><use>/sim/rendering/shaders/skydome</use></fogtype>
		<terrain_alt><use>/environment/mean-terrain-elevation-m</use></terrain_alt>
    <overcast><use>/rendering/scene/overcast</use></overcast>
    <eye_alt><use>/sim/rendering/eye-altitude-m</use></eye_alt>
		<snow_level><use>/environment/snow-level-m</use></snow_level>
		<dust_cover_factor><use>/environment/surface/dust-cover-factor</use></dust_cover_factor>
		<fogtype><use>/sim/rendering/shaders/skydome</use></fogtype>
		<fogstructure><use>/environment/fog-structure</use></fogstructure>
		<!-- 	END fog include -->
	</parameters>

  <technique n="4">
    <predicate>
      <and>
        <property>/sim/rendering/shaders/skydome</property>
        <property>/sim/rendering/random-vegetation</property>
        <or>
          <less-equal>
            <value type="float">2.0</value>
            <glversion/>
          </less-equal>
          <and>
            <extension-supported>GL_ARB_shader_objects</extension-supported>
            <extension-supported>GL_ARB_shading_language_100</extension-supported>
            <extension-supported>GL_ARB_vertex_shader</extension-supported>
            <extension-supported>GL_ARB_fragment_shader</extension-supported>
            <extension-supported>GL_ARB_multisample</extension-supported>
          </and>
        </or>
      </and>
    </predicate>
   
    <pass>
      <lighting>true</lighting>
			<material>
				<ambient type="vec4d">1.0 1.0 1.0 1.0</ambient>
				<diffuse type="vec4d">1.0 1.0 1.0 1.0</diffuse>
				<color-mode>off</color-mode>
			</material>
			<texture-unit>
				<unit>0</unit>
				<type>2d</type>
				<image>
					<use>texture[0]/image</use>
				</image>
				<wrap-s>clamp</wrap-s>
				<wrap-t>clamp</wrap-t>
			</texture-unit>
			<alpha-to-coverage>true</alpha-to-coverage>
      <program>
        <vertex-shader>Shaders/tree-haze.vert</vertex-shader>
        <fragment-shader>Shaders/tree-haze.frag</fragment-shader>
      </program>
      <uniform>
        <name>visibility</name>
        <type>float</type>
        <value><use>visibility</use></value>
      </uniform>
      <uniform>
        <name>avisibility</name>
        <type>float</type>
        <value><use>avisibility</use></value>
      </uniform>
       <uniform>
        <name>hazeLayerAltitude</name>
        <type>float</type>
        <value><use>lthickness</use></value>
      </uniform>
      <uniform>
        <name>scattering</name>
        <type>float</type>
        <value><use>scattering</use></value>
      </uniform>
      <uniform>
        <name>ground_scattering</name>
        <type>float</type>
        <value><use>ground_scattering</use></value>
      </uniform>
      <uniform>
        <name>terminator</name>
        <type>float</type>
        <value><use>terminator</use></value>
      </uniform>
      <uniform>
        <name>terrain_alt</name>
        <type>float</type>
        <value><use>terrain_alt</use></value>
      </uniform>
      <uniform>
        <name>overcast</name>
        <type>float</type>
        <value><use>overcast</use></value>
      </uniform>
     <uniform>
        <name>eye_alt</name>
        <type>float</type>
        <value><use>eye_alt</use></value>
      </uniform>
      <uniform>
        <name>texture</name>
        <type>sampler-2d</type>
        <value type="int">0</value>
      </uniform>
      <uniform>
        <name>colorMode</name>
        <type>int</type>
        <value>2</value> <!-- AMBIENT_AND_DIFFUSE -->
      </uniform>
      <!--<depth>
        <function>lequal</function>
        <write-mask type="bool">false</write-mask>
      </depth>-->
    </pass>
  </technique>
	
  <technique n="5">
    <predicate>
      <and>
        <property>/sim/rendering/shaders/skydome</property>
        <property>/sim/rendering/random-vegetation</property>
        <or>
          <less-equal>
            <value type="float">2.0</value>
            <glversion/>
          </less-equal>
          <and>
            <extension-supported>GL_ARB_shader_objects</extension-supported>
            <extension-supported>GL_ARB_shading_language_100</extension-supported>
            <extension-supported>GL_ARB_vertex_shader</extension-supported>
            <extension-supported>GL_ARB_fragment_shader</extension-supported>
          </and>
        </or>
      </and>
    </predicate>
   
    <pass>
      <lighting>true</lighting>
			<material>
				<ambient type="vec4d">1.0 1.0 1.0 1.0</ambient>
				<diffuse type="vec4d">1.0 1.0 1.0 1.0</diffuse>
				<color-mode>off</color-mode>
			</material>
			<texture-unit>
				<unit>0</unit>
				<type>2d</type>
				<image>
					<use>texture[0]/image</use>
				</image>
				<wrap-s>clamp</wrap-s>
				<wrap-t>clamp</wrap-t>
			</texture-unit>
			<alpha-test>
				<comparison>gequal</comparison>
				<reference type="float">0.1</reference>
			</alpha-test>
      <program>
        <vertex-shader>Shaders/tree-haze.vert</vertex-shader>
        <fragment-shader>Shaders/tree-haze.frag</fragment-shader>
      </program>
      <uniform>
        <name>visibility</name>
        <type>float</type>
        <value><use>visibility</use></value>
      </uniform>
      <uniform>
        <name>avisibility</name>
        <type>float</type>
        <value><use>avisibility</use></value>
      </uniform>
       <uniform>
        <name>hazeLayerAltitude</name>
        <type>float</type>
        <value><use>lthickness</use></value>
      </uniform>
      <uniform>
        <name>scattering</name>
        <type>float</type>
        <value><use>scattering</use></value>
      </uniform>
      <uniform>
        <name>ground_scattering</name>
        <type>float</type>
        <value><use>ground_scattering</use></value>
      </uniform>
      <uniform>
        <name>terminator</name>
        <type>float</type>
        <value><use>terminator</use></value>
      </uniform>
      <uniform>
        <name>terrain_alt</name>
        <type>float</type>
        <value><use>terrain_alt</use></value>
      </uniform>
      <uniform>
        <name>overcast</name>
        <type>float</type>
        <value><use>overcast</use></value>
      </uniform>
     <uniform>
        <name>eye_alt</name>
        <type>float</type>
        <value><use>eye_alt</use></value>
      </uniform>
      <uniform>
        <name>texture</name>
        <type>sampler-2d</type>
        <value type="int">0</value>
      </uniform>
      <uniform>
        <name>colorMode</name>
        <type>int</type>
        <value>2</value> <!-- AMBIENT_AND_DIFFUSE -->
      </uniform>
      <!--<depth>
        <function>lequal</function>
        <write-mask type="bool">false</write-mask>
      </depth>-->
    </pass>
  </technique>
  	
	<technique n="8">
		<predicate>
			<and>
        <property>/sim/rendering/rembrandt/enabled</property>
				<property>/sim/rendering/random-vegetation</property>
			</and>
		</predicate>
		<pass n="0">
			<lighting>true</lighting>
			<material>
				<ambient type="vec4d">1.0 1.0 1.0 1.0</ambient>
				<diffuse type="vec4d">1.0 1.0 1.0 1.0</diffuse>
				<color-mode>off</color-mode>
			</material>
			<alpha-test>
				<comparison>gequal</comparison>
				<reference type="float">0.1</reference>
			</alpha-test>
			<texture-unit>
				<unit>0</unit>
				<type>2d</type>
				<image>
					<use>texture[0]/image</use>
				</image>
				<wrap-s>clamp</wrap-s>
				<wrap-t>clamp</wrap-t>
			</texture-unit>
			<program>
				<vertex-shader>Shaders/deferred-tree.vert</vertex-shader>
				<fragment-shader>Shaders/deferred-tree.frag</fragment-shader>
				<fragment-shader>Shaders/gbuffer-functions.frag</fragment-shader>
				<fragment-shader>Shaders/gbuffer-encode.frag</fragment-shader>
			</program>
			<uniform>
				<name>texture</name>
				<type>sampler-2d</type>
				<value type="int">0</value>
			</uniform>
		</pass>
	</technique>
	
	<technique n="9">
		<predicate>
			<and>
				<property>/sim/rendering/random-vegetation</property>
        <extension-supported>GL_ARB_multisample</extension-supported>
        <extension-supported>GL_ARB_vertex_shader</extension-supported>
        <extension-supported>GL_ARB_fragment_shader</extension-supported>
				<less-equal>
					<value type="float">1.0</value>
					<shader-language/>
				</less-equal>
			</and>
		</predicate>
		<pass n="0">
			<lighting>true</lighting>
			<material>
				<ambient type="vec4d">1.0 1.0 1.0 1.0</ambient>
				<diffuse type="vec4d">1.0 1.0 1.0 1.0</diffuse>
				<color-mode>off</color-mode>
			</material>
			<alpha-to-coverage>true</alpha-to-coverage>
			<texture-unit>
				<unit>0</unit>
				<type>2d</type>
				<image>
					<use>texture[0]/image</use>
				</image>
				<wrap-s>clamp</wrap-s>
				<wrap-t>clamp</wrap-t>
			</texture-unit>
			<program>
				<!-- 				<vertex-shader>Shaders/include_fog.vert</vertex-shader> -->
				<vertex-shader>Shaders/tree.vert</vertex-shader>
				<fragment-shader n="0">Shaders/include_fog.frag</fragment-shader>
				<fragment-shader n="1">Shaders/tree.frag</fragment-shader>
			</program>
			<uniform>
				<name>baseTexture</name>
				<type>sampler-2d</type>
				<value type="int">0</value>
			</uniform>
			<!-- 	    BEGIN fog include -->
			<uniform>
				<name>visibility</name>
				<type>float</type>
				<value>
					<use>visibility</use>
				</value>
			</uniform>
			<uniform>
				<name>avisibility</name>
				<type>float</type>
				<value>
					<use>avisibility</use>
				</value>
			</uniform>
			<uniform>
				<name>hazeLayerAltitude</name>
				<type>float</type>
				<value>
					<use>lthickness</use>
				</value>
			</uniform>
			<uniform>
				<name>scattering</name>
				<type>float</type>
				<value>
					<use>scattering</use>
				</value>
			</uniform>
			<uniform>
				<name>terminator</name>
				<type>float</type>
				<value>
					<use>terminator</use>
				</value>
			</uniform>
			<uniform>
				<name>fogType</name>
				<type>int</type>
				<value>
					<use>fogtype</use>
				</value>
			</uniform>
			<!-- 			END fog include -->
		</pass>
	</technique>
	
	<technique n="10">
		<predicate>
			<and>
				<property>/sim/rendering/random-vegetation</property>
				<less-equal>
					<value type="float">1.0</value>
					<shader-language/>
				</less-equal>
			</and>
		</predicate>
		<pass n="0">
			<lighting>true</lighting>
			<material>
				<ambient type="vec4d">1.0 1.0 1.0 1.0</ambient>
				<diffuse type="vec4d">1.0 1.0 1.0 1.0</diffuse>
				<color-mode>off</color-mode>
			</material>
			<alpha-test>
				<comparison>gequal</comparison>
				<reference type="float">0.33</reference>
			</alpha-test>
			<texture-unit>
				<unit>0</unit>
				<type>2d</type>
				<image>
					<use>texture[0]/image</use>
				</image>
				<wrap-s>clamp</wrap-s>
				<wrap-t>clamp</wrap-t>
			</texture-unit>
			<program>
				<!-- 				<vertex-shader>Shaders/include_fog.vert</vertex-shader> -->
				<vertex-shader>Shaders/tree.vert</vertex-shader>
				<fragment-shader n="0">Shaders/include_fog.frag</fragment-shader>
				<fragment-shader n="1">Shaders/tree.frag</fragment-shader>
			</program>
			<uniform>
				<name>baseTexture</name>
				<type>sampler-2d</type>
				<value type="int">0</value>
			</uniform>
			<!-- 	    BEGIN fog include -->
			<uniform>
				<name>visibility</name>
				<type>float</type>
				<value>
					<use>visibility</use>
				</value>
			</uniform>
			<uniform>
				<name>avisibility</name>
				<type>float</type>
				<value>
					<use>avisibility</use>
				</value>
			</uniform>
			<uniform>
				<name>hazeLayerAltitude</name>
				<type>float</type>
				<value>
					<use>lthickness</use>
				</value>
			</uniform>
			<uniform>
				<name>scattering</name>
				<type>float</type>
				<value>
					<use>scattering</use>
				</value>
			</uniform>
			<uniform>
				<name>terminator</name>
				<type>float</type>
				<value>
					<use>terminator</use>
				</value>
			</uniform>
			<uniform>
				<name>fogType</name>
				<type>int</type>
				<value>
					<use>fogtype</use>
				</value>
			</uniform>
			<!-- 			END fog include -->
		</pass>

    <pass n="1">
			<lighting>true</lighting>
			<material>
				<ambient type="vec4d">1.0 1.0 1.0 1.0</ambient>
				<diffuse type="vec4d">1.0 1.0 1.0 1.0</diffuse>
				<color-mode>off</color-mode>
			</material>
			<render-bin>
				<bin-number>2</bin-number>
				<bin-name>RenderBin</bin-name>
			</render-bin>
			<alpha-test>
				<comparison>less</comparison>
				<reference type="float">0.33</reference>
			</alpha-test>
			<blend>
				<source>src-alpha</source>
				<destination>one-minus-src-alpha</destination>
			</blend>
			<depth>
				<write-mask>false</write-mask>
			</depth>
			<texture-unit>
				<unit>0</unit>
				<type>2d</type>
				<image>
					<use>texture[0]/image</use>
				</image>
				<wrap-s>clamp</wrap-s>
				<wrap-t>clamp</wrap-t>
			</texture-unit>
			<program>
<!-- 				<vertex-shader n="0">Shaders/include_fog.vert</vertex-shader> -->
				<vertex-shader n="1">Shaders/tree.vert</vertex-shader>
				<fragment-shader n="0">Shaders/include_fog.frag</fragment-shader>
				<fragment-shader n="1">Shaders/tree.frag</fragment-shader>
			</program>
			<uniform>
				<name>baseTexture</name>
				<type>sampler-2d</type>
				<value type="int">0</value>
			</uniform>
			<uniform>
				<name>visibility</name>
				<type>float</type>
				<value>
					<use>visibility</use>
				</value>
			</uniform>
			<uniform>
				<name>avisibility</name>
				<type>float</type>
				<value>
					<use>avisibility</use>
				</value>
			</uniform>
			<uniform>
				<name>hazeLayerAltitude</name>
				<type>float</type>
				<value>
					<use>lthickness</use>
				</value>
			</uniform>
			<uniform>
				<name>scattering</name>
				<type>float</type>
				<value>
					<use>scattering</use>
				</value>
			</uniform>
			<uniform>
				<name>terminator</name>
				<type>float</type>
				<value>
					<use>terminator</use>
				</value>
			</uniform>
			<uniform>
				<name>fogType</name>
				<type>int</type>
				<value>
					<use>fogtype</use>
				</value>
			</uniform>
		</pass>
	</technique>
</PropertyList>