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fgdata/Effects/tree.eff
Stuart Buchanan 2f123b7100 Make random buildings compatible with the atmospheric scattering shader. 
Also remove redundant test parameters from the tree effect.
2012-06-30 20:37:08 +01:00

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<?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>
<mysnow_level><use>/environment/mysnow-level-m</use></mysnow_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="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>
<render-bin>
<bin-number>-1</bin-number>
<bin-name>RenderBin</bin-name>
</render-bin>
<blend>
<source>src-alpha</source>
<destination>one-minus-src-alpha</destination>
</blend>
<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>texture</name>
<type>sampler-2d</type>
<value type="int">0</value>
</uniform>
<color-mask type="vec4d">0 0 0 0</color-mask>
</pass>
<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>
<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="9">
<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="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>
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