Add layered clouds
This commit is contained in:
vmmeazza
parent
d14a2585c7
commit
1afa90694c
10 changed files with 550 additions and 0 deletions
112
Effects/cloud-models.eff
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112
Effects/cloud-models.eff
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<?xml version="1.0" encoding="utf-8"?>
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<PropertyList>
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<name>Effects/cloud-models</name>
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<parameters>
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<texture n ="0">
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<type>white</type>
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</texture>
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</parameters>
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<!--
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<technique n="10">
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<predicate>
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<and>
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<property>/sim/rendering/shader-effects</property>
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<or>
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<less-equal>
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<value type="float">2.0</value>
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<glversion/>
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</less-equal>
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<and>
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<extension-supported>GL_ARB_shader_objects</extension-supported>
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<extension-supported>GL_ARB_shading_language_100</extension-supported>
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<extension-supported>GL_ARB_vertex_shader</extension-supported>
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<extension-supported>GL_ARB_fragment_shader</extension-supported>
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</and>
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</or>
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</and>
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</predicate>
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<pass>
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<lighting>true</lighting>
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<material>
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<active><use>material/active</use></active>
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<ambient><use>material/ambient</use></ambient>
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<diffuse><use>material/diffuse</use></diffuse>
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<specular><use>material/specular</use></specular>
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<emissive><use>material/emissive</use></emissive>
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<shininess><use>material/shininess</use></shininess>
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<color-mode><use>material/color-mode</use></color-mode>
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</material>
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<blend>
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<active><use>blend/active</use></active>
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<source><use>blend/source</use></source>
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<destination><use>blend/destination</use></destination>
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</blend>
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<shade-model><use>shade-model</use></shade-model>
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<cull-face><use>cull-face</use></cull-face>
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<rendering-hint><use>rendering-hint</use></rendering-hint>
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<texture-unit> -->
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<!-- The texture unit is always active because the shaders expect
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that. -->
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<!--<unit>0</unit>-->
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<!-- If there is a texture, the type in the derived effect
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will be "2d". -->
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<!--<type><use>texture[0]/type</use></type>
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<image><use>texture[0]/image</use></image>
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<filter><use>texture[0]/filter</use></filter>
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<wrap-s><use>texture[0]/wrap-s</use></wrap-s>
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<wrap-t><use>texture[0]/wrap-t</use></wrap-t>-->
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<!--
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<internal-format>
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<use>texture[0]/internal-format</use>
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</internal-format>
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-->
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<!--</texture-unit>
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<program>
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<vertex-shader>Shaders/model-cloud.vert</vertex-shader>
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<fragment-shader>Shaders/default.frag</fragment-shader>
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</program>
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<uniform>
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<name>texture</name>
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<type>sampler-2d</type>
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<value type="int">0</value></uniform>
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</pass>
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</technique>-->
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<technique n="11">
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<pass>
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<lighting>true</lighting>
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<material>
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<active><use>material/active</use></active>
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<ambient><use>material/ambient</use></ambient>
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<diffuse><use>material/diffuse</use></diffuse>
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<specular><use>material/specular</use></specular>
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<emissive><use>material/emissive</use></emissive>
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<shininess><use>material/shininess</use></shininess>
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<color-mode><use>material/color-mode</use></color-mode>
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</material>
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<blend>
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<active><use>blend/active</use></active>
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<source><use>blend/source</use></source>
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<destination><use>blend/destination</use></destination>
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</blend>
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<shade-model><use>shade-model</use></shade-model>
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<cull-face><use>cull-face</use></cull-face>
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<rendering-hint><use>rendering-hint</use></rendering-hint>
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<texture-unit>
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<active><use>texture[0]/active</use></active>
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<unit>0</unit>
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<image><use>texture[0]/image</use></image>
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<filter><use>texture[0]/filter</use></filter>
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<wrap-s><use>texture[0]/wrap-s</use></wrap-s>
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<wrap-t><use>texture[0]/wrap-t</use></wrap-t>
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<!--
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<internal-format>
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<use>texture[0]/internal-format</use>
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</internal-format>
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-->
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<environment>
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<mode>modulate</mode>
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</environment>
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</texture-unit>
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</pass>
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</technique>
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</PropertyList>
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64
Effects/clouds-layered.eff
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64
Effects/clouds-layered.eff
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@ -0,0 +1,64 @@
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<?xml version="1.0" encoding="utf-8"?>
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<PropertyList>
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<name>Effects/clouds-layered</name>
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<parameters>
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<texture n ="0">
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</texture>
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</parameters>
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<technique n="10">
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<predicate>
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<and>
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<property>/sim/rendering/shader-effects</property>
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<less-equal>
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<value type="float">1.0</value>
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<shader-language/>
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</less-equal>
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</and>
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</predicate>
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<pass n="0">
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<!-- This is apparently not used, so maybe we'll blow it way soon. -->
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<lighting>true</lighting>
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<material>
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<ambient type="vec4d">0.5 0.5 0.5 1.0</ambient>
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<diffuse type="vec4d">0.5 0.5 0.5 1.0</diffuse>
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<color-mode>off</color-mode>
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</material>
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<alpha-test>
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<comparison>greater</comparison>
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<reference type="float">0.01</reference>
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</alpha-test>
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<shade-model>smooth</shade-model>
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<blend>
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<source>src-alpha</source>
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<destination>one-minus-src-alpha</destination>
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</blend>
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<depth>
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<write-mask>false</write-mask>
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</depth>
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<render-bin>
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<bin-number>10</bin-number>
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<bin-name>DepthSortedBin</bin-name>
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</render-bin>
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<texture-unit>
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<unit>0</unit>
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<type><use>texture[0]/type</use></type>
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<image><use>texture[0]/image</use></image>
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<filter><use>texture[0]/filter</use></filter>
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<wrap-s><use>texture[0]/wrap-s</use></wrap-s>
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<wrap-t><use>texture[0]/wrap-t</use></wrap-t>
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<!--<wrap-s>clamp</wrap-s>
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<wrap-t>clamp</wrap-t>-->
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</texture-unit>
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<program>
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<vertex-shader>Shaders/clouds-layered.vert</vertex-shader>
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<fragment-shader>Shaders/clouds-layered.frag</fragment-shader>
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</program>
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<uniform>
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<name>baseTexture</name>
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<type>sampler-2d</type>
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<value type="int">0</value>
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</uniform>
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<vertex-program-two-side>true</vertex-program-two-side>
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</pass>
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</technique>
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</PropertyList>
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64
Effects/clouds-thick.eff
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64
Effects/clouds-thick.eff
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@ -0,0 +1,64 @@
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<?xml version="1.0" encoding="utf-8"?>
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<PropertyList>
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<name>Effects/clouds-thick</name>
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<parameters>
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<texture n ="0">
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</texture>
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</parameters>
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<technique n="10">
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<predicate>
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<and>
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<property>/sim/rendering/shader-effects</property>
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<less-equal>
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<value type="float">1.0</value>
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<shader-language/>
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</less-equal>
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</and>
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</predicate>
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<pass n="0">
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<!-- This is apparently not used, so maybe we'll blow it way soon. -->
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<lighting>true</lighting>
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<material>
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<ambient type="vec4d">0.5 0.5 0.5 1.0</ambient>
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<diffuse type="vec4d">0.5 0.5 0.5 1.0</diffuse>
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<color-mode>off</color-mode>
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</material>
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<alpha-test>
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<comparison>greater</comparison>
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<reference type="float">0.01</reference>
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</alpha-test>
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<shade-model>smooth</shade-model>
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<blend>
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<source>src-alpha</source>
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<destination>one-minus-src-alpha</destination>
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</blend>
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<depth>
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<write-mask>false</write-mask>
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</depth>
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<render-bin>
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<bin-number>10</bin-number>
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<bin-name>DepthSortedBin</bin-name>
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</render-bin>
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<texture-unit>
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<unit>0</unit>
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<type><use>texture[0]/type</use></type>
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<image><use>texture[0]/image</use></image>
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<filter><use>texture[0]/filter</use></filter>
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<wrap-s><use>texture[0]/wrap-s</use></wrap-s>
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<wrap-t><use>texture[0]/wrap-t</use></wrap-t>
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<!--<wrap-s>clamp</wrap-s>
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<wrap-t>clamp</wrap-t>-->
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</texture-unit>
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<program>
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<vertex-shader>Shaders/clouds-thick.vert</vertex-shader>
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<fragment-shader>Shaders/clouds-thick.frag</fragment-shader>
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</program>
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<uniform>
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<name>baseTexture</name>
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<type>sampler-2d</type>
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<value type="int">0</value>
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</uniform>
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<vertex-program-two-side>true</vertex-program-two-side>
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</pass>
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</technique>
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</PropertyList>
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82
Effects/clouds-thin.eff
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82
Effects/clouds-thin.eff
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@ -0,0 +1,82 @@
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<?xml version="1.0" encoding="utf-8"?>
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<PropertyList>
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<name>Effects/clouds-thin</name>
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<parameters>
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<texture n ="0">
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</texture>
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</parameters>
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||||
<technique n="10">
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||||
<predicate>
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||||
<and>
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||||
<property>/sim/rendering/shader-effects</property>
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||||
<less-equal>
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||||
<value type="float">1.0</value>
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<shader-language/>
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</less-equal>
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</and>
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</predicate>
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<pass n="0">
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<!-- This is apparently not used, so maybe we'll blow it way soon. -->
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<lighting>true</lighting>
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<material>
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<ambient type="vec4d">0.5 0.5 0.5 1.0</ambient>
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<diffuse type="vec4d">0.5 0.5 0.5 1.0</diffuse>
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<color-mode>off</color-mode>
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</material>
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<alpha-test>
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<comparison>greater</comparison>
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<reference type="float">0.01</reference>
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</alpha-test>
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<shade-model>smooth</shade-model>
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<blend>
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<source>src-alpha</source>
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<destination>one-minus-src-alpha</destination>
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</blend>
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<depth>
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<write-mask>false</write-mask>
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</depth>
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<render-bin>
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<bin-number>10</bin-number>
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<bin-name>DepthSortedBin</bin-name>
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</render-bin>
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||||
<texture-unit>
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||||
<unit>0</unit>
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||||
<type>
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||||
<use>texture[0]/type</use>
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</type>
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<image>
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<use>texture[0]/image</use>
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</image>
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<filter>
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<use>texture[0]/filter</use>
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</filter>
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<wrap-s>
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<use>texture[0]/wrap-s</use>
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</wrap-s>
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<wrap-t>
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||||
<use>texture[0]/wrap-t</use>
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</wrap-t>
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<!--<wrap-s>clamp</wrap-s>
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<wrap-t>clamp</wrap-t>-->
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</texture-unit>
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<program>
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<vertex-shader>Shaders/clouds-thin.vert</vertex-shader>
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<fragment-shader>Shaders/clouds-thin.frag</fragment-shader>
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<!--<attribute>
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<name>usrAttr3</name>
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<index>10</index>
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</attribute>
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<attribute>
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<name>usrAttr4</name>
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<index>11</index>
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</attribute>-->
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</program>
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<uniform>
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<name>baseTexture</name>
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<type>sampler-2d</type>
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<value type="int">0</value>
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</uniform>
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<vertex-program-two-side>true</vertex-program-two-side>
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</pass>
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||||
</technique>
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</PropertyList>
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11
Shaders/clouds-layered.frag
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11
Shaders/clouds-layered.frag
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@ -0,0 +1,11 @@
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uniform sampler2D baseTexture;
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varying float fogFactor;
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void main(void)
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{
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vec4 base = texture2D( baseTexture, gl_TexCoord[0].st);
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vec4 finalColor = base * gl_Color;
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gl_FragColor.rgb = mix(gl_Fog.color.rgb, finalColor.rgb, fogFactor );
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gl_FragColor.a = mix(0.0, finalColor.a, fogFactor);
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}
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61
Shaders/clouds-layered.vert
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61
Shaders/clouds-layered.vert
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@ -0,0 +1,61 @@
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// -*-C++-*-
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#version 120
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varying float fogFactor;
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float shade = 0.2;
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float cloud_height = 3000.0;
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void main(void)
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{
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gl_TexCoord[0] = gl_TextureMatrix[0] * gl_MultiTexCoord0;
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vec4 ep = gl_ModelViewMatrixInverse * vec4(0.0,0.0,0.0,1.0);
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vec4 l = gl_ModelViewMatrixInverse * vec4(0.0,0.0,1.0,1.0);
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vec3 u = normalize(ep.xyz - l.xyz);
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// Find a rotation matrix that rotates 1,0,0 into u. u, r and w are
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// the columns of that matrix.
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vec3 absu = abs(u);
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vec3 r = normalize(vec3(-u.y, u.x, 0));
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vec3 w = cross(u, r);
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// Do the matrix multiplication by [ u r w pos]. Assume no
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// scaling in the homogeneous component of pos.
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gl_Position = vec4(0.0, 0.0, 0.0, 1.0);
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gl_Position.xyz = gl_Vertex.x * u;
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gl_Position.xyz += gl_Vertex.y * r * 1.0;
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gl_Position.xyz += gl_Vertex.z * w * 0.4;
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//gl_Position.xyz += gl_Vertex.y * r * wScale;
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//gl_Position.xyz += gl_Vertex.z * w * hScale;
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gl_Position.xyz += gl_Color.xyz;
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// Determine a lighting normal based on the vertex position from the
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// center of the cloud, so that sprite on the opposite side of the cloud to the sun are darker.
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float n = dot(normalize(-gl_LightSource[0].position.xyz),
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normalize(mat3x3(gl_ModelViewMatrix) * (- gl_Position.xyz)));;
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// Determine the position - used for fog and shading calculations
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vec3 ecPosition = vec3(gl_ModelViewMatrix * gl_Position);
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float fogCoord = abs(ecPosition.z);
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float fract = smoothstep(0.0, cloud_height, gl_Position.z + cloud_height);
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// Final position of the sprite
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gl_Position = gl_ModelViewProjectionMatrix * gl_Position;
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// Determine the shading of the sprite based on its vertical position and position relative to the sun.
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n = min(smoothstep(-0.5, 0.0, n), fract);
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// Determine the shading based on a mixture from the backlight to the front
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vec4 backlight = gl_LightSource[0].diffuse * shade;
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gl_FrontColor = mix(backlight, gl_LightSource[0].diffuse, n);
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gl_FrontColor += gl_FrontLightModelProduct.sceneColor;
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// As we get within 100m of the sprite, it is faded out. Equally at large distances it also fades out.
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gl_FrontColor.a = min(smoothstep(100.0, 300.0, fogCoord), 1 - smoothstep(25000.0, 30000.0, fogCoord));
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gl_BackColor = gl_FrontColor;
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// Fog doesn't affect clouds as much as other objects.
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fogFactor = exp( -gl_Fog.density * fogCoord * 0.2);
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fogFactor = clamp(fogFactor, 0.0, 1.0);
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}
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11
Shaders/clouds-thick.frag
Normal file
11
Shaders/clouds-thick.frag
Normal file
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@ -0,0 +1,11 @@
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uniform sampler2D baseTexture;
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varying float fogFactor;
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void main(void)
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{
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vec4 base = texture2D( baseTexture, gl_TexCoord[0].st);
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vec4 finalColor = base * gl_Color;
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||||
gl_FragColor.rgb = mix(gl_Fog.color.rgb, finalColor.rgb, fogFactor );
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||||
gl_FragColor.a = mix(0.0, finalColor.a, fogFactor);
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}
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62
Shaders/clouds-thick.vert
Normal file
62
Shaders/clouds-thick.vert
Normal file
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@ -0,0 +1,62 @@
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// -*-C++-*-
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#version 120
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varying float fogFactor;
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float shade = 0.5;
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float cloud_height = 1000.0;
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||||
void main(void)
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||||
{
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gl_TexCoord[0] = gl_TextureMatrix[0] * gl_MultiTexCoord0;
|
||||
//gl_TexCoord[0] = gl_MultiTexCoord0 + vec4(textureIndexX, textureIndexY, 0.0, 0.0);
|
||||
vec4 ep = gl_ModelViewMatrixInverse * vec4(0.0,0.0,0.0,1.0);
|
||||
vec4 l = gl_ModelViewMatrixInverse * vec4(0.0,0.0,1.0,1.0);
|
||||
vec3 u = normalize(ep.xyz - l.xyz);
|
||||
|
||||
// Find a rotation matrix that rotates 1,0,0 into u. u, r and w are
|
||||
// the columns of that matrix.
|
||||
vec3 absu = abs(u);
|
||||
vec3 r = normalize(vec3(-u.y, u.x, 0));
|
||||
vec3 w = cross(u, r);
|
||||
|
||||
// Do the matrix multiplication by [ u r w pos]. Assume no
|
||||
// scaling in the homogeneous component of pos.
|
||||
gl_Position = vec4(0.0, 0.0, 0.0, 1.0);
|
||||
gl_Position.xyz = gl_Vertex.x * u;
|
||||
gl_Position.xyz += gl_Vertex.y * r;
|
||||
gl_Position.xyz += gl_Vertex.z * w;
|
||||
//gl_Position.xyz += gl_Vertex.y * r * wScale;
|
||||
//gl_Position.xyz += gl_Vertex.z * w * hScale;
|
||||
gl_Position.xyz += gl_Color.xyz;
|
||||
|
||||
// Determine a lighting normal based on the vertex position from the
|
||||
// center of the cloud, so that sprite on the opposite side of the cloud to the sun are darker.
|
||||
float n = dot(normalize(-gl_LightSource[0].position.xyz),
|
||||
normalize(mat3x3(gl_ModelViewMatrix) * (- gl_Position.xyz)));;
|
||||
|
||||
// Determine the position - used for fog and shading calculations
|
||||
vec3 ecPosition = vec3(gl_ModelViewMatrix * gl_Position);
|
||||
float fogCoord = abs(ecPosition.z);
|
||||
float fract = smoothstep(0.0, cloud_height, gl_Position.z + cloud_height);
|
||||
|
||||
// Final position of the sprite
|
||||
gl_Position = gl_ModelViewProjectionMatrix * gl_Position;
|
||||
|
||||
// Determine the shading of the sprite based on its vertical position and position relative to the sun.
|
||||
n = min(smoothstep(-0.5, 0.0, n), fract);
|
||||
// Determine the shading based on a mixture from the backlight to the front
|
||||
vec4 backlight = gl_LightSource[0].diffuse * shade;
|
||||
|
||||
gl_FrontColor = mix(backlight, gl_LightSource[0].diffuse, n);
|
||||
gl_FrontColor += gl_FrontLightModelProduct.sceneColor;
|
||||
|
||||
// As we get within 100m of the sprite, it is faded out. Equally at large distances it also fades out.
|
||||
gl_FrontColor.a = min(smoothstep(10.0, 100.0, fogCoord), 1 - smoothstep(15000.0, 20000.0, fogCoord));
|
||||
gl_BackColor = gl_FrontColor;
|
||||
|
||||
// Fog doesn't affect clouds as much as other objects.
|
||||
fogFactor = exp( -gl_Fog.density * fogCoord * 0.2);
|
||||
fogFactor = clamp(fogFactor, 0.0, 1.0);
|
||||
}
|
||||
11
Shaders/clouds-thin.frag
Normal file
11
Shaders/clouds-thin.frag
Normal file
|
|
@ -0,0 +1,11 @@
|
|||
uniform sampler2D baseTexture;
|
||||
varying float fogFactor;
|
||||
|
||||
void main(void)
|
||||
{
|
||||
vec4 base = texture2D( baseTexture, gl_TexCoord[0].st);
|
||||
vec4 finalColor = base * gl_Color;
|
||||
gl_FragColor.rgb = mix(gl_Fog.color.rgb, finalColor.rgb, fogFactor );
|
||||
gl_FragColor.a = mix(0.0, finalColor.a, fogFactor);
|
||||
}
|
||||
|
||||
72
Shaders/clouds-thin.vert
Normal file
72
Shaders/clouds-thin.vert
Normal file
|
|
@ -0,0 +1,72 @@
|
|||
// -*-C++-*-
|
||||
#version 120
|
||||
|
||||
varying float fogFactor;
|
||||
|
||||
//attribute vec3 usrAttr3;
|
||||
//attribute vec3 usrAttr4;
|
||||
|
||||
//float textureIndexX = usrAttr3.r;
|
||||
//float textureIndexY = usrAttr3.g;
|
||||
//float wScale = usrAttr3.b;
|
||||
//float hScale = usrAttr4.r;
|
||||
//float shade = usrAttr4.g;
|
||||
//float cloud_height = usrAttr4.b;
|
||||
|
||||
void main(void)
|
||||
{
|
||||
|
||||
float shade = 0.9;
|
||||
float cloud_height = 1000.0;
|
||||
|
||||
gl_TexCoord[0] = gl_TextureMatrix[0] * gl_MultiTexCoord0;
|
||||
//gl_TexCoord[0] = gl_MultiTexCoord0 + vec4(textureIndexX, textureIndexY, 0.0, 0.0);
|
||||
vec4 ep = gl_ModelViewMatrixInverse * vec4(0.0,0.0,0.0,1.0);
|
||||
vec4 l = gl_ModelViewMatrixInverse * vec4(0.0,0.0,1.0,1.0);
|
||||
vec3 u = normalize(ep.xyz - l.xyz);
|
||||
|
||||
// Find a rotation matrix that rotates 1,0,0 into u. u, r and w are
|
||||
// the columns of that matrix.
|
||||
vec3 absu = abs(u);
|
||||
vec3 r = normalize(vec3(-u.y, u.x, 0));
|
||||
vec3 w = cross(u, r);
|
||||
|
||||
// Do the matrix multiplication by [ u r w pos]. Assume no
|
||||
// scaling in the homogeneous component of pos.
|
||||
gl_Position = vec4(0.0, 0.0, 0.0, 1.0);
|
||||
gl_Position.xyz = gl_Vertex.x * u;
|
||||
gl_Position.xyz += gl_Vertex.y * r * 0.25;
|
||||
gl_Position.xyz += gl_Vertex.z * w * 0.25;
|
||||
//gl_Position.xyz += gl_Vertex.y * r * wScale;
|
||||
//gl_Position.xyz += gl_Vertex.z * w * hScale;
|
||||
gl_Position.xyz += gl_Color.xyz;
|
||||
|
||||
// Determine a lighting normal based on the vertex position from the
|
||||
// center of the cloud, so that sprite on the opposite side of the cloud to the sun are darker.
|
||||
float n = dot(normalize(-gl_LightSource[0].position.xyz),
|
||||
normalize(mat3x3(gl_ModelViewMatrix) * (- gl_Position.xyz)));;
|
||||
|
||||
// Determine the position - used for fog and shading calculations
|
||||
vec3 ecPosition = vec3(gl_ModelViewMatrix * gl_Position);
|
||||
float fogCoord = abs(ecPosition.z);
|
||||
float fract = smoothstep(0.0, cloud_height, gl_Position.z + cloud_height);
|
||||
|
||||
// Final position of the sprite
|
||||
gl_Position = gl_ModelViewProjectionMatrix * gl_Position;
|
||||
|
||||
// Determine the shading of the sprite based on its vertical position and position relative to the sun.
|
||||
n = min(smoothstep(-0.5, 0.0, n), fract);
|
||||
// Determine the shading based on a mixture from the backlight to the front
|
||||
vec4 backlight = gl_LightSource[0].diffuse * shade;
|
||||
|
||||
gl_FrontColor = mix(backlight, gl_LightSource[0].diffuse, n);
|
||||
gl_FrontColor += gl_FrontLightModelProduct.sceneColor;
|
||||
|
||||
// As we get within 100m of the sprite, it is faded out. Equally at large distances it also fades out.
|
||||
gl_FrontColor.a = min(smoothstep(10.0, 100.0, fogCoord), 1 - smoothstep(15000.0, 20000.0, fogCoord));
|
||||
gl_BackColor = gl_FrontColor;
|
||||
|
||||
// Fog doesn't affect clouds as much as other objects.
|
||||
fogFactor = exp( -gl_Fog.density * fogCoord * 0.2);
|
||||
fogFactor = clamp(fogFactor, 0.0, 1.0);
|
||||
}
|
||||
Loading…
Reference in a new issue