Merge branch 'master' of gitorious.org:fg/fgdata
This commit is contained in:
commit
e21cee5a87
4 changed files with 262 additions and 1 deletions
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@ -778,7 +778,9 @@
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<property>aero/qbar-psf</property>
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<property>aero/qbar-psf</property>
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<property>metrics/Sw-sqft</property>
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<property>metrics/Sw-sqft</property>
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<property>metrics/cbarw-ft</property>
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<property>metrics/cbarw-ft</property>
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<property>aero/alpha-rad</property>
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<sin>
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<property>aero/alpha-rad</property>
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</sin>
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<value>-1.8000</value>
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<value>-1.8000</value>
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</product>
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</product>
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</function>
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</function>
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145
Effects/lightmap.eff
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145
Effects/lightmap.eff
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<?xml version="1.0" encoding="utf-8"?>
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<PropertyList>
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<name>Effects/lightmap</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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<vertex-program-two-side type="bool">false</vertex-program-two-side>
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<material>
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<color-mode-uniform>1</color-mode-uniform> <!-- DIFFUSE -->
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</material>
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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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<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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<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>1</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[1]/type</use></type>
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<image><use>texture[1]/image</use></image>
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<filter>linear-mipmap-linear</filter>
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<wrap-s>repeat</wrap-s>
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<wrap-t>repeat</wrap-t>
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</texture-unit>
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<vertex-program-two-side>
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<use>vertex-program-two-side</use>
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</vertex-program-two-side>
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<program>
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<vertex-shader>Shaders/lightmap.vert</vertex-shader>
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<fragment-shader>Shaders/lightmap.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>
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</uniform>
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<uniform>
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<name>lightmap_texture</name>
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<type>sampler-2d</type>
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<value type="int">1</value>
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</uniform>
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<uniform>
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<name>colorMode</name>
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<type>int</type>
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<value><use>material/color-mode-uniform</use></value>
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</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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<!-- A two-sided lighting model is set by default near the root
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of the scene graph. Perhaps that ought to be set in this
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effect?
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-->
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</pass>
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</technique>
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</PropertyList>
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56
Shaders/lightmap.frag
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56
Shaders/lightmap.frag
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@ -0,0 +1,56 @@
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// -*-C++-*-
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// Ambient term comes in gl_Color.rgb.
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//
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// See http://wiki.flightgear.org/index.php/Howto:_Lightmap for details on
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// how to use it.
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varying vec4 diffuse_term;
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varying vec3 normal;
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varying float fogCoord;
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uniform sampler2D texture;
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uniform sampler2D lightmap_texture;
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float luminance(vec3 color)
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{
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return dot(vec3(0.212671, 0.715160, 0.072169), color);
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}
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void main()
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{
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vec3 n, halfV;
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float NdotL, NdotHV, fogFactor;
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vec4 color = gl_Color;
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vec3 lightDir = gl_LightSource[0].position.xyz;
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vec3 halfVector = gl_LightSource[0].halfVector.xyz;
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vec4 texel;
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vec4 fragColor;
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vec4 specular = vec4(0.0);
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n = normalize(normal);
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// If gl_Color.a == 0, this is a back-facing polygon and the
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// normal should be reversed.
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n = (2.0 * gl_Color.a - 1.0) * n;
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NdotL = max(dot(n, lightDir), 0.0);
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if (NdotL > 0.0) {
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color += diffuse_term * NdotL;
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halfV = halfVector;
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NdotHV = max(dot(n, halfV), 0.0);
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if (gl_FrontMaterial.shininess > 0.0)
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specular.rgb = (gl_FrontMaterial.specular.rgb
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* gl_LightSource[0].specular.rgb
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* pow(NdotHV, gl_FrontMaterial.shininess));
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}
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color.a = diffuse_term.a;
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// This shouldn't be necessary, but our lighting becomes very
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// saturated. Clamping the color before modulating by the texture
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// is closer to what the OpenGL fixed function pipeline does.
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color = clamp(color, 0.0, 1.0);
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texel = texture2D(texture, gl_TexCoord[0].st);
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fragColor = color * texel + specular;
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vec3 lightmapTexel = texture2D(lightmap_texture, gl_TexCoord[0].st).rgb;
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fragColor.rgb = max(fragColor.rgb, lightmapTexel * gl_FrontMaterial.diffuse.rgb * texel.rgb);
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fogFactor = exp(-gl_Fog.density * gl_Fog.density * fogCoord * fogCoord);
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gl_FragColor = mix(gl_Fog.color, fragColor, fogFactor);
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}
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58
Shaders/lightmap.vert
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58
Shaders/lightmap.vert
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// -*-C++-*-
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// Shader that uses OpenGL state values to do per-pixel lighting
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//
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// The only light used is gl_LightSource[0], which is assumed to be
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// directional.
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//
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// Diffuse colors come from the gl_Color, ambient from the material. This is
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// equivalent to osg::Material::DIFFUSE.
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//
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// See http://wiki.flightgear.org/index.php/Howto:_Lightmap for details on
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// how to use it.
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#define MODE_OFF 0
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#define MODE_DIFFUSE 1
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#define MODE_AMBIENT_AND_DIFFUSE 2
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// The constant term of the lighting equation that doesn't depend on
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// the surface normal is passed in gl_{Front,Back}Color. The alpha
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// component is set to 1 for front, 0 for back in order to work around
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// bugs with gl_FrontFacing in the fragment shader.
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varying vec4 diffuse_term;
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varying vec3 normal;
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varying float fogCoord;
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uniform int colorMode;
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void main()
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{
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vec4 ecPosition = gl_ModelViewMatrix * gl_Vertex;
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gl_Position = ftransform();
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gl_TexCoord[0] = gl_TextureMatrix[0] * gl_MultiTexCoord0;
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normal = gl_NormalMatrix * gl_Normal;
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vec4 ambient_color, diffuse_color;
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if (colorMode == MODE_DIFFUSE) {
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diffuse_color = gl_Color;
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ambient_color = gl_FrontMaterial.ambient;
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} else if (colorMode == MODE_AMBIENT_AND_DIFFUSE) {
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diffuse_color = gl_Color;
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ambient_color = gl_Color;
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} else {
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diffuse_color = gl_FrontMaterial.diffuse;
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ambient_color = gl_FrontMaterial.ambient;
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}
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diffuse_term = diffuse_color * gl_LightSource[0].diffuse;
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vec4 constant_term = gl_FrontMaterial.emission + ambient_color *
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(gl_LightModel.ambient + gl_LightSource[0].ambient);
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// Super hack: if diffuse material alpha is less than 1, assume a
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// transparency animation is at work
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if (gl_FrontMaterial.diffuse.a < 1.0)
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diffuse_term.a = gl_FrontMaterial.diffuse.a;
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else
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diffuse_term.a = gl_Color.a;
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// Another hack for supporting two-sided lighting without using
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// gl_FrontFacing in the fragment shader.
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gl_FrontColor.rgb = constant_term.rgb; gl_FrontColor.a = 1.0;
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gl_BackColor.rgb = constant_term.rgb; gl_BackColor.a = 0.0;
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fogCoord = abs(ecPosition.z / ecPosition.w);
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}
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Add table
Reference in a new issue