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Add mapping and noise

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vmmeazza 2010-04-02 14:02:48 +00:00
parent b33e332709
commit 1b49358d0d
3 changed files with 109 additions and 16 deletions
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87
Effects/reflect.eff
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@ -9,13 +9,16 @@ varying the material shininess value over or between objects the amount of
refection can be controlled. The overall amount of reflection may be
adjusted by the use of <refl_correction> -1.0 (fully transparent)- 1.0 (fully opaque).
The overall values of the coloured fringing or fresnel effect may be adjusted
by the use of <rainbowiness> and <fresneliness>.
The overall values of the noisiness, coloured fringing or fresnel effect may be adjusted
by the use of <noisiness>, <rainbowiness> and <fresneliness>.
If your result is too dark/too light the overall ambient light value can be adjusted
by the use of <ambient_correction>. This correction also takes out some of the blueness
added as default to compensate for the lack of reflection.
To use a reflection map set <reflect_map> to 1,and the path to the map texture in
<texture n="8">
USE: To use the default reflection effect (controlled by material shininess values) use
<effect>
@ -49,7 +52,7 @@ EXAMPLES: You can find examples of both usages in the Hunter and Lightning model
<texture n="5">
<type>cubemap</type>
<!-- use this form for a cube cross -->
<!--<image>Aircraft/Generic/Effects/CubeCrosses/blue_sky.jpg</image>-->
<!--<image>Aircraft/Generic/Effects/CubeCrosses/blue_sky_big.jpg</image>-->
<!-- use this form for a 6 image cube map -->
<images>
@ -76,12 +79,21 @@ EXAMPLES: You can find examples of both usages in the Hunter and Lightning model
<wrap-t>repeat</wrap-t>
<internal-format>normalized</internal-format>
</texture>
<texture n="8">
<image>Aircraft/737-300/Models/Effects/733LH.ReflectionMap3.png</image>
<filter>linear-mipmap-linear</filter>
<wrap-s>repeat</wrap-s>
<wrap-t>repeat</wrap-t>
<internal-format>normalized</internal-format>
</texture>
<rendering-hint>transparent</rendering-hint>
<shade-model>smooth</shade-model>
<rainbowiness>0.075</rainbowiness>
<fresneliness>0.075</fresneliness>
<rainbowiness type="float">0.01</rainbowiness>
<fresneliness>0.1</fresneliness>
<noisiness>0.25</noisiness>
<refl_correction>0.0</refl_correction>
<ambient_correction>0.1</ambient_correction>
<ambient_correction>0.05</ambient_correction>
<reflect_map>0</reflect_map>
</parameters>
<technique n="9">
@ -224,6 +236,31 @@ EXAMPLES: You can find examples of both usages in the Hunter and Lightning model
</wrap-t>
</texture-unit>
<texture-unit>
<unit>8</unit>
<image>
<use>texture[8]/image</use>
</image>
<filter>
<use>texture[8]/filter</use>
</filter>
<wrap-s>
<use>texture[8]/wrap-s</use>
</wrap-s>
<wrap-t>
<use>texture[8]/wrap-t</use>
</wrap-t>
<internal-format>
<use>texture[0]/internal-format</use>
</internal-format>
</texture-unit>
<texture-unit>
<unit>9</unit>
<type>noise</type>
</texture-unit>
<program>
<vertex-shader>Shaders/reflect.vert</vertex-shader>
<fragment-shader>Shaders/reflect.frag</fragment-shader>
@ -265,19 +302,43 @@ EXAMPLES: You can find examples of both usages in the Hunter and Lightning model
<value type="int">7</value>
</uniform>
<uniform>
<name>Map</name>
<type>sampler-2d</type>
<value type="int">8</value>
</uniform>
<uniform>
<name>Noise</name>
<type>sampler-3d</type>
<value type="int">9</value>
</uniform>
<!-- set the amount of fringing colour 0.0 - 1.0 -->
<uniform>
<name>rainbowiness</name>
<type>float</type>
<value><use>rainbowiness</use></value>
<value>
<use>rainbowiness</use>
</value>
</uniform>
<!-- set the amount of fresnel effect colour 0.0 - 1.0 -->
<uniform>
<name>fresneliness</name>
<type>float</type>
<value><use>fresneliness</use></value>
<value>
<use>fresneliness</use>
</value>
</uniform>
<!-- set the amount of noisiness 0.0 - 1.0 -->
<uniform>
<name>noisiness</name>
<type>float</type>
<value>
<use>noisiness</use>
</value>
</uniform>
<!-- The reflection is set proportional to the shininess of the material.
@ -299,6 +360,16 @@ EXAMPLES: You can find examples of both usages in the Hunter and Lightning model
<use>ambient_correction</use>
</value>
</uniform>
<!-- use a reflection map-->
<uniform>
<name>reflect_map</name>
<type>float</type>
<value>
<use>reflect_map</use>
</value>
</uniform>noisiness
</pass>
</technique>
</PropertyList>

34
Shaders/reflect.frag
View file

@ -4,6 +4,7 @@
#version 120
varying vec4 rawpos;
varying vec4 ecPosition;
varying vec3 VNormal;
varying vec3 Normal;
@ -19,12 +20,15 @@ uniform samplerCube Environment;
uniform sampler2D Rainbow;
uniform sampler2D BaseTex;
uniform sampler2D Fresnel;
uniform sampler2D Map;
uniform sampler3D Noise;
uniform float refl_correction;
uniform float rainbowiness;
uniform float fresneliness;
uniform float noisiness;
uniform float ambient_correction;
uniform float reflect_map;
void main (void)
{
@ -75,21 +79,37 @@ void main (void)
// map the refection of the environment
vec4 reflection = textureCube(Environment, reflVec);
// set the reflectivity proportional to shininess with user
// input ambient
// set the user shininess offse
float transparency_offset = clamp(refl_correction, -1.0, 1.0);
float reflFactor = (gl_FrontMaterial.shininess / 128) + transparency_offset;
float reflFactor = 0.0;
if(reflect_map > 0){
// map the shininess of the object with user input
vec4 map = texture2D(Map, gl_TexCoord[0].st);
//float pam = (map.a * -2) + 1; //reverse map
reflFactor = map.a + transparency_offset;
} else {
// set the reflectivity proportional to shininess with user
// input
reflFactor = (gl_FrontMaterial.shininess / 128) + transparency_offset;
}
reflFactor = clamp(reflFactor, 0.0, 1.0);
// set adjust ambient ambient
// set adjust ambient
float ambient_offset = clamp(ambient_correction, -1.0, 1.0);
vec4 ambient_Correction = mix(gl_LightSource[0].ambient, vec4(1.0, 1.0, 0.9, 1.0), 0.5)
vec4 ambient_Correction = mix(gl_LightSource[0].ambient, vec4(1.0, 1.0, 0.6, 1.0), 0.5)
* ambient_offset;
// map noise vectore
vec4 noisevec = texture3D(Noise, rawpos.xyz);
// add fringing fresnel and rainbow effects and modulate by reflection
vec4 reflcolor = mix(reflection, rainbow, rainbowiness * v);
vec4 reflfrescolor = mix(reflcolor, fresnel, fresneliness * v);
vec4 raincolor = vec4(reflfrescolor.rgb, 1.0) * reflFactor;
vec4 noisecolor = mix(reflfrescolor, noisevec, noisiness);
vec4 raincolor = vec4(noisecolor.rgb, 1.0) * reflFactor;
vec4 mixedcolor = mix(texel, raincolor, reflFactor);
// the final reflection

4
Shaders/reflect.vert
View file

@ -1,7 +1,8 @@
// -*- mode: C; -*-
// Licence: GPL v2
// Author: Vivian Meazza.
// Author: Vivian Meazza.
varying vec4 rawpos;
varying vec4 ecPosition;
varying vec3 VNormal;
varying vec3 Normal;
@ -19,6 +20,7 @@ uniform mat4 osg_ViewMatrixInverse;
void main(void)
{
rawpos = gl_Vertex;
ecPosition = gl_ModelViewMatrix * gl_Vertex;
vec3 ecPosition3 = vec3(gl_ModelViewMatrix * gl_Vertex) / ecPosition.w;