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Added new parameters to reflexion lines shader (thanks to Simon Boye' for submitting the patches)

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Paolo Cignoni cignoni 2010-09-02 06:20:15 +00:00
parent ebcf48ba55
commit 873ee8557f
2 changed files with 22 additions and 7 deletions
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17
src/distrib/shaders/reflexion_lines.frag
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@ -31,6 +31,11 @@ varying vec3 Normal;
uniform float ScaleFactor;
uniform float Smoothing;
uniform float Shading;
float arcSinus(float x) {
return x * (1 + x*x * ((1.0/6.0) + x*x * ((3.0/40.0) + (15.0/336.0)*x*x)));
}
void main (void)
{
@ -44,8 +49,14 @@ void main (void)
reflexionVector.z = 0.5/sqrt(dot(reflexionVector,reflexionVector));
reflexionVector.xy = (reflexionVector.xy*reflexionVector.z) + 0.5;
reflexionVector *= 2.0;
color = vec4(clamp(0.5 + Smoothing * sin(2.0 * 3.1428 * reflexionVector.x*ScaleFactor), 0.0, 1.0));
// color = vec4(clamp(0.5 + Smoothing * sin(2.0 * 3.1428 * reflexionVector.x*ScaleFactor), 0.0, 1.0),
// clamp(0.5 + Smoothing * sin(2.0 * 3.1428 * reflexionVector.y*ScaleFactor), 0.0, 1.0),
// clamp(0.5 + Smoothing * sin(2.0 * 3.1428 * reflexionVector.z*ScaleFactor), 0.0, 1.0),
// 1.0);
float sharpness = 1.0/arcSinus(Smoothing*fwidth(reflexionVector.x)*2.0*ScaleFactor);
color = vec4(clamp(0.5 + sharpness * sin(2.0 * 3.1428 * reflexionVector.x*ScaleFactor), 0.0, 1.0));
color.a = 1.0;
gl_FragColor = min(color, vec4(1.0,1.0,1.0,1.0));
gl_FragColor = vec4(vec3(sharpness), 1.0);
gl_FragColor = clamp(dot(gl_LightSource[0].position.xyz, n)*Shading + (1.0-Shading), 0.0, 1.0) * min(color, vec4(1.0,1.0,1.0,1.0));
}

12
src/distrib/shaders/reflexion_lines.gdp
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@ -42,13 +42,17 @@
</FPCount>
<TexturesPlugins NumberOfPlugins="0" />
<TexturedUsed NumberUsedTU="0" />
<UniformVariables NumberOfVariables="1">
<UniformVariables NumberOfVariables="3">
<Uniform0 Type="5" Name="ScaleFactor" ArraySize="1" Widget="2" Min="0" Max="100" Step="1">
<Values Value0="5" />
<Values Value0="25" />
</Uniform0>
<Uniform0 Type="5" Name="Smoothing" ArraySize="1" Widget="2" Min="0.5" Max="10" Step="1">
<Values Value0="1" />
<Values Value0="3" />
</Uniform0>
<Uniform0 Type="5" Name="Shading" ArraySize="1" Widget="2" Min="0.0" Max="1.0" Step="0.05">
<Values Value0="0.8" />
</Uniform0>
</UniformVariables>
@ -64,4 +68,4 @@
<BackMaterial AmbR="0.2" AmbG="0.2" AmbB="0.2" AmbA="1" DifR="0.2" DifG="0.2" DifB="0.2" DifA="1" SpecR="0.2" SpecG="0.2" SpecB="0.2" SpecA="1" EmiR="0.2" EmiG="0.2" EmiB="0.2" EmiA="1" Shininess="0" />
<PointParameters Size="1" MinSize="0" MaxSize="1" Threshold="1" ConstantAttenuation="1" LinearAttenuation="0" QuadraticAttenuation="0" />
</BuiltInStates>
</GLSLang>
</GLSLang>