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minnaert reflection model

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Massimiliano Corsini maxcorsini 2006-10-10 14:28:47 +00:00
parent 81afa5716c
commit ea57679d92
3 changed files with 94 additions and 0 deletions
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26
src/meshlab/shaders/minnaert.frag Normal file
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//
// Minnaert reflection model (per-pixel)
//
// by
// Massimiliano Corsini
// Visual Computing Lab (2006)
//
varying vec3 normal;
varying vec3 vpos;
void main (void)
{
vec3 N = normalize(normal);
vec3 V = normalize(-vpos);
vec3 L = normalize(gl_LightSource[0].position.xyz - vpos);
// diffuse color
vec4 kd = gl_LightSource[0].diffuse * gl_FrontMaterial.diffuse;
// Minnaert reflection model
float NdotV = dot(N,V);
float NdotL = dot(N,L);
gl_FragColor = max(0.0, NdotV * NdotL) * kd;
}

46
src/meshlab/shaders/minnaert.gdp Normal file
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<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<GLSLang>
<Metadata>
<Author Author="" />
<Email Email="" />
<Company Company="" />
<Shader Shader="" />
<ShaderDescription ShaderDescription="" />
<License License="" />
<Version Version="" />
</Metadata>
<VPCount numero="1">
<Filenames>
<Filename0 VertexProgram=".\minnaert.vert" />
</Filenames>
</VPCount>
<FPCount numero="1">
<Filenames>
<Filename0 FragmentProgram=".\minnaert.frag" />
</Filenames>
</FPCount>
<TexturesPlugins NumberOfPlugins="0" />
<TexturedUsed NumberUsedTU="0" />
<UniformVariables NumberOfVariables="0" />
<FogParameters FogColorR="0" FogColorG="0" FogColorB="0" FogColorA="1" Density="1" Start="0" End="1" />
<VertexProcessor CullFace="False" PolygonMode="DummieField" PolygonModeBack="6914" PolygonModeFront="6914" LocalValue="1" TwoSidedValue="0" ColorControlValue="33273" />
<FragmentProcessor Shade="7425" AlphaTest="False" AlphaFunc="516" AlphaClamp="0.5" Blending="False" BlendFuncSRC="770" BlendFuncDST="771" BlendEquation="32774" DepthTest="True" DepthFunc="515" ClampNear="0" ClampFar="1" ClearColorR="0.5019608" ClearColorG="0.5019608" ClearColorB="0.5019608" ClearColorA="1" />
<MotionData Speed="0.05" Distance="4" Rotation="True" />
<BuiltInStates>
<ModelAmbient AmbientR="0" AmbientG="0" AmbientB="0" AmbientA="1" />
<FrontMaterial AmbR="0.2" AmbG="0.2" AmbB="0.2" AmbA="1" DifR="0.9450981" DifG="0.937255" DifB="0.8862746" DifA="1" SpecR="1" SpecG="1" SpecB="1" SpecA="1" EmiR="0" EmiG="0" EmiB="0" EmiA="1" Shininess="10" />
<BackMaterial AmbR="0.2" AmbG="0.2" AmbB="0.2" AmbA="1" DifR="0" DifG="0" DifB="0" DifA="1" SpecR="0" SpecG="0" SpecB="0" SpecA="1" EmiR="0" EmiG="0" EmiB="0" EmiA="1" Shininess="0" />
<PointParameters Size="1" MinSize="0" MaxSize="1" Threshold="1" ConstantAttenuation="1" LinearAttenuation="0" QuadraticAttenuation="0" />
<Light0 Enabled="True" PosX="0" PosY="0" PosZ="-1" PosW="0" AmbR="0" AmbG="0" AmbB="0" AmbA="1" DifR="1" DifG="1" DifB="1" DifA="1" SpecR="1" SpecG="1" SpecB="1" SpecA="1" SpotDirX="0" SpotDirY="0" SpotDirZ="-1" SpotExp="0" SpotCutoff="180" SpotConstant="1" SpotLinear="0" SpotQuadratic="0" />
<Light1 Enabled="False" PosX="0" PosY="0" PosZ="1" PosW="0" AmbR="0" AmbG="0" AmbB="0" AmbA="1" DifR="0" DifG="0" DifB="0" DifA="1" SpecR="0" SpecG="0" SpecB="0" SpecA="1" SpotDirX="0" SpotDirY="0" SpotDirZ="-1" SpotExp="0" SpotCutoff="180" SpotConstant="1" SpotLinear="0" SpotQuadratic="0" />
<Light2 Enabled="False" PosX="0" PosY="0" PosZ="1" PosW="0" AmbR="0" AmbG="0" AmbB="0" AmbA="1" DifR="0" DifG="0" DifB="0" DifA="1" SpecR="0" SpecG="0" SpecB="0" SpecA="1" SpotDirX="0" SpotDirY="0" SpotDirZ="-1" SpotExp="0" SpotCutoff="180" SpotConstant="1" SpotLinear="0" SpotQuadratic="0" />
<Light3 Enabled="False" PosX="0" PosY="0" PosZ="1" PosW="0" AmbR="0" AmbG="0" AmbB="0" AmbA="1" DifR="0" DifG="0" DifB="0" DifA="1" SpecR="0" SpecG="0" SpecB="0" SpecA="1" SpotDirX="0" SpotDirY="0" SpotDirZ="-1" SpotExp="0" SpotCutoff="180" SpotConstant="1" SpotLinear="0" SpotQuadratic="0" />
<Light4 Enabled="False" PosX="0" PosY="0" PosZ="1" PosW="0" AmbR="0" AmbG="0" AmbB="0" AmbA="1" DifR="0" DifG="0" DifB="0" DifA="1" SpecR="0" SpecG="0" SpecB="0" SpecA="1" SpotDirX="0" SpotDirY="0" SpotDirZ="-1" SpotExp="0" SpotCutoff="180" SpotConstant="1" SpotLinear="0" SpotQuadratic="0" />
<Light5 Enabled="False" PosX="0" PosY="0" PosZ="1" PosW="0" AmbR="0" AmbG="0" AmbB="0" AmbA="1" DifR="0" DifG="0" DifB="0" DifA="1" SpecR="0" SpecG="0" SpecB="0" SpecA="1" SpotDirX="0" SpotDirY="0" SpotDirZ="-1" SpotExp="0" SpotCutoff="180" SpotConstant="1" SpotLinear="0" SpotQuadratic="0" />
<Light6 Enabled="False" PosX="0" PosY="0" PosZ="1" PosW="0" AmbR="0" AmbG="0" AmbB="0" AmbA="1" DifR="0" DifG="0" DifB="0" DifA="1" SpecR="0" SpecG="0" SpecB="0" SpecA="1" SpotDirX="0" SpotDirY="0" SpotDirZ="-1" SpotExp="0" SpotCutoff="180" SpotConstant="1" SpotLinear="0" SpotQuadratic="0" />
<Light7 Enabled="False" PosX="0" PosY="0" PosZ="1" PosW="0" AmbR="0" AmbG="0" AmbB="0" AmbA="1" DifR="0" DifG="0" DifB="0" DifA="1" SpecR="0" SpecG="0" SpecB="0" SpecA="1" SpotDirX="0" SpotDirY="0" SpotDirZ="-1" SpotExp="0" SpotCutoff="180" SpotConstant="1" SpotLinear="0" SpotQuadratic="0" />
</BuiltInStates>
<BackGround>
<BackGroundMode Mode="0" />
</BackGround>
</GLSLang>

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src/meshlab/shaders/minnaert.vert Normal file
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//
// Minnaert reflection model (per-pixel)
//
// by
// Massimiliano Corsini
// Visual Computing Lab (2006)
//
varying vec3 normal;
varying vec3 vpos;
void main (void)
{
// vertex normal
normal = gl_NormalMatrix * gl_Normal;
// vertex position (in eye-space)
vpos = vec3(gl_ModelViewMatrix * gl_Vertex);
gl_Position = ftransform();
}