e85d191b46
- merge v0.01 --> Añadido fileselector - Añadidas fuentes de Gem y Pure Data - pix2jpg incluído en Gem. Archivos de construcción de Gem modificados. - Añadido fichero ompiling.txt con instrucciones de compilación
37 lines
861 B
GLSL
37 lines
861 B
GLSL
// Cyrille Henry 2008
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#extension GL_ARB_texture_rectangle : enable
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uniform sampler2DRect texture_mass;
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varying vec2 coord;
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vec2 test1(vec2 V)
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{
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return(max(min(V,vec2(91.,63.)),vec2(0.)));
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}
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void main (void)
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{
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vec4 color = vec4(1.,0.,0.,1.);
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if ( (coord.x < 91.) && (coord.y < 63.) )
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{
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vec4 posG = texture2DRect(texture_mass, test1(coord+vec2(-1., 0.))) ;
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vec4 posD = texture2DRect(texture_mass, test1(coord+vec2( 1., 0.))) ;
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vec4 posH = texture2DRect(texture_mass, test1(coord+vec2( 0.,-1.))) ;
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vec4 posB = texture2DRect(texture_mass, test1(coord+vec2( 0., 1.))) ;
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vec3 normal = cross((posG.xyz-posD.xyz),(posH.xyz-posB.xyz));
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color.xyz = normalize(normal);
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color.xyz = normal;
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vec3 DX = posG.xyz-posD.xyz;
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vec3 DY = posH.xyz-posB.xyz;
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color += vec4(1.);
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color *= 0.5;
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}
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color.a = 1.;
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gl_FragColor = color;
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}
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