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authorTravis CI <zmoelnig@travis-ci.umlaeute.mur.at>2015-03-19 20:12:11 +0000
committerTravis CI <zmoelnig@travis-ci.umlaeute.mur.at>2015-03-19 20:12:11 +0000
commit17dc0febb17888015be1e4ad1ed4b096a4909865 (patch)
tree0c32573795cf15c79d5e8f792772bf952dab415b /Gem/examples/10.glsl/mass.frag
parent454d0818e5ad0820771abebefa9758c66068b8d1 (diff)
Gem 206d71791bc3642e8c5391a4c59c30ba7411fab8 osx/i386
built 'master:206d71791bc3642e8c5391a4c59c30ba7411fab8' for osx/i386
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diff --git a/Gem/examples/10.glsl/mass.frag b/Gem/examples/10.glsl/mass.frag
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+// Cyrille Henry 2008
+#extension GL_ARB_texture_rectangle : enable
+
+uniform sampler2DRect texture_mass_old,texture_link;
+varying vec2 coord;
+uniform float init;
+
+void main (void)
+{
+ vec4 color = vec4(0.,0.,1.,1.);
+ if ( (coord.x < 92.) && (coord.y < 64.) )
+ {
+ vec4 pos = texture2DRect(texture_mass_old, coord)-vec4(0.5);
+ vec4 force = texture2DRect(texture_link, coord)-vec4(0.5);
+
+ force = min(max(force,vec4(-0.5)),vec4(0.5));
+ // on vire les +inf et -inf qui peuvent poser pb en cas d'instabilités
+ pos += force;
+ //increment de la position
+
+ float reset = step(coord.x,1.);
+// reset *= step(mod(coord.y,10.),4.);
+ // les point en x<1 sont tjrs reseté : ils sont dc imobiles
+
+ color = mix(pos,vec4(coord.x/1000.,(coord.y-32.)/1000.,0.,0.),reset+(1.-reset)*init);
+ // couleur de sortie mixé avec couleur d'initialisation
+
+ color += vec4(0.5);
+ color.a = 1.;
+ // preparation de la sortie (ajout de l'offset + virer l'alpha)
+ }
+
+ gl_FragColor = color;
+}