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authorHans-Christoph Steiner <eighthave@users.sourceforge.net>2012-11-02 14:25:59 +0000
committerHans-Christoph Steiner <eighthave@users.sourceforge.net>2012-11-02 14:25:59 +0000
commit2c0b722536a4ec2f723c289b695b983741c678f8 (patch)
tree650e06f5837b7995a60bf51b47f5ec9de4ee9ebe /packages/noncvs/windows/extra/Gem/examples/10.glsl/mass.frag
parent69101e6e7eb00acaee619d4aa815d4a85925cc60 (diff)
commit windows binaries from old rsync auto-build setup, including Gem 0.93.1
svn path=/trunk/; revision=16520
Diffstat (limited to 'packages/noncvs/windows/extra/Gem/examples/10.glsl/mass.frag')
-rw-r--r--packages/noncvs/windows/extra/Gem/examples/10.glsl/mass.frag34
1 files changed, 34 insertions, 0 deletions
diff --git a/packages/noncvs/windows/extra/Gem/examples/10.glsl/mass.frag b/packages/noncvs/windows/extra/Gem/examples/10.glsl/mass.frag
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+++ b/packages/noncvs/windows/extra/Gem/examples/10.glsl/mass.frag
@@ -0,0 +1,34 @@
+// 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;
+}