1 files changed, 48 insertions, 0 deletions
diff --git a/src/jogl/classes/jogamp/graph/curve/opengl/shader/curverenderer02a-xxx.fp b/src/jogl/classes/jogamp/graph/curve/opengl/shader/curverenderer02a-xxx.fp
new file mode 100644
index 000000000..d31bafb5a
--- /dev/null
+++ b/src/jogl/classes/jogamp/graph/curve/opengl/shader/curverenderer02a-xxx.fp
@@ -0,0 +1,48 @@
+//Copyright 2010 JogAmp Community. All rights reserved.
+ 
+//
+// 1-pass shader w/ weight
+//
+
+#include uniforms.glsl
+#include varyings.glsl
+
+void main (void)
+{
+    vec2 rtex = vec2(abs(gcv_TexCoord.x),abs(gcv_TexCoord.y));
+    vec3 c = gcu_ColorStatic.rgb;
+    
+    float alpha = 0.0;
+    
+    if((gcv_TexCoord.x == 0.0) && (gcv_TexCoord.y == 0.0)) {
+         alpha = gcu_Alpha;
+    }
+    else if ((gcv_TexCoord.x > 0.0) && (rtex.y > 0.0 || rtex.x == 1.0)) {
+        rtex.y -= 0.1;
+        
+        if(rtex.y < 0.0 && gcv_TexCoord.y < 0.0) {
+            // discard; // freezes NV tegra2 compiler
+            alpha = 0.0;
+        } else {
+            rtex.y = max(rtex.y, 0.0);
+
+            vec2 dtx = dFdx(rtex);
+            vec2 dty = dFdy(rtex);
+              
+            float w = gcu_Weight;
+            float pd = ((2.0 - (2.0*w))*rtex.x*rtex.x) + 2.0*(w-1.0)*rtex.x + 1.0;
+            float position = rtex.y - ((w*rtex.x*(1.0 - rtex.x))/pd);
+
+            float aph = 2.0 - 2.0*w;
+            
+            float gd = (aph*rtex.x*rtex.x + 2.0*rtex.x + 1.0)*(aph*rtex.x*rtex.x + 2.0*rtex.x + 1.0);
+            vec2 f = vec2((dtx.y - (w*dtx.x*(1.0 - 2.0*rtex.x))/gd), (dty.y - (w*dty.x*(1.0 - 2.0*rtex.x))/gd));
+
+            // FIXME: will we ever set gcu_Alpha != 1.0 ? If not, a==alpha!
+            float a = clamp(0.5 - ( position/length(f) ) * sign(gcv_TexCoord.y), 0.0, 1.0);
+            alpha = gcu_Alpha * a;
+        }
+    }
+
+    gl_FragColor = vec4(c, alpha);
+}