tegra2: split fragment shaders into two (a - 1st pass, b - 2nd pass) ; disabled discard

- 1st pass (a) and 2nd pass (b), split at branch.
- all include are on one level.
- disabled discard, as it seems to be problematic

Todo:
 - verify discard / pass-split on tegra2
 - refect second pass usage (b) in implementation

1 files changed, 53 insertions, 0 deletions

diff --git a/src/jogl/classes/jogamp/graph/curve/opengl/shader/curverenderer01b-xxx.fp b/src/jogl/classes/jogamp/graph/curve/opengl/shader/curverenderer01b-xxx.fp
new file mode 100644
index 000000000..59401289c
--- /dev/null
+++ b/src/jogl/classes/jogamp/graph/curve/opengl/shader/curverenderer01b-xxx.fp
@@ -0,0 +1,53 @@
+//Copyright 2010 JogAmp Community. All rights reserved.
+
+#include uniforms.glsl
+#include varyings.glsl
+#include consts.glsl
+
+const vec3 b_color = vec3(1.0, 1.0, 1.0);
+const vec4 tex_weights = vec4(0.075, 0.06, 0.045, 0.025);
+
+void main (void)
+{
+    vec2 rtex = vec2(abs(gcv_TexCoord.x),abs(gcv_TexCoord.y));
+    vec3 c = gcu_ColorStatic.rgb;
+
+    float alpha = 0.0;
+    
+        vec2 dfx = dFdx(gcv_TexCoord);
+        vec2 dfy = dFdy(gcv_TexCoord);
+        
+        vec2 size = 1.0/gcu_TextureSize;
+
+        rtex -= 5.0;
+        vec4 t = texture2D(gcu_TextureUnit, rtex)* 0.18;
+
+        t += texture2D(gcu_TextureUnit, rtex + size*(vec2(1, 0)))*tex_weights.x;
+        t += texture2D(gcu_TextureUnit, rtex - size*(vec2(1, 0)))*tex_weights.x;
+        t += texture2D(gcu_TextureUnit, rtex + size*(vec2(0, 1)))*tex_weights.x;
+        t += texture2D(gcu_TextureUnit, rtex - size*(vec2(0, 1)))*tex_weights.x;
+        
+        t += texture2D(gcu_TextureUnit, rtex + 2.0*size*(vec2(1, 0)))*tex_weights.y;
+        t += texture2D(gcu_TextureUnit, rtex - 2.0*size*(vec2(1, 0)))*tex_weights.y;
+        t += texture2D(gcu_TextureUnit, rtex + 2.0*size*(vec2(0, 1)))*tex_weights.y; 
+        t += texture2D(gcu_TextureUnit, rtex - 2.0*size*(vec2(0, 1)))*tex_weights.y;
+        
+        t += texture2D(gcu_TextureUnit, rtex + 3.0*size*(vec2(1, 0)))*tex_weights.z;
+        t += texture2D(gcu_TextureUnit, rtex - 3.0*size*(vec2(1, 0)))*tex_weights.z;
+        t += texture2D(gcu_TextureUnit, rtex + 3.0*size*(vec2(0, 1)))*tex_weights.z;
+        t += texture2D(gcu_TextureUnit, rtex - 3.0*size*(vec2(0, 1)))*tex_weights.z;
+        
+        t += texture2D(gcu_TextureUnit, rtex + 4.0*size*(vec2(1, 0)))*tex_weights.w;
+        t += texture2D(gcu_TextureUnit, rtex - 4.0*size*(vec2(1, 0)))*tex_weights.w;
+        t += texture2D(gcu_TextureUnit, rtex + 4.0*size*(vec2(0, 1)))*tex_weights.w;
+        t += texture2D(gcu_TextureUnit, rtex - 4.0*size*(vec2(0, 1)))*tex_weights.w;
+        
+        /** discard freezes NV tegra2 compiler (TODO: dbl check)
+        if(t.w == 0.0){
+            discard;
+        } */
+        
+        c = t.xyz;
+        alpha = gcu_Alpha * t.w;
+        gl_FragColor = vec4(c, alpha);
+}