Bug 801: Revise Graph VBAA (Add border dropping MSAA; Test diff. AA modes incl. FXAA2) ; Test exp. LineAA ; Misc Changes

- Revise VBAA
  - Add border to FBO dropping MSAA
    - This automatically gives AA for edges on FBO boundary

  - Correcting ceil-diff, use object-diff instead of win-diff (diff := ceil(a)-a, w/ float a)

  - Reorg shader - using includes to test diff. AA modes:
    - [poles, wholeedge] * [equalweight, propweight]
    - fxaa2

- Exp. LineAA (disabled)
  - Test ROESSLER-2012-OGLES for detected rectangles only
  - Test boundary line detection

See screenshots: <http://jogamp.org/files/screenshots/graphui/20140322/>

1 files changed, 20 insertions, 0 deletions

diff --git a/src/jogl/classes/jogamp/graph/curve/opengl/shader/curverenderer01-pass1-curve-lineAA.glsl b/src/jogl/classes/jogamp/graph/curve/opengl/shader/curverenderer01-pass1-curve-lineAA.glsl
new file mode 100644
index 000000000..16dda5947
--- /dev/null
+++ b/src/jogl/classes/jogamp/graph/curve/opengl/shader/curverenderer01-pass1-curve-lineAA.glsl
@@ -0,0 +1,20 @@
+
+    // if( gcv_TexCoord.x == 10.0 && gcv_TexCoord.y == 10.0 ) {
+    if( gcv_TexCoord.z > 0.0 ) {
+         // pass-1: AA Lines
+         #if 1
+             // const float dist = sqrt( gcv_TexCoord.x*gcv_TexCoord.x + gcv_TexCoord.y*gcv_TexCoord.y ); // magnitude
+             const float dist = sqrt( gcv_TexCoord.y*gcv_TexCoord.y ); // magnitude
+             // const float a = 1.0 - smoothstep (gcv_TexCoord.y-gcv_TexCoord.z, gcv_TexCoord.y, dist);
+             const float r = gcv_TexCoord.x/3.0;
+             const float wa = gcv_TexCoord.x+r;
+             const float waHalf = wa/2.0;
+             const float a = 1.0 - smoothstep (waHalf-2.0*r, waHalf, dist);
+             color = vec3(0, 0, 1.0); // gcu_ColorStatic.rgb;
+             alpha = a;
+         #else 
+             color = vec3(0, 0, 1.0);
+             alpha = 1.0;
+         #endif 
+    } else 
+