[Bf-blender-cvs] [03599c6dca7] temp-lineart-contained: Lineart: Fixed overscan to 0.1

[YimingWu]

Commit: 03599c6dca7f1cd2a52640dfd0c86d8ab88732bf
Author: YimingWu
Date:   Sat Jun 5 23:31:14 2021 +0800
Branches: temp-lineart-contained
https://developer.blender.org/rB03599c6dca7f1cd2a52640dfd0c86d8ab88732bf

Lineart: Fixed overscan to 0.1

===================================================================

M	source/blender/gpencil_modifiers/intern/lineart/lineart_cpu.c

===================================================================

diff --git a/source/blender/gpencil_modifiers/intern/lineart/lineart_cpu.c b/source/blender/gpencil_modifiers/intern/lineart/lineart_cpu.c
index 0b4598c272b..e0005029fbc 100644
--- a/source/blender/gpencil_modifiers/intern/lineart/lineart_cpu.c
+++ b/source/blender/gpencil_modifiers/intern/lineart/lineart_cpu.c
@@ -1398,6 +1398,28 @@ static void lineart_main_perspective_division(LineartRenderBuffer *rb)
   }
 }
 
+static void lineart_main_discard_out_of_frame_edges(LineartRenderBuffer *rb)
+{
+  LineartEdge *e;
+  int i;
+
+  float overscan_x = 0.1;
+  float overscan_y = 0.1;
+
+#define LRT_VERT_OUT_OF_BOUND(v) \
+  (v && (v->fbcoord[0] < (-1 - overscan_x) || v->fbcoord[0] > (1 + overscan_x) || \
+         v->fbcoord[1] < (-1 - overscan_y) || v->fbcoord[1] > (1 + overscan_y)))
+
+  LISTBASE_FOREACH (LineartElementLinkNode *, eln, &rb->line_buffer_pointers) {
+    e = (LineartEdge *)eln->pointer;
+    for (i = 0; i < eln->element_count; i++) {
+      if ((LRT_VERT_OUT_OF_BOUND(e[i].v1) && LRT_VERT_OUT_OF_BOUND(e[i].v2))) {
+        e[i].flags = LRT_EDGE_FLAG_CHAIN_PICKED;
+      }
+    }
+  }
+}
+
 /**
  * Transform a single vert to it's viewing position.
  */
@@ -4088,6 +4110,8 @@ bool MOD_lineart_compute_feature_lines(Depsgraph *depsgraph,
   /* Do the perspective division after clipping is done. */
   lineart_main_perspective_division(rb);
 
+  lineart_main_discard_out_of_frame_edges(rb);
+
   /* Triangle intersections are done here during sequential adding of them. Only after this,
    * triangles and lines are all linked with acceleration structure, and the 2D occlusion stage
    * can do its job. */