Geometry Nodes: make field links thinner than other links

This makes it easier to spot which links contain fields and which
contain data. Actually, the patch makes all other links a bit thicker.
However, with soon-to-be-implemented theme changes, the
perceived thickness will be the same as before.

This is part of T91563.

Differential Revision: https://developer.blender.org/D12646

1 files changed, 3 insertions, 1 deletions

diff --git a/source/blender/gpu/shaders/gpu_shader_2D_nodelink_vert.glsl b/source/blender/gpu/shaders/gpu_shader_2D_nodelink_vert.glsl
index aae7f641af8..2194d23a4ea 100644
--- a/source/blender/gpu/shaders/gpu_shader_2D_nodelink_vert.glsl
+++ b/source/blender/gpu/shaders/gpu_shader_2D_nodelink_vert.glsl
@@ -19,6 +19,7 @@ in vec2 P3;
 in ivec4 colid_doarrow;
 in ivec2 domuted;
 in float dim_factor;
+in float thickness;
 
 uniform vec4 colors[6];
 
@@ -41,6 +42,7 @@ uniform vec4 colors[3];
 uniform bool doArrow;
 uniform bool doMuted;
 uniform float dim_factor;
+uniform float thickness;
 
 #  define colShadow colors[0]
 #  define colStart colors[1]
@@ -103,7 +105,7 @@ void main(void)
   finalColor[3] *= dim_factor;
 
   /* Expand into a line */
-  gl_Position.xy += exp_axis * expandSize * expand_dist;
+  gl_Position.xy += exp_axis * expandSize * expand_dist * thickness;
 
   /* If the link is not muted or is not a reroute arrow the points are squashed to the center of
    * the line. Magic numbers are defined in drawnode.c */