Sequencer: frame offset feature usability

- Expose the operator in the panel,
  (wasn't available in the UI at all).
- Offset frame was hard coded to a color matching the background.
  Use the current frame color with dashes instead.
- Overlay toggle had wrong name.

1 files changed, 4 insertions, 2 deletions

diff --git a/source/blender/editors/space_sequencer/sequencer_draw.c b/source/blender/editors/space_sequencer/sequencer_draw.c
index ea815bd5456..07350b5269e 100644
--- a/source/blender/editors/space_sequencer/sequencer_draw.c
+++ b/source/blender/editors/space_sequencer/sequencer_draw.c
@@ -2076,9 +2076,11 @@ void draw_timeline_seq(const bContext *C, ARegion *ar)
                         scene->r.cfra + scene->ed->over_ofs;
 
     uint pos = GPU_vertformat_attr_add(immVertexFormat(), "pos", GPU_COMP_F32, 2, GPU_FETCH_FLOAT);
-    immBindBuiltinProgram(GPU_SHADER_2D_UNIFORM_COLOR);
+    immBindBuiltinProgram(GPU_SHADER_3D_LINE_DASHED_UNIFORM_COLOR);
 
-    immUniformColor3f(0.2f, 0.2f, 0.2f);
+    immUniform1f("dash_width", 20.0f * U.pixelsize);
+    immUniform1f("dash_factor", 0.5f);
+    immUniformThemeColor(TH_CFRAME);
 
     immBegin(GPU_PRIM_LINES, 2);
     immVertex2f(pos, cfra_over, v2d->cur.ymin);