Fix T60015: snap to grid - snaps only to largest increment

Caused by rBc7a96651dfa4 when trying to remove all uses of the deprecated `rv3d->gridview`.

2 files changed, 8 insertions, 6 deletions

diff --git a/source/blender/editors/space_view3d/view3d_draw.c b/source/blender/editors/space_view3d/view3d_draw.c
index b6ded48d53f..a64ba5b2197 100644
--- a/source/blender/editors/space_view3d/view3d_draw.c
+++ b/source/blender/editors/space_view3d/view3d_draw.c
@@ -780,9 +780,9 @@ float ED_view3d_grid_scale(Scene *scene, View3D *v3d, const char **grid_unit)
 	return v3d->grid * ED_scene_grid_scale(scene, grid_unit);
 }
 
-/* Simulates the grid scale that is visualized by the shaders drawing functions.
- * The actual code is seen in `object_grid_frag.glsl` when you get the `grid_res` value.
- * Currently the simulation is done only when RV3D_VIEW_IS_AXIS. */
+/* Simulates the grid scale that is actually viewed.
+ * The actual code is seen in `object_grid_frag.glsl` (see `grid_res`).
+ * Currently the simulation is only done when RV3D_VIEW_IS_AXIS. */
 float ED_view3d_grid_view_scale(
         Scene *scene, View3D *v3d, RegionView3D *rv3d, const char **grid_unit)
 {
@@ -798,7 +798,7 @@ float ED_view3d_grid_view_scale(
 			float lvl = (logf(grid_distance / grid_scale) / logf(grid_subdiv));
 
 			/* 1.3f is a visually chosen offset for the
-			 * subdivision to match the displayed grid. */
+			 * subdivision to match the visible grid. */
 			lvl -= 1.3f;
 			CLAMP_MIN(lvl, 0.0f);
 
diff --git a/source/blender/editors/space_view3d/view3d_snap.c b/source/blender/editors/space_view3d/view3d_snap.c
index dbf2271e114..9729598b022 100644
--- a/source/blender/editors/space_view3d/view3d_snap.c
+++ b/source/blender/editors/space_view3d/view3d_snap.c
@@ -79,13 +79,14 @@ static int snap_sel_to_grid_exec(bContext *C, wmOperator *UNUSED(op))
 	ViewLayer *view_layer_eval = DEG_get_evaluated_view_layer(depsgraph);
 	Object *obedit = CTX_data_edit_object(C);
 	Scene *scene = CTX_data_scene(C);
+	RegionView3D *rv3d = CTX_wm_region_data(C);
 	View3D *v3d = CTX_wm_view3d(C);
 	TransVertStore tvs = {NULL};
 	TransVert *tv;
 	float gridf, imat[3][3], bmat[3][3], vec[3];
 	int a;
 
-	gridf = ED_view3d_grid_scale(scene, v3d, NULL);
+	gridf = ED_view3d_grid_view_scale(scene, v3d, rv3d, NULL);
 
 	if (obedit) {
 		ViewLayer *view_layer = CTX_data_view_layer(C);
@@ -516,10 +517,11 @@ void VIEW3D_OT_snap_selected_to_active(wmOperatorType *ot)
 static int snap_curs_to_grid_exec(bContext *C, wmOperator *UNUSED(op))
 {
 	Scene *scene = CTX_data_scene(C);
+	RegionView3D *rv3d = CTX_wm_region_data(C);
 	View3D *v3d = CTX_wm_view3d(C);
 	float gridf, *curs;
 
-	gridf = ED_view3d_grid_scale(scene, v3d, NULL);
+	gridf = ED_view3d_grid_view_scale(scene, v3d, rv3d, NULL);
 	curs = scene->cursor.location;
 
 	curs[0] = gridf * floorf(0.5f + curs[0] / gridf);