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diff --git a/source/blender/editors/manipulator_library/dial3d_manipulator.c b/source/blender/editors/manipulator_library/dial3d_manipulator.c
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+++ b/source/blender/editors/manipulator_library/dial3d_manipulator.c
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+/*
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * The Original Code is Copyright (C) 2014 Blender Foundation.
+ * All rights reserved.
+ *
+ * Contributor(s): Blender Foundation
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+/** \file dial3d_manipulator.c
+ *  \ingroup wm
+ *
+ * \name Dial Manipulator
+ *
+ * 3D Manipulator
+ *
+ * \brief Circle shaped manipulator for circular interaction.
+ * Currently no own handling, use with operator only.
+ */
+
+#include "BIF_gl.h"
+#include "BIF_glutil.h"
+
+#include "BKE_context.h"
+
+#include "BLI_math.h"
+
+#include "DNA_manipulator_types.h"
+
+#include "ED_screen.h"
+#include "ED_view3d.h"
+#include "ED_manipulator_library.h"
+
+#include "GPU_select.h"
+
+#include "GPU_matrix.h"
+
+#include "GPU_immediate.h"
+#include "GPU_immediate_util.h"
+
+#include "MEM_guardedalloc.h"
+
+#include "WM_api.h"
+#include "WM_types.h"
+
+/* own includes */
+#include "manipulator_geometry.h"
+#include "manipulator_library_intern.h"
+
+/* to use custom dials exported to geom_dial_manipulator.c */
+// #define USE_MANIPULATOR_CUSTOM_DIAL
+
+typedef struct DialManipulator {
+	wmManipulator manipulator;
+	int style;
+	float direction[3];
+} DialManipulator;
+
+typedef struct DialInteraction {
+	float init_mval[2];
+
+	/* cache the last angle to detect rotations bigger than -/+ PI */
+	float last_angle;
+	/* number of full rotations */
+	int rotations;
+} DialInteraction;
+
+#define DIAL_WIDTH       1.0f
+#define DIAL_RESOLUTION 32
+
+/* -------------------------------------------------------------------- */
+
+static void dial_geom_draw(
+        const DialManipulator *dial, const float col[4], const bool select,
+        float axis_modal_mat[4][4], float clip_plane[4])
+{
+#ifdef USE_MANIPULATOR_CUSTOM_DIAL
+	UNUSED_VARS(dial, col, axis_modal_mat, clip_plane);
+	wm_manipulator_geometryinfo_draw(&wm_manipulator_geom_data_dial, select);
+#else
+	const bool filled = (dial->style == ED_MANIPULATOR_DIAL_STYLE_RING_FILLED);
+
+	glLineWidth(dial->manipulator.line_width);
+
+	VertexFormat *format = immVertexFormat();
+	unsigned int pos = VertexFormat_add_attrib(format, "pos", COMP_F32, 2, KEEP_FLOAT);
+
+	if (clip_plane) {
+		immBindBuiltinProgram(GPU_SHADER_3D_CLIPPED_UNIFORM_COLOR);
+		float clip_plane_f[4] = {clip_plane[0], clip_plane[1], clip_plane[2], clip_plane[3]};
+		immUniform4fv("ClipPlane", clip_plane_f);
+		immUniformMatrix4fv("ModelMatrix", axis_modal_mat);
+	}
+	else {
+		immBindBuiltinProgram(GPU_SHADER_3D_UNIFORM_COLOR);
+	}
+
+	immUniformColor4fv(col);
+
+	if (filled) {
+		imm_draw_circle_fill(pos, 0, 0, 1.0, DIAL_RESOLUTION);
+	}
+	else {
+		imm_draw_circle_wire(pos, 0, 0, 1.0, DIAL_RESOLUTION);
+	}
+
+	immUnbindProgram();
+
+	UNUSED_VARS(select);
+#endif
+}
+
+/**
+ * Draws a line from (0, 0, 0) to \a co_outer, at \a angle.
+ */
+static void dial_ghostarc_draw_helpline(const float angle, const float co_outer[3], const float col[4])
+{
+	glLineWidth(1.0f);
+
+	gpuPushMatrix();
+	gpuRotate3f(RAD2DEGF(angle), 0.0f, 0.0f, -1.0f);
+
+	unsigned int pos = VertexFormat_add_attrib(immVertexFormat(), "pos", COMP_F32, 3, KEEP_FLOAT);
+
+	immBindBuiltinProgram(GPU_SHADER_3D_UNIFORM_COLOR);
+
+	immUniformColor4fv(col);
+
+	immBegin(PRIM_LINE_STRIP, 2);
+	immVertex3f(pos, 0.0f, 0.0f, 0.0f);
+	immVertex3fv(pos, co_outer);
+	immEnd();
+
+	immUnbindProgram();
+
+	gpuPopMatrix();
+}
+
+static void dial_ghostarc_draw(
+        const DialManipulator *dial, const float angle_ofs, const float angle_delta, const float color[4])
+{
+	const float width_inner = DIAL_WIDTH - dial->manipulator.line_width * 0.5f / U.manipulator_scale;
+
+	VertexFormat *format = immVertexFormat();
+	unsigned int pos = VertexFormat_add_attrib(format, "pos", COMP_F32, 2, KEEP_FLOAT);
+	immBindBuiltinProgram(GPU_SHADER_3D_UNIFORM_COLOR);
+	immUniformColor4fv(color);
+	imm_draw_disk_partial_fill(
+	        pos, 0, 0, 0.0, width_inner, DIAL_RESOLUTION, RAD2DEGF(angle_ofs), RAD2DEGF(angle_delta));
+	immUnbindProgram();
+}
+
+static void dial_ghostarc_get_angles(
+        const DialManipulator *dial, const wmEvent *event, const ARegion *ar,
+        float mat[4][4], const float co_outer[3],
+        float *r_start, float *r_delta)
+{
+	DialInteraction *inter = dial->manipulator.interaction_data;
+	const RegionView3D *rv3d = ar->regiondata;
+	const float mval[2] = {event->x - ar->winrct.xmin, event->y - ar->winrct.ymin};
+	bool inv = false;
+
+	/* we might need to invert the direction of the angles */
+	float view_vec[3], axis_vec[3];
+	ED_view3d_global_to_vector(rv3d, rv3d->twmat[3], view_vec);
+	normalize_v3_v3(axis_vec, dial->direction);
+	if (dot_v3v3(view_vec, axis_vec) < 0.0f) {
+		inv = true;
+	}
+
+	float co[3], origin2d[2], co2d[2];
+	mul_v3_project_m4_v3(co, mat, co_outer);
+	/* project 3d coordinats to 2d viewplane */
+	ED_view3d_project_float_global(ar, dial->manipulator.origin, origin2d, V3D_PROJ_TEST_NOP);
+	ED_view3d_project_float_global(ar, co, co2d, V3D_PROJ_TEST_NOP);
+
+	/* convert to manipulator relative space */
+	float rel_initmval[2], rel_mval[2], rel_co[2];
+	sub_v2_v2v2(rel_initmval, inter->init_mval, origin2d);
+	sub_v2_v2v2(rel_mval, mval, origin2d);
+	sub_v2_v2v2(rel_co, co2d, origin2d);
+
+	/* return angles */
+	const float start = angle_signed_v2v2(rel_co, rel_initmval) * (inv ? -1 : 1);
+	const float delta = angle_signed_v2v2(rel_initmval, rel_mval) * (inv ? -1 : 1);
+
+	/* Change of sign, we passed the 180 degree threshold. This means we need to add a turn
+	 * to distinguish between transition from 0 to -1 and -PI to +PI, use comparison with PI/2.
+	 * Logic taken from BLI_dial_angle */
+	if ((delta * inter->last_angle < 0.0f) &&
+	    (fabsf(inter->last_angle) > (float)M_PI_2))
+	{
+		if (inter->last_angle < 0.0f)
+			inter->rotations--;
+		else
+			inter->rotations++;
+	}
+	inter->last_angle = delta;
+
+	*r_start = start;
+	*r_delta = fmod(delta + 2.0f * (float)M_PI * inter->rotations, 2 * (float)M_PI);
+}
+
+static void dial_draw_intern(
+        const bContext *C, DialManipulator *dial,
+        const bool select, const bool highlight, float clip_plane[4])
+{
+	float rot[3][3];
+	float mat[4][4];
+	const float up[3] = {0.0f, 0.0f, 1.0f};
+	float col[4];
+
+	BLI_assert(CTX_wm_area(C)->spacetype == SPACE_VIEW3D);
+
+	manipulator_color_get(&dial->manipulator, highlight, col);
+
+	rotation_between_vecs_to_mat3(rot, up, dial->direction);
+	copy_m4_m3(mat, rot);
+	copy_v3_v3(mat[3], dial->manipulator.origin);
+	mul_mat3_m4_fl(mat, dial->manipulator.scale);
+
+	gpuPushMatrix();
+	gpuMultMatrix(mat);
+	gpuTranslate3fv(dial->manipulator.offset);
+
+	/* draw rotation indicator arc first */
+	if ((dial->manipulator.flag & WM_MANIPULATOR_DRAW_VALUE) && (dial->manipulator.state & WM_MANIPULATOR_STATE_ACTIVE)) {
+		wmWindow *win = CTX_wm_window(C);
+		const float co_outer[4] = {0.0f, DIAL_WIDTH, 0.0f}; /* coordinate at which the arc drawing will be started */
+		float angle_ofs, angle_delta;
+
+		dial_ghostarc_get_angles(dial, win->eventstate, CTX_wm_region(C), mat, co_outer, &angle_ofs, &angle_delta);
+		/* draw! */
+		dial_ghostarc_draw(dial, angle_ofs, angle_delta, (const float [4]){0.8f, 0.8f, 0.8f, 0.4f});
+
+		dial_ghostarc_draw_helpline(angle_ofs, co_outer, col); /* starting position */
+		dial_ghostarc_draw_helpline(angle_ofs + angle_delta, co_outer, col); /* starting position + current value */
+	}
+
+	/* draw actual dial manipulator */
+	dial_geom_draw(dial, col, select, mat, clip_plane);
+
+	gpuPopMatrix();
+}
+
+static void manipulator_dial_render_3d_intersect(const bContext *C, wmManipulator *manipulator, int selectionbase)
+{
+	DialManipulator *dial = (DialManipulator *)manipulator;
+	float clip_plane_buf[4];
+	float *clip_plane = (dial->style == ED_MANIPULATOR_DIAL_STYLE_RING_CLIPPED) ? clip_plane_buf : NULL;
+
+	/* enable clipping if needed */
+	if (clip_plane) {
+		ARegion *ar = CTX_wm_region(C);
+		RegionView3D *rv3d = ar->regiondata;
+
+		copy_v3_v3(clip_plane, rv3d->viewinv[2]);
+		clip_plane[3] = -dot_v3v3(rv3d->viewinv[2], manipulator->origin);
+		glEnable(GL_CLIP_DISTANCE0);
+	}
+
+	GPU_select_load_id(selectionbase);
+	dial_draw_intern(C, dial, true, false, clip_plane);
+
+	if (clip_plane) {
+		glDisable(GL_CLIP_DISTANCE0);
+	}
+}
+
+static void manipulator_dial_draw(const bContext *C, wmManipulator *manipulator)
+{
+	DialManipulator *dial = (DialManipulator *)manipulator;
+	const bool active = manipulator->state & WM_MANIPULATOR_STATE_ACTIVE;
+	const bool highlight = (manipulator->state & WM_MANIPULATOR_STATE_HIGHLIGHT) != 0;
+	float clip_plane_buf[4];
+	float *clip_plane = (!active && dial->style == ED_MANIPULATOR_DIAL_STYLE_RING_CLIPPED) ? clip_plane_buf : NULL;
+
+	/* enable clipping if needed */
+	if (clip_plane) {
+		ARegion *ar = CTX_wm_region(C);
+		RegionView3D *rv3d = ar->regiondata;
+
+		copy_v3_v3(clip_plane, rv3d->viewinv[2]);
+		clip_plane[3] = -dot_v3v3(rv3d->viewinv[2], manipulator->origin);
+		clip_plane[3] -= 0.02 * dial->manipulator.scale;
+
+		glEnable(GL_CLIP_DISTANCE0);
+	}
+
+	glEnable(GL_BLEND);
+	dial_draw_intern(C, dial, false, highlight, clip_plane);
+	glDisable(GL_BLEND);
+
+	if (clip_plane) {
+		glDisable(GL_CLIP_DISTANCE0);
+	}
+}
+
+static void manipulator_dial_invoke(
+        bContext *UNUSED(C), wmManipulator *manipulator, const wmEvent *event)
+{
+	DialInteraction *inter = MEM_callocN(sizeof(DialInteraction), __func__);
+
+	inter->init_mval[0] = event->mval[0];
+	inter->init_mval[1] = event->mval[1];
+
+	manipulator->interaction_data = inter;
+}
+
+
+/* -------------------------------------------------------------------- */
+/** \name Dial Manipulator API
+ *
+ * \{ */
+
+wmManipulator *ED_manipulator_dial3d_new(wmManipulatorGroup *mgroup, const char *name, const int style)
+{
+	const wmManipulatorType *mpt = WM_manipulatortype_find("MANIPULATOR_WT_dial", false);
+	DialManipulator *dial = (DialManipulator *)WM_manipulator_new(mpt, mgroup, name);
+
+	const float dir_default[3] = {0.0f, 0.0f, 1.0f};
+
+	dial->style = style;
+
+	/* defaults */
+	copy_v3_v3(dial->direction, dir_default);
+
+	return (wmManipulator *)dial;
+}
+
+/**
+ * Define up-direction of the dial manipulator
+ */
+void ED_manipulator_dial3d_set_up_vector(wmManipulator *manipulator, const float direction[3])
+{
+	DialManipulator *dial = (DialManipulator *)manipulator;
+
+	copy_v3_v3(dial->direction, direction);
+	normalize_v3(dial->direction);
+}
+
+static void MANIPULATOR_WT_dial_3d(wmManipulatorType *wt)
+{
+	/* identifiers */
+	wt->idname = "MANIPULATOR_WT_dial";
+
+	/* api callbacks */
+	wt->draw = manipulator_dial_draw;
+	wt->draw_select = manipulator_dial_render_3d_intersect;
+	wt->invoke = manipulator_dial_invoke;
+
+	wt->size = sizeof(DialManipulator);
+}
+
+void ED_manipulatortypes_dial_3d(void)
+{
+	WM_manipulatortype_append(MANIPULATOR_WT_dial_3d);
+}
+
+/** \} */ // Dial Manipulator API