Fix a few DPI / retina draw issues:

* Color picker cursor was too small, and color cirle was not smooth enough.
* Border select gesture cross before first click did not reach to the border
  of the window.
* Buttons were not drawing emboss properly (also for non-retina actually).
  Note it doesn't draw entirely right for aligned buttons, but this was also
  the case before it got broken.

2 files changed, 8 insertions, 7 deletions

diff --git a/source/blender/editors/interface/interface_widgets.c b/source/blender/editors/interface/interface_widgets.c
index 142ea5128c0..6735c8b173c 100644
--- a/source/blender/editors/interface/interface_widgets.c
+++ b/source/blender/editors/interface/interface_widgets.c
@@ -646,8 +646,8 @@ static void widget_verts_to_quad_strip_open(uiWidgetBase *wtb, const int totvert
 	for (a = 0; a < totvert; a++) {
 		quad_strip[a * 2][0] = wtb->outer_v[a][0];
 		quad_strip[a * 2][1] = wtb->outer_v[a][1];
-		quad_strip[a * 2 + 1][0] = wtb->inner_v[a][0];
-		quad_strip[a * 2 + 1][1] = wtb->inner_v[a][1];
+		quad_strip[a * 2 + 1][0] = wtb->outer_v[a][0];
+		quad_strip[a * 2 + 1][1] = wtb->outer_v[a][1] - 1.0f;
 	}
 }
 
@@ -1900,12 +1900,12 @@ static void ui_hsv_cursor(float x, float y)
 	glTranslatef(x, y, 0.0f);
 	
 	glColor3f(1.0f, 1.0f, 1.0f);
-	glutil_draw_filled_arc(0.0f, M_PI * 2.0, 3.0f, 8);
+	glutil_draw_filled_arc(0.0f, M_PI * 2.0, 3.0f * U.pixelsize, 8);
 	
 	glEnable(GL_BLEND);
 	glEnable(GL_LINE_SMOOTH);
 	glColor3f(0.0f, 0.0f, 0.0f);
-	glutil_draw_lined_arc(0.0f, M_PI * 2.0, 3.0f, 12);
+	glutil_draw_lined_arc(0.0f, M_PI * 2.0, 3.0f * U.pixelsize, 12);
 	glDisable(GL_BLEND);
 	glDisable(GL_LINE_SMOOTH);
 	
@@ -1929,7 +1929,7 @@ void ui_hsvcircle_vals_from_pos(float *val_rad, float *val_dist, const rcti *rec
 
 static void ui_draw_but_HSVCIRCLE(uiBut *but, uiWidgetColors *wcol, const rcti *rect)
 {
-	const int tot = 32;
+	const int tot = 64;
 	const float radstep = 2.0f * (float)M_PI / (float)tot;
 
 	const float centx = BLI_rcti_cent_x_fl(rect);
diff --git a/source/blender/editors/space_buttons/buttons_header.c b/source/blender/editors/space_buttons/buttons_header.c
index ebba7d92819..701048cd229 100644
--- a/source/blender/editors/space_buttons/buttons_header.c
+++ b/source/blender/editors/space_buttons/buttons_header.c
@@ -97,14 +97,15 @@ static void do_buttons_buttons(bContext *C, void *UNUSED(arg), int event)
 	sbuts->mainbuser = sbuts->mainb;
 }
 
-#define BUT_UNIT_X (UI_UNIT_X + 2)
+#define BUT_UNIT_X (UI_UNIT_X + 2*U.pixelsize)
 
 void buttons_header_buttons(const bContext *C, ARegion *ar)
 {
 	SpaceButs *sbuts = CTX_wm_space_buts(C);
 	uiBlock *block;
 	uiBut *but;
-	int xco, yco = 2;
+	int headery = ED_area_headersize();
+	int xco, yco = 0.5f*(headery - UI_UNIT_Y);
 
 	buttons_context_compute(C, sbuts);