[Bf-blender-cvs] [0909b564a93] blender-v2.83-release: Fix T76413 Gizmos: Trackball's preselection highlighting is too bright

[Clément Foucault]

Commit: 0909b564a9330a9c1c4c5df3b05bf77ae20e8927
Author: Clément Foucault
Date:   Thu May 14 15:44:49 2020 +0200
Branches: blender-v2.83-release
https://developer.blender.org/rB0909b564a9330a9c1c4c5df3b05bf77ae20e8927

Fix T76413 Gizmos: Trackball's preselection highlighting is too bright

This was caused by the sRGB viewport changes. The fix is to modify the
alpha values manually.

===================================================================

M	source/blender/editors/gizmo_library/gizmo_types/dial3d_gizmo.c
M	source/blender/editors/transform/transform_gizmo_3d.c

===================================================================

diff --git a/source/blender/editors/gizmo_library/gizmo_types/dial3d_gizmo.c b/source/blender/editors/gizmo_library/gizmo_types/dial3d_gizmo.c
index 32c72f12948..262f4b78b95 100644
--- a/source/blender/editors/gizmo_library/gizmo_types/dial3d_gizmo.c
+++ b/source/blender/editors/gizmo_library/gizmo_types/dial3d_gizmo.c
@@ -381,7 +381,7 @@ static void dial_ghostarc_draw_with_helplines(const float angle_ofs,
 {
   /* Coordinate at which the arc drawing will be started. */
   const float co_outer[4] = {0.0f, DIAL_WIDTH, 0.0f};
-  const float color_arc_inner[4] = {0.8f, 0.8f, 0.8f, 0.4f};
+  const float color_arc_inner[4] = {0.8f, 0.8f, 0.8f, 0.2f};
   dial_ghostarc_draw(angle_ofs, angle_delta, arc_inner_factor, color_arc_inner);
 
   float line_width = (draw_options & ED_GIZMO_DIAL_DRAW_FLAG_ANGLE_VALUE) ? 3.0f : 1.0f;
diff --git a/source/blender/editors/transform/transform_gizmo_3d.c b/source/blender/editors/transform/transform_gizmo_3d.c
index aa298b04d1a..4e0bebe2f4c 100644
--- a/source/blender/editors/transform/transform_gizmo_3d.c
+++ b/source/blender/editors/transform/transform_gizmo_3d.c
@@ -347,7 +347,7 @@ static void gizmo_get_axis_color(const int axis_idx,
   if (axis_idx >= MAN_AXIS_RANGE_ROT_START && axis_idx < MAN_AXIS_RANGE_ROT_END) {
     /* Never fade rotation rings. */
     /* trackball rotation axis is a special case, we only draw a slight overlay */
-    alpha_fac = (axis_idx == MAN_AXIS_ROT_T) ? 0.1f : 1.0f;
+    alpha_fac = (axis_idx == MAN_AXIS_ROT_T) ? 0.05f : 1.0f;
   }
   else {
     bool is_plane = false;