Armature: Add new Transparent Bone overlay option.

This is half the replacement of the old wireframe mode. It's not doing any
XRay drawing at the moment.

2 files changed, 3 insertions, 2 deletions

diff --git a/source/blender/draw/modes/shaders/armature_shape_solid_frag.glsl b/source/blender/draw/modes/shaders/armature_shape_solid_frag.glsl
index aa455a85cf0..248281f4e79 100644
--- a/source/blender/draw/modes/shaders/armature_shape_solid_frag.glsl
+++ b/source/blender/draw/modes/shaders/armature_shape_solid_frag.glsl
@@ -5,5 +5,5 @@ out vec4 fragColor;
 
 void main()
 {
-	fragColor = finalColor;
+	fragColor = vec4(finalColor.rgb, 0.6); /* Hardcoded transparency factor. */
 }
diff --git a/source/blender/draw/modes/shaders/armature_sphere_solid_frag.glsl b/source/blender/draw/modes/shaders/armature_sphere_solid_frag.glsl
index a431a048282..3c80f629d79 100644
--- a/source/blender/draw/modes/shaders/armature_sphere_solid_frag.glsl
+++ b/source/blender/draw/modes/shaders/armature_sphere_solid_frag.glsl
@@ -73,7 +73,8 @@ void main()
 	float dither = (0.5 + dot(vec2(ivec2(gl_FragCoord.xy) & ivec2(1)), vec2(1.0, 2.0))) * 0.25;
 	dither *= (1.0 / 255.0); /* Assume 8bit per color buffer. */
 
-	fragColor = vec4(fragColor.rgb + dither, 1.0);
+	/* Hardcoded transparency factor. Less than shape to be less distractive. */
+	fragColor = vec4(fragColor.rgb + dither, 0.4);
 
 	t /= ray_len;
 	gl_FragDepth = get_depth_from_view_z(ray_dir_view.z * t + ray_ori_view.z);