Armature: Add ghosting support (old x-ray)

1 files changed, 59 insertions, 42 deletions

diff --git a/source/blender/draw/modes/pose_mode.c b/source/blender/draw/modes/pose_mode.c
index 7a4abcac179..e6f81e78264 100644
--- a/source/blender/draw/modes/pose_mode.c
+++ b/source/blender/draw/modes/pose_mode.c
@@ -47,12 +47,12 @@ extern GlobalsUboStorage ts;
  * for POSE_PassList */
 
 typedef struct POSE_PassList {
-	struct DRWPass *bone_solid;
-	struct DRWPass *bone_outline;
-	struct DRWPass *bone_wire;
-	struct DRWPass *bone_envelope;
+	struct DRWPass *bone_solid[2];
+	struct DRWPass *bone_outline[2];
+	struct DRWPass *bone_wire[2];
+	struct DRWPass *bone_envelope[2];
 	struct DRWPass *bone_axes;
-	struct DRWPass *relationship;
+	struct DRWPass *relationship[2];
 	struct DRWPass *bone_selection;
 } POSE_PassList;
 
@@ -118,28 +118,26 @@ static void POSE_cache_init(void *vedata)
 	POSE_PrivateData *ppd = stl->g_data;
 	ppd->transparent_bones = (draw_ctx->v3d->overlay.arm_flag & V3D_OVERLAY_ARM_TRANSP_BONES) != 0;
 
-	{
+	for (int i = 0; i < 2; ++i) {
 		/* Solid bones */
 		DRWState state = DRW_STATE_WRITE_COLOR | DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS_EQUAL | DRW_STATE_CULL_BACK;
-		psl->bone_solid = DRW_pass_create("Bone Solid Pass", state);
-	}
+		psl->bone_solid[i] = DRW_pass_create("Bone Solid Pass", state);
 
-	{
 		/* Bones Outline */
-		DRWState state = DRW_STATE_WRITE_COLOR | DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS_EQUAL;
-		psl->bone_outline = DRW_pass_create("Bone Outline Pass", state);
-	}
+		state = DRW_STATE_WRITE_COLOR | DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS_EQUAL;
+		psl->bone_outline[i] = DRW_pass_create("Bone Outline Pass", state);
 
-	{
 		/* Wire bones */
-		DRWState state = DRW_STATE_WRITE_COLOR | DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS_EQUAL | DRW_STATE_BLEND;
-		psl->bone_wire = DRW_pass_create("Bone Wire Pass", state);
-	}
+		state = DRW_STATE_WRITE_COLOR | DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS_EQUAL | DRW_STATE_BLEND;
+		psl->bone_wire[i] = DRW_pass_create("Bone Wire Pass", state);
 
-	{
 		/* distance outline around envelope bones */
-		DRWState state = DRW_STATE_ADDITIVE | DRW_STATE_WRITE_COLOR | DRW_STATE_DEPTH_LESS_EQUAL | DRW_STATE_CULL_FRONT;
-		psl->bone_envelope = DRW_pass_create("Bone Envelope Outline Pass", state);
+		state = DRW_STATE_ADDITIVE | DRW_STATE_WRITE_COLOR | DRW_STATE_DEPTH_LESS_EQUAL | DRW_STATE_CULL_FRONT;
+		psl->bone_envelope[i] = DRW_pass_create("Bone Envelope Outline Pass", state);
+
+		state = DRW_STATE_WRITE_COLOR | DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS_EQUAL |
+		        DRW_STATE_BLEND | DRW_STATE_WIRE;
+		psl->relationship[i] = DRW_pass_create("Bone Relationship Pass", state);
 	}
 
 	{
@@ -148,14 +146,6 @@ static void POSE_cache_init(void *vedata)
 	}
 
 	{
-		/* Non Meshes Pass (Camera, empties, lamps ...) */
-		DRWState state =
-		        DRW_STATE_WRITE_COLOR | DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS_EQUAL |
-		        DRW_STATE_BLEND | DRW_STATE_WIRE;
-		psl->relationship = DRW_pass_create("Bone Relationship Pass", state);
-	}
-
-	{
 		if (POSE_is_bone_selection_overlay_active()) {
 			copy_v4_fl4(ppd->blend_color, 0.0f, 0.0f, 0.0f, v3d->overlay.bone_select_alpha);
 			copy_v4_fl4(ppd->blend_color_invert, 0.0f, 0.0f, 0.0f, pow(v3d->overlay.bone_select_alpha, 4));
@@ -208,13 +198,15 @@ static void POSE_cache_populate(void *vedata, Object *ob)
 			return;
 		}
 		if (DRW_pose_mode_armature(ob, draw_ctx->obact)) {
+			int ghost = (ob->dtx & OB_DRAWXRAY) ? 1 : 0;
+
 			DRWArmaturePasses passes = {
-			    .bone_solid = psl->bone_solid,
-			    .bone_outline = psl->bone_outline,
-			    .bone_wire = psl->bone_wire,
-			    .bone_envelope = psl->bone_envelope,
+			    .bone_solid = psl->bone_solid[ghost],
+			    .bone_outline = psl->bone_outline[ghost],
+			    .bone_wire = psl->bone_wire[ghost],
+			    .bone_envelope = psl->bone_envelope[ghost],
 			    .bone_axes = psl->bone_axes,
-			    .relationship_lines = psl->relationship,
+			    .relationship_lines = psl->relationship[ghost],
 			};
 			DRW_shgroup_armature_pose(ob, passes, ppd->transparent_bones);
 		}
@@ -270,8 +262,10 @@ static void POSE_draw_scene(void *vedata)
 	const bool bone_selection_overlay = POSE_is_bone_selection_overlay_active();
 
 	if (DRW_state_is_select()) {
-		DRW_draw_pass(psl->bone_solid);
-		DRW_draw_pass(psl->bone_wire);
+		DRW_draw_pass(psl->bone_solid[0]);
+		DRW_draw_pass(psl->bone_wire[0]);
+		DRW_draw_pass(psl->bone_solid[1]);
+		DRW_draw_pass(psl->bone_wire[1]);
 		return;
 	}
 
@@ -283,26 +277,49 @@ static void POSE_draw_scene(void *vedata)
 		GPU_framebuffer_bind(dfbl->default_fb);
 	}
 
-	DRW_draw_pass(psl->bone_envelope);
+	DRW_draw_pass(psl->bone_envelope[0]);
 
 	if (transparent_bones) {
-		DRW_pass_state_add(psl->bone_solid, DRW_STATE_BLEND);
-		DRW_pass_state_remove(psl->bone_solid, DRW_STATE_WRITE_DEPTH);
-		DRW_draw_pass(psl->bone_solid);
+		DRW_pass_state_add(psl->bone_solid[0], DRW_STATE_BLEND);
+		DRW_pass_state_remove(psl->bone_solid[0], DRW_STATE_WRITE_DEPTH);
+		DRW_draw_pass(psl->bone_solid[0]);
 	}
 
 	MULTISAMPLE_SYNC_ENABLE(dfbl, dtxl)
 
 	if (!transparent_bones) {
-		DRW_draw_pass(psl->bone_solid);
+		DRW_draw_pass(psl->bone_solid[0]);
 	}
 
-	DRW_draw_pass(psl->bone_outline);
-	DRW_draw_pass(psl->bone_wire);
-	DRW_draw_pass(psl->relationship);
+	DRW_draw_pass(psl->bone_outline[0]);
+	DRW_draw_pass(psl->bone_wire[0]);
+	DRW_draw_pass(psl->relationship[0]);
 
 	MULTISAMPLE_SYNC_DISABLE(dfbl, dtxl)
 
+	if (!DRW_pass_is_empty(psl->bone_envelope[1]) ||
+		!DRW_pass_is_empty(psl->bone_solid[1]) ||
+		!DRW_pass_is_empty(psl->bone_outline[1]) ||
+		!DRW_pass_is_empty(psl->bone_wire[1]) ||
+		!DRW_pass_is_empty(psl->relationship[1]))
+	{
+		if (DRW_state_is_fbo()) {
+			GPU_framebuffer_bind(dfbl->default_fb);
+			GPU_framebuffer_clear_depth(dfbl->default_fb, 1.0f);
+		}
+
+		if (transparent_bones) {
+			DRW_pass_state_add(psl->bone_solid[1], DRW_STATE_BLEND);
+			DRW_pass_state_remove(psl->bone_solid[1], DRW_STATE_WRITE_DEPTH);
+		}
+
+		DRW_draw_pass(psl->bone_envelope[1]);
+		DRW_draw_pass(psl->bone_solid[1]);
+		DRW_draw_pass(psl->bone_outline[1]);
+		DRW_draw_pass(psl->bone_wire[1]);
+		DRW_draw_pass(psl->relationship[1]);
+	}
+
 	/* Draw axes with linesmooth and outside of multisample buffer. */
 	DRW_draw_pass(psl->bone_axes);
 }