X-Ray: Added a slider for the alpha

- will not render when set to 0.0 for speed reasons. so when user sets
transparency to hide everything the bigger passes will be skipped.

1 files changed, 11 insertions, 6 deletions

diff --git a/source/blender/draw/engines/workbench/workbench_forward.c b/source/blender/draw/engines/workbench/workbench_forward.c
index 279e6a745ee..50cf5676239 100644
--- a/source/blender/draw/engines/workbench/workbench_forward.c
+++ b/source/blender/draw/engines/workbench/workbench_forward.c
@@ -178,6 +178,7 @@ static WORKBENCH_MaterialData *get_or_create_material_data(
 		        drawtype == OB_SOLID ? wpd->transparent_accum_sh : wpd->transparent_accum_texture_sh,
 		        psl->transparent_accum_pass);
 		DRW_shgroup_uniform_block(grp, "world_block", wpd->world_ubo);
+		DRW_shgroup_uniform_float(grp, "alpha", &wpd->shading.xray_alpha, 1);
 		workbench_material_set_normal_world_matrix(grp, wpd, e_data.normal_world_matrix);
 		material->object_id = engine_object_data->object_id;
 		copy_v4_v4(material->material_data.diffuse_color, material_template.material_data.diffuse_color);
@@ -343,6 +344,7 @@ void workbench_forward_engine_init(WORKBENCH_Data *vedata)
 		int state = DRW_STATE_WRITE_COLOR | DRW_STATE_TRANSPARENT_REVEALAGE;
 		psl->transparent_revealage_pass = DRW_pass_create("Transparent Revealage", state);
 		grp = DRW_shgroup_create(e_data.transparent_revealage_sh, psl->transparent_revealage_pass);
+		DRW_shgroup_uniform_float(grp, "alpha", &wpd->shading.xray_alpha, 1);
 		wpd->transparent_revealage_shgrp = grp;
 	}
 #endif
@@ -546,14 +548,17 @@ void workbench_forward_draw_scene(WORKBENCH_Data *vedata)
 	/* Write Depth + Object ID */
 	GPU_framebuffer_bind(fbl->object_outline_fb);
 	DRW_draw_pass(psl->object_outline_pass);
-
-	/* Shade */
-	GPU_framebuffer_bind(fbl->transparent_accum_fb);
-	DRW_draw_pass(psl->transparent_accum_pass);
+	
+	if (wpd->shading.xray_alpha > 0.0) {
+		/* Shade */
+		GPU_framebuffer_bind(fbl->transparent_accum_fb);
+		DRW_draw_pass(psl->transparent_accum_pass);
 #ifdef WORKBENCH_REVEALAGE_ENABLED
-	GPU_framebuffer_bind(fbl->transparent_revealage_fb);
-	DRW_draw_pass(psl->transparent_revealage_pass);
+		GPU_framebuffer_bind(fbl->transparent_revealage_fb);
+		DRW_draw_pass(psl->transparent_revealage_pass);
 #endif
+	}
+
 	/* Composite */
 	GPU_framebuffer_bind(fbl->composite_fb);
 	DRW_draw_pass(psl->composite_pass);