Cleanup: DRW: Improve state_stencil documentation

This adds the possibility to use the C++ API for other GPUTexture.

@@ -2428,3 +2428,3 @@
                 ({"property": "enable_workbench_next"}, ("blender/blender/issues/101619", "#101619")),
-                ({"property": "use_grease_pencil_version3"}, ("blender/blender/projects/40", "Grease Pencil 3.0")),
                 ({"property": "enable_overlay_next"}, ("blender/blender/issues/102179", "#102179")),
+                ({"property": "use_grease_pencil_version3"}, ("blender/blender/projects/40", "Grease Pencil 3.0")),

@@ -0,0 +60,4 @@
+    float3 size;
+    BKE_boundbox_calc_size_aabb(bb, size);
+
+    if (boundtype == OB_BOUND_BOX) {

@@ -0,0 +362,4 @@
+    Object *camera_object = DEG_get_evaluated_object(state.depsgraph, v3d->camera);
+    const bool is_select = state.selection_type != SelectionType::DISABLED;
+    const bool is_active = (ob == camera_object);
+    const bool look_through = (is_active && (rv3d->persp == RV3D_CAMOB));

@@ -0,0 +12,4 @@
+
+namespace blender::draw::overlay {
+
+class CollisionPasses : public BoundPassesBase {

@@ -88,0 +108,4 @@
+    return;
+  }
+
+  const select::ID select_id = resources.select_id(ob_ref);

@@ -269,0 +412,4 @@
+  }
+};
+
+class OverlayPasses {

@@ -269,0 +420,4 @@
+
+  PassSimple ps_;
+
+  enum ExtraType { DEFAULT, DEFAULT_ALWAYS, BLEND_CULL_FRONT, BLEND_CULL_BACK, MAX };

@@ -75,11 +78,44 @@ ShaderModule::ShaderModule(const SelectionType selection_type, const bool clippi
 
   extra_shape = selectable_shader("overlay_extra", [](gpu::shader::ShaderCreateInfo &info) {
     info.storage_buf(0, Qualifier::READ, "ExtraInstanceData", "data_buf[]");