Extract preview main live pass request

src/node_stroke_preview.h

@@ -15,6 +15,8 @@ class NodeStrokePreview : public NodeBorder
         glm::vec4 m_mixer_rect;
     };
 
+    using StrokeMainLivePassRequest = pp::panopainter::LegacyNodeStrokePreviewMainLivePassRequestT<StrokeFrame>;
+
     static RTT m_rtt;
     static RTT m_rtt_mixer;
     static Texture2D m_tex; // blending tmp texture
@@ -51,6 +53,12 @@ public:
     // return rect {origin, size}
     glm::vec4 stroke_draw_samples(std::array<vertex_t, 4>& P, Texture2D& blend_tex, bool copy_stroke_destination);
     std::vector<StrokeFrame> stroke_draw_compute(Stroke& stroke, float zoom) const;
+    StrokeMainLivePassRequest make_stroke_draw_immediate_main_live_pass_request(
+        const Brush& brush,
+        const pp::panopainter::LegacyNodeStrokePreviewPassOrchestrationPlan& pass_orchestration,
+        bool copy_stroke_destination,
+        float zoom,
+        const glm::vec2& size);
     void draw_stroke();
     void draw_stroke_immediate();
     Image render_to_image();