From 7b7bad642d8d21ce8190917ed6788cfe55c9cae1 Mon Sep 17 00:00:00 2001
From: luboslenco <lubos.lenco@gmail.com>
Date: Sat, 27 Sep 2025 19:38:29 +0200
Subject: [PATCH] Node preview progress

---
 paint/sources/context.ts  |  4 ++--
 paint/sources/ui_nodes.ts | 12 +++++++-----
 2 files changed, 9 insertions(+), 7 deletions(-)

diff --git a/paint/sources/context.ts b/paint/sources/context.ts
index 62e46b3b..d08132fa 100644
--- a/paint/sources/context.ts
+++ b/paint/sources/context.ts
@@ -97,7 +97,7 @@ type context_t = {
 	layer_preview_dirty?: bool;
 	layers_preview_dirty?: bool;
 	node_preview_dirty?: bool;
-	node_preview?: gpu_texture_t;
+	node_preview_map?: map_t<ui_node_t, gpu_texture_t>;
 	node_preview_name?: string;
 	node_previews?: map_t<string, gpu_texture_t>;
 	node_previews_used?: string[];
@@ -327,6 +327,7 @@ function context_create(): context_t {
 	c.layers_preview_dirty = false;
 	c.node_preview_dirty = false;
 	c.node_preview_name = "";
+	c.node_preview_map = map_create();
 	c.selected_node_preview = true;
 	c.colorid_picked = false;
 	c.material_preview = false; // Drawing material previews
@@ -791,4 +792,3 @@ function context_ext_select_paint_object(o: mesh_object_t) {
 	util_uv_trianglemap_cached = false;
 	util_uv_dilatemap_cached = false;
 }
-
diff --git a/paint/sources/ui_nodes.ts b/paint/sources/ui_nodes.ts
index 46b5bf4d..55176076 100644
--- a/paint/sources/ui_nodes.ts
+++ b/paint/sources/ui_nodes.ts
@@ -977,7 +977,7 @@ function ui_nodes_render() {
 				let th: f32 = tw * (img.height / img.width);
 				let tx: f32 = ui_nodes_ww - tw - 8 * UI_SCALE();
 				let ty: f32 = ui_nodes_wh - th - 8 * UI_SCALE();
-				if (img == context_raw.node_preview) {
+				if (img == map_get(context_raw.node_preview_map, sel)) {
 					ui_draw_shadow(tx, ty, tw, th);
 				}
 				let single_channel: bool = sel.type == "LAYER_MASK";
@@ -1129,7 +1129,7 @@ function ui_nodes_get_node_preview_image(n: ui_node_t): gpu_texture_t {
 		}
 	}
 	else if (ui_nodes_canvas_type == canvas_type_t.MATERIAL) {
-		img = context_raw.node_preview;
+		img = map_get(context_raw.node_preview_map, n);
 	}
 	return img;
 }
@@ -1471,13 +1471,15 @@ function ui_nodes_make_node_preview() {
 		return;
 	}
 
-	if (context_raw.node_preview == null) {
-		context_raw.node_preview = gpu_create_render_target(util_render_material_preview_size, util_render_material_preview_size);
+	let img: gpu_texture_t = map_get(context_raw.node_preview_map, node);
+	if (img == null) {
+		img = gpu_create_render_target(util_render_material_preview_size, util_render_material_preview_size);
+		map_set(context_raw.node_preview_map, node, img);
 	}
 
 	context_raw.node_preview_dirty = false;
 	ui_nodes_hwnd.redraws = 2;
-	util_render_make_node_preview(ui_nodes_get_canvas(), node, context_raw.node_preview);
+	util_render_make_node_preview(ui_nodes_get_canvas(), node, img);
 }
 
 function ui_nodes_has_group(c: ui_node_canvas_t): bool {