feat: update atlas texture extrusion on its reload

src/assets/assetload_funcs.cpp

@@ -184,7 +184,7 @@ assetload::postfunc assetload::atlas(
         if (!append_atlas(builder, file)) continue;
     }
     std::set<std::string> names = builder.getNames();
-    Atlas* atlas = builder.build(2, false).release();
+    Atlas* atlas = builder.build(ATLAS_EXTRUSION, false).release();
     return [=](auto assets) {
         atlas->prepare();
         assets->store(std::unique_ptr<Atlas>(atlas), name);
@@ -501,7 +501,7 @@ static bool load_animation(
             }
             if (!append_atlas(builder, file)) continue;
         }
-        auto srcAtlas = builder.build(2, true);
+        auto srcAtlas = builder.build(ATLAS_EXTRUSION, true);
         if (frameList.empty()) {
             for (const auto& frameName : builder.getNames()) {
                 frameList.emplace_back(frameName, 0);

src/constants.hpp

@@ -61,6 +61,8 @@ inline constexpr int ITEM_ICON_SIZE = 48;
 
 inline constexpr int TRANSLUCENT_BLOCKS_SORT_INTERVAL = 8;
 
+inline constexpr int ATLAS_EXTRUSION = 2;
+
 inline const std::string SHADERS_FOLDER = "shaders";
 inline const std::string TEXTURES_FOLDER = "textures";
 inline const std::string FONTS_FOLDER = "fonts";

src/graphics/render/BlocksPreview.cpp

@@ -137,5 +137,5 @@ std::unique_ptr<Atlas> BlocksPreview::build(
         builder.add(def.name, draw(cache, shader, fbo, batch, def, iconSize));
     }
     fbo.unbind();
-    return builder.build(2);
+    return builder.build(ATLAS_EXTRUSION);
 }

src/logic/scripting/lua/lua_custom_types.hpp

@@ -6,6 +6,7 @@
 #include <random>
 
 #include "lua_commons.hpp"
+#include "constants.hpp"
 #include "maths/UVRegion.hpp"
 
 struct fnl_state;
@@ -108,7 +109,7 @@ namespace lua {
             return texture;
         }
 
-        void update();
+        void update(int extrusion = ATLAS_EXTRUSION);
 
         void createTexture();
 

src/logic/scripting/lua/usertypes/lua_type_canvas.cpp

@@ -19,7 +19,7 @@ LuaCanvas::LuaCanvas(
       region(std::move(region)) {
 }
 
-void LuaCanvas::update() {
+void LuaCanvas::update(int extrusion) {
     if (!hasTexture()) {
         return;
     }
@@ -39,7 +39,24 @@ void LuaCanvas::update() {
         w = std::min<uint>(w, imgWidth);
         h = std::min<uint>(h, imgHeight);
 
-        texture->reloadPartial(*data, x, y, w, h);
+        if (extrusion > 0) {
+            auto extruded = std::make_unique<ImageData>(
+                data->getFormat(),
+                w + extrusion * 2,
+                h + extrusion * 2
+            );
+            extruded->blit(*data, extrusion, extrusion);
+            extruded->extrude(0, 0, w + extrusion * 2, h + extrusion * 2);
+            texture->reloadPartial(
+                *extruded,
+                x - extrusion,
+                y - extrusion,
+                w + extrusion * 2,
+                h + extrusion * 2
+            );
+        } else {
+            texture->reloadPartial(*data, x, y, w, h);
+        }
     }
 }