update 'overlay-texture' block property behaviour

res/content/base/blocks/water.json

@@ -1,6 +1,6 @@
 {
     "texture": "water",
-    "overlay-texture": "water",
+    "overlay-texture": "blocks:water",
     "draw-group": 3,
     "light-passing": true,
     "sky-light-passing": false,

src/assets/assets_util.cpp

@@ -4,7 +4,7 @@
 #include "graphics/core/Atlas.hpp"
 #include "graphics/core/Texture.hpp"
 
-util::TextureRegion util::getTextureRegion(
+util::TextureRegion util::get_texture_region(
     const Assets& assets, const std::string& name, const std::string& fallback
 ) {
     size_t sep = name.find(':');
@@ -16,7 +16,7 @@ util::TextureRegion util::getTextureRegion(
             if (auto reg = atlas->getIf(name.substr(sep+1))) {
                 return {atlas->getTexture(), *reg};
             } else if (!fallback.empty()){
-                return util::getTextureRegion(assets, fallback, "");
+                return util::get_texture_region(assets, fallback, "");
             }
         }
     }

src/assets/assets_util.hpp

@@ -13,7 +13,7 @@ namespace util {
         UVRegion region;
     };
 
-    TextureRegion getTextureRegion(
+    TextureRegion get_texture_region(
         const Assets& assets,
         const std::string& name,
         const std::string& fallback

src/graphics/core/Batch3D.cpp

@@ -106,7 +106,7 @@ void Batch3D::face(
            tint.r, tint.g, tint.b, tint.a);
 }
 
-void Batch3D::texture(Texture* new_texture){
+void Batch3D::texture(const Texture* new_texture){
     if (currentTexture == new_texture)
         return;
     flush();

src/graphics/core/Batch3D.hpp

@@ -18,7 +18,7 @@ class Batch3D : public Flushable {
     std::unique_ptr<Texture> blank;
     size_t index;
     
-    Texture* currentTexture;
+    const Texture* currentTexture;
 
     void vertex(
         float x, float y, float z,
@@ -47,11 +47,36 @@ public:
     ~Batch3D();
 
     void begin();
-    void texture(Texture* texture);
-    void sprite(glm::vec3 pos, glm::vec3 up, glm::vec3 right, float w, float h, const UVRegion& uv, glm::vec4 tint);
-    void xSprite(float w, float h, const UVRegion& uv, const glm::vec4 tint, bool shading=true);
-    void cube(const glm::vec3 coords, const glm::vec3 size, const UVRegion(&texfaces)[6], const glm::vec4 tint, bool shading=true);
-    void blockCube(const glm::vec3 size, const UVRegion(&texfaces)[6], const glm::vec4 tint, bool shading=true);
+    void texture(const Texture* texture);
+    void sprite(
+        glm::vec3 pos,
+        glm::vec3 up,
+        glm::vec3 right,
+        float w,
+        float h,
+        const UVRegion& uv,
+        glm::vec4 tint
+    );
+    void xSprite(
+        float w,
+        float h,
+        const UVRegion& uv,
+        const glm::vec4 tint,
+        bool shading = true
+    );
+    void cube(
+        const glm::vec3 coords,
+        const glm::vec3 size,
+        const UVRegion (&texfaces)[6],
+        const glm::vec4 tint,
+        bool shading = true
+    );
+    void blockCube(
+        const glm::vec3 size,
+        const UVRegion (&texfaces)[6],
+        const glm::vec4 tint,
+        bool shading = true
+    );
     void vertex(glm::vec3 pos, glm::vec2 uv, glm::vec4 tint);
     void point(glm::vec3 pos, glm::vec4 tint);
     void flush() override;

src/graphics/render/ModelBatch.cpp

@@ -154,7 +154,7 @@ void ModelBatch::setTexture(const std::string& name,
         }
     }
 
-    auto textureRegion = util::getTextureRegion(*assets, name, "blocks:notfound");
+    auto textureRegion = util::get_texture_region(*assets, name, "blocks:notfound");
     setTexture(textureRegion.texture);
     region = textureRegion.region;
 }

src/graphics/render/WorldRenderer.cpp

@@ -9,6 +9,7 @@
 #include <memory>
 
 #include "assets/Assets.hpp"
+#include "assets/assets_util.hpp"
 #include "content/Content.hpp"
 #include "engine.hpp"
 #include "frontend/LevelFrontend.hpp"
@@ -461,12 +462,14 @@ void WorldRenderer::renderBlockOverlay(const DrawContext& wctx, const Assets& as
         if (def.overlayTexture.empty()) {
             return;
         }
+        auto textureRegion = util::get_texture_region(
+            assets, def.overlayTexture, "blocks:notfound"
+        );
         DrawContext ctx = wctx.sub();
         ctx.setDepthTest(false);
         ctx.setCullFace(false);
         
         auto& shader = assets.require<Shader>("ui3d");
-        auto& atlas = assets.require<Atlas>("blocks");
         shader.use();
         batch3d->begin();
         shader.uniformMatrix("u_projview", glm::mat4(1.0f));
@@ -479,14 +482,14 @@ void WorldRenderer::renderBlockOverlay(const DrawContext& wctx, const Assets& as
             glm::min(1.0f, Lightmap::extract(light, 2) / 15.0f + s),
             1.0f
         );
-        batch3d->texture(atlas.getTexture());
+        batch3d->texture(textureRegion.texture);
         batch3d->sprite(
             glm::vec3(),
             glm::vec3(0, 1, 0),
             glm::vec3(1, 0, 0),
             2,
             2,
-            atlas.get(def.overlayTexture),
+            textureRegion.region,
             tint
         );
         batch3d->flush();

src/graphics/ui/elements/InventoryView.cpp

@@ -176,7 +176,7 @@ void SlotView::draw(const DrawContext* pctx, Assets* assets) {
         }
         case ItemIconType::SPRITE: {
             auto textureRegion =
-                util::getTextureRegion(*assets, item.icon, "blocks:notfound");
+                util::get_texture_region(*assets, item.icon, "blocks:notfound");
             
             batch->texture(textureRegion.texture);
             batch->rect(