From 1efe1e05181a9131cbcf114122513fc91e65014f Mon Sep 17 00:00:00 2001
From: Stanislaw Halik <sthalik@misaki.pl>
Date: Mon, 26 Aug 2024 20:43:03 +0200
Subject: src/chunk: don't allocate empty ground/wall/scenery meshes

---
 src/chunk-scenery.cpp | 19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

(limited to 'src/chunk-scenery.cpp')

diff --git a/src/chunk-scenery.cpp b/src/chunk-scenery.cpp
index 2e491d4d..4bf55312 100644
--- a/src/chunk-scenery.cpp
+++ b/src/chunk-scenery.cpp
@@ -177,13 +177,18 @@ auto chunk::ensure_scenery_mesh(scenery_scratch_buffers buffers) noexcept -> sce
             i++;
         }
 
-        GL::Mesh mesh{GL::MeshPrimitive::Triangles};
-        auto vert_view = ArrayView<const std::array<vertex, 4>>{scenery_vertexes, count};
-        auto index_view = ArrayView<const std::array<UnsignedShort, 6>>{scenery_indexes, count};
-        mesh.addVertexBuffer(GL::Buffer{vert_view}, 0, tile_shader::Position{}, tile_shader::TextureCoordinates{}, tile_shader::Depth{})
-            .setIndexBuffer(GL::Buffer{index_view}, 0, GL::MeshIndexType::UnsignedShort)
-            .setCount(int32_t(6 * count));
-        scenery_mesh = move(mesh);
+        if (count == 0)
+            scenery_mesh = GL::Mesh{NoCreate};
+        else
+        {
+            GL::Mesh mesh{GL::MeshPrimitive::Triangles};
+            auto vert_view = ArrayView<const std::array<vertex, 4>>{scenery_vertexes, count};
+            auto index_view = ArrayView<const std::array<UnsignedShort, 6>>{scenery_indexes, count};
+            mesh.addVertexBuffer(GL::Buffer{vert_view}, 0, tile_shader::Position{}, tile_shader::TextureCoordinates{}, tile_shader::Depth{})
+                .setIndexBuffer(GL::Buffer{index_view}, 0, GL::MeshIndexType::UnsignedShort)
+                .setCount(int32_t(6 * count));
+            scenery_mesh = move(mesh);
+        }
     }
 
     const auto size = _objects.size();
-- 
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