Preallocate upfront each frame

defold · Mar 26, 2023 · 20c7ef4 · 20c7ef4
1 parent 4ada1fc
commit 20c7ef4
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Showing 3 changed files with 15 additions and 1 deletion.
diff --git a/defold-spine/commonsrc/vertices.cpp b/defold-spine/commonsrc/vertices.cpp
@@ -137,7 +137,8 @@ uint32_t CalcVertexBufferSize(const spSkeleton* skeleton, uint32_t* out_max_tria
                 max_triangle_count = num_tri_vertices;
         }
     }
-    *out_max_triangle_count = max_triangle_count;
+    if (out_max_triangle_count)
+        *out_max_triangle_count = max_triangle_count;
     return count;
 }
 

diff --git a/defold-spine/include/common/vertices.h b/defold-spine/include/common/vertices.h
@@ -26,6 +26,7 @@ struct SpineModelBounds
     float maxY;
 };
 
+uint32_t CalcVertexBufferSize(const spSkeleton* skeleton, uint32_t* out_max_triangle_count);
 uint32_t GenerateVertexData(dmArray<SpineVertex>& vertex_buffer, const spSkeleton* skeleton, const dmVMath::Matrix4& world);
 void GetSkeletonBounds(const spSkeleton* skeleton, SpineModelBounds& bounds);
 

diff --git a/defold-spine/src/comp_spine_model.cpp b/defold-spine/src/comp_spine_model.cpp
@@ -758,6 +758,18 @@ namespace dmSpine
 
         uint32_t vertex_start = world->m_VertexBufferData.Size();
         uint32_t vertex_count = 0;
+
+        for (uint32_t *i = begin; i != end; ++i)
+        {
+            component_index = (uint32_t)buf[*i].m_UserData;
+            const SpineModelComponent* component = (const SpineModelComponent*) components[component_index];
+            vertex_count += dmSpine::CalcVertexBufferSize(component->m_SkeletonInstance, 0);
+        }
+
+        if (vertex_count > world->m_VertexBufferData.Capacity())
+            world->m_VertexBufferData.SetCapacity(vertex_count);
+
+        vertex_count = 0;
         for (uint32_t *i = begin; i != end; ++i)
         {
             component_index = (uint32_t)buf[*i].m_UserData;