From e44c09aa6efcca95865c10ae7ee125a4445c4b73 Mon Sep 17 00:00:00 2001
From: Wojciech Figat <wojtek@figat.pl>
Date: Thu, 21 Apr 2022 12:10:22 +0200
Subject: [PATCH] Optimize SDF model buffer flushing to be used only if needed

---
 .../Engine/Renderer/GlobalSignDistanceFieldPass.cpp | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/Source/Engine/Renderer/GlobalSignDistanceFieldPass.cpp b/Source/Engine/Renderer/GlobalSignDistanceFieldPass.cpp
index e287ba6f0..71c73c7d1 100644
--- a/Source/Engine/Renderer/GlobalSignDistanceFieldPass.cpp
+++ b/Source/Engine/Renderer/GlobalSignDistanceFieldPass.cpp
@@ -460,12 +460,6 @@ bool GlobalSignDistanceFieldPass::Render(RenderContext& renderContext, GPUContex
             }
         }
 
-        // Send models data to the GPU
-        {
-            PROFILE_GPU_CPU("Update Models");
-            _modelsBuffer->Flush(context);
-        }
-
         // Perform batched chunks rasterization
         if (!anyDraw)
         {
@@ -533,6 +527,13 @@ bool GlobalSignDistanceFieldPass::Render(RenderContext& renderContext, GPUContex
                 }
             }
 
+            // Send models data to the GPU
+            if (chunks.Count() != 0)
+            {
+                PROFILE_GPU_CPU("Update Models");
+                _modelsBuffer->Flush(context);
+            }
+
             // Rasterize non-empty chunk (first layer so can override existing chunk data)
             for (const auto& e : chunks)
             {