graphics: transition font atlas back to ShaderResource after UpdateSubResource

xen2 · xen2 · commit 542600126a44 · 2026-04-23T22:12:56.000+09:00
Mirrors 4ca5734 (lightClusters). UpdateSubResource leaves the atlas in CopyDest; with auto-transitions removed in 21741f8, the next sprite-batch sample reads a CopyDest-state texture. On D3D12 with Enhanced Barriers this doesn't trip a hard validation error — just returns undefined content — so glyphs uploaded later in the frame (CJK rows in TestDynamicSpriteFontVarious) render blank.
diff --git a/sources/engine/Stride.Graphics/Font/FontCacheManager.cs b/sources/engine/Stride.Graphics/Font/FontCacheManager.cs
@@ -125,6 +125,10 @@ public void UploadCharacterBitmap(CommandList commandList, CharacterSpecificatio
                     }
                 }
                 ArrayPool<byte>.Shared.Return(expandedBuffer);
+
+                // UpdateSubResource leaves the atlas in CopyDest; transition back so the next
+                // sprite-batch sample sees ShaderResource without relying on a lazy transition.
+                commandList.ResourceBarrierTransition(cacheTextures[0], BarrierLayout.ShaderResource);
             }
 
             // update the glyph data

Original file line number	Diff line number	Diff line change
`@@ -125,6 +125,10 @@ public void UploadCharacterBitmap(CommandList commandList, CharacterSpecificatio`
`125`	`125`	`}`
`126`	`126`	`}`
`127`	`127`	`ArrayPool<byte>.Shared.Return(expandedBuffer);`
	`128`	`+`
	`129`	`+ // UpdateSubResource leaves the atlas in CopyDest; transition back so the next`
	`130`	`+ // sprite-batch sample sees ShaderResource without relying on a lazy transition.`
	`131`	`+ commandList.ResourceBarrierTransition(cacheTextures[0], BarrierLayout.ShaderResource);`
`128`	`132`	`}`
`129`	`133`
`130`	`134`	`// update the glyph data`