[Perf] (MG_Backend/DirectVulkan): re-land content-version texture early-out; bump content version on glGenerateMipmap so cached sampled views re-sync (fixes Iris shader retrace)

2026-09-11 21:58:31 +09:00 · 2026-07-13 00:50:09 -04:00
parent ecea8054a6
commit 808c5dcc46
6 changed files with 64 additions and 0 deletions
@@ -332,6 +332,11 @@ namespace MobileGL::MG_Impl::GLImpl {
                texture.AllocateStorage(uploadTarget, level, {levelTexelSize, levelByteSize});
                texture.MarkStorageDirty(uploadTarget, level, false);
            }
+            // Mip generation grows/regenerates the level set on the GPU without marking any CPU
+            // level dirty (MarkStorageDirty(...,false) above). Bump the content version so the
+            // backend re-syncs: a cached sampled VkImageView built for the pre-generate level
+            // range would otherwise stay stale and clamp LOD>0 sampling to mip 0.
+            texture.BumpContentVersion();
            return true;
        }