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Yunus Shaikh
0431419d16
Every read and store through GuestMemory calls the flush hook first. Recorder's FlushForAccess waits for recorded GPU work over the range, records a queued label that writes it, publishes the unit shadows over it and stores the storage image results kept on the GPU for it. A storage image result is stamped only when it is stored (its write-back's MarkWritten), so ShaderMemory's stamp and check, which never read the column, could vouch for words a read would have replaced: the column skipped its read and the snapshot kept the T#s from before the result. stampWrites and unchangedSince now call GuestMemory::FlushGpuWrites over the range after the pending write query and before the tracker, as a read does, and as the dispatch cache stores pending images before it validates an entry. The stamp then covers what the flush stored, so the capture after it skips the read again. agc_shader_table_snapshot_reuse installs a flush hook that stores a new T# into the table on its first call over it. Without the flush in unchangedSince the reused snapshot keeps the old T#; without the one in stampWrites the next capture compares the table instead of skipping its read.