gfx: Add `ITransientResourceHeap::finish()` to avoid `Signal` after every queue submit. (#2158)

Co-authored-by: Yong He <yhe@nvidia.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/slang-gfx.h b/slang-gfx.h
index e9d33bc98..5350444e9 100644
--- a/slang-gfx.h
+++ b/slang-gfx.h
@@ -1890,8 +1890,17 @@ public:
         uint32_t constantBufferDescriptorCount;
         uint32_t accelerationStructureDescriptorCount;
     };
+
+    // Waits until GPU commands issued before last call to `finish()` has been completed, and resets
+    // all transient resources holds by the heap.
+    // This method must be called before using the transient heap to issue new GPU commands.
+    // In most situations this method should be called at the beginning of each frame.
     virtual SLANG_NO_THROW Result SLANG_MCALL synchronizeAndReset() = 0;
 
+    // Must be called when the application has done using this heap to issue commands. In most situations
+    // this method should be called at the end of each frame.
+    virtual SLANG_NO_THROW Result SLANG_MCALL finish() = 0;
+
     // Command buffers are one-time use. Once it is submitted to the queue via
     // `executeCommandBuffers` a command buffer is no longer valid to be used any more. Command
     // buffers must be closed before submission. The current D3D12 implementation has a limitation