1 files changed, 21 insertions, 0 deletions
diff --git a/ComputeShaders/repeatUtils.hlsli b/ComputeShaders/repeatUtils.hlsli
new file mode 100644
index 0000000..1181501
--- /dev/null
+++ b/ComputeShaders/repeatUtils.hlsli
@@ -0,0 +1,21 @@
+inline uint rowOffset( uint3 idx, uint4 strides )
+{
+	return idx[ 0 ] * strides[ 1 ] + idx[ 1 ] * strides[ 2 ] + idx[ 2 ] * strides[ 3 ];
+}
+
+// Initial iterator state for a row of the output tensor
+// x = current index, y = index increment, z = end of the index
+inline uint3 tensorIteratorState( uint3 group, uint thread, uint4 size, uint4 stride )
+{
+	uint3 res;
+	res.x = rowOffset( group, stride );
+	res.y = THREADS * stride[ 0 ];
+	res.z = res.x + size[ 0 ] * stride[ 0 ];
+	res.x += thread * stride[ 0 ];
+	return res;
+}
+
+// Handle a complete row of output tensor, using the iterator made by tensorIteratorState() function
+#define ROW_LOOP( ts ) for( ; ts.x < ts.z; ts.x += ts.y )
+// Same as above, using different row length
+#define ROW_LOOP_EX( ts, len, stride ) for( ; ts.x < ts.z; ts.x += len * stride[ 0 ] )
+\ No newline at end of file