1 files changed, 103 insertions, 0 deletions
diff --git a/include/NvFlowShader.h b/include/NvFlowShader.h
new file mode 100644
index 0000000..083af8e
--- /dev/null
+++ b/include/NvFlowShader.h
@@ -0,0 +1,103 @@
+/*
+ * Copyright (c) 2014-2017, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * NVIDIA CORPORATION and its licensors retain all intellectual property
+ * and proprietary rights in and to this software, related documentation
+ * and any modifications thereto.  Any use, reproduction, disclosure or
+ * distribution of this software and related documentation without an express
+ * license agreement from NVIDIA CORPORATION is strictly prohibited.
+ */
+
+#ifndef NV_FLOW_SHADER_H
+#define NV_FLOW_SHADER_H
+
+// --------------------------- NvFlow Shader Parameters -------------------------------
+///@defgroup NvFlowContext
+///@{
+
+#if (NV_FLOW_SHADER_UTILS != 0)
+
+int3 NvFlow_tableVal_to_coord(uint val)
+{
+	uint valInv = ~val;
+	return int3(
+		(valInv >> 0) & 0x3FF,
+		(valInv >> 10) & 0x3FF,
+		(valInv >> 20) & 0x3FF);
+}
+
+#define NV_FLOW_DISPATCH_ID_TO_VIRTUAL(blockListSRV, params) \
+	int3 DispatchIDToVirtual(uint3 tidx) \
+	{ \
+		uint blockID = tidx.x >> params.blockDimBits.x; \
+		int3 vBlockIdx = NvFlow_tableVal_to_coord(blockListSRV[blockID]); \
+		int3 vidx = (vBlockIdx << params.blockDimBits.xyz) | (tidx & (params.blockDim.xyz - int3(1,1,1))); \
+		return vidx; \
+	}
+
+#define NV_FLOW_VIRTUAL_TO_REAL(name, blockTableSRV, params) \
+	int3 name(int3 vidx) \
+	{ \
+		if(params.isVTR.x != 0) \
+		{ \
+			return vidx; \
+		} \
+		else \
+		{ \
+			int3 vBlockIdx = vidx >> params.blockDimBits.xyz; \
+			int3 rBlockIdx = NvFlow_tableVal_to_coord(blockTableSRV[vBlockIdx]); \
+			int3 ridx = (rBlockIdx << params.blockDimBits.xyz) | (vidx & (params.blockDim.xyz - int3(1, 1, 1))); \
+			return ridx; \
+		} \
+	}
+
+#define NV_FLOW_VIRTUAL_TO_REAL_LINEAR(name, blockTableSRV, params) \
+	float3 name(float3 vidx) \
+	{ \
+		if(params.isVTR.x != 0) \
+		{ \
+			return vidx; \
+		} \
+		else \
+		{ \
+			float3 vBlockIdxf = params.blockDimInv.xyz * vidx; \
+			int3 vBlockIdx = int3(floor(vBlockIdxf)); \
+			int3 rBlockIdx = NvFlow_tableVal_to_coord(blockTableSRV[vBlockIdx]); \
+			float3 rBlockIdxf = float3(rBlockIdx); \
+			float3 ridx = float3(params.linearBlockDim.xyz * rBlockIdx) + float3(params.blockDim.xyz) * (vBlockIdxf - float3(vBlockIdx)) + float3(params.linearBlockOffset.xyz); \
+			return ridx; \
+		} \
+	}
+
+#endif
+
+//! Parameters for shaders using the point format (no linear interpolation)
+struct NvFlowShaderPointParams
+{
+	NvFlowUint4 isVTR;
+	NvFlowUint4 blockDim;
+	NvFlowUint4 blockDimBits;
+	NvFlowUint4 poolGridDim;
+	NvFlowUint4 gridDim;
+};
+
+//! Parameters for shaders using the linear format (linear interpolation)
+struct NvFlowShaderLinearParams
+{
+	NvFlowUint4 isVTR;
+	NvFlowUint4 blockDim;
+	NvFlowUint4 blockDimBits;
+	NvFlowUint4 poolGridDim;
+	NvFlowUint4 gridDim;
+
+	NvFlowFloat4 blockDimInv;
+	NvFlowUint4 linearBlockDim;
+	NvFlowUint4 linearBlockOffset;
+	NvFlowFloat4 dimInv;
+	NvFlowFloat4 vdim;
+	NvFlowFloat4 vdimInv;
+};
+
+///@}
+
+#endif
+\ No newline at end of file