Shader: Add basic support for Branch node in spir-v

include/Nazara/Shader/SpirvBlock.inl

@@ -0,0 +1,22 @@
+// Copyright (C) 2020 Jérôme Leclercq
+// This file is part of the "Nazara Engine - Shader generator"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#include <Nazara/Shader/SpirvBlock.hpp>
+#include <Nazara/Shader/Debug.hpp>
+
+namespace Nz
+{
+	inline SpirvBlock::SpirvBlock(SpirvWriter& writer)
+	{
+		m_labelId = writer.AllocateResultId();
+		Append(SpirvOp::OpLabel, m_labelId);
+	}
+
+	inline UInt32 SpirvBlock::GetLabelId() const
+	{
+		return m_labelId;
+	}
+}
+
+#include <Nazara/Shader/DebugOff.hpp>