WIP SpirvWriter

include/Nazara/Renderer/SpirvWriter.inl

@@ -0,0 +1,56 @@
+// Copyright (C) 2020 Jérôme Leclercq
+// This file is part of the "Nazara Engine - Renderer module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#include <Nazara/Renderer/SpirvWriter.hpp>
+#include <cassert>
+#include <type_traits>
+#include <Nazara/Renderer/Debug.hpp>
+
+namespace Nz
+{
+	inline void SpirvWriter::Append(const char* str)
+	{
+		return Append(std::string_view(str));
+	}
+
+	template<typename T>
+	void SpirvWriter::Append(T value)
+	{
+		assert(m_currentState);
+		m_currentState->output.push_back(static_cast<UInt32>(value));
+	}
+
+	template<typename ...Args>
+	inline void SpirvWriter::Append(Opcode opcode, const Args&... args)
+	{
+		unsigned int wordCount = 1 + (CountWord(args) + ... + 0);
+		Append(opcode, wordCount);
+		if constexpr (sizeof...(args) > 0)
+			(Append(args), ...);
+	}
+
+	template<typename T>
+	inline unsigned int SpirvWriter::CountWord(const T& value)
+	{
+		return 1;
+	}
+
+	template<typename T1, typename T2, typename ...Args>
+	unsigned int SpirvWriter::CountWord(const T1& value, const T2& value2, const Args&... rest)
+	{
+		return CountWord(value) + CountWord(value2) + (CountWord(rest) + ...);
+	}
+
+	inline unsigned int SpirvWriter::CountWord(const char* str)
+	{
+		return CountWord(std::string_view(str));
+	}
+
+	inline unsigned int SpirvWriter::CountWord(const std::string_view& str)
+	{
+		return (str.size() + 1 + 4 - 1) / 4; //< + 1 for null character
+	}
+}
+
+#include <Nazara/Renderer/DebugOff.hpp>