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Shader: Add type functions

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This commit is contained in:
Lynix
2020-09-22 21:50:07 +02:00
parent 9c2c62b063
commit 79c53061e0
8 changed files with 143 additions and 29 deletions
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7
include/Nazara/Shader/ShaderExpressionType.hpp
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@@ -15,6 +15,13 @@
namespace Nz
{
using ShaderExpressionType = std::variant<ShaderNodes::BasicType, std::string>;
inline bool IsBasicType(const ShaderExpressionType& type);
inline bool IsMatrixType(const ShaderExpressionType& type);
inline bool IsSamplerType(const ShaderExpressionType& type);
inline bool IsStructType(const ShaderExpressionType& type);
}
#include <Nazara/Shader/ShaderExpressionType.inl>
#endif // NAZARA_SHADER_EXPRESSIONTYPE_HPP

107
include/Nazara/Shader/ShaderExpressionType.inl Normal file
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@@ -0,0 +1,107 @@
// 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/ShaderExpressionType.hpp>
#include <Nazara/Shader/Debug.hpp>
namespace Nz
{
inline bool IsBasicType(const ShaderExpressionType& type)
{
return std::visit([&](auto&& arg)
{
using T = std::decay_t<decltype(arg)>;
if constexpr (std::is_same_v<T, ShaderNodes::BasicType>)
return true;
else if constexpr (std::is_same_v<T, std::string>)
return false;
else
static_assert(AlwaysFalse<U>::value, "non-exhaustive visitor");
}, type);
}
inline bool IsMatrixType(const ShaderExpressionType& type)
{
using namespace ShaderNodes;
if (!IsBasicType(type))
return false;
switch (std::get<BasicType>(type))
{
case BasicType::Mat4x4:
return true;
case BasicType::Boolean:
case BasicType::Float1:
case BasicType::Float2:
case BasicType::Float3:
case BasicType::Float4:
case BasicType::Int1:
case BasicType::Int2:
case BasicType::Int3:
case BasicType::Int4:
case BasicType::Sampler2D:
case BasicType::Void:
case BasicType::UInt1:
case BasicType::UInt2:
case BasicType::UInt3:
case BasicType::UInt4:
return false;
}
return false;
}
inline bool IsSamplerType(const ShaderExpressionType& type)
{
using namespace ShaderNodes;
if (!IsBasicType(type))
return false;
switch (std::get<BasicType>(type))
{
case BasicType::Sampler2D:
return true;
case BasicType::Boolean:
case BasicType::Float1:
case BasicType::Float2:
case BasicType::Float3:
case BasicType::Float4:
case BasicType::Int1:
case BasicType::Int2:
case BasicType::Int3:
case BasicType::Int4:
case BasicType::Mat4x4:
case BasicType::Void:
case BasicType::UInt1:
case BasicType::UInt2:
case BasicType::UInt3:
case BasicType::UInt4:
return false;
}
return false;
}
inline bool IsStructType(const ShaderExpressionType& type)
{
return std::visit([&](auto&& arg)
{
using T = std::decay_t<decltype(arg)>;
if constexpr (std::is_same_v<T, ShaderNodes::BasicType>)
return false;
else if constexpr (std::is_same_v<T, std::string>)
return true;
else
static_assert(AlwaysFalse<U>::value, "non-exhaustive visitor");
}, type);
}
}
#include <Nazara/Shader/DebugOff.hpp>