421 lines
12 KiB
C++
421 lines
12 KiB
C++
// Copyright (c) 2012-2022 Wojciech Figat. All rights reserved.
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#pragma once
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#include "Engine/Core/Types/String.h"
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#include "Engine/Core/Object.h"
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#include "GraphNode.h"
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/// <summary>
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/// Shader source generator value container. Caches the value type and the value variable name (shader local, global parameter or constant value). Supports value type casting and component swizzle.
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/// </summary>
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struct ShaderGraphValue : Object
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{
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private:
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static const Char* _subs[];
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public:
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/// <summary>
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/// The value type.
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/// </summary>
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VariantType::Types Type;
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/// <summary>
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/// The shader value.
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/// </summary>
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String Value;
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public:
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/// <summary>
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/// Zero value (as float).
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/// </summary>
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static const ShaderGraphValue Zero;
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/// <summary>
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/// Half value (as float).
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/// </summary>
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static const ShaderGraphValue Half;
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/// <summary>
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/// One value (as float).
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/// </summary>
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static const ShaderGraphValue One;
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/// <summary>
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/// True value (as bool).
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/// </summary>
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static const ShaderGraphValue True;
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/// <summary>
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/// False value (as bool).
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/// </summary>
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static const ShaderGraphValue False;
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public:
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/// <summary>
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/// Initializes a new instance of the <see cref="ShaderGraphValue"/> struct.
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/// </summary>
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ShaderGraphValue()
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: Type(VariantType::Types::Null)
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{
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="ShaderGraphValue"/> struct.
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/// </summary>
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/// <param name="type">The type.</param>
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/// <param name="value">The value.</param>
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ShaderGraphValue(VariantType::Types type, const Char* value)
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: Type(type)
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, Value(value)
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{
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="ShaderGraphValue"/> struct.
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/// </summary>
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/// <param name="type">The type.</param>
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/// <param name="value">The value.</param>
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ShaderGraphValue(VariantType::Types type, const String& value)
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: Type(type)
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, Value(value)
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{
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="ShaderGraphValue"/> struct.
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/// </summary>
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/// <param name="value">The value.</param>
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explicit ShaderGraphValue(const bool value)
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: Type(VariantType::Types::Bool)
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, Value(value ? TEXT("true") : TEXT("false"))
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{
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="ShaderGraphValue"/> struct.
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/// </summary>
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/// <param name="value">The value.</param>
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explicit ShaderGraphValue(const float value)
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: Type(VariantType::Types::Float)
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, Value(StringUtils::ToString(value))
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{
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="ShaderGraphValue"/> struct.
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/// </summary>
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/// <param name="value">The value.</param>
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explicit ShaderGraphValue(const int32 value)
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: Type(VariantType::Types::Int)
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, Value(StringUtils::ToString(value))
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{
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="ShaderGraphValue"/> struct.
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/// </summary>
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/// <param name="v">The value.</param>
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explicit ShaderGraphValue(const Variant& v);
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public:
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/// <summary>
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/// Returns true if value is valid.
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/// </summary>
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/// <returns>True if is valid, otherwise false.</returns>
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bool IsValid() const
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{
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return Type != VariantType::Types::Null;
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}
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/// <summary>
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/// Returns true if value is invalid.
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/// </summary>
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/// <returns>True if is invalid, otherwise false.</returns>
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bool IsInvalid() const
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{
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return Type == VariantType::Types::Null;
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}
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/// <summary>
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/// Checks if value contains static part with zero.
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/// </summary>
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/// <returns>True if contains zero number.</returns>
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bool IsZero() const;
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/// <summary>
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/// Checks if value contains static part with one.
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/// </summary>
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/// <returns>True if contains one number.</returns>
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bool IsOne() const;
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/// <summary>
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/// Clears this instance.
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/// </summary>
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void Clear()
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{
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Type = VariantType::Types::Null;
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Value.Clear();
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}
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public:
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/// <summary>
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/// Formats thw value.
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/// </summary>
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/// <param name="format">The format text.</param>
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/// <param name="v1">The value.</param>
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/// <returns>The formatted value.</returns>
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static String Format(const Char* format, const ShaderGraphValue& v1)
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{
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return String::Format(format, v1.Value);
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}
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/// <summary>
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/// Formats thw value.
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/// </summary>
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/// <param name="format">The format text.</param>
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/// <param name="v1">The first value.</param>
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/// <param name="v2">The second value.</param>
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/// <returns>The formatted value.</returns>
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static String Format(const Char* format, const ShaderGraphValue& v1, const ShaderGraphValue& v2)
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{
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return String::Format(format, v1.Value, v2.Value);
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}
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/// <summary>
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/// Formats thw value.
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/// </summary>
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/// <param name="format">The format text.</param>
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/// <param name="v1">The first value.</param>
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/// <param name="v2">The second value.</param>
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/// <param name="v3">The third value.</param>
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/// <returns>The formatted value.</returns>
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static String Format(const Char* format, const ShaderGraphValue& v1, const ShaderGraphValue& v2, const ShaderGraphValue& v3)
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{
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return String::Format(format, v1.Value, v2.Value, v3.Value);
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}
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/// <summary>
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/// Formats thw value.
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/// </summary>
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/// <param name="format">The format text.</param>
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/// <param name="v1">The first value.</param>
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/// <param name="v2">The second value.</param>
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/// <param name="v3">The third value.</param>
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/// <param name="v4">The fourth value.</param>
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/// <returns>The formatted value.</returns>
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static String Format(const Char* format, const ShaderGraphValue& v1, const ShaderGraphValue& v2, const ShaderGraphValue& v3, const ShaderGraphValue& v4)
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{
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return String::Format(format, v1.Value, v2.Value, v3.Value, v4.Value);
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}
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public:
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/// <summary>
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/// Initializes the shader variable for given connection type Zero.
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/// </summary>
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/// <param name="type">The graph connection type.</param>
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/// <returns>Initial value for given type.</returns>
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static ShaderGraphValue InitForZero(VariantType::Types type);
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/// <summary>
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/// Initializes the shader variable for given connection type Half.
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/// </summary>
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/// <param name="type">The graph connection type.</param>
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/// <returns>Initial value for given type.</returns>
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static ShaderGraphValue InitForHalf(VariantType::Types type);
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/// <summary>
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/// Initializes the shader variable for given connection type One.
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/// </summary>
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/// <param name="type">The graph connection type.</param>
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/// <returns>Initial value for given type.</returns>
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static ShaderGraphValue InitForOne(VariantType::Types type);
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/// <summary>
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/// Create float2 from X and Y values.
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/// </summary>
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/// <param name="x">The x.</param>
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/// <param name="y">The y.</param>
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/// <returns>float2</returns>
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static ShaderGraphValue Float2(const ShaderGraphValue& x, const ShaderGraphValue& y)
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{
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return ShaderGraphValue(
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VariantType::Types::Vector2,
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String::Format(TEXT("float2({0}, {1})"),
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Cast(x, VariantType::Types::Float).Value,
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Cast(y, VariantType::Types::Float).Value));
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}
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/// <summary>
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/// Create float3 from X, Y and Z values.
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/// </summary>
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/// <param name="x">The x.</param>
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/// <param name="y">The y.</param>
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/// <param name="z">The z.</param>
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/// <returns>float3</returns>
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static ShaderGraphValue Float3(const ShaderGraphValue& x, const ShaderGraphValue& y, const ShaderGraphValue& z)
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{
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return ShaderGraphValue(
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VariantType::Types::Vector3,
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String::Format(TEXT("float3({0}, {1}, {2})"),
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Cast(x, VariantType::Types::Float).Value,
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Cast(y, VariantType::Types::Float).Value,
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Cast(z, VariantType::Types::Float).Value));
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}
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/// <summary>
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/// Create float4 from X, Y, Z and W values.
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/// </summary>
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/// <param name="x">The X.</param>
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/// <param name="y">The Y.</param>
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/// <param name="z">The Z.</param>
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/// <param name="w">The W.</param>
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/// <returns>float4</returns>
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static ShaderGraphValue Float4(const ShaderGraphValue& x, const ShaderGraphValue& y, const ShaderGraphValue& z, const ShaderGraphValue& w)
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{
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return ShaderGraphValue(
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VariantType::Types::Vector4,
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String::Format(TEXT("float4({0}, {1}, {2}, {3})"),
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Cast(x, VariantType::Types::Float).Value,
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Cast(y, VariantType::Types::Float).Value,
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Cast(z, VariantType::Types::Float).Value,
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Cast(w, VariantType::Types::Float).Value));
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}
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public:
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/// <summary>
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/// Gets the X component of the value. Valid only for single or vector types.
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/// </summary>
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/// <returns>The X component.</returns>
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ShaderGraphValue GetX() const
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{
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return ShaderGraphValue(VariantType::Types::Float, Value + _subs[0]);
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}
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/// <summary>
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/// Gets the Y component of the value. Valid only for vector types.
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/// </summary>
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/// <returns>The Y component.</returns>
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ShaderGraphValue GetY() const
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{
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return ShaderGraphValue(VariantType::Types::Float, Value + _subs[1]);
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}
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/// <summary>
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/// Gets the Z component of the value. Valid only for vector types.
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/// </summary>
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/// <returns>The Z component.</returns>
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ShaderGraphValue GetZ() const
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{
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return ShaderGraphValue(VariantType::Types::Float, Value + _subs[2]);
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}
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/// <summary>
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/// Gets the W component of the value. Valid only for vector types.
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/// </summary>
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/// <returns>The W component.</returns>
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ShaderGraphValue GetW() const
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{
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return ShaderGraphValue(VariantType::Types::Float, Value + _subs[3]);
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}
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public:
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/// <summary>
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/// Casts the value to the bool type.
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/// </summary>
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/// <returns>Bool</returns>
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ShaderGraphValue AsBool() const
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{
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return Cast(*this, VariantType::Types::Bool);
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}
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/// <summary>
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/// Casts the value to the integer type.
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/// </summary>
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/// <returns>Integer</returns>
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ShaderGraphValue AsInt() const
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{
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return Cast(*this, VariantType::Types::Int);
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}
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/// <summary>
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/// Casts the value to the unsigned integer type.
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/// </summary>
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/// <returns>UnsignedInteger</returns>
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ShaderGraphValue AsUint() const
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{
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return Cast(*this, VariantType::Types::Uint);
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}
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/// <summary>
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/// Casts the value to the float type.
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/// </summary>
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/// <returns>Float</returns>
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ShaderGraphValue AsFloat() const
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{
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return Cast(*this, VariantType::Types::Float);
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}
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/// <summary>
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/// Casts the value to the Vector2 type.
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/// </summary>
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/// <returns>Vector2</returns>
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ShaderGraphValue AsVector2() const
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{
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return Cast(*this, VariantType::Types::Vector2);
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}
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/// <summary>
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/// Casts the value to the Vector3 type.
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/// </summary>
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/// <returns>Vector3</returns>
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ShaderGraphValue AsVector3() const
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{
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return Cast(*this, VariantType::Types::Vector3);
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}
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/// <summary>
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/// Casts the value to the Vector4 type.
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/// </summary>
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/// <returns>Vector4</returns>
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ShaderGraphValue AsVector4() const
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{
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return Cast(*this, VariantType::Types::Vector4);
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}
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/// <summary>
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/// Casts the value from its type to the another type.
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/// </summary>
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/// <param name="to">The result type.</param>
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/// <returns>The result value.</returns>
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ShaderGraphValue Cast(const VariantType::Types to) const
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{
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return Cast(*this, to);
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}
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/// <summary>
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/// Casts the value from its type to the another type.
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/// </summary>
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/// <param name="v">The value to cast.</param>
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/// <param name="to">The result type.</param>
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/// <returns>The result value.</returns>
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static ShaderGraphValue Cast(const ShaderGraphValue& v, VariantType::Types to);
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public:
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// [Object]
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String ToString() const override
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{
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return Value;
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}
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};
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