shaderconstant.h

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
#pragma once
 
// Local includes
#include "shaderconstantdeclaration.h"
 
// External Includes
#include <nap/resource.h>
#include <nap/numeric.h>
#include <utility/dllexport.h>
 
 
namespace nap
{
    // Shader constant instance
    struct NAPAPI ShaderSpecializationConstantInfo
    {
        std::vector<VkSpecializationMapEntry> mEntries;
        std::vector<uint> mData;
    };
 
    class NAPAPI ShaderConstant : public Resource
    {
        RTTI_ENABLE(Resource)
    public:
        std::string mName;                      
        uint mValue = 0;                        
    };
 
 
    class NAPAPI ShaderConstantInstance
    {
    public:
        // Constructor
        ShaderConstantInstance(const ShaderConstantDeclaration& declaration, const ShaderConstant* constant) :
            mDeclaration(declaration), mConstant(constant), mValue((constant != nullptr) ? constant->mValue : declaration.mValue) {}
 
        const ShaderConstantDeclaration& getDeclaration() const             { return mDeclaration; }
 
        const uint getValue() const                                         { return mValue; }
 
        const ShaderConstantDeclaration& mDeclaration;
        const ShaderConstant* mConstant = nullptr;
        uint mValue = 0;
    };
}