ShaderResource.h

#pragma once
 
// Standard.
#include <string>
#include <memory>
#include <unordered_set>
#include <optional>
 
// Custom.
#include "material/TextureManager.h"
#include "misc/Error.h"
 
namespace ne {
    class Pipeline;
    class GpuResource;
    class UploadBuffer;
    class ShaderCpuWriteResourceManager;
 
    class ShaderResourceBase {
        // Only pipeline manager is expected to call `onAfterAllPipelinesRefreshedResources`.
        friend class PipelineManager;
 
    public:
        virtual ~ShaderResourceBase() = default;
 
        [[nodiscard]] virtual std::optional<Error>
        changeUsedPipelines(const std::unordered_set<Pipeline*>& pipelinesToUse) = 0;
 
        std::string getResourceName() const;
 
    protected:
        ShaderResourceBase(const std::string& sResourceName);
 
        [[nodiscard]] virtual std::optional<Error> onAfterAllPipelinesRefreshedResources() = 0;
 
    private:
        std::string sResourceName;
    };
 
    class ShaderTextureResource : public ShaderResourceBase {
    public:
        virtual ~ShaderTextureResource() override = default;
 
        [[nodiscard]] virtual std::optional<Error>
        useNewTexture(std::unique_ptr<TextureHandle> pTextureToUse) = 0;
 
    protected:
        ShaderTextureResource(const std::string& sResourceName);
    };
} // namespace ne