ULRE/inc/hgl/shadergen/MaterialDescriptorManager.h

#pragma once

#include<hgl/graph/VKShaderDescriptor.h>
#include<hgl/graph/VKDescriptorSetType.h>
#include<hgl/shadergen/ShaderGenNamespace.h>
#include<hgl/type/Map.h>

using namespace hgl;
using namespace hgl::graph;

SHADERGEN_NAMESPACE_BEGIN
/**
* 材质描述符管理</p>
* 该类使用于SHADER生成前，用于统计编号set/binding
*/
class MaterialDescriptorManager
{
    struct ShaderDescriptorSet
    {
        DescriptorSetType set_type;

        int set;
        int count;

        ObjectMap<AnsiString,ShaderDescriptor>  descriptor_map;

    public:

        ShaderDescriptor *AddDescriptor(VkShaderStageFlagBits ssb,ShaderDescriptor *new_sd);                       ///<添加一个描述符，如果它本身存在，则返回false
    };

    using ShaderDescriptorSetArray=ShaderDescriptorSet[size_t(DescriptorSetType::RANGE_SIZE)];

    ShaderDescriptorSetArray desc_set_array;

    Map<AnsiString,AnsiString> struct_map;
    Map<AnsiString,UBODescriptor *> ubo_map;
    Map<AnsiString,SamplerDescriptor *> sampler_map;

public:
    
    MaterialDescriptorManager();
    ~MaterialDescriptorManager()=default;

    bool AddStruct(const AnsiString &name,const AnsiString &code)
    {
        struct_map.Add(name,code);
        return(true);
    }

    bool GetStruct(const AnsiString &name,AnsiString &code) const
    {
        return(struct_map.Get(name,code));
    }

    bool hasStruct(const AnsiString &name) const
    {
        return(struct_map.KeyExist(name));
    }

    const UBODescriptor *AddUBO(VkShaderStageFlagBits ssb,DescriptorSetType set_type,UBODescriptor *sd);
    const SamplerDescriptor *AddSampler(VkShaderStageFlagBits ssb,DescriptorSetType set_type,SamplerDescriptor *sd);

    UBODescriptor *GetUBO(const AnsiString &name);
    SamplerDescriptor *GetSampler(const AnsiString &name);

    const DescriptorSetType GetSetType(const AnsiString &)const;

    void Resort();      //排序产生set号与binding号
};
SHADERGEN_NAMESPACE_END