60 lines
1.5 KiB
C++
60 lines
1.5 KiB
C++
#ifndef HGL_GRAPH_TEXTURE_LOADER_INCLUDE
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#define HGL_GRAPH_TEXTURE_LOADER_INCLUDE
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#include<hgl/io/InputStream.h>
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#include<hgl/type/BaseString.h>
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namespace hgl
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{
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namespace graph
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{
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#pragma pack(push,1)
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struct Tex2DFileHeader
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{
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uint8 id[6]; ///<Tex2D\x1A
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uint8 version; ///<必须为2
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bool mipmaps;
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uint32 width;
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uint32 height;
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uint8 channels;
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char colors[4];
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uint8 bits[4];
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uint8 datatype;
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public:
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const uint pixel_count()const{return width*height;}
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const uint pixel_bytes()const{return (bits[0]+bits[1]+bits[2]+bits[3])>>3;}
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const uint total_bytes()const{return pixel_count()*pixel_bytes();}
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};//
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#pragma pack(pop)
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/**
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* 2D纹理加载器
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*/
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class Texture2DLoader
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{
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protected:
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Tex2DFileHeader file_header;
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protected:
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virtual void *OnBegin(uint32)=0;
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virtual void OnEnd()=0;
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virtual void OnError(){}
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public:
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const Tex2DFileHeader *GetFileHeader()const{return &file_header;}
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public:
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virtual ~Texture2DLoader()=default;
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bool Load(io::InputStream *is);
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bool Load(const OSString &filename);
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};//class Texture2DLoader
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}//namespace graph
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}//namespace hgl
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#endif//HGL_GRAPH_TEXTURE_LOADER_INCLUDE
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