support compress texture file format.

CMSceneGraph

@@ -1 +1 @@
-Subproject commit 780a97d2435577b6fc6008bb656e623c5c058431
+Subproject commit 81c18490a375fbeaa1ea99340916e44833ef6a74

example/Vulkan/DrawTile.cpp

@@ -90,7 +90,7 @@ private:
 
     bool InitTileTexture()
     {
-        tile_data=device->CreateTileData(   FMT_A1RGB5,             //纹理格式，因VK不支持实时转换，所以提交的数据格式必须与此一致
+        tile_data=device->CreateTileData(   FMT_BC1_RGBAUN,             //纹理格式，因VK不支持实时转换，所以提交的数据格式必须与此一致
                                             512,512,                //TILE大小
                                             tile_list.GetCount());  //TILE需求数量
 

inc/hgl/graph/TextureLoader.h

@@ -13,20 +13,26 @@ namespace hgl
         {
             uint8   id[6];                  ///<Tex2D\x1A
             uint8   version;                ///<必须为2
-            bool    mipmaps;
+            uint8   mipmaps;
             uint32  width;
             uint32  height;
             uint8   channels;
+
+        public:
+
+            const uint pixel_count()const{return width*height;}
+        };//struct Tex2DFileHeader
+
+        struct TexPixelFormat
+        {
             char    colors[4];
             uint8   bits[4];
             uint8   datatype;
 
         public:
 
-            const uint pixel_count()const{return width*height;}
             const uint pixel_bytes()const{return (bits[0]+bits[1]+bits[2]+bits[3])>>3;}
-            const uint total_bytes()const{return pixel_count()*pixel_bytes();}
-        };//
+        };//struct TexPixelFormat
         #pragma pack(pop)
 
         /**
@@ -38,6 +44,14 @@ namespace hgl
 
             Tex2DFileHeader file_header;
 
+            union
+            {
+                TexPixelFormat  pixel_format;
+                uint16          compress_format;
+            };
+
+            uint32 total_bytes;
+
         protected:        
 
             virtual void *OnBegin(uint32)=0;

inc/hgl/graph/TileData.h

@@ -37,8 +37,6 @@ namespace hgl
 
         protected:
 
-            uint pixel_bytes;                                                                                           ///<单个象素字节数
-
             Texture2D *tile_texture;                                                                                    ///<TileData所用的纹理对象
 
             ObjectPool<TileObject> to_pool;                                                                             ///<Tile对象池

res

@@ -1 +1 @@
-Subproject commit 89ec7b496644d38d5baf52b9fe98f74cc79ffa01
+Subproject commit 134fa86c091b40a890c64d7052af8c21d01c209e

src/RenderDevice/Vulkan/POD/VKTextureLoader.cpp

@@ -54,24 +54,24 @@ namespace
 
     constexpr uint PixelFormatCount=sizeof(pf_list)/sizeof(PixelFormat);
 
-    const VkFormat GetVulkanFormat(const Tex2DFileHeader &fh)
+    const VkFormat GetVulkanFormat(const int channels,const TexPixelFormat &tpf)
     {
         const PixelFormat *pf=pf_list;
 
         for(uint i=0;i<PixelFormatCount;i++,++pf)
         {
-            if(fh.channels!=pf->channels)continue;
-            if(fh.datatype!=(uint8)pf->type)continue;
+            if(channels!=pf->channels)continue;
+            if(tpf.datatype!=(uint8)pf->type)continue;
 
-            if(fh.colors[0]!=pf->colors[0])continue;
-            if(fh.colors[1]!=pf->colors[1])continue;
-            if(fh.colors[2]!=pf->colors[2])continue;
-            if(fh.colors[3]!=pf->colors[3])continue;
+            if(tpf.colors[0]!=pf->colors[0])continue;
+            if(tpf.colors[1]!=pf->colors[1])continue;
+            if(tpf.colors[2]!=pf->colors[2])continue;
+            if(tpf.colors[3]!=pf->colors[3])continue;
 
-            if(fh.bits[0]!=pf->bits[0])continue;
-            if(fh.bits[1]!=pf->bits[1])continue;
-            if(fh.bits[2]!=pf->bits[2])continue;
-            if(fh.bits[3]!=pf->bits[3])continue;
+            if(tpf.bits[0]!=pf->bits[0])continue;
+            if(tpf.bits[1]!=pf->bits[1])continue;
+            if(tpf.bits[2]!=pf->bits[2])continue;
+            if(tpf.bits[3]!=pf->bits[3])continue;
 
             return pf->format;
         }
@@ -107,10 +107,33 @@ namespace
 
         void *OnBegin(uint32 total_bytes) override
         {
+            constexpr VkFormat CompressFormatList[]=
+            {
+                FMT_BC1_RGBUN,
+                FMT_BC1_RGBAUN,
+                FMT_BC2UN,
+                FMT_BC3UN,
+                FMT_BC4UN,
+                FMT_BC5UN,
+                FMT_BC6UF,
+                FMT_BC6SF,
+                FMT_BC7UN
+            };
+
+            constexpr size_t CompressFormatCount=sizeof(CompressFormatList)/sizeof(VkFormat);
+
             SAFE_CLEAR(buf);
             SAFE_CLEAR(tex);
 
-            format=GetVulkanFormat(file_header);
+            if(file_header.channels==0)
+            {
+                if(compress_format<0||compress_format>=CompressFormatCount)
+                    return(nullptr);
+
+                format=CompressFormatList[compress_format];
+            }
+            else
+                format=GetVulkanFormat(file_header.channels,pixel_format);
 
             if(!CheckVulkanFormat(format))
                 return(nullptr);

src/SceneGraph/Texture2DLoader.cpp

@@ -17,10 +17,23 @@ namespace hgl
             if(file_header.version!=2)
                 return(false);
 
-            if(file_header.total_bytes()==0)
+            total_bytes=0;
+
+            if(file_header.channels==0)     //压缩格式
+            {
+                if(is->Read(&compress_format,sizeof(uint16))!=sizeof(uint16))
                     return(false);
 
-            const uint total_bytes=file_header.total_bytes();
+                if(is->Read(&total_bytes,sizeof(uint32))!=sizeof(uint32))
+                    return(false);
+            }
+            else
+            {
+                if(is->Read(&pixel_format,sizeof(TexPixelFormat))!=sizeof(TexPixelFormat))
+                    return(false);
+
+                total_bytes=file_header.pixel_count()*pixel_format.pixel_bytes();
+            }
 
             if(is->Available()<total_bytes)
                 return(false);

src/SceneGraph/TileData.cpp

@@ -48,8 +48,7 @@ namespace hgl
                 }
             }
 
-            pixel_bytes =GetStrideByFormat(tile_texture->GetFormat());
-            tile_bytes  =tile_width*tile_height*pixel_bytes;
+            tile_bytes=GetImageBytes(tile_texture->GetFormat(),tile_width*tile_height);
 
             tile_buffer=device->CreateBuffer(VK_BUFFER_USAGE_TRANSFER_SRC_BIT,tile_bytes*tile_max_count,nullptr);