diff --git a/TextureFileCreater.cpp b/TextureFileCreater.cpp
index 59cef72..ca6c0ec 100644
--- a/TextureFileCreater.cpp
+++ b/TextureFileCreater.cpp
@@ -104,7 +104,7 @@ bool TextureFileCreater::Write(void *data)
     if(fmt->format>ColorFormat::COMPRESS)
     {
         dos->WriteUint8(0);
-        dos->WriteUint32(uint(fmt->format)-uint(ColorFormat::COMPRESS));
+        dos->WriteUint16(uint(fmt->format)-uint(ColorFormat::COMPRESS));
         dos->WriteUint32(total_bytes);
     }
     else
diff --git a/TextureFileCreaterCompress.cpp b/TextureFileCreaterCompress.cpp
index 06cde44..979b692 100644
--- a/TextureFileCreaterCompress.cpp
+++ b/TextureFileCreaterCompress.cpp
@@ -148,6 +148,7 @@ public:
 
         constexpr CMP_FORMAT fmt_list[]=
         {
+            CMP_FORMAT_BC1,     //ColorFormat::BC1
             CMP_FORMAT_BC1,     //ColorFormat::BC1
             CMP_FORMAT_BC2,     //ColorFormat::BC2
             CMP_FORMAT_BC3,     //ColorFormat::BC3
@@ -160,7 +161,8 @@ public:
 
         constexpr char fmt_name_list[][8]=
         {
-            "BC1",
+            "BC1RGB",
+            "BC1RGBA",
             "BC2",
             "BC3",
             "BC4",
@@ -170,7 +172,7 @@ public:
             "BC7"
         };
 
-        const int fmt_index=size_t(fmt->format)-size_t(ColorFormat::BC1);
+        const int fmt_index=size_t(fmt->format)-size_t(ColorFormat::BC1RGB);
             
         kernel_options.height       =image->height();
         kernel_options.width        =image->width();
diff --git a/pixel_format.cpp b/pixel_format.cpp
index bcb97ee..e0940ca 100644
--- a/pixel_format.cpp
+++ b/pixel_format.cpp
@@ -51,7 +51,8 @@ namespace hgl
         
         {ColorFormat::COMPRESS, "COMPRESS", 0,{ 0 , 0 , 0 , 0 },{ 0, 0, 0, 0},ColorDataType::NONE},
 
-        {ColorFormat::BC1,      "BC1",      0,{ 0 , 0 , 0 , 0 },{ 0, 0, 0, 0},ColorDataType::NONE},
+        {ColorFormat::BC1RGB,   "BC1RGB",   0,{ 0 , 0 , 0 , 0 },{ 0, 0, 0, 0},ColorDataType::NONE},
+        {ColorFormat::BC1RGBA,  "BC1RGBA",  0,{ 0 , 0 , 0 , 0 },{ 0, 0, 0, 0},ColorDataType::NONE},
         {ColorFormat::BC2,      "BC2",      0,{ 0 , 0 , 0 , 0 },{ 0, 0, 0, 0},ColorDataType::NONE},
         {ColorFormat::BC3,      "BC3",      0,{ 0 , 0 , 0 , 0 },{ 0, 0, 0, 0},ColorDataType::NONE},
         {ColorFormat::BC4,      "BC4",      0,{ 0 , 0 , 0 , 0 },{ 0, 0, 0, 0},ColorDataType::NONE},
@@ -70,7 +71,7 @@ void PrintFormatList()
 
     for(uint i=0;i<PixelFormatCount;i++)
     {
-        std::cout<<pf->channels<<": "<<std::setw(10)<<pf->name<<" "<<std::setw(3)<<pf->GetPixelBytes()<<" bits "<<ColorDataName[(uint)(pf->type)]<<std::endl;
+        std::cout<<int(pf->channels)<<": "<<std::setw(10)<<pf->name<<" "<<std::setw(3)<<pf->GetPixelBytes()<<" bits "<<ColorDataName[(uint)(pf->type)]<<std::endl;
 
         ++pf;
     }
diff --git a/pixel_format.h b/pixel_format.h
index 921a3e7..e39317b 100644
--- a/pixel_format.h
+++ b/pixel_format.h
@@ -37,7 +37,8 @@ enum class ColorFormat
 
     COMPRESS,
 
-    BC1,
+    BC1RGB,
+    BC1RGBA,
     BC2,
     BC3,
     BC4,