Adding DDS initialisation.

2 files changed, 26 insertions, 0 deletions

diff --git a/include/dds.h b/include/dds.h
index 05911d2..5a0352e 100644
--- a/include/dds.h
+++ b/include/dds.h
@@ -1,6 +1,8 @@
 #ifndef __DDS_H__
 #define __DDS_H__
 
+int ddsInit();
+
 // returns the OpenGL-generated texture index.
 int loadCompressedTexture( const char *fname );
 
diff --git a/lib/dds.c b/lib/dds.c
index 82684d5..4263bf0 100644
--- a/lib/dds.c
+++ b/lib/dds.c
@@ -296,3 +296,27 @@ int loadCompressedTexture( const char *fname )
 
     return g_compressedTextureID;
 }
+
+int ddsInit() {
+    char *ext = (char*)glGetString( GL_EXTENSIONS );
+
+    if( strstr( ext, "ARB_texture_compression" ) == NULL )
+    {
+//        MessageBox(NULL,"ARB_texture_compression extension was not found",
+//            "ERROR",MB_OK|MB_ICONEXCLAMATION);
+        return -1;
+    }
+    else
+    {
+        glCompressedTexImage2DARB = (PFNGLCOMPRESSEDTEXIMAGE2DARBPROC)glxGetProcAddress("glCompressedTexImage2DARB");
+
+        if( !glCompressedTexImage2DARB )
+        {
+//            MessageBox(NULL,"One or more ARB_texture_compression functions were not found",
+//                "ERROR",MB_OK|MB_ICONEXCLAMATION);
+            return -2;
+        }
+    }
+
+    return 0;
+}