Complete rewrite of extension handling

[libs/gl.git] / source / texture.cpp

diff --git a/source/texture.cpp b/source/texture.cpp
index d22f189bdcad4cc0a3c0e2f7edb0d55f30c5adaf..c8a1371c5b0a7724effdeb33ec7f529e70372a47 100644 (file)
--- a/source/texture.cpp
+++ b/source/texture.cpp
@@ -1,5 +1,6 @@
 #include <msp/strings/format.h>
 #include "error.h"
+#include "sgis_generate_mipmap.h"
 #include "texture.h"
 #include "texunit.h"
 
@@ -8,27 +9,22 @@ using namespace std;
 namespace Msp {
 namespace GL {
 
-istream &operator>>(istream &in, TextureFilter &tf)
+void operator>>(const LexicalConverter &c, TextureFilter &tf)
 {
-       string str;
-       in>>str;
-
-       if(str=="NEAREST")
+       if(c.get()=="NEAREST")
                tf = NEAREST;
-       else if(str=="LINEAR")
+       else if(c.get()=="LINEAR")
                tf = LINEAR;
-       else if(str=="NEAREST_MIPMAP_NEAREST")
+       else if(c.get()=="NEAREST_MIPMAP_NEAREST")
                tf = NEAREST_MIPMAP_NEAREST;
-       else if(str=="NEAREST_MIPMAP_LINEAR")
+       else if(c.get()=="NEAREST_MIPMAP_LINEAR")
                tf = NEAREST_MIPMAP_LINEAR;
-       else if(str=="LINEAR_MIPMAP_NEAREST")
+       else if(c.get()=="LINEAR_MIPMAP_NEAREST")
                tf = LINEAR_MIPMAP_NEAREST;
-       else if(str=="LINEAR_MIPMAP_LINEAR")
+       else if(c.get()=="LINEAR_MIPMAP_LINEAR")
                tf = LINEAR_MIPMAP_LINEAR;
        else
-               in.setstate(ios_base::failbit);
-
-       return in;
+               throw lexical_error(format("conversion of '%s' to TextureFilter", c.get()));
 }
 
 
@@ -129,6 +125,8 @@ void Texture::set_wrap_r(TextureWrap w)
 
 void Texture::set_generate_mipmap(bool gm)
 {
+       if(gm)
+               static Require _req(SGIS_generate_mipmap);
        gen_mipmap = gm;
        update_parameter(GENERATE_MIPMAP);
 }