Make the use of DevIL optional

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

diff --git a/source/ilwrap.cpp b/source/ilwrap.cpp
index a1ae1631776539ec5d2be163af3e8f86ced48549..b9fb4998adb39687efe7e4217439718077244ee4 100644 (file)
--- a/source/ilwrap.cpp
+++ b/source/ilwrap.cpp
@@ -5,7 +5,9 @@ Copyright © 2007  Mikko Rasa, Mikkosoft Productions
 Distributed under the LGPL
 */
 
+#ifdef WITH_DEVIL
 #include <IL/il.h>
+#endif
 #include <msp/core/except.h>
 #include "ilwrap.h"
 
@@ -16,6 +18,7 @@ namespace GL {
 
 Image::Image()
 {
+#ifdef WITH_DEVIL
        static bool init_done=false;
 
        if(!init_done)
@@ -27,29 +30,43 @@ Image::Image()
        }
 
        ilGenImages(1, &id);
+#else
+       throw Exception("DevIL support not compiled in");
+#endif
 }
 
 Image::~Image()
 {
+#ifdef WITH_DEVIL
        ilDeleteImages(1, &id);
+#endif
 }
 
 void Image::load_file(const string &fn)
 {
+#ifdef WITH_DEVIL
        ilBindImage(id);
        if(!ilLoadImage(const_cast<char *>(fn.c_str())))
                throw Exception("Error loading image "+fn);
+#else
+       (void)fn;
+#endif
 }
 
 void Image::load_lump(const void *data, unsigned size)
 {
+#ifdef WITH_DEVIL
        ilBindImage(id);
        if(!ilLoadL(IL_TYPE_UNKNOWN, const_cast<void *>(data), size))
                throw Exception("Error loading image from lump");
+#else
+       (void)data; (void)size;
+#endif
 }
 
 PixelFormat Image::get_format() const
 {
+#ifdef WITH_DEVIL
        switch(ilGetInteger(IL_IMAGE_FORMAT))
        {
        case IL_COLOR_INDEX: return COLOR_INDEX;
@@ -61,21 +78,36 @@ PixelFormat Image::get_format() const
        case IL_BGRA: return BGRA;
        default: throw InvalidParameterValue("Unknown pixel format in image");
        }
+#else
+       return RGB;
+#endif
 }
 
 unsigned Image::get_width() const
 {
+#ifdef WITH_DEVIL
        return ilGetInteger(IL_IMAGE_WIDTH);
+#else
+       return 0;
+#endif
 }
 
 unsigned Image::get_height() const
 {
+#ifdef WITH_DEVIL
        return ilGetInteger(IL_IMAGE_HEIGHT);
+#else
+       return 0;
+#endif
 }
 
 const void *Image::get_data() const
 {
+#ifdef WITH_DEVIL
        return ilGetData();
+#else
+       return 0;
+#endif
 }
 
 } // namespace GL