+int * FGAPIENTRY glutGetModeValues(GLenum eWhat, int * size)
+{
+ int * array;
+
+#if TARGET_HOST_POSIX_X11
+ int attributes[9];
+ GLXFBConfig * fbconfigArray; /* Array of FBConfigs */
+ int fbconfigArraySize; /* Number of FBConfigs in the array */
+ int attribute_name = 0;
+#endif
+
+ FREEGLUT_EXIT_IF_NOT_INITIALISED("glutGetModeValues");
+
+ array = NULL;
+ *size = 0;
+
+ switch (eWhat)
+ {
+#if TARGET_HOST_POSIX_X11
+ case GLUT_AUX:
+ case GLUT_MULTISAMPLE:
+
+ attributes[0] = GLX_BUFFER_SIZE;
+ attributes[1] = GLX_DONT_CARE;
+
+ switch (eWhat)
+ {
+ case GLUT_AUX:
+ /*
+ FBConfigs are now sorted by increasing number of auxiliary
+ buffers. We want at least one buffer.
+ */
+ attributes[2] = GLX_AUX_BUFFERS;
+ attributes[3] = 1;
+ attributes[4] = None;
+
+ attribute_name = GLX_AUX_BUFFERS;
+
+ break;
+
+
+ case GLUT_MULTISAMPLE:
+ attributes[2] = GLX_AUX_BUFFERS;
+ attributes[3] = GLX_DONT_CARE;
+ attributes[4] = GLX_SAMPLE_BUFFERS;
+ attributes[5] = 1;
+ /*
+ FBConfigs are now sorted by increasing number of samples per
+ pixel. We want at least one sample.
+ */
+ attributes[6] = GLX_SAMPLES;
+ attributes[7] = 1;
+ attributes[8] = None;
+
+ attribute_name = GLX_SAMPLES;
+
+ break;
+ }
+
+ fbconfigArray = glXChooseFBConfig(fgDisplay.Display,
+ fgDisplay.Screen,
+ attributes,
+ &fbconfigArraySize);
+
+ if (fbconfigArray != NULL)
+ {
+ int * temp_array;
+ int result; /* Returned by glXGetFBConfigAttrib. Not checked. */
+ int previous_value;
+ int i;
+
+ temp_array = malloc(sizeof(int) * fbconfigArraySize);
+ previous_value = 0;
+
+ for (i = 0; i < fbconfigArraySize; i++)
+ {
+ int value;
+
+ result = glXGetFBConfigAttrib(fgDisplay.Display,
+ fbconfigArray[i],
+ attribute_name,
+ &value);
+ if (value > previous_value)
+ {
+ temp_array[*size] = value;
+ previous_value = value;
+ (*size)++;
+ }
+ }
+
+ array = malloc(sizeof(int) * (*size));
+ for (i = 0; i < *size; i++)
+ {
+ array[i] = temp_array[i];
+ }
+
+ free(temp_array);
+ XFree(fbconfigArray);
+ }
+
+ break;
+#endif
+
+ default:
+ break;
+ }
+
+ return array;
+}
+