-\r
-/* Copyright (c) Mark J. Kilgard, 1996. */\r
-\r
-/* This program is freely distributable without licensing fees \r
- and is provided without guarantee or warrantee expressed or \r
- implied. This program is -not- in the public domain. */\r
-\r
-#include <stdlib.h>\r
-#include <string.h>\r
-#include "glutint.h"\r
-\r
-int __glutMesaSwapHackSupport = 0; /* Not supported until\r
- proven otherwise. */\r
-\r
-/* Use the "Mesa swap hack" if reasonable if and only if\r
- MESA_SWAP_HACK is set to something whose first character is\r
- not "N" or "n" AND "Brian Paul" is the vendor string AND\r
- "Mesa X11"* (or "Mesa" for backward compatibility) is the\r
- renderer string.\r
-\r
- Anyone who modifies Mesa so that glXSwapBuffers does not\r
- simply blit the previously rendered back buffer should\r
- change either their vendor or renderer string to avoid\r
- confusing GLUT. */\r
-\r
-void\r
-__glutDetermineMesaSwapHackSupport(void)\r
-{\r
- static int doneAlready = 0;\r
- char *env, *vendor, *renderer;\r
-\r
- if (doneAlready)\r
- return;\r
- env = getenv("MESA_SWAP_HACK");\r
- if (env) {\r
- if ((env[0] != 'n') && (env[0] != 'N')) {\r
- vendor = (char *) glGetString(GL_VENDOR);\r
- renderer = (char *) glGetString(GL_RENDERER);\r
-\r
- /* Old versions of X11 Mesa uses the renderer string\r
- "Mesa"; Brian plans to start using "Mesa X11" to\r
- distinguish the X version of Mesa from other flavor\r
- such as Windows or 3Dfx. */\r
-\r
-#define MESA_X11 "Mesa X11"\r
-\r
- /* XXX At some point in the future, eliminate the\r
- backward compatibility for the old "Mesa" renderer\r
- string. */\r
-\r
- if (!strcmp(vendor, "Brian Paul") && (!strcmp(renderer, "Mesa") ||\r
- !strncmp(renderer, MESA_X11, sizeof(MESA_X11) - 1)))\r
- __glutMesaSwapHackSupport = 1;\r
- }\r
- }\r
- doneAlready = 1;\r
-}\r
+
+/* Copyright (c) Mark J. Kilgard, 1996. */
+
+/* This program is freely distributable without licensing fees
+ and is provided without guarantee or warrantee expressed or
+ implied. This program is -not- in the public domain. */
+
+#include <stdlib.h>
+#include <string.h>
+#include "glutint.h"
+
+int __glutMesaSwapHackSupport = 0; /* Not supported until
+ proven otherwise. */
+
+/* Use the "Mesa swap hack" if reasonable if and only if
+ MESA_SWAP_HACK is set to something whose first character is
+ not "N" or "n" AND "Brian Paul" is the vendor string AND
+ "Mesa X11"* (or "Mesa" for backward compatibility) is the
+ renderer string.
+
+ Anyone who modifies Mesa so that glXSwapBuffers does not
+ simply blit the previously rendered back buffer should
+ change either their vendor or renderer string to avoid
+ confusing GLUT. */
+
+void
+__glutDetermineMesaSwapHackSupport(void)
+{
+ static int doneAlready = 0;
+ char *env, *vendor, *renderer;
+
+ if (doneAlready)
+ return;
+ env = getenv("MESA_SWAP_HACK");
+ if (env) {
+ if ((env[0] != 'n') && (env[0] != 'N')) {
+ vendor = (char *) glGetString(GL_VENDOR);
+ renderer = (char *) glGetString(GL_RENDERER);
+
+ /* Old versions of X11 Mesa uses the renderer string
+ "Mesa"; Brian plans to start using "Mesa X11" to
+ distinguish the X version of Mesa from other flavor
+ such as Windows or 3Dfx. */
+
+#define MESA_X11 "Mesa X11"
+
+ /* XXX At some point in the future, eliminate the
+ backward compatibility for the old "Mesa" renderer
+ string. */
+
+ if (!strcmp(vendor, "Brian Paul") && (!strcmp(renderer, "Mesa") ||
+ !strncmp(renderer, MESA_X11, sizeof(MESA_X11) - 1)))
+ __glutMesaSwapHackSupport = 1;
+ }
+ }
+ doneAlready = 1;
+}