From 5ed4e4ca50d968c2e868b0d676121058fae434d6 Mon Sep 17 00:00:00 2001
From: Jonathan Gray <jsg@jsg.id.au>
Date: Sat, 20 Apr 2013 22:41:21 +1000
Subject: [PATCH] avoid overflowing buffer with GL_EXTENSIONS, from ioquake3

---
 code/renderer/tr_init.cpp | 25 ++++++++++++++++++++++++-
 1 file changed, 24 insertions(+), 1 deletion(-)

diff --git a/code/renderer/tr_init.cpp b/code/renderer/tr_init.cpp
index 3e6644f..fbf0589 100644
--- a/code/renderer/tr_init.cpp
+++ b/code/renderer/tr_init.cpp
@@ -856,6 +856,27 @@ void GL_SetDefaultState( void )
 #endif
 }
 
+/*
+================
+R_PrintLongString
+
+Workaround for VID_Printf's 4096 characters buffer limit.
+================
+*/
+void R_PrintLongString(const char *string) {
+	char buffer[4096];
+	const char *p;
+	int size = strlen(string);
+
+	p = string;
+	while(size > 0)
+	{
+		Q_strncpyz(buffer, p, sizeof (buffer) );
+		VID_Printf( PRINT_ALL, "%s", buffer );
+		p += 4095;
+		size -= 4095;
+	}
+}
 
 /*
 ================
@@ -888,7 +909,9 @@ void GfxInfo_f( void )
 	VID_Printf( PRINT_ALL, "\nGL_VENDOR: %s\n", glConfig.vendor_string );
 	VID_Printf( PRINT_ALL, "GL_RENDERER: %s\n", glConfig.renderer_string );
 	VID_Printf( PRINT_ALL, "GL_VERSION: %s\n", glConfig.version_string );
-	VID_Printf( PRINT_ALL, "GL_EXTENSIONS: %s\n", glConfig.extensions_string );
+	VID_Printf( PRINT_ALL, "GL_EXTENSIONS: " );
+	R_PrintLongString( glConfig.extensions_string );
+	VID_Printf( PRINT_ALL, "\n" );
 	VID_Printf( PRINT_ALL, "GL_MAX_TEXTURE_SIZE: %d\n", glConfig.maxTextureSize );
 	VID_Printf( PRINT_ALL, "GL_MAX_ACTIVE_TEXTURES_ARB: %d\n", glConfig.maxActiveTextures );
 	VID_Printf( PRINT_ALL, "\nPIXELFORMAT: color(%d-bits) Z(%d-bit) stencil(%d-bits)\n", glConfig.colorBits, glConfig.depthBits, glConfig.stencilBits );