Added opengl logo to the website, some minor changes to the pages and…

… tutorial

git-svn-id: svn+ssh://rubyforge.org/var/svn/ruby-opengl/trunk@300 0bf6db90-c31b-0410-8265-cbe0ef131713

Rakefile

@@ -34,7 +34,7 @@ WEBSITE_MKDN = FileList['./doc/*.txt'] << 'README.txt'
 NICE_HTML_DOCS = WEBSITE_MKDN.ext('html')
 
 # defines columns in the HTML extension list
-GLEXT_VERSIONS = ["svn","0.50"]
+GLEXT_VERSIONS = ["svn","0.60","0.50"]
 
 CLEAN.include("ext/gl*/Rakefile", "ext/*/mkrf.log", "ext/*/*.so", 
               "ext/**/*.bundle", "lib/*.so", "lib/*.bundle", "ext/*/*.o{,bj}", 
@@ -44,6 +44,7 @@ CLOBBER.include("*.plain", "doc/*.plain", "doc/*.snip", "*.html",
                 "doc/*.html", "website/*.html", "website/images/*")
 # Make sure these files aren't deleted in a clobber op
 CLOBBER.exclude("website/images/tab_bottom.gif")
+CLOBBER.exclude("website/images/*.jpg")
 
 setup_extension('gl', 'gl')
 setup_extension('glu', 'glu')

doc/scientific_use.txt

@@ -26,3 +26,10 @@ Links
 * <http://narray.rubyforge.org/> -- Numerical n-dimensional Array class.
 * <http://www.kitp.ucsb.edu/~paxton/tioga.html> -- Tioga. Create plots using
   Ruby and TeX.
+
+<br/>
+<br/>
+<br/>
+<br/>
+<br/>
+<br/>

doc/supplies/page_template.html

@@ -24,6 +24,7 @@
 	</ul>
 
 	<div id="sidebar">
+    <img src="./images/ogl.jpg">
 		<h3>Contact</h3>
 		<ul>
 			<li><a href="http://rubyforge.org/mail/?group_id=2103">Mailing list</a></li>

doc/thanks.txt

@@ -22,3 +22,8 @@ Aside from big thank-you's to the core devs, special thanks also goes to:
 <br/>
 <br/>
 <br/>
+<br/>
+<br/>
+<br/>
+<br/>
+<br/>

doc/tutorial.txt

@@ -219,15 +219,15 @@ Reverse works just the same:
 <a name="error_checking"></a>
 Error Checking
 --------------
-Starting with version 0.60.0, ruby-opengl provides automatic checking of OpenGL errors.
+Starting with version 0.60.0, ruby-opengl performs automatic checking of OpenGL errors.
 Functions:
 
 	{{ruby}}
 	Gl.enable_error_checking
 	Gl.disable_error_checking
 	Gl.is_error_checking_enabled? # true/false
 
-When the checking is enabled, glGetError() is executed after each OpenGL call, and should error
+When the checking is enabled (default), glGetError() is executed after each OpenGL call, and should error
 occur, Gl::Error exception is raised:
 
 	{{ruby}}
@@ -246,8 +246,9 @@ occur, Gl::Error exception is raised:
 		...
 	end
 
-It is usually good idea to enable error checking for all your code, as OpenGL errors have habit to pop-up in
-unexpected places, and the performance hit per each OpenGL call isn't that big in Ruby.
+It is usually good idea to leave error checking on for all your code, as OpenGL errors have habit to pop-up in
+unexpected places. For now there is no measurable performance hit for error checking, although this may change
+in future ruby implementations.
 
 <a name="examples"></a>
 The Examples

ext/gl/gl-error.c

@@ -15,7 +15,7 @@
 
 #include "../common/common.h"
 
-VALUE error_checking = Qfalse;
+VALUE error_checking = Qtrue;
 
 VALUE Class_GLError;
 
@@ -30,7 +30,8 @@ void check_for_glerror(void)
 	} else { /* process errors */
 		char *error_string;
 		int queued_errors = 0;
-		char message[256];
+		const int bufsize = 256;
+		char message[bufsize];
 		VALUE exc;
 
 		/* check for queued errors */
@@ -52,9 +53,9 @@ void check_for_glerror(void)
 		}
 
 		if (queued_errors==0) {
-			snprintf(message,256,"%s",error_string);
+			snprintf(message,bufsize,"%s",error_string);
 		} else {
-			snprintf(message,256,"%s [%i queued error(s) cleaned]",error_string,queued_errors);
+			snprintf(message,bufsize,"%s [%i queued error(s) cleaned]",error_string,queued_errors);
 		}
 
 		exc = rb_funcall(Class_GLError, rb_intern("new"), 2, rb_str_new2(message), INT2NUM(error));
@@ -91,7 +92,7 @@ void gl_init_error(VALUE module)
 {
 	Class_GLError = rb_define_class_under(module, "Error", rb_eStandardError);
 
-	rb_define_method(Class_GLError, "initialize", GLError_initialize, 2); 
+	rb_define_method(Class_GLError, "initialize", GLError_initialize, 2);
 	rb_define_attr(Class_GLError, "id", 1, 0);
 
 	rb_define_module_function(module, "enable_error_checking", enable_error_checking, 0);