added more infos for GL_BUFFER_USAGE

ickk · Nov 8, 2017 · 7146d01 · 7146d01
1 parent 95ef411
commit 7146d01
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/es3/glMapBufferRange.xhtml b/es3/glMapBufferRange.xhtml
@@ -228,7 +228,9 @@
             Mappings to the data stores of buffer objects may have nonstandard performance characteristics.
             For example, such mappings may be marked as uncacheable regions of memory, and in such cases reading from them may be very slow.
             To ensure optimal performance, the client should use the mapping in a fashion consistent
-            with the values of  <code class="constant">GL_BUFFER_USAGE</code> and <em class="parameter"><code>access</code></em>.
+            with the values of <code class="constant">GL_BUFFER_USAGE</code> (see <code class="function">glGetBufferParameter</code>
+	    and <em class="parameter"><code>usage</code></em> of <code class="function">glBufferData</code>)
+	    and <em class="parameter"><code>access</code></em>.
             Using a mapping in a fashion inconsistent with these values is liable to be multiple orders of magnitude slower
             than using normal memory.
         </p>