Update headers / index for new extension
diff --git a/api/GLES2/gl2ext.h b/api/GLES2/gl2ext.h
index 23a1d4d..477349b 100644
--- a/api/GLES2/gl2ext.h
+++ b/api/GLES2/gl2ext.h
@@ -19,7 +19,7 @@
 #define GL_APIENTRYP GL_APIENTRY*
 #endif
 
-/* Generated on date 20210420 */
+/* Generated on date 20210512 */
 
 /* Generated C header for:
  * API: gles2
@@ -2444,6 +2444,11 @@
 #endif
 #endif /* GL_INTEL_performance_query */
 
+#ifndef GL_MESA_bgra
+#define GL_MESA_bgra 1
+#define GL_BGR_EXT                        0x80E0
+#endif /* GL_MESA_bgra */
+
 #ifndef GL_MESA_framebuffer_flip_x
 #define GL_MESA_framebuffer_flip_x 1
 #define GL_FRAMEBUFFER_FLIP_X_MESA        0x8BBC
diff --git a/extensions/esext.php b/extensions/esext.php
index 6cfb60a..94a5a64 100644
--- a/extensions/esext.php
+++ b/extensions/esext.php
@@ -695,4 +695,6 @@
 </li>
 <li value=334><a href="extensions/QCOM/QCOM_render_shared_exponent.txt">GL_QCOM_render_shared_exponent</a>
 </li>
+<li value=335><a href="extensions/MESA/MESA_bgra.txt">GL_MESA_bgra</a>
+</li>
 </ol>