mesa: add KHR_no_error support for glCheckFramebufferStatus()

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>

src/mapi/glapi/gen/ARB_framebuffer_object.xml

@@ -212,7 +212,7 @@
 	<glx vendorpriv="1426" always_array="true"/>
     </function>
 
-    <function name="CheckFramebufferStatus" es2="2.0">
+    <function name="CheckFramebufferStatus" es2="2.0" no_error="true">
         <param name="target" type="GLenum"/>
 	<return type="GLenum"/>
 	<glx vendorpriv="1427"/>

src/mesa/main/fbobject.c

@@ -2848,6 +2848,16 @@ _mesa_check_framebuffer_status(struct gl_context *ctx,
 }
 
 
+GLenum GLAPIENTRY
+_mesa_CheckFramebufferStatus_no_error(GLenum target)
+{
+   GET_CURRENT_CONTEXT(ctx);
+
+   struct gl_framebuffer *fb = get_framebuffer_target(ctx, target);
+   return _mesa_check_framebuffer_status(ctx, fb);
+}
+
+
 GLenum GLAPIENTRY
 _mesa_CheckFramebufferStatus(GLenum target)
 {

src/mesa/main/fbobject.h

@@ -215,6 +215,9 @@ _mesa_GenFramebuffers(GLsizei n, GLuint *framebuffers);
 extern void GLAPIENTRY
 _mesa_CreateFramebuffers(GLsizei n, GLuint *framebuffers);
 
+GLenum GLAPIENTRY
+_mesa_CheckFramebufferStatus_no_error(GLenum target);
+
 extern GLenum GLAPIENTRY
 _mesa_CheckFramebufferStatus(GLenum target);