mesa: invalidate framebuffer when changing parameters

This fixes dEQP-GLES31.functional.fbo.completeness.no_attachments

When the width or height are 0, the framebuffer is incomplete. We may
also not have been passing the new state down to the driver when the
widths/heights/etc changed. Make sure to dirty the state so that the
framebuffer state is revalidated at draw time.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Brian Paul <brianp@vmware.com>

src/mesa/main/fbobject.c

@@ -1414,6 +1414,9 @@ framebuffer_parameteri(struct gl_context *ctx, struct gl_framebuffer *fb,
       _mesa_error(ctx, GL_INVALID_ENUM,
                   "%s(pname=0x%x)", func, pname);
    }
+
+   invalidate_framebuffer(fb);
+   ctx->NewState |= _NEW_BUFFERS;
 }
 
 void GLAPIENTRY