Set the attribute as used.

diff --git a/src/mesa/shader/slang/slang_link.c b/src/mesa/shader/slang/slang_link.c
index 80cd4b6df624f15b297cef85ed4ea3886de4eeee..dd4990ba023605be51100f21c4feffcab2396237 100644 (file)
--- a/src/mesa/shader/slang/slang_link.c
+++ b/src/mesa/shader/slang/slang_link.c
@@ -262,6 +262,9 @@ _slang_resolve_attributes(struct gl_shader_program *shProg,
                   return GL_FALSE;
                }
                _mesa_add_attribute(shProg->Attributes, name, size, attr);
+
+              /* set the attribute as used */
+              usedAttributes |= 1<<attr;
             }
 
             inst->SrcReg[j].Index = VERT_ATTRIB_GENERIC0 + attr;