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-rw-r--r--src/glsl/link_varyings.cpp13
1 files changed, 13 insertions, 0 deletions
diff --git a/src/glsl/link_varyings.cpp b/src/glsl/link_varyings.cpp
index 22617990fdb..d6fb1ea4fc3 100644
--- a/src/glsl/link_varyings.cpp
+++ b/src/glsl/link_varyings.cpp
@@ -263,6 +263,19 @@ cross_validate_outputs_to_inputs(struct gl_shader_program *prog,
if (output != NULL) {
cross_validate_types_and_qualifiers(prog, input, output,
consumer->Stage, producer->Stage);
+ } else {
+ /* Check for input vars with unmatched output vars in prev stage
+ * taking into account that interface blocks could have a matching
+ * output but with different name, so we ignore them.
+ */
+ assert(!input->data.assigned);
+ if (input->data.used && !input->get_interface_type() &&
+ !input->data.explicit_location)
+ linker_error(prog,
+ "%s shader input `%s' "
+ "has no matching output in the previous stage\n",
+ _mesa_shader_stage_to_string(consumer->Stage),
+ input->name);
}
}
}