glsl: Move link_get_main_function_signature to a common location
Also rename to _mesa_get_main_function_signature.
We will call it near the end of compilation to insert some code into
main for initializing some compute shader global variables.
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Eduardo Lima Mitev <elima@igalia.com>
diff --git a/src/glsl/linker.cpp b/src/glsl/linker.cpp
index 94f847e..fd69dbc 100644
--- a/src/glsl/linker.cpp
+++ b/src/glsl/linker.cpp
@@ -1341,33 +1341,6 @@
return last;
}
-/**
- * Get the function signature for main from a shader
- */
-ir_function_signature *
-link_get_main_function_signature(gl_shader *sh)
-{
- ir_function *const f = sh->symbols->get_function("main");
- if (f != NULL) {
- exec_list void_parameters;
-
- /* Look for the 'void main()' signature and ensure that it's defined.
- * This keeps the linker from accidentally pick a shader that just
- * contains a prototype for main.
- *
- * We don't have to check for multiple definitions of main (in multiple
- * shaders) because that would have already been caught above.
- */
- ir_function_signature *sig =
- f->matching_signature(NULL, &void_parameters, false);
- if ((sig != NULL) && sig->is_defined) {
- return sig;
- }
- }
-
- return NULL;
-}
-
/**
* This class is only used in link_intrastage_shaders() below but declaring
@@ -2040,7 +2013,7 @@
*/
gl_shader *main = NULL;
for (unsigned i = 0; i < num_shaders; i++) {
- if (link_get_main_function_signature(shader_list[i]) != NULL) {
+ if (_mesa_get_main_function_signature(shader_list[i]) != NULL) {
main = shader_list[i];
break;
}
@@ -2072,7 +2045,7 @@
* copy of the original shader that contained the main function).
*/
ir_function_signature *const main_sig =
- link_get_main_function_signature(linked);
+ _mesa_get_main_function_signature(linked);
/* Move any instructions other than variable declarations or function
* declarations into main.