st/glsl_to_nir: use nir_shader_gather_info()

Use the NIR helper rather than the GLSL IR helper to get in/out
masks. This allows us to ignore varyings removed by NIR
optimisations.

Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

diff --git a/src/mesa/state_tracker/st_glsl_to_nir.cpp b/src/mesa/state_tracker/st_glsl_to_nir.cpp
index d59e47258445bcbbc74796c97cb3884f2ca490c0..7f4651a3ccdc325956efb4deec28fc35b02d6b73 100644 (file)
--- a/src/mesa/state_tracker/st_glsl_to_nir.cpp
+++ b/src/mesa/state_tracker/st_glsl_to_nir.cpp
@@ -273,16 +273,12 @@ st_glsl_to_nir(struct st_context *st, struct gl_program *prog,
     */
    _mesa_associate_uniform_storage(st->ctx, shader_program, prog, true);
 
-   st_set_prog_affected_state_flags(prog);
-
    NIR_PASS_V(nir, nir_lower_io_to_temporaries,
          nir_shader_get_entrypoint(nir),
          true, true);
    NIR_PASS_V(nir, nir_lower_global_vars_to_local);
    NIR_PASS_V(nir, nir_split_var_copies);
    NIR_PASS_V(nir, nir_lower_var_copies);
-   NIR_PASS_V(nir, st_nir_lower_builtin);
-   NIR_PASS_V(nir, nir_lower_atomics, shader_program);
 
    /* fragment shaders may need : */
    if (stage == MESA_SHADER_FRAGMENT) {
@@ -309,6 +305,16 @@ st_glsl_to_nir(struct st_context *st, struct gl_program *prog,
       }
    }
 
+   NIR_PASS_V(nir, nir_lower_system_values);
+
+   nir_shader_gather_info(nir, nir_shader_get_entrypoint(nir));
+   prog->info = nir->info;
+
+   st_set_prog_affected_state_flags(prog);
+
+   NIR_PASS_V(nir, st_nir_lower_builtin);
+   NIR_PASS_V(nir, nir_lower_atomics, shader_program);
+
    if (st->ctx->_Shader->Flags & GLSL_DUMP) {
       _mesa_log("\n");
       _mesa_log("NIR IR for linked %s program %d:\n",
@@ -394,8 +400,6 @@ st_finalize_nir(struct st_context *st, struct gl_program *prog,
    st_nir_assign_uniform_locations(prog, shader_program,
                                    &nir->uniforms, &nir->num_uniforms);
 
-   NIR_PASS_V(nir, nir_lower_system_values);
-
    if (screen->get_param(screen, PIPE_CAP_NIR_SAMPLERS_AS_DEREF))
       NIR_PASS_V(nir, nir_lower_samplers_as_deref, shader_program);
    else
@@ -416,8 +420,6 @@ st_nir_get_mesa_program(struct gl_context *ctx,
 
    prog->Parameters = _mesa_new_parameter_list();
 
-   do_set_program_inouts(shader->ir, prog, shader->Stage);
-
    _mesa_copy_linked_program_data(shader_program, shader);
    _mesa_generate_parameters_list_for_uniforms(ctx, shader_program, shader,
                                                prog->Parameters);