[Mesa-dev] [PATCH 1/3] st/mesa: improve shader cache debug info

[Timothy Arceri]

This will explicitly state that we are following the fallback
path when we find invalid/corrupt cache items. It will also
output the fallback message when the fallback path is forced
via an environment variable, the following patches will allow
this.
---
 src/mesa/state_tracker/st_shader_cache.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/mesa/state_tracker/st_shader_cache.c b/src/mesa/state_tracker/st_shader_cache.c
index 23416c0..175d69d 100644
--- a/src/mesa/state_tracker/st_shader_cache.c
+++ b/src/mesa/state_tracker/st_shader_cache.c
@@ -361,32 +361,34 @@ st_load_tgsi_from_disk_cache(struct gl_context *ctx,
 
          st_set_prog_affected_state_flags(glprog);
          _mesa_associate_uniform_storage(ctx, prog, glprog->Parameters,
                                          false);
 
          free(buffer);
       } else {
          /* Failed to find a matching cached shader so fallback to recompile.
           */
          if (ctx->_Shader->Flags & GLSL_CACHE_INFO) {
-            fprintf(stderr, "TGSI cache item not found falling back to "
-                    "compile.\n");
+            fprintf(stderr, "TGSI cache item not found.\n");
          }
 
          goto fallback_recompile;
       }
    }
 
    return true;
 
 fallback_recompile:
    free(buffer);
 
+   if (ctx->_Shader->Flags & GLSL_CACHE_INFO)
+      fprintf(stderr, "TGSI cache falling back to recompile.\n");
+
    for (unsigned i = 0; i < prog->NumShaders; i++) {
       _mesa_glsl_compile_shader(ctx, prog->Shaders[i], false, false, true);
    }
 
    prog->data->cache_fallback = true;
    _mesa_glsl_link_shader(ctx, prog);
 
    return true;
 }
-- 
2.9.4