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material: Adds simple breadcrumb debugging mechanism

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Since it can sometimes be awkward to figure out where a particular
material came from when debugging, this adds a breadcrumb mechanism that
lets you associate a const string with a material that may give a clue
about its origin.
This commit is contained in:
Robert Bragg 2010-05-19 00:36:31 +01:00
parent ad0aab939d
commit 487c0b1ae9
2 changed files with 36 additions and 1 deletions
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14
clutter/cogl/cogl/cogl-material-private.h
View File

@ -477,6 +477,11 @@ struct _CoglMaterial
* be allocated dynamically when required... */
CoglMaterialBigState *big_state;
/* For debugging purposes it's possible to associate a static const
* string with a material which can be an aid when trying to trace
* where the material originates from */
const char *static_breadcrumb;
/* Cached state... */
/* A cached, complete list of the layers this material depends
@ -519,6 +524,11 @@ struct _CoglMaterial
unsigned int layers_cache_dirty:1;
unsigned int deprecated_get_layers_list_dirty:1;
/* For debugging purposes it's possible to associate a static const
* string with a material which can be an aid when trying to trace
* where the material originates from */
unsigned int has_static_breadcrumb:1;
/* There are multiple fragment processing backends for CoglMaterial,
* glsl, arbfp and fixed. This identifies the backend being used for
* the material and any private state the backend has associated
@ -734,5 +744,9 @@ void
_cogl_material_set_blend_enabled (CoglHandle handle,
CoglMaterialBlendEnable enable);
void
_cogl_material_set_static_breadcrumb (CoglHandle handle,
const char *breadcrumb);
#endif /* __COGL_MATERIAL_PRIVATE_H */

23
clutter/cogl/cogl/cogl-material.c
View File

@ -364,6 +364,9 @@ _cogl_material_init_default_material (void)
material->big_state = big_state;
material->has_big_state = TRUE;
material->static_breadcrumb = "default material";
material->has_static_breadcrumb = TRUE;
/* Use the same defaults as the GL spec... */
cogl_color_init_from_4ub (&material->color, 0xff, 0xff, 0xff, 0xff);
@ -456,15 +459,21 @@ cogl_material_copy (CoglHandle handle)
material->backend = src->backend;
material->backend_priv_set = FALSE;
material->has_static_breadcrumb = FALSE;
return _cogl_material_handle_new (material);
}
CoglHandle
cogl_material_new (void)
{
CoglHandle new;
_COGL_GET_CONTEXT (ctx, COGL_INVALID_HANDLE);
return cogl_material_copy (ctx->default_material);
new = cogl_material_copy (ctx->default_material);
_cogl_material_set_static_breadcrumb (new, "new");
return new;
}
static void
@ -1109,6 +1118,8 @@ _cogl_material_pre_change_notify (CoglMaterial *material,
COGL_COUNTER_INC (_cogl_uprof_context, material_copy_on_write_counter);
new_authority = cogl_material_copy (material->parent);
_cogl_material_set_static_breadcrumb (new_authority,
"pre_change_notify:copy-on-write");
/* We could explicitly walk the descendants, OR together the set
* of differences that we determine this material is the
@ -6569,3 +6580,13 @@ _cogl_material_apply_legacy_state (CoglHandle handle)
}
}
void
_cogl_material_set_static_breadcrumb (CoglHandle handle,
const char *breadcrumb)
{
CoglMaterial *material = COGL_MATERIAL (handle);
material->has_static_breadcrumb = TRUE;
material->static_breadcrumb = breadcrumb;
}