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cogl-material: Adds debug api to dump sparse material graph

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This adds a _cogl_debug_dump_materials_dot_file function that can be
used to dump all the descendants of the default material to a file using
the dot format which can then be converted to an image to visualize.
This commit is contained in:
Robert Bragg 2010-07-02 18:04:45 +01:00
parent b5f7ab345c
commit 12a76ca4aa
1 changed files with 165 additions and 0 deletions
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165
cogl/cogl-material.c
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@ -5905,3 +5905,168 @@ _cogl_material_set_static_breadcrumb (CoglMaterial *material,
material->static_breadcrumb = breadcrumb; material->static_breadcrumb = breadcrumb;
} }
typedef struct
{
int parent_id;
int *material_id_ptr;
GString *graph;
int indent;
} PrintDebugState;
static gboolean
dump_layer_cb (CoglMaterialLayer *layer, void *data)
{
PrintDebugState *state = data;
int material_id = *state->material_id_ptr;
g_string_append_printf (state->graph,
"%*sstate%d -> layer_ref%d [weight=200];\n",
state->indent, "",
material_id,
material_id);
g_string_append_printf (state->graph,
"%*slayer_ref%d [label=\"addr=0x%p\" "
"shape=box color=blue];\n",
state->indent, "",
material_id,
layer);
return TRUE;
}
static gboolean
dump_material_cb (CoglMaterial *material, void *user_data)
{
PrintDebugState *state = user_data;
int material_id = *state->material_id_ptr;
PrintDebugState state_out;
GString *changes_label;
gboolean changes = FALSE;
gboolean layers = FALSE;
if (state->parent_id >= 0)
g_string_append_printf (state->graph, "%*smaterial%d -> material%d;\n",
state->indent, "",
state->parent_id,
material_id);
g_string_append_printf (state->graph,
"%*smaterial%d [label=\"addr=0x%p\\n"
"ref count=%d\\n"
"breadcrumb=\\\"%s\\\"\" color=\"red\"];\n",
state->indent, "",
material_id,
material,
COGL_OBJECT (material)->ref_count,
material->has_static_breadcrumb ?
material->static_breadcrumb : "NULL");
changes_label = g_string_new ("");
g_string_append_printf (changes_label,
"%*smaterial%d -> state%d [weight=100];\n"
"%*sstate%d [shape=box label=\"",
state->indent, "",
material_id,
material_id,
state->indent, "",
material_id);
if (material->differences & COGL_MATERIAL_STATE_COLOR)
{
changes = TRUE;
g_string_append_printf (changes_label,
"\\lcolor=0x%02X%02X%02X%02X\\n",
cogl_color_get_red_byte (&material->color),
cogl_color_get_green_byte (&material->color),
cogl_color_get_blue_byte (&material->color),
cogl_color_get_alpha_byte (&material->color));
}
if (material->differences & COGL_MATERIAL_STATE_BLEND)
{
changes = TRUE;
const char *blend_enable_name;
switch (material->blend_enable)
{
case COGL_MATERIAL_BLEND_ENABLE_AUTOMATIC:
blend_enable_name = "AUTO";
break;
case COGL_MATERIAL_BLEND_ENABLE_ENABLED:
blend_enable_name = "ENABLED";
break;
case COGL_MATERIAL_BLEND_ENABLE_DISABLED:
blend_enable_name = "DISABLED";
break;
default:
blend_enable_name = "UNKNOWN";
}
g_string_append_printf (changes_label,
"\\lblend=%s\\n",
blend_enable_name);
}
if (material->differences & COGL_MATERIAL_STATE_LAYERS)
{
changes = TRUE;
layers = TRUE;
g_string_append_printf (changes_label, "\\ln_layers=%d\\n",
material->n_layers);
}
if (changes)
{
g_string_append_printf (changes_label, "\"];\n");
g_string_append (state->graph, changes_label->str);
g_string_free (changes_label, TRUE);
}
if (layers)
_cogl_material_foreach_layer (material, dump_layer_cb, state);
state_out.parent_id = material_id;
state_out.material_id_ptr = state->material_id_ptr;
(*state_out.material_id_ptr)++;
state_out.graph = state->graph;
state_out.indent = state->indent + 2;
_cogl_material_foreach_child (material,
dump_material_cb,
&state_out);
return TRUE;
}
void
_cogl_debug_dump_materials_dot_file (const char *filename)
{
PrintDebugState state;
int material_id = 0;
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
if (!ctx->default_material)
return;
state.graph = g_string_new ("");
g_string_append_printf (state.graph, "digraph {\n");
state.parent_id = -1;
state.material_id_ptr = &material_id;
state.indent = 0;
dump_material_cb (ctx->default_material, &state);
g_string_append_printf (state.graph, "}\n");
if (filename)
g_file_set_contents (filename, state.graph->str, -1, NULL);
else
g_print ("%s", state.graph->str);
g_string_free (state.graph, TRUE);
}