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mutter-performance-source/cogl/cogl-pipeline-snippet.c
Neil Roberts ed510dbe6d Use a GList instead of a BSD list for CoglPipelineSnippetList
Previously CoglPipelineSnippetList was using the BSD embedded list
type with a mini struct to combine the list node with a pointer to the
snippet. This is effectively equivalent to just using a GList so we
might as well do that. This will help if we eventually want to get rid
of cogl-queue.h

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit 54a168f3c7829c427d54ab517533bb9f7384d022)
2013-06-13 13:45:46 +01:00

280 lines
8.4 KiB
C

/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2011, 2013 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
*
*
* Authors:
* Neil Roberts <neil@linux.intel.com>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include "cogl-types.h"
#include "cogl-pipeline-snippet-private.h"
#include "cogl-snippet-private.h"
#include "cogl-util.h"
/* Helper functions that are used by both GLSL pipeline backends */
void
_cogl_pipeline_snippet_generate_code (const CoglPipelineSnippetData *data)
{
GList *first_snippet, *l;
CoglSnippet *snippet;
int snippet_num = 0;
int n_snippets = 0;
first_snippet = data->snippets->entries;
/* First count the number of snippets so we can easily tell when
we're at the last one */
for (l = data->snippets->entries; l; l = l->next)
{
snippet = l->data;
if (snippet->hook == data->hook)
{
/* Don't bother processing any previous snippets if we reach
one that has a replacement */
if (snippet->replace)
{
n_snippets = 1;
first_snippet = l;
}
else
n_snippets++;
}
}
/* If there weren't any snippets then generate a stub function with
the final name */
if (n_snippets == 0)
{
if (data->return_type)
g_string_append_printf (data->source_buf,
"\n"
"%s\n"
"%s (%s)\n"
"{\n"
" return %s (%s);\n"
"}\n",
data->return_type,
data->final_name,
data->argument_declarations ?
data->argument_declarations : "",
data->chain_function,
data->arguments ? data->arguments : "");
else
g_string_append_printf (data->source_buf,
"\n"
"void\n"
"%s (%s)\n"
"{\n"
" %s (%s);\n"
"}\n",
data->final_name,
data->argument_declarations ?
data->argument_declarations : "",
data->chain_function,
data->arguments ? data->arguments : "");
return;
}
for (l = first_snippet; snippet_num < n_snippets; l = l->next)
{
snippet = l->data;
if (snippet->hook == data->hook)
{
const char *source;
if ((source = cogl_snippet_get_declarations (snippet)))
g_string_append (data->source_buf, source);
g_string_append_printf (data->source_buf,
"\n"
"%s\n",
data->return_type ?
data->return_type :
"void");
if (snippet_num + 1 < n_snippets)
g_string_append_printf (data->source_buf,
"%s_%i",
data->function_prefix,
snippet_num);
else
g_string_append (data->source_buf, data->final_name);
g_string_append (data->source_buf, " (");
if (data->argument_declarations)
g_string_append (data->source_buf, data->argument_declarations);
g_string_append (data->source_buf,
")\n"
"{\n");
if (data->return_type && !data->return_variable_is_argument)
g_string_append_printf (data->source_buf,
" %s %s;\n"
"\n",
data->return_type,
data->return_variable);
if ((source = cogl_snippet_get_pre (snippet)))
g_string_append (data->source_buf, source);
/* Chain on to the next function, or bypass it if there is
a replace string */
if ((source = cogl_snippet_get_replace (snippet)))
g_string_append (data->source_buf, source);
else
{
g_string_append (data->source_buf, " ");
if (data->return_type)
g_string_append_printf (data->source_buf,
"%s = ",
data->return_variable);
if (snippet_num > 0)
g_string_append_printf (data->source_buf,
"%s_%i",
data->function_prefix,
snippet_num - 1);
else
g_string_append (data->source_buf, data->chain_function);
g_string_append (data->source_buf, " (");
if (data->arguments)
g_string_append (data->source_buf, data->arguments);
g_string_append (data->source_buf, ");\n");
}
if ((source = cogl_snippet_get_post (snippet)))
g_string_append (data->source_buf, source);
if (data->return_type)
g_string_append_printf (data->source_buf,
" return %s;\n",
data->return_variable);
g_string_append (data->source_buf, "}\n");
snippet_num++;
}
}
}
void
_cogl_pipeline_snippet_generate_declarations (GString *declarations_buf,
CoglSnippetHook hook,
CoglPipelineSnippetList *snippets)
{
GList *l;
for (l = snippets->entries; l; l = l->next)
{
CoglSnippet *snippet = l->data;
if (snippet->hook == hook)
{
const char *source;
if ((source = cogl_snippet_get_declarations (snippet)))
g_string_append (declarations_buf, source);
}
}
}
void
_cogl_pipeline_snippet_list_free (CoglPipelineSnippetList *list)
{
GList *l, *tmp;
for (l = list->entries; l; l = tmp)
{
tmp = l->next;
cogl_object_unref (l->data);
g_list_free_1 (l);
}
}
void
_cogl_pipeline_snippet_list_add (CoglPipelineSnippetList *list,
CoglSnippet *snippet)
{
list->entries = g_list_append (list->entries, cogl_object_ref (snippet));
_cogl_snippet_make_immutable (snippet);
}
void
_cogl_pipeline_snippet_list_copy (CoglPipelineSnippetList *dst,
const CoglPipelineSnippetList *src)
{
GQueue queue = G_QUEUE_INIT;
const GList *l;
for (l = src->entries; l; l = l->next)
g_queue_push_tail (&queue, cogl_object_ref (l->data));
dst->entries = queue.head;
}
void
_cogl_pipeline_snippet_list_hash (CoglPipelineSnippetList *list,
unsigned int *hash)
{
GList *l;
for (l = list->entries; l; l = l->next)
{
CoglSnippet *snippet = l->data;
*hash = _cogl_util_one_at_a_time_hash (*hash,
&snippet,
sizeof (CoglSnippet *));
}
}
CoglBool
_cogl_pipeline_snippet_list_equal (CoglPipelineSnippetList *list0,
CoglPipelineSnippetList *list1)
{
GList *l0, *l1;
for (l0 = list0->entries, l1 = list1->entries;
l0 && l1;
l0 = l0->next, l1 = l1->next)
if (l0->data != l1->data)
return FALSE;
return l0 == NULL && l1 == NULL;
}