mutter/cogl/cogl-pipeline-cache.c
Damien Lespiau a0d47d5660 build: Hide cogl_pipeline_cache_{new,free}()
Those symbols should not be public and were exported as they started
with cogl_.

(cherry picked from commit 68a55f1dc70ea60fcccbe226029e585886feddc2)
2013-01-22 17:48:16 +00:00

283 lines
8.9 KiB
C

/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2011 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>
* Robert Bragg <robert@linux.intel.com>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "cogl-context-private.h"
#include "cogl-pipeline-private.h"
#include "cogl-pipeline-cache.h"
struct _CoglPipelineCache
{
GHashTable *fragment_hash;
GHashTable *vertex_hash;
GHashTable *combined_hash;
};
static unsigned int
pipeline_fragment_hash (const void *data)
{
unsigned int fragment_state;
unsigned int layer_fragment_state;
_COGL_GET_CONTEXT (ctx, 0);
fragment_state =
_cogl_pipeline_get_state_for_fragment_codegen (ctx);
layer_fragment_state =
_cogl_pipeline_get_layer_state_for_fragment_codegen (ctx);
return _cogl_pipeline_hash ((CoglPipeline *)data,
fragment_state, layer_fragment_state,
0);
}
static CoglBool
pipeline_fragment_equal (const void *a, const void *b)
{
unsigned int fragment_state;
unsigned int layer_fragment_state;
_COGL_GET_CONTEXT (ctx, 0);
fragment_state =
_cogl_pipeline_get_state_for_fragment_codegen (ctx);
layer_fragment_state =
_cogl_pipeline_get_layer_state_for_fragment_codegen (ctx);
return _cogl_pipeline_equal ((CoglPipeline *)a, (CoglPipeline *)b,
fragment_state, layer_fragment_state,
0);
}
static unsigned int
pipeline_vertex_hash (const void *data)
{
unsigned long vertex_state =
COGL_PIPELINE_STATE_AFFECTS_VERTEX_CODEGEN;
unsigned long layer_vertex_state =
COGL_PIPELINE_LAYER_STATE_AFFECTS_VERTEX_CODEGEN;
return _cogl_pipeline_hash ((CoglPipeline *)data,
vertex_state, layer_vertex_state,
0);
}
static CoglBool
pipeline_vertex_equal (const void *a, const void *b)
{
unsigned long vertex_state =
COGL_PIPELINE_STATE_AFFECTS_VERTEX_CODEGEN;
unsigned long layer_vertex_state =
COGL_PIPELINE_LAYER_STATE_AFFECTS_VERTEX_CODEGEN;
return _cogl_pipeline_equal ((CoglPipeline *)a, (CoglPipeline *)b,
vertex_state, layer_vertex_state,
0);
}
static unsigned int
pipeline_combined_hash (const void *data)
{
unsigned int combined_state;
unsigned int layer_combined_state;
_COGL_GET_CONTEXT (ctx, 0);
combined_state =
_cogl_pipeline_get_state_for_fragment_codegen (ctx) |
COGL_PIPELINE_STATE_AFFECTS_VERTEX_CODEGEN;
layer_combined_state =
_cogl_pipeline_get_layer_state_for_fragment_codegen (ctx) |
COGL_PIPELINE_LAYER_STATE_AFFECTS_VERTEX_CODEGEN;
return _cogl_pipeline_hash ((CoglPipeline *)data,
combined_state, layer_combined_state,
0);
}
static CoglBool
pipeline_combined_equal (const void *a, const void *b)
{
unsigned int combined_state;
unsigned int layer_combined_state;
_COGL_GET_CONTEXT (ctx, 0);
combined_state =
_cogl_pipeline_get_state_for_fragment_codegen (ctx) |
COGL_PIPELINE_STATE_AFFECTS_VERTEX_CODEGEN;
layer_combined_state =
_cogl_pipeline_get_layer_state_for_fragment_codegen (ctx) |
COGL_PIPELINE_LAYER_STATE_AFFECTS_VERTEX_CODEGEN;
return _cogl_pipeline_equal ((CoglPipeline *)a, (CoglPipeline *)b,
combined_state, layer_combined_state,
0);
}
CoglPipelineCache *
_cogl_pipeline_cache_new (void)
{
CoglPipelineCache *cache = g_new (CoglPipelineCache, 1);
cache->fragment_hash = g_hash_table_new_full (pipeline_fragment_hash,
pipeline_fragment_equal,
cogl_object_unref,
cogl_object_unref);
cache->vertex_hash = g_hash_table_new_full (pipeline_vertex_hash,
pipeline_vertex_equal,
cogl_object_unref,
cogl_object_unref);
cache->combined_hash = g_hash_table_new_full (pipeline_combined_hash,
pipeline_combined_equal,
cogl_object_unref,
cogl_object_unref);
return cache;
}
void
_cogl_pipeline_cache_free (CoglPipelineCache *cache)
{
g_hash_table_destroy (cache->fragment_hash);
g_hash_table_destroy (cache->vertex_hash);
g_hash_table_destroy (cache->combined_hash);
g_free (cache);
}
CoglPipeline *
_cogl_pipeline_cache_get_fragment_template (CoglPipelineCache *cache,
CoglPipeline *key_pipeline)
{
CoglPipeline *template =
g_hash_table_lookup (cache->fragment_hash, key_pipeline);
if (template == NULL)
{
/* XXX: I wish there was a way to insert into a GHashTable with
* a pre-calculated hash value since there is a cost to
* calculating the hash of a CoglPipeline and in this case we
* know we have already called _cogl_pipeline_hash during the
* lookup so we could pass the value through to here to avoid
* hashing it again.
*/
/* XXX: Any keys referenced by the hash table need to remain
* valid all the while that there are corresponding values,
* so for now we simply make a copy of the current authority
* pipeline.
*
* FIXME: A problem with this is that our key into the cache may
* hold references to some arbitrary user textures which will
* now be kept alive indefinitly which is a shame. A better
* solution will be to derive a special "key pipeline" from the
* authority which derives from the base Cogl pipeline (to avoid
* affecting the lifetime of any other pipelines) and only takes
* a copy of the state that relates to the fragment shader and
* references small dummy textures instead of potentially large
* user textures. */
template = cogl_pipeline_copy (key_pipeline);
g_hash_table_insert (cache->fragment_hash,
template,
cogl_object_ref (template));
if (G_UNLIKELY (g_hash_table_size (cache->fragment_hash) > 50))
{
static CoglBool seen = FALSE;
if (!seen)
g_warning ("Over 50 separate fragment shaders have been "
"generated which is very unusual, so something "
"is probably wrong!\n");
seen = TRUE;
}
}
return template;
}
CoglPipeline *
_cogl_pipeline_cache_get_vertex_template (CoglPipelineCache *cache,
CoglPipeline *key_pipeline)
{
CoglPipeline *template =
g_hash_table_lookup (cache->vertex_hash, key_pipeline);
if (template == NULL)
{
template = cogl_pipeline_copy (key_pipeline);
g_hash_table_insert (cache->vertex_hash,
template,
cogl_object_ref (template));
if (G_UNLIKELY (g_hash_table_size (cache->vertex_hash) > 50))
{
static CoglBool seen = FALSE;
if (!seen)
g_warning ("Over 50 separate vertex shaders have been "
"generated which is very unusual, so something "
"is probably wrong!\n");
seen = TRUE;
}
}
return template;
}
CoglPipeline *
_cogl_pipeline_cache_get_combined_template (CoglPipelineCache *cache,
CoglPipeline *key_pipeline)
{
CoglPipeline *template =
g_hash_table_lookup (cache->combined_hash, key_pipeline);
if (template == NULL)
{
template = cogl_pipeline_copy (key_pipeline);
g_hash_table_insert (cache->combined_hash,
template,
cogl_object_ref (template));
if (G_UNLIKELY (g_hash_table_size (cache->combined_hash) > 50))
{
static CoglBool seen = FALSE;
if (!seen)
g_warning ("Over 50 separate programs have been "
"generated which is very unusual, so something "
"is probably wrong!\n");
seen = TRUE;
}
}
return template;
}