54735dec84
The coding style has for a long time said to avoid using redundant glib
data types such as gint or gchar etc because we feel that they make the
code look unnecessarily foreign to developers coming from outside of the
Gnome developer community.
Note: When we tried to find the historical rationale for the types we
just found that they were apparently only added for consistent syntax
highlighting which didn't seem that compelling.
Up until now we have been continuing to use some of the platform
specific type such as gint{8,16,32,64} and gsize but this patch switches
us over to using the standard c99 equivalents instead so we can further
ensure that our code looks familiar to the widest range of C developers
who might potentially contribute to Cogl.
So instead of using the gint{8,16,32,64} and guint{8,16,32,64} types this
switches all Cogl code to instead use the int{8,16,32,64}_t and
uint{8,16,32,64}_t c99 types instead.
Instead of gsize we now use size_t
For now we are not going to use the c99 _Bool type and instead we have
introduced a new CoglBool type to use instead of gboolean.
Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit 5967dad2400d32ca6319cef6cb572e81bf2c15f0)
361 lines
12 KiB
C
361 lines
12 KiB
C
/*
|
|
* Cogl
|
|
*
|
|
* An object oriented GL/GLES Abstraction/Utility Layer
|
|
*
|
|
* Copyright (C) 2012 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 "cogl-sampler-cache-private.h"
|
|
#include "cogl-context-private.h"
|
|
|
|
struct _CoglSamplerCache
|
|
{
|
|
CoglContext *context;
|
|
|
|
/* The samplers are hashed in two tables. One is using the enum
|
|
values that Cogl exposes (so it can include the 'automatic' wrap
|
|
mode) and the other is using the converted values that will be
|
|
given to GL. The first is used to get a unique pointer for the
|
|
sampler state so that pipelines only need to store a single
|
|
pointer instead of the whole state and the second is used so that
|
|
only a single GL sampler object will be created for each unique
|
|
GL state. */
|
|
GHashTable *hash_table_cogl;
|
|
GHashTable *hash_table_gl;
|
|
|
|
/* This is used for generated fake unique sampler object numbers
|
|
when the sampler object extension is not supported */
|
|
GLuint next_fake_sampler_object_number;
|
|
};
|
|
|
|
static CoglSamplerCacheWrapMode
|
|
get_real_wrap_mode (CoglSamplerCacheWrapMode wrap_mode)
|
|
{
|
|
if (wrap_mode == COGL_SAMPLER_CACHE_WRAP_MODE_AUTOMATIC)
|
|
return COGL_SAMPLER_CACHE_WRAP_MODE_CLAMP_TO_EDGE;
|
|
|
|
return wrap_mode;
|
|
}
|
|
|
|
static void
|
|
canonicalize_key (CoglSamplerCacheEntry *key)
|
|
{
|
|
/* This converts the wrap modes to the enums that will actually be
|
|
given to GL so that it can be used as a key to get a unique GL
|
|
sampler object for the state */
|
|
key->wrap_mode_s = get_real_wrap_mode (key->wrap_mode_s);
|
|
key->wrap_mode_t = get_real_wrap_mode (key->wrap_mode_t);
|
|
key->wrap_mode_p = get_real_wrap_mode (key->wrap_mode_p);
|
|
}
|
|
|
|
static CoglBool
|
|
wrap_mode_equal_gl (CoglSamplerCacheWrapMode wrap_mode0,
|
|
CoglSamplerCacheWrapMode wrap_mode1)
|
|
{
|
|
/* We want to compare the actual GLenum that will be used so that if
|
|
two different wrap_modes actually use the same GL state we'll
|
|
still use the same sampler object */
|
|
return get_real_wrap_mode (wrap_mode0) == get_real_wrap_mode (wrap_mode1);
|
|
}
|
|
|
|
static CoglBool
|
|
sampler_state_equal_gl (const void *value0,
|
|
const void *value1)
|
|
{
|
|
const CoglSamplerCacheEntry *state0 = value0;
|
|
const CoglSamplerCacheEntry *state1 = value1;
|
|
|
|
return (state0->mag_filter == state1->mag_filter &&
|
|
state0->min_filter == state1->min_filter &&
|
|
wrap_mode_equal_gl (state0->wrap_mode_s, state1->wrap_mode_s) &&
|
|
wrap_mode_equal_gl (state0->wrap_mode_t, state1->wrap_mode_t) &&
|
|
wrap_mode_equal_gl (state0->wrap_mode_p, state1->wrap_mode_p));
|
|
}
|
|
|
|
static unsigned int
|
|
hash_wrap_mode_gl (unsigned int hash,
|
|
CoglSamplerCacheWrapMode wrap_mode)
|
|
{
|
|
/* We want to hash the actual GLenum that will be used so that if
|
|
two different wrap_modes actually use the same GL state we'll
|
|
still use the same sampler object */
|
|
GLenum real_wrap_mode = get_real_wrap_mode (wrap_mode);
|
|
|
|
return _cogl_util_one_at_a_time_hash (hash,
|
|
&real_wrap_mode,
|
|
sizeof (real_wrap_mode));
|
|
}
|
|
|
|
static unsigned int
|
|
hash_sampler_state_gl (const void *key)
|
|
{
|
|
const CoglSamplerCacheEntry *entry = key;
|
|
unsigned int hash = 0;
|
|
|
|
hash = _cogl_util_one_at_a_time_hash (hash, &entry->mag_filter,
|
|
sizeof (entry->mag_filter));
|
|
hash = _cogl_util_one_at_a_time_hash (hash, &entry->min_filter,
|
|
sizeof (entry->min_filter));
|
|
hash = hash_wrap_mode_gl (hash, entry->wrap_mode_s);
|
|
hash = hash_wrap_mode_gl (hash, entry->wrap_mode_t);
|
|
hash = hash_wrap_mode_gl (hash, entry->wrap_mode_p);
|
|
|
|
return _cogl_util_one_at_a_time_mix (hash);
|
|
}
|
|
|
|
static CoglBool
|
|
sampler_state_equal_cogl (const void *value0,
|
|
const void *value1)
|
|
{
|
|
const CoglSamplerCacheEntry *state0 = value0;
|
|
const CoglSamplerCacheEntry *state1 = value1;
|
|
|
|
return (state0->mag_filter == state1->mag_filter &&
|
|
state0->min_filter == state1->min_filter &&
|
|
state0->wrap_mode_s == state1->wrap_mode_s &&
|
|
state0->wrap_mode_t == state1->wrap_mode_t &&
|
|
state0->wrap_mode_p == state1->wrap_mode_p);
|
|
}
|
|
|
|
static unsigned int
|
|
hash_sampler_state_cogl (const void *key)
|
|
{
|
|
const CoglSamplerCacheEntry *entry = key;
|
|
unsigned int hash = 0;
|
|
|
|
hash = _cogl_util_one_at_a_time_hash (hash, &entry->mag_filter,
|
|
sizeof (entry->mag_filter));
|
|
hash = _cogl_util_one_at_a_time_hash (hash, &entry->min_filter,
|
|
sizeof (entry->min_filter));
|
|
hash = _cogl_util_one_at_a_time_hash (hash, &entry->wrap_mode_s,
|
|
sizeof (entry->wrap_mode_s));
|
|
hash = _cogl_util_one_at_a_time_hash (hash, &entry->wrap_mode_t,
|
|
sizeof (entry->wrap_mode_t));
|
|
hash = _cogl_util_one_at_a_time_hash (hash, &entry->wrap_mode_p,
|
|
sizeof (entry->wrap_mode_p));
|
|
|
|
return _cogl_util_one_at_a_time_mix (hash);
|
|
}
|
|
|
|
CoglSamplerCache *
|
|
_cogl_sampler_cache_new (CoglContext *context)
|
|
{
|
|
CoglSamplerCache *cache = g_new (CoglSamplerCache, 1);
|
|
|
|
/* No reference is taken on the context because it would create a
|
|
circular reference */
|
|
cache->context = context;
|
|
|
|
cache->hash_table_gl = g_hash_table_new (hash_sampler_state_gl,
|
|
sampler_state_equal_gl);
|
|
cache->hash_table_cogl = g_hash_table_new (hash_sampler_state_cogl,
|
|
sampler_state_equal_cogl);
|
|
cache->next_fake_sampler_object_number = 1;
|
|
|
|
return cache;
|
|
}
|
|
|
|
static void
|
|
set_wrap_mode (CoglContext *context,
|
|
GLuint sampler_object,
|
|
GLenum param,
|
|
CoglSamplerCacheWrapMode wrap_mode)
|
|
{
|
|
GE( context, glSamplerParameteri (sampler_object,
|
|
param,
|
|
wrap_mode) );
|
|
}
|
|
|
|
static CoglSamplerCacheEntry *
|
|
_cogl_sampler_cache_get_entry_gl (CoglSamplerCache *cache,
|
|
const CoglSamplerCacheEntry *key)
|
|
{
|
|
CoglSamplerCacheEntry *entry;
|
|
|
|
entry = g_hash_table_lookup (cache->hash_table_gl, key);
|
|
|
|
if (entry == NULL)
|
|
{
|
|
CoglContext *context = cache->context;
|
|
|
|
entry = g_slice_dup (CoglSamplerCacheEntry, key);
|
|
|
|
if ((context->private_feature_flags &
|
|
COGL_PRIVATE_FEATURE_SAMPLER_OBJECTS))
|
|
{
|
|
GE( context, glGenSamplers (1, &entry->sampler_object) );
|
|
|
|
GE( context, glSamplerParameteri (entry->sampler_object,
|
|
GL_TEXTURE_MIN_FILTER,
|
|
entry->min_filter) );
|
|
GE( context, glSamplerParameteri (entry->sampler_object,
|
|
GL_TEXTURE_MAG_FILTER,
|
|
entry->mag_filter) );
|
|
|
|
set_wrap_mode (context,
|
|
entry->sampler_object,
|
|
GL_TEXTURE_WRAP_S,
|
|
entry->wrap_mode_s);
|
|
set_wrap_mode (context,
|
|
entry->sampler_object,
|
|
GL_TEXTURE_WRAP_T,
|
|
entry->wrap_mode_t);
|
|
set_wrap_mode (context,
|
|
entry->sampler_object,
|
|
GL_TEXTURE_WRAP_R,
|
|
entry->wrap_mode_p);
|
|
}
|
|
else
|
|
{
|
|
/* If sampler objects aren't supported then we'll invent a
|
|
unique number so that pipelines can still compare the
|
|
unique state just by comparing the sampler object
|
|
numbers */
|
|
entry->sampler_object = cache->next_fake_sampler_object_number++;
|
|
}
|
|
|
|
g_hash_table_insert (cache->hash_table_gl, entry, entry);
|
|
}
|
|
|
|
return entry;
|
|
}
|
|
|
|
static CoglSamplerCacheEntry *
|
|
_cogl_sampler_cache_get_entry_cogl (CoglSamplerCache *cache,
|
|
const CoglSamplerCacheEntry *key)
|
|
{
|
|
CoglSamplerCacheEntry *entry;
|
|
|
|
entry = g_hash_table_lookup (cache->hash_table_cogl, key);
|
|
|
|
if (entry == NULL)
|
|
{
|
|
CoglSamplerCacheEntry canonical_key;
|
|
CoglSamplerCacheEntry *gl_entry;
|
|
|
|
entry = g_slice_dup (CoglSamplerCacheEntry, key);
|
|
|
|
/* Get the sampler object number from the canonical GL version
|
|
of the sampler state cache */
|
|
canonical_key = *key;
|
|
canonicalize_key (&canonical_key);
|
|
gl_entry = _cogl_sampler_cache_get_entry_gl (cache, &canonical_key);
|
|
entry->sampler_object = gl_entry->sampler_object;
|
|
|
|
g_hash_table_insert (cache->hash_table_cogl, entry, entry);
|
|
}
|
|
|
|
return entry;
|
|
}
|
|
|
|
const CoglSamplerCacheEntry *
|
|
_cogl_sampler_cache_get_default_entry (CoglSamplerCache *cache)
|
|
{
|
|
CoglSamplerCacheEntry key;
|
|
|
|
key.wrap_mode_s = COGL_SAMPLER_CACHE_WRAP_MODE_AUTOMATIC;
|
|
key.wrap_mode_t = COGL_SAMPLER_CACHE_WRAP_MODE_AUTOMATIC;
|
|
key.wrap_mode_p = COGL_SAMPLER_CACHE_WRAP_MODE_AUTOMATIC;
|
|
|
|
key.min_filter = GL_LINEAR;
|
|
key.mag_filter = GL_LINEAR;
|
|
|
|
return _cogl_sampler_cache_get_entry_cogl (cache, &key);
|
|
}
|
|
|
|
const CoglSamplerCacheEntry *
|
|
_cogl_sampler_cache_update_wrap_modes (CoglSamplerCache *cache,
|
|
const CoglSamplerCacheEntry *old_entry,
|
|
CoglSamplerCacheWrapMode wrap_mode_s,
|
|
CoglSamplerCacheWrapMode wrap_mode_t,
|
|
CoglSamplerCacheWrapMode wrap_mode_p)
|
|
{
|
|
CoglSamplerCacheEntry key = *old_entry;
|
|
|
|
key.wrap_mode_s = wrap_mode_s;
|
|
key.wrap_mode_t = wrap_mode_t;
|
|
key.wrap_mode_p = wrap_mode_p;
|
|
|
|
return _cogl_sampler_cache_get_entry_cogl (cache, &key);
|
|
}
|
|
|
|
const CoglSamplerCacheEntry *
|
|
_cogl_sampler_cache_update_filters (CoglSamplerCache *cache,
|
|
const CoglSamplerCacheEntry *old_entry,
|
|
GLenum min_filter,
|
|
GLenum mag_filter)
|
|
{
|
|
CoglSamplerCacheEntry key = *old_entry;
|
|
|
|
key.min_filter = min_filter;
|
|
key.mag_filter = mag_filter;
|
|
|
|
return _cogl_sampler_cache_get_entry_cogl (cache, &key);
|
|
}
|
|
|
|
static void
|
|
hash_table_free_gl_cb (void *key,
|
|
void *value,
|
|
void *user_data)
|
|
{
|
|
CoglContext *context = user_data;
|
|
CoglSamplerCacheEntry *entry = value;
|
|
|
|
if ((context->private_feature_flags &
|
|
COGL_PRIVATE_FEATURE_SAMPLER_OBJECTS))
|
|
GE( context, glDeleteSamplers (1, &entry->sampler_object) );
|
|
|
|
g_slice_free (CoglSamplerCacheEntry, entry);
|
|
}
|
|
|
|
static void
|
|
hash_table_free_cogl_cb (void *key,
|
|
void *value,
|
|
void *user_data)
|
|
{
|
|
CoglSamplerCacheEntry *entry = value;
|
|
|
|
g_slice_free (CoglSamplerCacheEntry, entry);
|
|
}
|
|
|
|
void
|
|
_cogl_sampler_cache_free (CoglSamplerCache *cache)
|
|
{
|
|
g_hash_table_foreach (cache->hash_table_gl,
|
|
hash_table_free_gl_cb,
|
|
cache->context);
|
|
|
|
g_hash_table_destroy (cache->hash_table_gl);
|
|
|
|
g_hash_table_foreach (cache->hash_table_cogl,
|
|
hash_table_free_cogl_cb,
|
|
cache->context);
|
|
|
|
g_hash_table_destroy (cache->hash_table_cogl);
|
|
|
|
g_free (cache);
|
|
}
|