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pipeline-cache: Use a shared hash table wrapper The pipeline cache contains three separate hash tables, one for the state affecting the vertex shaders, one for the fragment shaders and one for the resulting combined program. Previously these hash tables had a fair bit of duplicated code to calculate the hashes, check for equality and copy the pipeline when it is added. This patch moves the common bits of code to a new type called CoglPipelineHashTable which just wraps a GHashTable with a given set of state flags to use for hashing and checking for equality. Reviewed-by: Robert Bragg <robert@linux.intel.com> (cherry picked from commit 402796430c839038339e531363b8c2463f9b2a9e) Conflicts: cogl/Makefile.am
2013-03-25 16:54:51 +00:00
/*
* Cogl
*
This re-licenses Cogl 1.18 under the MIT license Since the Cogl 1.18 branch is actively maintained in parallel with the master branch; this is a counter part to commit 1b83ef938fc16b which re-licensed the master branch to use the MIT license. This re-licensing is a follow up to the proposal that was sent to the Cogl mailing list: http://lists.freedesktop.org/archives/cogl/2013-December/001465.html Note: there was a copyright assignment policy in place for Clutter (and therefore Cogl which was part of Clutter at the time) until the 11th of June 2010 and so we only checked the details after that point (commit 0bbf50f905) For each file, authors were identified via this Git command: $ git blame -p -C -C -C20 -M -M10 0bbf50f905..HEAD We received blanket approvals for re-licensing all Red Hat and Collabora contributions which reduced how many people needed to be contacted individually: - http://lists.freedesktop.org/archives/cogl/2013-December/001470.html - http://lists.freedesktop.org/archives/cogl/2014-January/001536.html Individual approval requests were sent to all the other identified authors who all confirmed the re-license on the Cogl mailinglist: http://lists.freedesktop.org/archives/cogl/2014-January As well as updating the copyright header in all sources files, the COPYING file has been updated to reflect the license change and also document the other licenses used in Cogl such as the SGI Free Software License B, version 2.0 and the 3-clause BSD license. This patch was not simply cherry-picked from master; but the same methodology was used to check the source files.
2014-02-22 01:28:54 +00:00
* A Low Level GPU Graphics and Utilities API
pipeline-cache: Use a shared hash table wrapper The pipeline cache contains three separate hash tables, one for the state affecting the vertex shaders, one for the fragment shaders and one for the resulting combined program. Previously these hash tables had a fair bit of duplicated code to calculate the hashes, check for equality and copy the pipeline when it is added. This patch moves the common bits of code to a new type called CoglPipelineHashTable which just wraps a GHashTable with a given set of state flags to use for hashing and checking for equality. Reviewed-by: Robert Bragg <robert@linux.intel.com> (cherry picked from commit 402796430c839038339e531363b8c2463f9b2a9e) Conflicts: cogl/Makefile.am
2013-03-25 16:54:51 +00:00
*
* Copyright (C) 2013 Intel Corporation.
*
This re-licenses Cogl 1.18 under the MIT license Since the Cogl 1.18 branch is actively maintained in parallel with the master branch; this is a counter part to commit 1b83ef938fc16b which re-licensed the master branch to use the MIT license. This re-licensing is a follow up to the proposal that was sent to the Cogl mailing list: http://lists.freedesktop.org/archives/cogl/2013-December/001465.html Note: there was a copyright assignment policy in place for Clutter (and therefore Cogl which was part of Clutter at the time) until the 11th of June 2010 and so we only checked the details after that point (commit 0bbf50f905) For each file, authors were identified via this Git command: $ git blame -p -C -C -C20 -M -M10 0bbf50f905..HEAD We received blanket approvals for re-licensing all Red Hat and Collabora contributions which reduced how many people needed to be contacted individually: - http://lists.freedesktop.org/archives/cogl/2013-December/001470.html - http://lists.freedesktop.org/archives/cogl/2014-January/001536.html Individual approval requests were sent to all the other identified authors who all confirmed the re-license on the Cogl mailinglist: http://lists.freedesktop.org/archives/cogl/2014-January As well as updating the copyright header in all sources files, the COPYING file has been updated to reflect the license change and also document the other licenses used in Cogl such as the SGI Free Software License B, version 2.0 and the 3-clause BSD license. This patch was not simply cherry-picked from master; but the same methodology was used to check the source files.
2014-02-22 01:28:54 +00:00
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
pipeline-cache: Use a shared hash table wrapper The pipeline cache contains three separate hash tables, one for the state affecting the vertex shaders, one for the fragment shaders and one for the resulting combined program. Previously these hash tables had a fair bit of duplicated code to calculate the hashes, check for equality and copy the pipeline when it is added. This patch moves the common bits of code to a new type called CoglPipelineHashTable which just wraps a GHashTable with a given set of state flags to use for hashing and checking for equality. Reviewed-by: Robert Bragg <robert@linux.intel.com> (cherry picked from commit 402796430c839038339e531363b8c2463f9b2a9e) Conflicts: cogl/Makefile.am
2013-03-25 16:54:51 +00:00
*
This re-licenses Cogl 1.18 under the MIT license Since the Cogl 1.18 branch is actively maintained in parallel with the master branch; this is a counter part to commit 1b83ef938fc16b which re-licensed the master branch to use the MIT license. This re-licensing is a follow up to the proposal that was sent to the Cogl mailing list: http://lists.freedesktop.org/archives/cogl/2013-December/001465.html Note: there was a copyright assignment policy in place for Clutter (and therefore Cogl which was part of Clutter at the time) until the 11th of June 2010 and so we only checked the details after that point (commit 0bbf50f905) For each file, authors were identified via this Git command: $ git blame -p -C -C -C20 -M -M10 0bbf50f905..HEAD We received blanket approvals for re-licensing all Red Hat and Collabora contributions which reduced how many people needed to be contacted individually: - http://lists.freedesktop.org/archives/cogl/2013-December/001470.html - http://lists.freedesktop.org/archives/cogl/2014-January/001536.html Individual approval requests were sent to all the other identified authors who all confirmed the re-license on the Cogl mailinglist: http://lists.freedesktop.org/archives/cogl/2014-January As well as updating the copyright header in all sources files, the COPYING file has been updated to reflect the license change and also document the other licenses used in Cogl such as the SGI Free Software License B, version 2.0 and the 3-clause BSD license. This patch was not simply cherry-picked from master; but the same methodology was used to check the source files.
2014-02-22 01:28:54 +00:00
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
pipeline-cache: Use a shared hash table wrapper The pipeline cache contains three separate hash tables, one for the state affecting the vertex shaders, one for the fragment shaders and one for the resulting combined program. Previously these hash tables had a fair bit of duplicated code to calculate the hashes, check for equality and copy the pipeline when it is added. This patch moves the common bits of code to a new type called CoglPipelineHashTable which just wraps a GHashTable with a given set of state flags to use for hashing and checking for equality. Reviewed-by: Robert Bragg <robert@linux.intel.com> (cherry picked from commit 402796430c839038339e531363b8c2463f9b2a9e) Conflicts: cogl/Makefile.am
2013-03-25 16:54:51 +00:00
*
This re-licenses Cogl 1.18 under the MIT license Since the Cogl 1.18 branch is actively maintained in parallel with the master branch; this is a counter part to commit 1b83ef938fc16b which re-licensed the master branch to use the MIT license. This re-licensing is a follow up to the proposal that was sent to the Cogl mailing list: http://lists.freedesktop.org/archives/cogl/2013-December/001465.html Note: there was a copyright assignment policy in place for Clutter (and therefore Cogl which was part of Clutter at the time) until the 11th of June 2010 and so we only checked the details after that point (commit 0bbf50f905) For each file, authors were identified via this Git command: $ git blame -p -C -C -C20 -M -M10 0bbf50f905..HEAD We received blanket approvals for re-licensing all Red Hat and Collabora contributions which reduced how many people needed to be contacted individually: - http://lists.freedesktop.org/archives/cogl/2013-December/001470.html - http://lists.freedesktop.org/archives/cogl/2014-January/001536.html Individual approval requests were sent to all the other identified authors who all confirmed the re-license on the Cogl mailinglist: http://lists.freedesktop.org/archives/cogl/2014-January As well as updating the copyright header in all sources files, the COPYING file has been updated to reflect the license change and also document the other licenses used in Cogl such as the SGI Free Software License B, version 2.0 and the 3-clause BSD license. This patch was not simply cherry-picked from master; but the same methodology was used to check the source files.
2014-02-22 01:28:54 +00:00
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
pipeline-cache: Use a shared hash table wrapper The pipeline cache contains three separate hash tables, one for the state affecting the vertex shaders, one for the fragment shaders and one for the resulting combined program. Previously these hash tables had a fair bit of duplicated code to calculate the hashes, check for equality and copy the pipeline when it is added. This patch moves the common bits of code to a new type called CoglPipelineHashTable which just wraps a GHashTable with a given set of state flags to use for hashing and checking for equality. Reviewed-by: Robert Bragg <robert@linux.intel.com> (cherry picked from commit 402796430c839038339e531363b8c2463f9b2a9e) Conflicts: cogl/Makefile.am
2013-03-25 16:54:51 +00:00
*
*
*/
#ifndef __COGL_PIPELINE_HASH_H__
#define __COGL_PIPELINE_HASH_H__
pipeline-cache: Prune old unused pipelines when the cache gets too big Previously when a pipeline is added to the cache it would never be removed. If the application is generating a lot of unique pipelines this can end up effectively leaking a large number of resources including the GL program objects. Arguably this isn't really a problem because if the application is generating that many unique pipelines then it is doing something wrong anyway. It also implies that it will be recompiling shaders very often so the cache leaking will likely be the least of the problems. This patch makes it keep track of which pipelines in the cache are in use. The cache now returns a struct representing the entry instead of directly returning the pipeline. This entry contains a usage counter which the pipeline backends can use to mark when there is a pipeline alive that is using the cache entry. When the hash table decides that it's a good time to prune some entries, it will make a list of all of the pipelines that are not in use and then remove the least recently used half of the pipelines. That way it is less likely to remove pipelines that the application is actually regenerating often even if they aren't in use all of the time. When the cache is pruned the hash table makes a note of how small the cache could be if it removed all of the unused pipelines. The hash table starts pruning when there are more entries than twice this minimum expected size. The idea is that if that case it hit then the hash table is more than half full of useless pipelines so the application is generating lots of redundant pipelines and it is a good time to remove them. Reviewed-by: Robert Bragg <robert@linux.intel.com> (cherry picked from commit c21aac22992bb7fef5a8d0913130b8245e67f2eb) Conflicts: cogl/driver/gl/cogl-pipeline-fragend-glsl.c cogl/driver/gl/cogl-pipeline-progend-glsl.c cogl/driver/gl/cogl-pipeline-vertend-glsl.c cogl/driver/gl/gl/cogl-pipeline-fragend-arbfp.c
2013-12-18 15:18:39 +00:00
#include "cogl-pipeline-cache.h"
pipeline-cache: Use a shared hash table wrapper The pipeline cache contains three separate hash tables, one for the state affecting the vertex shaders, one for the fragment shaders and one for the resulting combined program. Previously these hash tables had a fair bit of duplicated code to calculate the hashes, check for equality and copy the pipeline when it is added. This patch moves the common bits of code to a new type called CoglPipelineHashTable which just wraps a GHashTable with a given set of state flags to use for hashing and checking for equality. Reviewed-by: Robert Bragg <robert@linux.intel.com> (cherry picked from commit 402796430c839038339e531363b8c2463f9b2a9e) Conflicts: cogl/Makefile.am
2013-03-25 16:54:51 +00:00
typedef struct
{
/* Total number of pipelines that were ever added to the hash. This
* is not decremented when a pipeline is removed. It is only used to
* generate a warning if an unusually high number of pipelines are
* generated */
int n_unique_pipelines;
pipeline-cache: Prune old unused pipelines when the cache gets too big Previously when a pipeline is added to the cache it would never be removed. If the application is generating a lot of unique pipelines this can end up effectively leaking a large number of resources including the GL program objects. Arguably this isn't really a problem because if the application is generating that many unique pipelines then it is doing something wrong anyway. It also implies that it will be recompiling shaders very often so the cache leaking will likely be the least of the problems. This patch makes it keep track of which pipelines in the cache are in use. The cache now returns a struct representing the entry instead of directly returning the pipeline. This entry contains a usage counter which the pipeline backends can use to mark when there is a pipeline alive that is using the cache entry. When the hash table decides that it's a good time to prune some entries, it will make a list of all of the pipelines that are not in use and then remove the least recently used half of the pipelines. That way it is less likely to remove pipelines that the application is actually regenerating often even if they aren't in use all of the time. When the cache is pruned the hash table makes a note of how small the cache could be if it removed all of the unused pipelines. The hash table starts pruning when there are more entries than twice this minimum expected size. The idea is that if that case it hit then the hash table is more than half full of useless pipelines so the application is generating lots of redundant pipelines and it is a good time to remove them. Reviewed-by: Robert Bragg <robert@linux.intel.com> (cherry picked from commit c21aac22992bb7fef5a8d0913130b8245e67f2eb) Conflicts: cogl/driver/gl/cogl-pipeline-fragend-glsl.c cogl/driver/gl/cogl-pipeline-progend-glsl.c cogl/driver/gl/cogl-pipeline-vertend-glsl.c cogl/driver/gl/gl/cogl-pipeline-fragend-arbfp.c
2013-12-18 15:18:39 +00:00
/* This is the expected minimum size we could prune the hash table
* to if we were to remove all pipelines that are not in use. This
* is only updated after we prune the table */
int expected_min_size;
pipeline-cache: Use a shared hash table wrapper The pipeline cache contains three separate hash tables, one for the state affecting the vertex shaders, one for the fragment shaders and one for the resulting combined program. Previously these hash tables had a fair bit of duplicated code to calculate the hashes, check for equality and copy the pipeline when it is added. This patch moves the common bits of code to a new type called CoglPipelineHashTable which just wraps a GHashTable with a given set of state flags to use for hashing and checking for equality. Reviewed-by: Robert Bragg <robert@linux.intel.com> (cherry picked from commit 402796430c839038339e531363b8c2463f9b2a9e) Conflicts: cogl/Makefile.am
2013-03-25 16:54:51 +00:00
/* String that will be used to describe the usage of this hash table
* in the debug warning when too many pipelines are generated. This
* must be a static string because it won't be copied or freed */
const char *debug_string;
unsigned int main_state;
unsigned int layer_state;
GHashTable *table;
} CoglPipelineHashTable;
void
_cogl_pipeline_hash_table_init (CoglPipelineHashTable *hash,
unsigned int main_state,
unsigned int layer_state,
const char *debug_string);
void
_cogl_pipeline_hash_table_destroy (CoglPipelineHashTable *hash);
/*
* Gets a pipeline from the hash that has the same state as
* @key_pipeline according to the limited state bits passed to
* _cogl_pipeline_hash_table_init(). If there is no matching pipelines
* already then a copy of key_pipeline is stored in the hash so that
* it will be used next time the function is called with a similar
* pipeline. In that case the copy itself will be returned
*/
pipeline-cache: Prune old unused pipelines when the cache gets too big Previously when a pipeline is added to the cache it would never be removed. If the application is generating a lot of unique pipelines this can end up effectively leaking a large number of resources including the GL program objects. Arguably this isn't really a problem because if the application is generating that many unique pipelines then it is doing something wrong anyway. It also implies that it will be recompiling shaders very often so the cache leaking will likely be the least of the problems. This patch makes it keep track of which pipelines in the cache are in use. The cache now returns a struct representing the entry instead of directly returning the pipeline. This entry contains a usage counter which the pipeline backends can use to mark when there is a pipeline alive that is using the cache entry. When the hash table decides that it's a good time to prune some entries, it will make a list of all of the pipelines that are not in use and then remove the least recently used half of the pipelines. That way it is less likely to remove pipelines that the application is actually regenerating often even if they aren't in use all of the time. When the cache is pruned the hash table makes a note of how small the cache could be if it removed all of the unused pipelines. The hash table starts pruning when there are more entries than twice this minimum expected size. The idea is that if that case it hit then the hash table is more than half full of useless pipelines so the application is generating lots of redundant pipelines and it is a good time to remove them. Reviewed-by: Robert Bragg <robert@linux.intel.com> (cherry picked from commit c21aac22992bb7fef5a8d0913130b8245e67f2eb) Conflicts: cogl/driver/gl/cogl-pipeline-fragend-glsl.c cogl/driver/gl/cogl-pipeline-progend-glsl.c cogl/driver/gl/cogl-pipeline-vertend-glsl.c cogl/driver/gl/gl/cogl-pipeline-fragend-arbfp.c
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CoglPipelineCacheEntry *
pipeline-cache: Use a shared hash table wrapper The pipeline cache contains three separate hash tables, one for the state affecting the vertex shaders, one for the fragment shaders and one for the resulting combined program. Previously these hash tables had a fair bit of duplicated code to calculate the hashes, check for equality and copy the pipeline when it is added. This patch moves the common bits of code to a new type called CoglPipelineHashTable which just wraps a GHashTable with a given set of state flags to use for hashing and checking for equality. Reviewed-by: Robert Bragg <robert@linux.intel.com> (cherry picked from commit 402796430c839038339e531363b8c2463f9b2a9e) Conflicts: cogl/Makefile.am
2013-03-25 16:54:51 +00:00
_cogl_pipeline_hash_table_get (CoglPipelineHashTable *hash,
CoglPipeline *key_pipeline);
#endif /* __COGL_PIPELINE_HASH_H__ */
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