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texturePool.cxx
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texturePool.cxx
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/**
* PANDA 3D SOFTWARE
* Copyright (c) Carnegie Mellon University. All rights reserved.
*
* All use of this software is subject to the terms of the revised BSD
* license. You should have received a copy of this license along
* with this source code in a file named "LICENSE."
*
* @file texturePool.cxx
* @author drose
* @date 2000-04-26
* @author fperazzi, PandaSE
* @date 2010-04-29
*/
#include "texturePool.h"
#include "config_gobj.h"
#include "config_putil.h"
#include "config_express.h"
#include "string_utils.h"
#include "virtualFileSystem.h"
#include "bamCache.h"
#include "bamCacheRecord.h"
#include "pnmFileTypeRegistry.h"
#include "texturePoolFilter.h"
#include "configVariableList.h"
#include "load_dso.h"
#include "mutexHolder.h"
#include "dcast.h"
#include <algorithm>
using std::istream;
using std::ostream;
using std::string;
TexturePool *TexturePool::_global_ptr;
/**
* Lists the contents of the texture pool to the indicated output stream. For
* debugging.
*/
void TexturePool::
write(ostream &out) {
get_global_ptr()->ns_list_contents(out);
}
/**
* Records a factory function that makes a Texture object of the appropriate
* type for one or more particular filename extensions. The string extensions
* may be a string that contains space-separated list of extensions, case-
* insensitive.
*/
void TexturePool::
register_texture_type(MakeTextureFunc *func, const string &extensions) {
MutexHolder holder(_lock);
vector_string words;
extract_words(downcase(extensions), words);
vector_string::const_iterator wi;
for (wi = words.begin(); wi != words.end(); ++wi) {
_type_registry[*wi] = func;
}
}
/**
* Records a TexturePoolFilter object that may operate on texture images as
* they are loaded from disk.
*/
bool TexturePool::
ns_register_filter(TexturePoolFilter *tex_filter) {
MutexHolder holder(_filter_lock);
// Make sure we haven't already registered this filter.
if (std::find(_filter_registry.begin(), _filter_registry.end(), tex_filter) != _filter_registry.end()) {
gobj_cat->warning()
<< "Attempted to register texture filter " << *tex_filter
<< " more than once.\n";
return false;
}
gobj_cat.info()
<< "Registering Texture filter " << *tex_filter << "\n";
_filter_registry.push_back(tex_filter);
return true;
}
/**
* Stops all TexturePoolFilter objects from operating on this pool.
*/
void TexturePool::
ns_clear_filters() {
MutexHolder holder(_filter_lock);
_filter_registry.clear();
}
/**
* Checks whether the given TexturePoolFilter object is
* currently registered in the texture pool or not.
*/
bool TexturePool::
ns_is_filter_registered(TexturePoolFilter *tex_filter) {
MutexHolder holder(_filter_lock);
return std::find(_filter_registry.begin(), _filter_registry.end(), tex_filter) != _filter_registry.end();
}
/**
* Stops a TexturePoolFilter object from operating on this pool.
*/
bool TexturePool::
ns_unregister_filter(TexturePoolFilter *tex_filter) {
MutexHolder holder(_filter_lock);
FilterRegistry::iterator fi = std::find(_filter_registry.begin(), _filter_registry.end(), tex_filter);
if (fi == _filter_registry.end()) {
gobj_cat.warning()
<< "Attempted to unregister texture filter " << *tex_filter
<< " which was not registered.\n";
return false;
}
gobj_cat.info()
<< "Unregistering Texture filter " << *tex_filter << "\n";
_filter_registry.erase(fi);
return true;
}
/**
* Returns the total number of registered texture pool filters.
*/
size_t TexturePool::
get_num_filters() const {
return _filter_registry.size();
}
/**
* Returns the nth texture pool filter registered.
*/
TexturePoolFilter *TexturePool::
get_filter(size_t i) const {
MutexHolder holder(_filter_lock);
if (i >= 0 && i < _filter_registry.size()) {
return _filter_registry[i];
}
return nullptr;
}
/**
* Returns the factory function to construct a new texture of the type
* appropriate for the indicated filename extension, if any, or NULL if the
* extension is not one of the extensions for a texture file.
*/
TexturePool::MakeTextureFunc *TexturePool::
get_texture_type(const string &extension) const {
MutexHolder holder(_lock);
string c = downcase(extension);
TypeRegistry::const_iterator ti;
ti = _type_registry.find(c);
if (ti != _type_registry.end()) {
return (*ti).second;
}
// Check the PNM type registry.
PNMFileTypeRegistry *pnm_reg = PNMFileTypeRegistry::get_global_ptr();
PNMFileType *type = pnm_reg->get_type_from_extension(c);
if (type != nullptr || c == "txo" || c == "dds" || c == "ktx") {
// This is a known image type; create an ordinary Texture.
((TexturePool *)this)->_type_registry[c] = Texture::make_texture;
return Texture::make_texture;
}
// This is an unknown texture type.
return nullptr;
}
/**
* Outputs a list of the available texture types to the indicated output
* stream. This is mostly the list of available image types, with maybe a few
* additional ones for video textures.
*/
void TexturePool::
write_texture_types(ostream &out, int indent_level) const {
MutexHolder holder(_lock);
// These are supported out of the box.
indent(out, indent_level) << "Texture Object .txo\n";
indent(out, indent_level) << "DirectDraw Surface .dds\n";
indent(out, indent_level) << "Khronos Texture .ktx\n";
PNMFileTypeRegistry *pnm_reg = PNMFileTypeRegistry::get_global_ptr();
pnm_reg->write(out, indent_level);
// Also output any of the additional texture types, that aren't strictly
// images (these are typically video textures).
TypeRegistry::const_iterator ti;
for (ti = _type_registry.begin(); ti != _type_registry.end(); ++ti) {
string extension = (*ti).first;
MakeTextureFunc *func = (*ti).second;
if (pnm_reg->get_type_from_extension(extension) == nullptr) {
PT(Texture) tex = func();
string name = tex->get_type().get_name();
indent(out, indent_level) << name;
indent(out, std::max(30 - (int)name.length(), 0))
<< " ." << extension << "\n";
}
}
}
/**
* Initializes and/or returns the global pointer to the one TexturePool object
* in the system.
*/
TexturePool *TexturePool::
get_global_ptr() {
if (_global_ptr == nullptr) {
_global_ptr = new TexturePool;
// We have to call this here, not in the constructor, so that the
// _global_ptr is safely assigned by the time the filters begin to load.
_global_ptr->load_filters();
}
return _global_ptr;
}
/**
* The constructor is not intended to be called directly; there's only
* supposed to be one TexturePool in the universe and it constructs itself.
*/
TexturePool::
TexturePool() {
ConfigVariableFilename fake_texture_image
("fake-texture-image", "",
PRC_DESC("Set this to enable a speedy-load mode in which you don't care "
"what the world looks like, you just want it to load in minimal "
"time. This causes all texture loads via the TexturePool to use "
"the same texture file, which will presumably only be loaded "
"once."));
_fake_texture_image = fake_texture_image;
}
/**
* The nonstatic implementation of has_texture().
*/
bool TexturePool::
ns_has_texture(const Filename &orig_filename) {
MutexHolder holder(_lock);
LookupKey key;
resolve_filename(key._fullpath, orig_filename, false, LoaderOptions());
Textures::const_iterator ti;
ti = _textures.find(key);
if (ti != _textures.end()) {
// This texture was previously loaded.
return true;
}
// It might still have been loaded with non-standard settings.
for (ti = _textures.begin(); ti != _textures.end(); ++ti) {
if (ti->first._fullpath == key._fullpath) {
return true;
}
}
return false;
}
/**
* The nonstatic implementation of load_texture().
*/
Texture *TexturePool::
ns_load_texture(const Filename &orig_filename, int primary_file_num_channels,
bool read_mipmaps, const LoaderOptions &options) {
LookupKey key;
key._primary_file_num_channels = primary_file_num_channels;
{
MutexHolder holder(_lock);
resolve_filename(key._fullpath, orig_filename, read_mipmaps, options);
Textures::const_iterator ti;
ti = _textures.find(key);
if (ti != _textures.end()) {
// This texture was previously loaded.
Texture *tex = (*ti).second;
nassertr(!tex->get_fullpath().empty(), tex);
return tex;
}
}
// The texture was not found in the pool.
PT(Texture) tex;
PT(BamCacheRecord) record;
bool store_record = false;
bool use_filters = (options.get_texture_flags() & LoaderOptions::TF_no_filters) == 0;
// Can one of our texture filters supply the texture?
if (use_filters) {
tex = pre_load(orig_filename, Filename(), primary_file_num_channels, 0,
read_mipmaps, options);
}
BamCache *cache = BamCache::get_global_ptr();
bool compressed_cache_record = false;
try_load_cache(tex, cache, key._fullpath, record, compressed_cache_record,
options);
if (tex == nullptr) {
// The texture was neither in the pool, nor found in the on-disk cache; it
// needs to be loaded from its source image(s).
gobj_cat.info()
<< "Loading texture " << key._fullpath << "\n";
string ext = downcase(key._fullpath.get_extension());
if (ext == "txo" || ext == "bam") {
// Assume this is a txo file, which might conceivably contain a movie
// file or some other subclass of Texture. In that case, use
// make_from_txo() to load it instead of read().
VirtualFileSystem *vfs = VirtualFileSystem::get_global_ptr();
key._fullpath.set_binary();
PT(VirtualFile) file = vfs->get_file(key._fullpath);
if (file == nullptr) {
// No such file.
gobj_cat.error()
<< "Could not find " << key._fullpath << "\n";
return nullptr;
}
if (gobj_cat.is_debug()) {
gobj_cat.debug()
<< "Reading texture object " << key._fullpath << "\n";
}
istream *in = file->open_read_file(true);
tex = Texture::make_from_txo(*in, key._fullpath);
vfs->close_read_file(in);
if (tex == nullptr) {
return nullptr;
}
tex->set_fullpath(key._fullpath);
tex->clear_alpha_fullpath();
tex->set_keep_ram_image(false);
} else {
// Read it the conventional way.
tex = ns_make_texture(ext);
if (!tex->read(key._fullpath, Filename(), primary_file_num_channels, 0,
0, 0, false, read_mipmaps, record, options)) {
// This texture was not found or could not be read.
report_texture_unreadable(key._fullpath);
return nullptr;
}
}
if (options.get_texture_flags() & LoaderOptions::TF_preload_simple) {
tex->generate_simple_ram_image();
}
store_record = (record != nullptr);
}
if (cache->get_cache_compressed_textures() && tex->has_compression()) {
#ifndef HAVE_SQUISH
bool needs_driver_compression = true;
#else
bool needs_driver_compression = driver_compress_textures;
#endif // HAVE_SQUISH
if (needs_driver_compression) {
// We don't want to save the uncompressed version; we'll save the
// compressed version when it becomes available.
store_record = false;
if (!compressed_cache_record) {
tex->set_post_load_store_cache(true);
}
}
} else if (!cache->get_cache_textures()) {
// We don't want to save this texture.
store_record = false;
}
// Set the original filename, before we searched along the path.
nassertr(tex != nullptr, nullptr);
tex->set_filename(orig_filename);
tex->set_fullpath(key._fullpath);
tex->_texture_pool_key = key._fullpath;
{
MutexHolder holder(_lock);
// Now look again--someone may have just loaded this texture in another
// thread.
Textures::const_iterator ti;
ti = _textures.find(key);
if (ti != _textures.end()) {
// This texture was previously loaded.
Texture *tex = (*ti).second;
nassertr(!tex->get_fullpath().empty(), tex);
return tex;
}
_textures[std::move(key)] = tex;
}
if (store_record && tex->is_cacheable()) {
// Store the on-disk cache record for next time.
record->set_data(tex);
cache->store(record);
}
if (!(options.get_texture_flags() & LoaderOptions::TF_preload)) {
// And now drop the RAM until we need it.
tex->clear_ram_image();
}
nassertr(!tex->get_fullpath().empty(), tex);
// Finally, apply any post-loading texture filters.
if (use_filters) {
tex = post_load(tex);
}
return tex;
}
/**
* The nonstatic implementation of load_texture().
*/
Texture *TexturePool::
ns_load_texture(const Filename &orig_filename,
const Filename &orig_alpha_filename,
int primary_file_num_channels,
int alpha_file_channel,
bool read_mipmaps, const LoaderOptions &options) {
if (!_fake_texture_image.empty()) {
return ns_load_texture(_fake_texture_image, primary_file_num_channels,
read_mipmaps, options);
}
LookupKey key;
key._primary_file_num_channels = primary_file_num_channels;
key._alpha_file_channel = alpha_file_channel;
{
MutexHolder holder(_lock);
resolve_filename(key._fullpath, orig_filename, read_mipmaps, options);
resolve_filename(key._alpha_fullpath, orig_alpha_filename, read_mipmaps, options);
Textures::const_iterator ti;
ti = _textures.find(key);
if (ti != _textures.end()) {
// This texture was previously loaded.
Texture *tex = (*ti).second;
nassertr(!tex->get_fullpath().empty(), tex);
return tex;
}
}
PT(Texture) tex;
PT(BamCacheRecord) record;
bool store_record = false;
bool use_filters = (options.get_texture_flags() & LoaderOptions::TF_no_filters) == 0;
// Can one of our texture filters supply the texture?
if (use_filters) {
tex = pre_load(orig_filename, orig_alpha_filename, primary_file_num_channels,
alpha_file_channel, read_mipmaps, options);
}
BamCache *cache = BamCache::get_global_ptr();
bool compressed_cache_record = false;
try_load_cache(tex, cache, key._fullpath, record, compressed_cache_record,
options);
if (tex == nullptr) {
// The texture was neither in the pool, nor found in the on-disk cache; it
// needs to be loaded from its source image(s).
gobj_cat.info()
<< "Loading texture " << key._fullpath << " and alpha component "
<< key._alpha_fullpath << std::endl;
tex = ns_make_texture(key._fullpath.get_extension());
if (!tex->read(key._fullpath, key._alpha_fullpath, primary_file_num_channels,
alpha_file_channel, 0, 0, false, read_mipmaps, nullptr,
options)) {
// This texture was not found or could not be read.
report_texture_unreadable(key._fullpath);
return nullptr;
}
if (options.get_texture_flags() & LoaderOptions::TF_preload_simple) {
tex->generate_simple_ram_image();
}
store_record = (record != nullptr);
}
if (cache->get_cache_compressed_textures() && tex->has_compression()) {
#ifndef HAVE_SQUISH
bool needs_driver_compression = true;
#else
bool needs_driver_compression = driver_compress_textures;
#endif // HAVE_SQUISH
if (needs_driver_compression) {
// We don't want to save the uncompressed version; we'll save the
// compressed version when it becomes available.
store_record = false;
if (!compressed_cache_record) {
tex->set_post_load_store_cache(true);
}
}
} else if (!cache->get_cache_textures()) {
// We don't want to save this texture.
store_record = false;
}
// Set the original filenames, before we searched along the path.
nassertr(tex != nullptr, nullptr);
tex->set_filename(orig_filename);
tex->set_fullpath(key._fullpath);
tex->set_alpha_filename(orig_alpha_filename);
tex->set_alpha_fullpath(key._alpha_fullpath);
tex->_texture_pool_key = key._fullpath;
{
MutexHolder holder(_lock);
// Now look again.
Textures::const_iterator ti;
ti = _textures.find(key);
if (ti != _textures.end()) {
// This texture was previously loaded.
Texture *tex = (*ti).second;
nassertr(!tex->get_fullpath().empty(), tex);
return tex;
}
_textures[std::move(key)] = tex;
}
if (store_record && tex->is_cacheable()) {
// Store the on-disk cache record for next time.
record->set_data(tex);
cache->store(record);
}
if (!(options.get_texture_flags() & LoaderOptions::TF_preload)) {
// And now drop the RAM until we need it.
tex->clear_ram_image();
}
nassertr(!tex->get_fullpath().empty(), tex);
// Finally, apply any post-loading texture filters.
if (use_filters) {
tex = post_load(tex);
}
return tex;
}
/**
* The nonstatic implementation of load_3d_texture().
*/
Texture *TexturePool::
ns_load_3d_texture(const Filename &filename_pattern,
bool read_mipmaps, const LoaderOptions &options) {
Filename orig_filename(filename_pattern);
orig_filename.set_pattern(true);
LookupKey key;
key._texture_type = Texture::TT_3d_texture;
{
MutexHolder holder(_lock);
resolve_filename(key._fullpath, orig_filename, read_mipmaps, options);
Textures::const_iterator ti;
ti = _textures.find(key);
if (ti != _textures.end()) {
// This texture was previously loaded.
Texture *tex = (*ti).second;
nassertr(!tex->get_fullpath().empty(), tex);
return tex;
}
}
PT(Texture) tex;
PT(BamCacheRecord) record;
bool store_record = false;
BamCache *cache = BamCache::get_global_ptr();
bool compressed_cache_record = false;
try_load_cache(tex, cache, key._fullpath, record, compressed_cache_record,
options);
if (tex == nullptr ||
tex->get_texture_type() != Texture::TT_3d_texture) {
// The texture was neither in the pool, nor found in the on-disk cache; it
// needs to be loaded from its source image(s).
gobj_cat.info()
<< "Loading 3-d texture " << key._fullpath << "\n";
tex = ns_make_texture(key._fullpath.get_extension());
tex->setup_3d_texture();
if (!tex->read(key._fullpath, 0, 0, true, read_mipmaps, options)) {
// This texture was not found or could not be read.
report_texture_unreadable(key._fullpath);
return nullptr;
}
store_record = (record != nullptr);
}
if (cache->get_cache_compressed_textures() && tex->has_compression()) {
#ifndef HAVE_SQUISH
bool needs_driver_compression = true;
#else
bool needs_driver_compression = driver_compress_textures;
#endif // HAVE_SQUISH
if (needs_driver_compression) {
// We don't want to save the uncompressed version; we'll save the
// compressed version when it becomes available.
store_record = false;
if (!compressed_cache_record) {
tex->set_post_load_store_cache(true);
}
}
} else if (!cache->get_cache_textures()) {
// We don't want to save this texture.
store_record = false;
}
// Set the original filename, before we searched along the path.
nassertr(tex != nullptr, nullptr);
tex->set_filename(filename_pattern);
tex->set_fullpath(key._fullpath);
tex->_texture_pool_key = key._fullpath;
{
MutexHolder holder(_lock);
// Now look again.
Textures::const_iterator ti;
ti = _textures.find(key);
if (ti != _textures.end()) {
// This texture was previously loaded.
Texture *tex = (*ti).second;
nassertr(!tex->get_fullpath().empty(), tex);
return tex;
}
_textures[std::move(key)] = tex;
}
if (store_record && tex->is_cacheable()) {
// Store the on-disk cache record for next time.
record->set_data(tex);
cache->store(record);
}
nassertr(!tex->get_fullpath().empty(), tex);
return tex;
}
/**
* The nonstatic implementation of load_2d_texture_array().
*/
Texture *TexturePool::
ns_load_2d_texture_array(const Filename &filename_pattern,
bool read_mipmaps, const LoaderOptions &options) {
Filename orig_filename(filename_pattern);
orig_filename.set_pattern(true);
LookupKey key;
key._texture_type = Texture::TT_2d_texture_array;
{
MutexHolder holder(_lock);
resolve_filename(key._fullpath, orig_filename, read_mipmaps, options);
Textures::const_iterator ti;
ti = _textures.find(key);
if (ti != _textures.end()) {
// This texture was previously loaded.
Texture *tex = (*ti).second;
nassertr(!tex->get_fullpath().empty(), tex);
return tex;
}
}
PT(Texture) tex;
PT(BamCacheRecord) record;
bool store_record = false;
BamCache *cache = BamCache::get_global_ptr();
bool compressed_cache_record = false;
try_load_cache(tex, cache, key._fullpath, record, compressed_cache_record,
options);
if (tex == nullptr ||
tex->get_texture_type() != Texture::TT_2d_texture_array) {
// The texture was neither in the pool, nor found in the on-disk cache; it
// needs to be loaded from its source image(s).
gobj_cat.info()
<< "Loading 2-d texture array " << key._fullpath << "\n";
tex = ns_make_texture(key._fullpath.get_extension());
tex->setup_2d_texture_array();
if (!tex->read(key._fullpath, 0, 0, true, read_mipmaps, options)) {
// This texture was not found or could not be read.
report_texture_unreadable(key._fullpath);
return nullptr;
}
store_record = (record != nullptr);
}
if (cache->get_cache_compressed_textures() && tex->has_compression()) {
#ifndef HAVE_SQUISH
bool needs_driver_compression = true;
#else
bool needs_driver_compression = driver_compress_textures;
#endif // HAVE_SQUISH
if (needs_driver_compression) {
// We don't want to save the uncompressed version; we'll save the
// compressed version when it becomes available.
store_record = false;
if (!compressed_cache_record) {
tex->set_post_load_store_cache(true);
}
}
} else if (!cache->get_cache_textures()) {
// We don't want to save this texture.
store_record = false;
}
// Set the original filename, before we searched along the path.
nassertr(tex != nullptr, nullptr);
tex->set_filename(filename_pattern);
tex->set_fullpath(key._fullpath);
tex->_texture_pool_key = key._fullpath;
{
MutexHolder holder(_lock);
// Now look again.
Textures::const_iterator ti;
ti = _textures.find(key);
if (ti != _textures.end()) {
// This texture was previously loaded.
Texture *tex = (*ti).second;
nassertr(!tex->get_fullpath().empty(), tex);
return tex;
}
_textures[std::move(key)] = tex;
}
if (store_record && tex->is_cacheable()) {
// Store the on-disk cache record for next time.
record->set_data(tex);
cache->store(record);
}
nassertr(!tex->get_fullpath().empty(), tex);
return tex;
}
/**
* The nonstatic implementation of load_cube_map().
*/
Texture *TexturePool::
ns_load_cube_map(const Filename &filename_pattern, bool read_mipmaps,
const LoaderOptions &options) {
Filename orig_filename(filename_pattern);
orig_filename.set_pattern(true);
LookupKey key;
key._texture_type = Texture::TT_cube_map;
{
MutexHolder holder(_lock);
resolve_filename(key._fullpath, orig_filename, read_mipmaps, options);
Textures::const_iterator ti;
ti = _textures.find(key);
if (ti != _textures.end()) {
// This texture was previously loaded.
Texture *tex = (*ti).second;
nassertr(!tex->get_fullpath().empty(), tex);
return tex;
}
}
PT(Texture) tex;
PT(BamCacheRecord) record;
bool store_record = false;
BamCache *cache = BamCache::get_global_ptr();
bool compressed_cache_record = false;
try_load_cache(tex, cache, key._fullpath, record, compressed_cache_record,
options);
if (tex == nullptr ||
tex->get_texture_type() != Texture::TT_cube_map) {
// The texture was neither in the pool, nor found in the on-disk cache; it
// needs to be loaded from its source image(s).
gobj_cat.info()
<< "Loading cube map texture " << key._fullpath << "\n";
tex = ns_make_texture(key._fullpath.get_extension());
tex->setup_cube_map();
if (!tex->read(key._fullpath, 0, 0, true, read_mipmaps, options)) {
// This texture was not found or could not be read.
report_texture_unreadable(key._fullpath);
return nullptr;
}
store_record = (record != nullptr);
}
if (cache->get_cache_compressed_textures() && tex->has_compression()) {
#ifndef HAVE_SQUISH
bool needs_driver_compression = true;
#else
bool needs_driver_compression = driver_compress_textures;
#endif // HAVE_SQUISH
if (needs_driver_compression) {
// We don't want to save the uncompressed version; we'll save the
// compressed version when it becomes available.
store_record = false;
if (!compressed_cache_record) {
tex->set_post_load_store_cache(true);
}
}
} else if (!cache->get_cache_textures()) {
// We don't want to save this texture.
store_record = false;
}
// Set the original filename, before we searched along the path.
nassertr(tex != nullptr, nullptr);
tex->set_filename(filename_pattern);
tex->set_fullpath(key._fullpath);
tex->_texture_pool_key = key._fullpath;
{
MutexHolder holder(_lock);
// Now look again.
Textures::const_iterator ti;
ti = _textures.find(key);
if (ti != _textures.end()) {
// This texture was previously loaded.
Texture *tex = (*ti).second;
nassertr(!tex->get_fullpath().empty(), tex);
return tex;
}
_textures[std::move(key)] = tex;
}
if (store_record && tex->is_cacheable()) {
// Store the on-disk cache record for next time.
record->set_data(tex);
cache->store(record);
}
nassertr(!tex->get_fullpath().empty(), tex);
return tex;
}
/**
* The nonstatic implementation of get_normalization_cube_map().
*/
Texture *TexturePool::
ns_get_normalization_cube_map(int size) {
MutexHolder holder(_lock);
if (_normalization_cube_map == nullptr) {
_normalization_cube_map = new Texture("normalization_cube_map");
}
if (_normalization_cube_map->get_x_size() < size ||
_normalization_cube_map->get_texture_type() != Texture::TT_cube_map) {
_normalization_cube_map->generate_normalization_cube_map(size);
}
return _normalization_cube_map;
}
/**
* The nonstatic implementation of get_alpha_scale_map().
*/
Texture *TexturePool::
ns_get_alpha_scale_map() {
MutexHolder holder(_lock);
if (_alpha_scale_map == nullptr) {
_alpha_scale_map = new Texture("alpha_scale_map");
_alpha_scale_map->generate_alpha_scale_map();
}
return _alpha_scale_map;
}
/**
* The nonstatic implementation of add_texture().
*/
void TexturePool::
ns_add_texture(Texture *tex) {
PT(Texture) keep = tex;
MutexHolder holder(_lock);
if (!tex->_texture_pool_key.empty()) {
ns_release_texture(tex);
}
Texture::CDReader tex_cdata(tex->_cycler);
if (tex_cdata->_fullpath.empty()) {
gobj_cat.error() << "Attempt to call add_texture() on an unnamed texture.\n";
return;
}
LookupKey key;
key._fullpath = tex_cdata->_fullpath;
key._alpha_fullpath = tex_cdata->_alpha_fullpath;
key._alpha_file_channel = tex_cdata->_alpha_file_channel;
key._texture_type = tex_cdata->_texture_type;
// We blow away whatever texture was there previously, if any.
tex->_texture_pool_key = key._fullpath;
_textures[key] = tex;
}
/**
* The nonstatic implementation of release_texture().
*/
void TexturePool::
ns_release_texture(Texture *tex) {
MutexHolder holder(_lock);
Textures::iterator ti;
for (ti = _textures.begin(); ti != _textures.end(); ++ti) {
if (tex == (*ti).second) {
_textures.erase(ti);
tex->_texture_pool_key = string();
break;
}
}
// Blow away the cache of resolved relative filenames.
_relpath_lookup.clear();
}
/**
* The nonstatic implementation of release_all_textures().
*/
void TexturePool::
ns_release_all_textures() {
MutexHolder holder(_lock);
Textures::iterator ti;
for (ti = _textures.begin(); ti != _textures.end(); ++ti) {
Texture *tex = (*ti).second;
tex->_texture_pool_key = string();
}
_textures.clear();
_normalization_cube_map = nullptr;
// Blow away the cache of resolved relative filenames.
_relpath_lookup.clear();
}
/**
* The nonstatic implementation of garbage_collect().
*/
int TexturePool::
ns_garbage_collect() {
MutexHolder holder(_lock);
int num_released = 0;
Textures new_set;
Textures::iterator ti;
for (ti = _textures.begin(); ti != _textures.end(); ++ti) {
Texture *tex = (*ti).second;
if (tex->get_ref_count() == 1) {
if (gobj_cat.is_debug()) {
gobj_cat.debug()
<< "Releasing " << (*ti).first._fullpath << "\n";
}
++num_released;
tex->_texture_pool_key = string();
} else {
new_set.insert(new_set.end(), *ti);
}