diff options
Diffstat (limited to 'scene/resources/shader_include.cpp')
| -rw-r--r-- | scene/resources/shader_include.cpp | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/scene/resources/shader_include.cpp b/scene/resources/shader_include.cpp new file mode 100644 index 0000000000..fe628dd323 --- /dev/null +++ b/scene/resources/shader_include.cpp @@ -0,0 +1,144 @@ +/*************************************************************************/ +/* shader_include.cpp */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* https://godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */ +/* */ +/* 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: */ +/* */ +/* The above copyright notice and this permission notice shall be */ +/* included in all copies or substantial portions of the Software. */ +/* */ +/* 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. */ +/*************************************************************************/ + +#include "shader_include.h" +#include "servers/rendering/shader_language.h" +#include "servers/rendering/shader_preprocessor.h" + +void ShaderInclude::_dependency_changed() { + emit_changed(); +} + +void ShaderInclude::set_code(const String &p_code) { + HashSet<Ref<ShaderInclude>> new_dependencies; + code = p_code; + + for (Ref<ShaderInclude> E : dependencies) { + E->disconnect(SNAME("changed"), callable_mp(this, &ShaderInclude::_dependency_changed)); + } + + { + String pp_code; + ShaderPreprocessor preprocessor; + preprocessor.preprocess(p_code, "", pp_code, nullptr, nullptr, nullptr, &new_dependencies); + } + + // This ensures previous include resources are not freed and then re-loaded during parse (which would make compiling slower) + dependencies = new_dependencies; + + for (Ref<ShaderInclude> E : dependencies) { + E->connect(SNAME("changed"), callable_mp(this, &ShaderInclude::_dependency_changed)); + } + + emit_changed(); +} + +String ShaderInclude::get_code() const { + return code; +} + +void ShaderInclude::_bind_methods() { + ClassDB::bind_method(D_METHOD("set_code", "code"), &ShaderInclude::set_code); + ClassDB::bind_method(D_METHOD("get_code"), &ShaderInclude::get_code); + + ADD_PROPERTY(PropertyInfo(Variant::STRING, "code", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NO_EDITOR), "set_code", "get_code"); +} + +// ResourceFormatLoaderShaderInclude + +Ref<Resource> ResourceFormatLoaderShaderInclude::load(const String &p_path, const String &p_original_path, Error *r_error, bool p_use_sub_threads, float *r_progress, CacheMode p_cache_mode) { + if (r_error) { + *r_error = ERR_FILE_CANT_OPEN; + } + + Ref<ShaderInclude> shader_inc; + shader_inc.instantiate(); + + Vector<uint8_t> buffer = FileAccess::get_file_as_array(p_path); + + String str; + str.parse_utf8((const char *)buffer.ptr(), buffer.size()); + + shader_inc->set_code(str); + + if (r_error) { + *r_error = OK; + } + + return shader_inc; +} + +void ResourceFormatLoaderShaderInclude::get_recognized_extensions(List<String> *p_extensions) const { + p_extensions->push_back("gdshaderinc"); +} + +bool ResourceFormatLoaderShaderInclude::handles_type(const String &p_type) const { + return (p_type == "ShaderInclude"); +} + +String ResourceFormatLoaderShaderInclude::get_resource_type(const String &p_path) const { + String extension = p_path.get_extension().to_lower(); + if (extension == "gdshaderinc") { + return "ShaderInclude"; + } + return ""; +} + +// ResourceFormatSaverShaderInclude + +Error ResourceFormatSaverShaderInclude::save(const Ref<Resource> &p_resource, const String &p_path, uint32_t p_flags) { + Ref<ShaderInclude> shader_inc = p_resource; + ERR_FAIL_COND_V(shader_inc.is_null(), ERR_INVALID_PARAMETER); + + String source = shader_inc->get_code(); + + Error error; + Ref<FileAccess> file = FileAccess::open(p_path, FileAccess::WRITE, &error); + + ERR_FAIL_COND_V_MSG(error, error, "Cannot save shader include '" + p_path + "'."); + + file->store_string(source); + if (file->get_error() != OK && file->get_error() != ERR_FILE_EOF) { + return ERR_CANT_CREATE; + } + + return OK; +} + +void ResourceFormatSaverShaderInclude::get_recognized_extensions(const Ref<Resource> &p_resource, List<String> *p_extensions) const { + const ShaderInclude *shader_inc = Object::cast_to<ShaderInclude>(*p_resource); + if (shader_inc != nullptr) { + p_extensions->push_back("gdshaderinc"); + } +} + +bool ResourceFormatSaverShaderInclude::recognize(const Ref<Resource> &p_resource) const { + return p_resource->get_class_name() == "ShaderInclude"; //only shader, not inherited +} |