mirror of
https://github.com/holub/mame
synced 2025-06-24 13:26:36 +03:00
95 lines
2.2 KiB
C++
95 lines
2.2 KiB
C++
// license:BSD-3-Clause
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// copyright-holders:Ryan Holtz
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//============================================================
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//
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// effectmanager.cpp - BGFX shader effect manager
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//
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// Maintains a string-to-entry lookup of BGFX shader
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// effects, defined by effect.h and read by effectreader.h
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//
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//============================================================
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#include <rapidjson/document.h>
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#include <rapidjson/error/en.h>
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#include <bx/readerwriter.h>
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#include <bx/crtimpl.h>
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#include "emu.h"
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#include <bgfx/bgfx.h>
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#include "effectmanager.h"
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#include "effectreader.h"
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#include "effect.h"
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using namespace rapidjson;
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effect_manager::~effect_manager()
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{
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for (std::pair<std::string, bgfx_effect*> effect : m_effects)
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{
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delete effect.second;
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}
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m_effects.clear();
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}
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bgfx_effect* effect_manager::effect(std::string name)
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{
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std::map<std::string, bgfx_effect*>::iterator iter = m_effects.find(name);
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if (iter != m_effects.end())
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{
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return iter->second;
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}
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return load_effect(name);
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}
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bgfx_effect* effect_manager::load_effect(std::string name)
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{
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std::string full_name = name;
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if (full_name.length() < 5 || (full_name.compare(full_name.length() - 5, 5, ".json") != 0)) {
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full_name = full_name + ".json";
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}
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std::string path;
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osd_subst_env(path, util::string_format("%s" PATH_SEPARATOR "effects" PATH_SEPARATOR, m_options.bgfx_path()));
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path += full_name;
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bx::CrtFileReader reader;
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if (!bx::open(&reader, path.c_str()))
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{
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printf("Unable to open effect file %s\n", path.c_str());
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return nullptr;
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}
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int32_t size (bx::getSize(&reader));
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char* data = new char[size + 1];
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bx::read(&reader, reinterpret_cast<void*>(data), size);
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bx::close(&reader);
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data[size] = 0;
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Document document;
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document.Parse<kParseCommentsFlag>(data);
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delete [] data;
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if (document.HasParseError()) {
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std::string error(GetParseError_En(document.GetParseError()));
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printf("Unable to parse effect %s. Errors returned:\n", path.c_str());
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printf("%s\n", error.c_str());
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return nullptr;
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}
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bgfx_effect* effect = effect_reader::read_from_value(document, "Effect '" + name + "': ", m_shaders);
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if (effect == nullptr) {
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printf("Unable to load effect %s\n", path.c_str());
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return nullptr;
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}
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m_effects[name] = effect;
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return effect;
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}
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