mirror of
https://github.com/holub/mame
synced 2025-04-19 07:00:31 +03:00
f5b75b7439
* -bgfx: Improved stability when encountering missing files, and improved multi-window stability. [Ryan Holtz] * -osd: Added video-init fallback functionality to other OSDs. [Ryan Holtz]
117 lines
2.8 KiB
C++
117 lines
2.8 KiB
C++
// license:BSD-3-Clause
|
|
// copyright-holders:Ryan Holtz
|
|
//============================================================
|
|
//
|
|
// effectmanager.cpp - BGFX shader effect manager
|
|
//
|
|
// Maintains a string-to-entry lookup of BGFX shader
|
|
// effects, defined by effect.h and read by effectreader.h
|
|
//
|
|
//============================================================
|
|
|
|
#include <rapidjson/document.h>
|
|
#include <rapidjson/error/en.h>
|
|
|
|
#include <bx/readerwriter.h>
|
|
#include <bx/file.h>
|
|
|
|
#include "emu.h"
|
|
|
|
#include <bgfx/bgfx.h>
|
|
|
|
#include "effectmanager.h"
|
|
#include "effectreader.h"
|
|
#include "effect.h"
|
|
|
|
static bool prepare_effect_document(std::string &name, osd_options &options, rapidjson::Document &document)
|
|
{
|
|
std::string full_name = name;
|
|
if (full_name.length() < 5 || (full_name.compare(full_name.length() - 5, 5, ".json") != 0))
|
|
{
|
|
full_name = full_name + ".json";
|
|
}
|
|
|
|
std::string path;
|
|
osd_subst_env(path, util::string_format("%s" PATH_SEPARATOR "effects" PATH_SEPARATOR, options.bgfx_path()));
|
|
path += full_name;
|
|
|
|
bx::FileReader reader;
|
|
if (!bx::open(&reader, path.c_str()))
|
|
{
|
|
osd_printf_error("Unable to open effect file %s\n", path.c_str());
|
|
return false;
|
|
}
|
|
|
|
int32_t size (bx::getSize(&reader));
|
|
char* data = new char[size + 1];
|
|
bx::read(&reader, reinterpret_cast<void*>(data), size);
|
|
bx::close(&reader);
|
|
data[size] = 0;
|
|
|
|
document.Parse<rapidjson::kParseCommentsFlag>(data);
|
|
|
|
delete [] data;
|
|
|
|
if (document.HasParseError())
|
|
{
|
|
std::string error(rapidjson::GetParseError_En(document.GetParseError()));
|
|
osd_printf_error("Unable to parse effect %s. Errors returned:\n", path.c_str());
|
|
osd_printf_error("%s\n", error.c_str());
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
effect_manager::~effect_manager()
|
|
{
|
|
for (std::pair<std::string, bgfx_effect*> effect : m_effects)
|
|
{
|
|
delete effect.second;
|
|
}
|
|
m_effects.clear();
|
|
}
|
|
|
|
bgfx_effect* effect_manager::get_or_load_effect(osd_options &options, std::string name)
|
|
{
|
|
std::map<std::string, bgfx_effect*>::iterator iter = m_effects.find(name);
|
|
if (iter != m_effects.end())
|
|
{
|
|
return iter->second;
|
|
}
|
|
|
|
return load_effect(options, name);
|
|
}
|
|
|
|
bgfx_effect* effect_manager::load_effect(osd_options &options, std::string name)
|
|
{
|
|
rapidjson::Document document;
|
|
if (!prepare_effect_document(name, options, document))
|
|
{
|
|
return nullptr;
|
|
}
|
|
|
|
bgfx_effect* effect = effect_reader::read_from_value(document, "Effect '" + name + "': ", options, m_shaders);
|
|
|
|
if (effect == nullptr)
|
|
{
|
|
osd_printf_error("Unable to load effect %s\n", name.c_str());
|
|
return nullptr;
|
|
}
|
|
|
|
m_effects[name] = effect;
|
|
|
|
return effect;
|
|
}
|
|
|
|
bool effect_manager::validate_effect(osd_options &options, std::string name)
|
|
{
|
|
rapidjson::Document document;
|
|
if (!prepare_effect_document(name, options, document))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
return effect_reader::validate_value(document, "Effect '" + name + "': ", options);
|
|
}
|