// license:BSD-3-Clause // copyright-holders:Ryan Holtz //============================================================ // // paramreader.cpp - BGFX shader parameter JSON reader // //============================================================ #include #include "paramreader.h" #include "parameter.h" #include "frameparameter.h" #include "windowparameter.h" #include "timeparameter.h" const parameter_reader::string_to_enum parameter_reader::TYPE_NAMES[parameter_reader::TYPE_COUNT] = { { "frame", bgfx_parameter::parameter_type::PARAM_FRAME }, { "window", bgfx_parameter::parameter_type::PARAM_WINDOW }, { "time", bgfx_parameter::parameter_type::PARAM_TIME } }; bgfx_parameter* parameter_reader::read_from_value(const Value& value, std::string prefix, uint32_t window_index) { if (!validate_parameters(value, prefix)) { return nullptr; } std::string name = value["name"].GetString(); bgfx_parameter::parameter_type type = bgfx_parameter::parameter_type(get_enum_from_value(value, "type", bgfx_parameter::parameter_type::PARAM_FRAME, TYPE_NAMES, TYPE_COUNT)); if (type == bgfx_parameter::parameter_type::PARAM_FRAME) { uint32_t period = int(value["period"].GetDouble()); return new bgfx_frame_parameter(name, type, period); } else if (type == bgfx_parameter::parameter_type::PARAM_WINDOW) { return new bgfx_window_parameter(name, type, window_index); } else if (type == bgfx_parameter::parameter_type::PARAM_TIME) { float limit = float(value["limit"].GetDouble()); return new bgfx_time_parameter(name, type, limit); } else { READER_CHECK(false, (prefix + "Unknown parameter type '" + std::string(value["type"].GetString()) + "'\n").c_str()); } return nullptr; } bool parameter_reader::validate_parameters(const Value& value, std::string prefix) { if (!READER_CHECK(value.HasMember("name"), (prefix + "Must have string value 'name'\n").c_str())) return false; if (!READER_CHECK(value["name"].IsString(), (prefix + "Value 'name' must be a string\n").c_str())) return false; if (!READER_CHECK(value.HasMember("type"), (prefix + "Must have string value 'type'\n").c_str())) return false; if (!READER_CHECK(value["type"].IsString(), (prefix + "Value 'type' must be a string\n").c_str())) return false; if (!READER_CHECK(!value.HasMember("period") || value["period"].IsNumber(), (prefix + "Value 'period' must be numeric\n").c_str())) return false; if (!READER_CHECK(!value.HasMember("limit") || value["limit"].IsNumber(), (prefix + "Value 'period' must be numeric\n").c_str())) return false; return true; }