// license:BSD-3-Clause // copyright-holders:Ryan Holtz //============================================================ // // paramreader.cpp - BGFX shader parameter JSON reader // //============================================================ #include "paramreader.h" #include "chainmanager.h" #include "frameparameter.h" #include "parameter.h" #include "timeparameter.h" #include "windowparameter.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, const std::string &prefix, chain_manager& chains) { 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(std::move(name), type, period); } else if (type == bgfx_parameter::parameter_type::PARAM_WINDOW) { return new bgfx_window_parameter(std::move(name), type, chains.window_index()); } else if (type == bgfx_parameter::parameter_type::PARAM_TIME) { auto limit = float(value["limit"].GetDouble()); return new bgfx_time_parameter(std::move(name), type, limit); } else { READER_CHECK(false, "%sUnknown parameter type '%s'\n", prefix, value["type"].GetString()); } return nullptr; } bool parameter_reader::validate_parameters(const Value& value, const std::string &prefix) { if (!READER_CHECK(value.HasMember("name"), "%sMust have string value 'name'\n", prefix)) return false; if (!READER_CHECK(value["name"].IsString(), "%sValue 'name' must be a string\n", prefix)) return false; if (!READER_CHECK(value.HasMember("type"), "%sMust have string value 'type'\n", prefix)) return false; if (!READER_CHECK(value["type"].IsString(), "%sValue 'type' must be a string\n", prefix)) return false; if (!READER_CHECK(!value.HasMember("period") || value["period"].IsNumber(), "%sValue 'period' must be numeric\n", prefix)) return false; if (!READER_CHECK(!value.HasMember("limit") || value["limit"].IsNumber(), "%sValue 'period' must be numeric\n", prefix)) return false; return true; }