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// license:BSD-3-Clause
// copyright-holders:Ryan Holtz
//============================================================
//
// chainentryreader.cpp - BGFX chain entry JSON reader
//
//============================================================
#include <string>
#include "emu.h"
#include "chainentryreader.h"
#include "texturemanager.h"
#include "targetmanager.h"
#include "effectmanager.h"
#include "chainentry.h"
#include "entryuniform.h"
#include "slider.h"
#include "inputpair.h"
#include "entryuniformreader.h"
bgfx_chain_entry* chain_entry_reader::read_from_value(const Value& value, texture_manager& textures, target_manager& targets, effect_manager& effects, std::map<std::string, bgfx_slider*>& sliders)
{
validate_parameters(value);
bgfx_effect* effect = effects.effect(value["effect"].GetString());
std::vector<bgfx_input_pair> inputs;
if (value.HasMember("input"))
{
const Value& input_array = value["input"];
for (UINT32 i = 0; i < input_array.Size(); i++)
{
std::string sampler = input_array[i]["sampler"].GetString();
std::string texture = input_array[i]["texture"].GetString();
inputs.push_back(bgfx_input_pair(i, sampler, texture));
}
}
std::vector<bgfx_entry_uniform*> uniforms;
if (value.HasMember("uniforms"))
{
const Value& uniform_array = value["uniforms"];
for (UINT32 i = 0; i < uniform_array.Size(); i++)
{
uniforms.push_back(entry_uniform_reader::read_from_value(uniform_array[i], effect, sliders));
}
}
std::string output_name = value["output"].GetString();
if (output_name != std::string("backbuffer"))
{
return new bgfx_chain_entry(value["name"].GetString(), effect, inputs, uniforms, targets.target(output_name));
}
else
{
return new bgfx_chain_entry(value["name"].GetString(), effect, inputs, uniforms, nullptr);
}
}
void chain_entry_reader::validate_parameters(const Value& value)
{
assert(value.HasMember("effect"));
assert(value["effect"].IsString());
if (value.HasMember("name"))
{
assert(value["name"].IsString());
}
assert(value.HasMember("effect"));
assert(value["effect"].IsString());
assert(value.HasMember("output"));
assert(value["output"].IsString());
}
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