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// Copyright 2023 Dolphin Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "VideoCommon/Assets/ShaderAsset.h"
#include <algorithm>
#include <array>
#include <string_view>
#include <utility>
#include "Common/Logging/Log.h"
#include "Common/StringUtil.h"
#include "VideoCommon/Assets/CustomAssetLibrary.h"
namespace VideoCommon
{
bool ParseShaderProperties(const VideoCommon::CustomAssetLibrary::AssetID& asset_id,
const picojson::array& properties_data,
std::map<std::string, VideoCommon::ShaderProperty>* shader_properties)
{
if (!shader_properties) [[unlikely]]
return false;
for (const auto& property_data : properties_data)
{
VideoCommon::ShaderProperty property;
if (!property_data.is<picojson::object>())
{
ERROR_LOG_FMT(VIDEO, "Asset '{}' failed to parse json, property is not the right json type",
asset_id);
return false;
}
const auto& property_data_obj = property_data.get<picojson::object>();
const auto type_iter = property_data_obj.find("type");
if (type_iter == property_data_obj.end())
{
ERROR_LOG_FMT(VIDEO, "Asset '{}' failed to parse json, property entry 'type' not found",
asset_id);
return false;
}
if (!type_iter->second.is<std::string>())
{
ERROR_LOG_FMT(VIDEO,
"Asset '{}' failed to parse json, property entry 'type' is not "
"the right json type",
asset_id);
return false;
}
std::string type = type_iter->second.to_str();
Common::ToLower(&type);
static constexpr std::array<std::pair<std::string_view, ShaderProperty::Type>,
static_cast<int>(ShaderProperty::Type::Type_Max)>
pairs = {{
{"sampler2d", ShaderProperty::Type::Type_Sampler2D},
{"samplercube", ShaderProperty::Type::Type_SamplerCube},
{"samplerarrayshared_main", ShaderProperty::Type::Type_SamplerArrayShared_Main},
{"samplerarrayshared_additional",
ShaderProperty::Type::Type_SamplerArrayShared_Additional},
{"int", ShaderProperty::Type::Type_Int},
{"int2", ShaderProperty::Type::Type_Int2},
{"int3", ShaderProperty::Type::Type_Int3},
{"int4", ShaderProperty::Type::Type_Int4},
{"float", ShaderProperty::Type::Type_Float},
{"float2", ShaderProperty::Type::Type_Float2},
{"float3", ShaderProperty::Type::Type_Float3},
{"float4", ShaderProperty::Type::Type_Float4},
{"rgb", ShaderProperty::Type::Type_RGB},
{"rgba", ShaderProperty::Type::Type_RGBA},
{"bool", ShaderProperty::Type::Type_Bool},
}};
if (const auto it = std::find_if(pairs.begin(), pairs.end(),
[&](const auto& pair) { return pair.first == type; });
it != pairs.end())
{
property.m_type = it->second;
}
else
{
ERROR_LOG_FMT(VIDEO,
"Asset '{}' failed to parse json, property entry type '{}' is "
"an invalid option",
asset_id, type_iter->second.to_str());
return false;
}
const auto description_iter = property_data_obj.find("description");
if (description_iter == property_data_obj.end())
{
ERROR_LOG_FMT(VIDEO,
"Asset '{}' failed to parse json, property entry 'description' not found",
asset_id);
return false;
}
if (!description_iter->second.is<std::string>())
{
ERROR_LOG_FMT(VIDEO,
"Asset '{}' failed to parse json, property entry 'description' is not "
"the right json type",
asset_id);
return false;
}
property.m_description = description_iter->second.to_str();
const auto code_name_iter = property_data_obj.find("code_name");
if (code_name_iter == property_data_obj.end())
{
ERROR_LOG_FMT(VIDEO, "Asset '{}' failed to parse json, property entry 'code_name' not found",
asset_id);
return false;
}
if (!code_name_iter->second.is<std::string>())
{
ERROR_LOG_FMT(VIDEO,
"Asset '{}' failed to parse json, property entry 'code_name' is not "
"the right json type",
asset_id);
return false;
}
shader_properties->try_emplace(code_name_iter->second.to_str(), std::move(property));
}
return true;
}
bool PixelShaderData::FromJson(const VideoCommon::CustomAssetLibrary::AssetID& asset_id,
const picojson::object& json, PixelShaderData* data)
{
const auto properties_iter = json.find("properties");
if (properties_iter == json.end())
{
ERROR_LOG_FMT(VIDEO, "Asset '{}' failed to parse json, 'properties' not found", asset_id);
return false;
}
if (!properties_iter->second.is<picojson::array>())
{
ERROR_LOG_FMT(VIDEO, "Asset '{}' failed to parse json, 'properties' is not the right json type",
asset_id);
return false;
}
const auto& properties_array = properties_iter->second.get<picojson::array>();
if (!ParseShaderProperties(asset_id, properties_array, &data->m_properties))
return false;
for (const auto& [name, property] : data->m_properties)
{
if (data->m_shader_source.find(name) == std::string::npos)
{
ERROR_LOG_FMT(
VIDEO,
"Asset '{}' failed to parse json, the code name '{}' defined in the metadata was not "
"found in the shader source",
asset_id, name);
return false;
}
}
return true;
}
CustomAssetLibrary::LoadInfo PixelShaderAsset::LoadImpl(const CustomAssetLibrary::AssetID& asset_id)
{
auto potential_data = std::make_shared<PixelShaderData>();
const auto loaded_info = m_owning_library->LoadPixelShader(asset_id, potential_data.get());
if (loaded_info.m_bytes_loaded == 0)
return {};
{
std::lock_guard lk(m_data_lock);
m_loaded = true;
m_data = std::move(potential_data);
}
return loaded_info;
}
} // namespace VideoCommon
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