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https://github.com/dolphin-emu/dolphin.git
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VideoCommon: update shader asset to provide a variant default value
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@ -4,19 +4,176 @@
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#include "VideoCommon/Assets/ShaderAsset.h"
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#include <algorithm>
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#include <array>
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#include <string_view>
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#include <utility>
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#include "Common/Logging/Log.h"
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#include "Common/StringUtil.h"
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#include "Common/VariantUtil.h"
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#include "VideoCommon/Assets/CustomAssetLibrary.h"
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namespace VideoCommon
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{
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static bool ParseShaderProperties(const CustomAssetLibrary::AssetID& asset_id,
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const picojson::array& properties_data,
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std::map<std::string, ShaderProperty>* shader_properties)
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template <typename ElementType, std::size_t ElementCount, typename PropertyType>
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bool ParseNumeric(const CustomAssetLibrary::AssetID& asset_id, const picojson::value& json_value,
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std::string_view code_name, PropertyType* value)
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{
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static_assert(ElementCount <= 4, "Numeric data expected to be four elements or less");
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if constexpr (ElementCount == 1)
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{
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if (!json_value.is<double>())
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{
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ERROR_LOG_FMT(VIDEO,
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"Asset id '{}' shader has attribute '{}' where "
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"a double was expected but not provided.",
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asset_id, code_name);
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return false;
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}
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*value = static_cast<ElementType>(json_value.get<double>());
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}
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else
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{
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if (!json_value.is<picojson::array>())
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{
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ERROR_LOG_FMT(VIDEO,
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"Asset id '{}' shader has attribute '{}' where "
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"an array was expected but not provided.",
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asset_id, code_name);
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return false;
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}
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const auto json_data = json_value.get<picojson::array>();
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if (json_data.size() != ElementCount)
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{
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ERROR_LOG_FMT(VIDEO,
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"Asset id '{}' shader has attribute '{}' with incorrect number "
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"of elements, expected {}",
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asset_id, code_name, ElementCount);
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return false;
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}
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if (!std::all_of(json_data.begin(), json_data.end(),
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[](const picojson::value& v) { return v.is<double>(); }))
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{
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ERROR_LOG_FMT(VIDEO,
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"Asset id '{}' shader has attribute '{}' where "
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"all elements are not of type double.",
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asset_id, code_name);
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return false;
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}
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std::array<ElementType, ElementCount> data;
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for (std::size_t i = 0; i < ElementCount; i++)
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{
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data[i] = static_cast<ElementType>(json_data[i].get<double>());
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}
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*value = std::move(data);
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}
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return true;
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}
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static bool ParseShaderValue(const CustomAssetLibrary::AssetID& asset_id,
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const picojson::value& json_value, std::string_view code_name,
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std::string_view type, ShaderProperty::Value* value)
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{
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if (type == "int")
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{
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return ParseNumeric<s32, 1>(asset_id, json_value, code_name, value);
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}
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else if (type == "int2")
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{
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return ParseNumeric<s32, 2>(asset_id, json_value, code_name, value);
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}
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else if (type == "int3")
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{
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return ParseNumeric<s32, 3>(asset_id, json_value, code_name, value);
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}
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else if (type == "int4")
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{
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return ParseNumeric<s32, 4>(asset_id, json_value, code_name, value);
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}
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else if (type == "float")
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{
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return ParseNumeric<float, 1>(asset_id, json_value, code_name, value);
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}
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else if (type == "float2")
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{
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return ParseNumeric<float, 2>(asset_id, json_value, code_name, value);
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}
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else if (type == "float3")
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{
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return ParseNumeric<float, 3>(asset_id, json_value, code_name, value);
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}
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else if (type == "float4")
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{
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return ParseNumeric<float, 4>(asset_id, json_value, code_name, value);
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}
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else if (type == "rgb")
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{
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ShaderProperty::RGB rgb;
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if (!ParseNumeric<float, 3>(asset_id, json_value, code_name, &rgb.value))
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return false;
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*value = std::move(rgb);
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return true;
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}
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else if (type == "rgba")
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{
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ShaderProperty::RGBA rgba;
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if (!ParseNumeric<float, 4>(asset_id, json_value, code_name, &rgba.value))
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return false;
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*value = std::move(rgba);
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return true;
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}
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else if (type == "bool")
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{
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if (json_value.is<bool>())
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{
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*value = json_value.get<bool>();
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return true;
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}
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}
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else if (type == "sampler2d")
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{
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if (json_value.is<std::string>())
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{
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ShaderProperty::Sampler2D sampler2d;
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sampler2d.value = json_value.get<std::string>();
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*value = std::move(sampler2d);
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return true;
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}
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}
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else if (type == "sampler2darray")
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{
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if (json_value.is<std::string>())
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{
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ShaderProperty::Sampler2DArray sampler2darray;
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sampler2darray.value = json_value.get<std::string>();
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*value = std::move(sampler2darray);
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return true;
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}
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}
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else if (type == "samplercube")
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{
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if (json_value.is<std::string>())
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{
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ShaderProperty::SamplerCube samplercube;
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samplercube.value = json_value.get<std::string>();
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*value = std::move(samplercube);
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return true;
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}
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}
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ERROR_LOG_FMT(VIDEO, "Asset '{}' failed to parse the json, value is not valid for type '{}'",
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asset_id, type);
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return false;
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}
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static bool
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ParseShaderProperties(const VideoCommon::CustomAssetLibrary::AssetID& asset_id,
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const picojson::array& properties_data,
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std::map<std::string, VideoCommon::ShaderProperty>* shader_properties)
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{
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if (!shader_properties) [[unlikely]]
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return false;
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@ -50,41 +207,6 @@ static bool ParseShaderProperties(const CustomAssetLibrary::AssetID& asset_id,
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std::string type = type_iter->second.to_str();
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Common::ToLower(&type);
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static constexpr std::array<std::pair<std::string_view, ShaderProperty::Type>,
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static_cast<int>(ShaderProperty::Type::Type_Max)>
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pairs = {{
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{"sampler2d", ShaderProperty::Type::Type_Sampler2D},
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{"samplercube", ShaderProperty::Type::Type_SamplerCube},
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{"samplerarrayshared_main", ShaderProperty::Type::Type_SamplerArrayShared_Main},
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{"samplerarrayshared_additional",
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ShaderProperty::Type::Type_SamplerArrayShared_Additional},
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{"int", ShaderProperty::Type::Type_Int},
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{"int2", ShaderProperty::Type::Type_Int2},
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{"int3", ShaderProperty::Type::Type_Int3},
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{"int4", ShaderProperty::Type::Type_Int4},
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{"float", ShaderProperty::Type::Type_Float},
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{"float2", ShaderProperty::Type::Type_Float2},
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{"float3", ShaderProperty::Type::Type_Float3},
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{"float4", ShaderProperty::Type::Type_Float4},
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{"rgb", ShaderProperty::Type::Type_RGB},
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{"rgba", ShaderProperty::Type::Type_RGBA},
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{"bool", ShaderProperty::Type::Type_Bool},
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}};
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if (const auto it = std::find_if(pairs.begin(), pairs.end(),
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[&](const auto& pair) { return pair.first == type; });
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it != pairs.end())
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{
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property.m_type = it->second;
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}
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else
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{
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ERROR_LOG_FMT(VIDEO,
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"Asset '{}' failed to parse json, property entry type '{}' is "
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"an invalid option",
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asset_id, type_iter->second.to_str());
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return false;
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}
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const auto description_iter = property_data_obj.find("description");
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if (description_iter == property_data_obj.end())
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{
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@ -118,7 +240,18 @@ static bool ParseShaderProperties(const CustomAssetLibrary::AssetID& asset_id,
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asset_id);
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return false;
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}
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shader_properties->try_emplace(code_name_iter->second.to_str(), std::move(property));
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std::string code_name = code_name_iter->second.to_str();
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const auto default_iter = property_data_obj.find("default");
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if (default_iter != property_data_obj.end())
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{
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if (!ParseShaderValue(asset_id, default_iter->second, code_name, type, &property.m_default))
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{
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return false;
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}
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}
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shader_properties->try_emplace(std::move(code_name), std::move(property));
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}
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return true;
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