411 lines
14 KiB
C++
411 lines
14 KiB
C++
// Copyright 2024 Dolphin Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include "VideoCommon/GraphicsModSystem/Runtime/CustomPipeline.h"
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#include <algorithm>
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#include <array>
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#include <variant>
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#include "Common/Logging/Log.h"
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#include "Common/VariantUtil.h"
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#include "VideoCommon/AbstractGfx.h"
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#include "VideoCommon/Assets/CustomAssetLoader.h"
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namespace
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{
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bool IsQualifier(std::string_view value)
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{
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static constexpr std::array<std::string_view, 7> qualifiers = {
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"attribute", "const", "highp", "lowp", "mediump", "uniform", "varying",
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};
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return std::find(qualifiers.begin(), qualifiers.end(), value) != qualifiers.end();
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}
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bool IsBuiltInMacro(std::string_view value)
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{
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static constexpr std::array<std::string_view, 5> built_in = {
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"__LINE__", "__FILE__", "__VERSION__", "GL_core_profile", "GL_compatibility_profile",
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};
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return std::find(built_in.begin(), built_in.end(), value) != built_in.end();
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}
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std::vector<std::string> GlobalConflicts(std::string_view source)
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{
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std::string_view last_identifier = "";
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std::vector<std::string> global_result;
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u32 scope = 0;
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for (u32 i = 0; i < source.size(); i++)
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{
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// If we're out of global scope, we don't care
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// about any of the details
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if (scope > 0)
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{
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if (source[i] == '{')
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{
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scope++;
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}
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else if (source[i] == '}')
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{
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scope--;
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}
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continue;
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}
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const auto parse_identifier = [&]() {
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const u32 start = i;
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for (; i < source.size(); i++)
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{
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if (!Common::IsAlpha(source[i]) && source[i] != '_' && !std::isdigit(source[i]))
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break;
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}
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u32 end = i;
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i--; // unwind
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return source.substr(start, end - start);
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};
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if (Common::IsAlpha(source[i]) || source[i] == '_')
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{
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const std::string_view identifier = parse_identifier();
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if (IsQualifier(identifier))
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continue;
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if (IsBuiltInMacro(identifier))
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continue;
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last_identifier = identifier;
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}
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else if (source[i] == '#')
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{
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const auto parse_until_end_of_preprocessor = [&]() {
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bool continue_until_next_newline = false;
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for (; i < source.size(); i++)
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{
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if (source[i] == '\n')
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{
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if (continue_until_next_newline)
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continue_until_next_newline = false;
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else
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break;
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}
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else if (source[i] == '\\')
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{
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continue_until_next_newline = true;
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}
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}
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};
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i++;
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const std::string_view identifier = parse_identifier();
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if (identifier == "define")
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{
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i++;
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// skip whitespace
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while (source[i] == ' ')
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{
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i++;
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}
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global_result.emplace_back(parse_identifier());
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parse_until_end_of_preprocessor();
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}
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else
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{
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parse_until_end_of_preprocessor();
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}
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}
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else if (source[i] == '{')
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{
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scope++;
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}
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else if (source[i] == '(')
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{
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// Unlikely the user will be using layouts but...
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if (last_identifier == "layout")
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continue;
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// Since we handle equality, we can assume the identifier
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// before '(' is a function definition
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global_result.emplace_back(last_identifier);
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}
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else if (source[i] == '=')
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{
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global_result.emplace_back(last_identifier);
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i++;
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for (; i < source.size(); i++)
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{
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if (source[i] == ';')
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break;
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}
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}
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else if (source[i] == '/')
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{
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if ((i + 1) >= source.size())
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continue;
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if (source[i + 1] == '/')
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{
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// Go to end of line...
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for (; i < source.size(); i++)
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{
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if (source[i] == '\n')
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break;
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}
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}
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else if (source[i + 1] == '*')
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{
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// Multiline, look for first '*/'
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for (; i < source.size(); i++)
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{
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if (source[i] == '/' && source[i - 1] == '*')
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break;
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}
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}
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}
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}
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// Sort the conflicts from largest to smallest string
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// this way we can ensure smaller strings that are a substring
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// of the larger string are able to be replaced appropriately
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std::sort(global_result.begin(), global_result.end(),
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[](const std::string& first, const std::string& second) {
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return first.size() > second.size();
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});
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return global_result;
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}
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} // namespace
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void CustomPipeline::UpdatePixelData(
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VideoCommon::CustomAssetLoader& loader,
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std::shared_ptr<VideoCommon::CustomAssetLibrary> library, std::span<const u32> texture_units,
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const VideoCommon::CustomAssetLibrary::AssetID& material_to_load)
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{
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if (!m_pixel_material.m_asset || material_to_load != m_pixel_material.m_asset->GetAssetId())
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{
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m_pixel_material.m_asset = loader.LoadMaterial(material_to_load, library);
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}
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const auto material_data = m_pixel_material.m_asset->GetData();
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if (!material_data)
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{
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return;
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}
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std::size_t max_material_data_size = 0;
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if (m_pixel_material.m_asset->GetLastLoadedTime() > m_pixel_material.m_cached_write_time)
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{
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m_last_generated_material_code = ShaderCode{};
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m_pixel_material.m_cached_write_time = m_pixel_material.m_asset->GetLastLoadedTime();
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std::size_t texture_count = 0;
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for (const auto& property : material_data->properties)
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{
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max_material_data_size += VideoCommon::MaterialProperty::GetMemorySize(property);
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VideoCommon::MaterialProperty::WriteAsShaderCode(m_last_generated_material_code, property);
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if (std::holds_alternative<VideoCommon::CustomAssetLibrary::AssetID>(property.m_value))
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{
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texture_count++;
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}
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}
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m_material_data.resize(max_material_data_size);
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m_game_textures.resize(texture_count);
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}
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if (!m_pixel_shader.m_asset ||
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m_pixel_shader.m_asset->GetLastLoadedTime() > m_pixel_shader.m_cached_write_time ||
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material_data->shader_asset != m_pixel_shader.m_asset->GetAssetId())
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{
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m_pixel_shader.m_asset = loader.LoadPixelShader(material_data->shader_asset, library);
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m_pixel_shader.m_cached_write_time = m_pixel_shader.m_asset->GetLastLoadedTime();
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m_last_generated_shader_code = ShaderCode{};
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}
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const auto shader_data = m_pixel_shader.m_asset->GetData();
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if (!shader_data)
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{
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return;
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}
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if (shader_data->m_properties.size() != material_data->properties.size())
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{
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return;
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}
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u8* material_buffer = m_material_data.data();
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u32 sampler_index = 8;
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for (std::size_t index = 0; index < material_data->properties.size(); index++)
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{
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auto& property = material_data->properties[index];
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const auto shader_it = shader_data->m_properties.find(property.m_code_name);
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if (shader_it == shader_data->m_properties.end())
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{
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ERROR_LOG_FMT(VIDEO,
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"Custom pipeline, has material asset '{}' that uses a "
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"code name of '{}' but that can't be found on shader asset '{}'!",
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m_pixel_material.m_asset->GetAssetId(), property.m_code_name,
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m_pixel_shader.m_asset->GetAssetId());
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return;
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}
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if (auto* texture_asset_id =
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std::get_if<VideoCommon::CustomAssetLibrary::AssetID>(&property.m_value))
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{
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if (*texture_asset_id != "")
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{
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auto asset = loader.LoadGameTexture(*texture_asset_id, library);
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if (!asset)
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{
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return;
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}
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auto& texture_asset = m_game_textures[index];
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if (!texture_asset ||
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texture_asset->m_cached_asset.m_asset->GetLastLoadedTime() >
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texture_asset->m_cached_asset.m_cached_write_time ||
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*texture_asset_id != texture_asset->m_cached_asset.m_asset->GetAssetId())
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{
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if (!texture_asset)
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{
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texture_asset = CachedTextureAsset{};
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}
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const auto loaded_time = asset->GetLastLoadedTime();
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texture_asset->m_cached_asset = VideoCommon::CachedAsset<VideoCommon::GameTextureAsset>{
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std::move(asset), loaded_time};
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texture_asset->m_texture.reset();
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if (std::holds_alternative<VideoCommon::ShaderProperty::Sampler2D>(
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shader_it->second.m_default))
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{
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texture_asset->m_sampler_code =
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fmt::format("SAMPLER_BINDING({}) uniform sampler2D samp_{};\n", sampler_index,
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property.m_code_name);
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texture_asset->m_define_code = fmt::format("#define HAS_{} 1\n", property.m_code_name);
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}
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else if (std::holds_alternative<VideoCommon::ShaderProperty::Sampler2DArray>(
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shader_it->second.m_default))
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{
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texture_asset->m_sampler_code =
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fmt::format("SAMPLER_BINDING({}) uniform sampler2DArray samp_{};\n", sampler_index,
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property.m_code_name);
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texture_asset->m_define_code = fmt::format("#define HAS_{} 1\n", property.m_code_name);
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}
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else if (std::holds_alternative<VideoCommon::ShaderProperty::SamplerCube>(
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shader_it->second.m_default))
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{
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texture_asset->m_sampler_code =
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fmt::format("SAMPLER_BINDING({}) uniform samplerCube samp_{};\n", sampler_index,
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property.m_code_name);
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texture_asset->m_define_code = fmt::format("#define HAS_{} 1\n", property.m_code_name);
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}
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}
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const auto texture_data = texture_asset->m_cached_asset.m_asset->GetData();
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if (!texture_data)
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{
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return;
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}
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if (texture_asset->m_texture)
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{
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g_gfx->SetTexture(sampler_index, texture_asset->m_texture.get());
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g_gfx->SetSamplerState(sampler_index, texture_data->m_sampler);
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}
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else
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{
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AbstractTextureType texture_type = AbstractTextureType::Texture_2DArray;
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if (std::holds_alternative<VideoCommon::ShaderProperty::SamplerCube>(
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shader_it->second.m_default))
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{
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texture_type = AbstractTextureType::Texture_CubeMap;
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}
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else if (std::holds_alternative<VideoCommon::ShaderProperty::Sampler2D>(
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shader_it->second.m_default))
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{
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texture_type = AbstractTextureType::Texture_2D;
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}
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if (texture_data->m_texture.m_slices.empty() ||
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texture_data->m_texture.m_slices[0].m_levels.empty())
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{
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return;
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}
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auto& first_slice = texture_data->m_texture.m_slices[0];
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const TextureConfig texture_config(
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first_slice.m_levels[0].width, first_slice.m_levels[0].height,
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static_cast<u32>(first_slice.m_levels.size()),
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static_cast<u32>(texture_data->m_texture.m_slices.size()), 1,
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first_slice.m_levels[0].format, 0, texture_type);
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texture_asset->m_texture = g_gfx->CreateTexture(
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texture_config, fmt::format("Custom shader texture '{}'", property.m_code_name));
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if (texture_asset->m_texture)
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{
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for (std::size_t slice_index = 0; slice_index < texture_data->m_texture.m_slices.size();
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slice_index++)
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{
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auto& slice = texture_data->m_texture.m_slices[slice_index];
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for (u32 level_index = 0; level_index < static_cast<u32>(slice.m_levels.size());
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++level_index)
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{
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auto& level = slice.m_levels[level_index];
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texture_asset->m_texture->Load(level_index, level.width, level.height,
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level.row_length, level.data.data(),
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level.data.size(), static_cast<u32>(slice_index));
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}
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}
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}
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}
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sampler_index++;
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}
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}
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else
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{
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VideoCommon::MaterialProperty::WriteToMemory(material_buffer, property);
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}
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}
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if (m_last_generated_shader_code.GetBuffer().empty())
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{
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// Calculate shader details
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std::string color_shader_data =
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ReplaceAll(shader_data->m_shader_source, "custom_main", CUSTOM_PIXELSHADER_COLOR_FUNC);
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const auto global_conflicts = GlobalConflicts(color_shader_data);
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color_shader_data = ReplaceAll(color_shader_data, "\r\n", "\n");
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color_shader_data = ReplaceAll(color_shader_data, "{", "{{");
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color_shader_data = ReplaceAll(color_shader_data, "}", "}}");
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// First replace global conflicts with dummy strings
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// This avoids the problem where a shorter word
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// is in a longer word, ex two functions: 'execute' and 'execute_fast'
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for (std::size_t i = 0; i < global_conflicts.size(); i++)
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{
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const std::string& identifier = global_conflicts[i];
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color_shader_data =
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ReplaceAll(color_shader_data, identifier, fmt::format("_{0}_DOLPHIN_TEMP_{0}_", i));
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}
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// Now replace the temporaries with the actual value
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for (std::size_t i = 0; i < global_conflicts.size(); i++)
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{
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const std::string& identifier = global_conflicts[i];
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color_shader_data = ReplaceAll(color_shader_data, fmt::format("_{0}_DOLPHIN_TEMP_{0}_", i),
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fmt::format("{}_{{0}}", identifier));
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}
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for (const auto& game_texture : m_game_textures)
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{
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if (!game_texture)
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continue;
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m_last_generated_shader_code.Write("{}", game_texture->m_sampler_code);
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m_last_generated_shader_code.Write("{}", game_texture->m_define_code);
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}
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for (std::size_t i = 0; i < texture_units.size(); i++)
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{
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const auto& texture_unit = texture_units[i];
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m_last_generated_shader_code.Write(
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"#define TEX_COORD{} data.texcoord[data.texmap_to_texcoord_index[{}]].xy\n", i,
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texture_unit);
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}
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m_last_generated_shader_code.Write("{}", color_shader_data);
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}
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}
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