mirror of
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179 lines
4.4 KiB
C++
179 lines
4.4 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/Contains.h"
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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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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 Common::Contains(qualifiers, value);
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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 Common::Contains(built_in, value);
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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::ranges::sort(global_result, std::ranges::greater{},
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[](const std::string& s) { return s.size(); });
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return global_result;
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}
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} // namespace
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void CustomPipeline::UpdatePixelData(std::shared_ptr<VideoCommon::CustomAssetLibrary>,
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std::span<const u32>,
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const VideoCommon::CustomAssetLibrary::AssetID&)
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{
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}
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