mirror of
https://github.com/Blinue/Magpie.git
synced 2026-06-24 02:04:10 +00:00
594 lines
17 KiB
C++
594 lines
17 KiB
C++
#include "pch.h"
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#include "EffectDrawer.h"
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#include "App.h"
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#include "Utils.h"
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#include <VertexTypes.h>
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#include "EffectCompiler.h"
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#include "TextureLoader.h"
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#include "StrUtils.h"
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#ifdef _UNICODE
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#undef _UNICODE
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// Conan 的 muparser 不含 UNICODE 支持
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#include <muParser.h>
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#define _UNICODE
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#else
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#include <muParser.h>
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#endif
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extern std::shared_ptr<spdlog::logger> logger;
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// 所有 EffectDrawer 共享一个实例
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static mu::Parser exprParser;
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void SetExprVars(SIZE inputSize, SIZE outputSize) {
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assert(inputSize.cx > 0 && inputSize.cy > 0);
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static double inputWidth = 0;
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static double inputHeight = 0;
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static double inputPtX = 0;
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static double inputPtY = 0;
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static double outputWidth = 0;
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static double outputHeight = 0;
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static double outputPtX = 0;
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static double outputPtY = 0;
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static double scaleX = 0;
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static double scaleY = 0;
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static bool init = false;
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if (!init) {
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init = true;
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exprParser.DefineVar("INPUT_WIDTH", &inputWidth);
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exprParser.DefineVar("INPUT_HEIGHT", &inputHeight);
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exprParser.DefineVar("INPUT_PT_X", &inputPtX);
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exprParser.DefineVar("INPUT_PT_Y", &inputPtY);
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exprParser.DefineVar("OUTPUT_WIDTH", &outputWidth);
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exprParser.DefineVar("OUTPUT_HEIGHT", &outputHeight);
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exprParser.DefineVar("OUTPUT_PT_X", &outputPtX);
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exprParser.DefineVar("OUTPUT_PT_Y", &outputPtY);
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exprParser.DefineVar("SCALE_X", &scaleX);
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exprParser.DefineVar("SCALE_Y", &scaleY);
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}
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inputWidth = inputSize.cx;
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inputHeight = inputSize.cy;
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inputPtX = 1.0f / inputSize.cx;
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inputPtY = 1.0f / inputSize.cy;
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outputWidth = outputSize.cx;
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outputHeight = outputSize.cy;
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outputPtX = 1.0f / outputSize.cx;
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outputPtY = 1.0f / outputSize.cy;
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scaleX = inputPtX * outputWidth;
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scaleY = inputPtY * outputHeight;
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}
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void SetExprDynamicVars(int frameCount, double cursorX, double cursorY) {
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static double frameCount_ = 0;
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static double cursorX_ = 0;
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static double cursorY_ = 0;
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static bool init = false;
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if (!init) {
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init = true;
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exprParser.DefineVar("FRAME_COUNT", &frameCount_);
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exprParser.DefineVar("CURSOR_X", &cursorX_);
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exprParser.DefineVar("CURSOR_Y", &cursorY_);
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}
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frameCount_ = frameCount;
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cursorX_ = cursorX;
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cursorY_ = cursorY;
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}
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EffectDrawer::EffectDrawer(const EffectDrawer& other) {
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_d3dDevice = other._d3dDevice;
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_d3dDC = other._d3dDC;
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_samplers = other._samplers;
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_textures = other._textures;
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_constNamesMap = other._constNamesMap;
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_constants = other._constants;
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_constantBuffer = other._constantBuffer;
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_vertexShader = other._vertexShader;
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_outputSize = other._outputSize;
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_effectDesc = other._effectDesc;
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_passes = other._passes;
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for (_Pass& pass : _passes) {
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pass.SetParent(this);
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}
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}
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EffectDrawer::EffectDrawer(EffectDrawer&& other) noexcept {
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_d3dDevice = std::move(other._d3dDevice);
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_d3dDC = std::move(other._d3dDC);
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_samplers = std::move(other._samplers);
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_textures = std::move(other._textures);
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_constNamesMap = std::move(other._constNamesMap);
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_constants = std::move(other._constants);
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_constantBuffer = std::move(other._constantBuffer);
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_vertexShader = std::move(other._vertexShader);
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_outputSize = std::move(other._outputSize);
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_effectDesc = std::move(other._effectDesc);
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_passes = std::move(other._passes);
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for (_Pass& pass : _passes) {
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pass.SetParent(this);
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}
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}
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bool EffectDrawer::Initialize(const wchar_t* fileName) {
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bool result = false;
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int duration = Utils::Measure([&]() {
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result = !EffectCompiler::Compile(fileName, _effectDesc);
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});
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if (!result) {
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SPDLOG_LOGGER_ERROR(logger, fmt::format("编译 {} 失败", StrUtils::UTF16ToUTF8(fileName)));
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return false;
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} else {
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SPDLOG_LOGGER_INFO(logger, fmt::format("编译 {} 用时 {} 毫秒", StrUtils::UTF16ToUTF8(fileName), duration / 1000.0f));
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}
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Renderer& renderer = App::GetInstance().GetRenderer();
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_d3dDevice = renderer.GetD3DDevice();
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_d3dDC = renderer.GetD3DDC();
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_samplers.resize(_effectDesc.samplers.size());
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for (size_t i = 0; i < _samplers.size(); ++i) {
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EffectSamplerDesc& desc = _effectDesc.samplers[i];
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if (!renderer.GetSampler(desc.filterType, desc.addressType, &_samplers[i])) {
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SPDLOG_LOGGER_ERROR(logger, fmt::format("创建采样器 {} 失败", desc.name));
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return false;
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}
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}
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_passes.resize(_effectDesc.passes.size());
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for (size_t i = 0; i < _passes.size(); ++i) {
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if (!_passes[i].Initialize(this, i)) {
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SPDLOG_LOGGER_ERROR(logger, fmt::format("Pass{} 初始化失败", i + 1));
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return false;
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}
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}
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// 大小必须为 4 的倍数
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_constants.resize((_effectDesc.constants.size() + _effectDesc.valueConstants.size() + 3) / 4 * 4);
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_dynamicConstants.resize((_effectDesc.dynamicValueConstants.size() + 3) / 4 * 4);
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// 设置常量默认值
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for (size_t i = 0; i < _effectDesc.constants.size(); ++i) {
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const auto& c = _effectDesc.constants[i];
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if (c.type == EffectConstantType::Float) {
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_constants[i].floatVal = std::get<float>(c.defaultValue);
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} else {
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_constants[i].intVal = std::get<int>(c.defaultValue);
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}
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}
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// 用于快速查找常量名
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for (UINT i = 0; i < _effectDesc.constants.size(); ++i) {
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_constNamesMap.emplace(_effectDesc.constants[i].name, i);
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}
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return true;
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}
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EffectDrawer::ConstantType EffectDrawer::GetConstantType(std::string_view name) const {
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auto it = _constNamesMap.find(name);
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if (it == _constNamesMap.end()) {
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return ConstantType::NotFound;
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}
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return _effectDesc.constants[it->second].type == EffectConstantType::Float ?
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ConstantType::Float : ConstantType::Int;
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}
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bool EffectDrawer::SetConstant(std::string_view name, float value) {
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auto it = _constNamesMap.find(name);
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if (it == _constNamesMap.end()) {
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return false;
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}
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UINT index = it->second;
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const auto& desc = _effectDesc.constants[index];
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if (desc.type != EffectConstantType::Float) {
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return false;
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}
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if (_constants[index].floatVal == value) {
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return true;
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}
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// 检查是否是合法的值
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if (desc.minValue.index() == 1) {
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if (value < std::get<float>(desc.minValue)) {
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return false;
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}
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}
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if (desc.maxValue.index() == 1) {
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if (value > std::get<float>(desc.maxValue)) {
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return false;
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}
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}
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_constants[index].floatVal = value;
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return true;
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}
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bool EffectDrawer::SetConstant(std::string_view name, int value) {
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auto it = _constNamesMap.find(name);
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if (it == _constNamesMap.end()) {
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return false;
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}
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UINT index = it->second;
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const auto& desc = _effectDesc.constants[index];
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if (desc.type != EffectConstantType::Int) {
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return false;
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}
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if (_constants[index].intVal == value) {
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return true;
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}
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// 检查是否是合法的值
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if (desc.minValue.index() == 2) {
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if (value < std::get<int>(desc.minValue)) {
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return false;
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}
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}
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if (desc.maxValue.index() == 2) {
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if (value > std::get<int>(desc.maxValue)) {
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return false;
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}
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}
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_constants[index].intVal = value;
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return true;
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}
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bool EffectDrawer::CalcOutputSize(SIZE inputSize, SIZE& outputSize) const {
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if (CanSetOutputSize()) {
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outputSize = _outputSize.has_value() ? _outputSize.value() : inputSize;
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return true;
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} else {
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// Effect 已指定输出尺寸
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SetExprVars(inputSize, {});
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try {
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exprParser.SetExpr(_effectDesc.outSizeExpr.first);
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outputSize.cx = std::lround(exprParser.Eval());
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exprParser.SetExpr(_effectDesc.outSizeExpr.second);
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outputSize.cy = std::lround(exprParser.Eval());
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} catch (...) {
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return false;
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}
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return true;
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}
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}
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bool EffectDrawer::CanSetOutputSize() const {
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return _effectDesc.outSizeExpr.first.empty();
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}
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void EffectDrawer::SetOutputSize(SIZE value) {
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_outputSize = value;
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}
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bool EvalConstants(const std::vector<EffectValueConstantDesc>& descs, std::vector<Constant32>& constants, size_t base = 0) {
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for (size_t i = 0; i < descs.size(); ++i) {
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const auto& d = descs[i];
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double value;
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try {
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exprParser.SetExpr(d.valueExpr);
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value = exprParser.Eval();
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} catch (...) {
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SPDLOG_LOGGER_ERROR(logger, fmt::format("计算表达式 {} 失败", d.valueExpr));
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return false;
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}
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if (descs[i].type == EffectConstantType::Float) {
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constants[i + base].floatVal = (float)value;
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} else {
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constants[i + base].intVal = (int)std::lround(value);
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}
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}
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return true;
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}
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bool EffectDrawer::Build(ComPtr<ID3D11Texture2D> input, ComPtr<ID3D11Texture2D> output) {
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D3D11_TEXTURE2D_DESC inputDesc;
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input->GetDesc(&inputDesc);
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SIZE inputSize = { (long)inputDesc.Width, (long)inputDesc.Height };
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SIZE outputSize;
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if (!CalcOutputSize(inputSize, outputSize)) {
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SPDLOG_LOGGER_ERROR(logger, "CalcOutputSize 失败");
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return false;
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}
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SetExprVars(inputSize, outputSize);
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SetExprDynamicVars(0, 0, 0);
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// 创建中间纹理
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_textures.resize(_effectDesc.textures.size() + 1);
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_textures[0] = input;
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for (size_t i = 1; i < _effectDesc.textures.size(); ++i) {
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if (!_effectDesc.textures[i].source.empty()) {
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// 从文件加载纹理
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_textures[i] = TextureLoader::Load((L"effects\\" + StrUtils::UTF8ToUTF16(_effectDesc.textures[i].source)).c_str());
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if (!_textures[i]) {
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SPDLOG_LOGGER_ERROR(logger, fmt::format("加载纹理 {} 失败", _effectDesc.textures[i].source));
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return false;
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}
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} else {
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SIZE texSize{};
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try {
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exprParser.SetExpr(_effectDesc.textures[i].sizeExpr.first);
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texSize.cx = std::lround(exprParser.Eval());
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exprParser.SetExpr(_effectDesc.textures[i].sizeExpr.second);
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texSize.cy = std::lround(exprParser.Eval());
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} catch (const mu::ParserError& e) {
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SPDLOG_LOGGER_ERROR(logger, fmt::format("计算中间纹理尺寸失败：{}", e.GetMsg()));
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return false;
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}
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if (texSize.cx <= 0 || texSize.cy <= 0) {
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SPDLOG_LOGGER_ERROR(logger, "非法的中间纹理尺寸");
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return false;
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}
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D3D11_TEXTURE2D_DESC desc{};
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desc.Format = EffectIntermediateTextureDesc::DXGI_FORMAT_MAP[(UINT)_effectDesc.textures[i].format];
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desc.Width = texSize.cx;
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desc.Height = texSize.cy;
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desc.Usage = D3D11_USAGE_DEFAULT;
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desc.MipLevels = 1;
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desc.ArraySize = 1;
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desc.SampleDesc.Count = 1;
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desc.SampleDesc.Quality = 0;
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desc.BindFlags = D3D11_BIND_SHADER_RESOURCE | D3D11_BIND_RENDER_TARGET;
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HRESULT hr = App::GetInstance().GetRenderer().GetD3DDevice()->CreateTexture2D(
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&desc, nullptr, _textures[i].ReleaseAndGetAddressOf());
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if (FAILED(hr)) {
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SPDLOG_LOGGER_ERROR(logger, MakeComErrorMsg("创建 Texture2D 失败", hr));
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return false;
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}
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}
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}
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_textures.back() = output;
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if (!EvalConstants(_effectDesc.valueConstants, _constants, _effectDesc.constants.size())) {
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SPDLOG_LOGGER_ERROR(logger, "计算常量失败");
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return false;
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}
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// 每帧更新的常量也计算一次，用于检测表达式语法错误
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if (!EvalConstants(_effectDesc.dynamicValueConstants, _dynamicConstants)) {
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SPDLOG_LOGGER_ERROR(logger, "计算动态常量失败");
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return false;
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}
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if (!_constants.empty()) {
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// 创建常量缓冲区
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D3D11_BUFFER_DESC bd{};
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bd.Usage = D3D11_USAGE_DEFAULT;
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bd.ByteWidth = 4 * (UINT)_constants.size();
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bd.BindFlags = D3D11_BIND_CONSTANT_BUFFER;
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D3D11_SUBRESOURCE_DATA initData{};
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initData.pSysMem = _constants.data();
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HRESULT hr = _d3dDevice->CreateBuffer(&bd, &initData, &_constantBuffer);
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if (FAILED(hr)) {
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SPDLOG_LOGGER_ERROR(logger, MakeComErrorMsg("CreateBuffer 失败", hr));
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return false;
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}
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}
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if (!_dynamicConstants.empty()) {
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// 创建每帧更新的常量缓冲区
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D3D11_BUFFER_DESC bd{};
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bd.Usage = D3D11_USAGE_DYNAMIC;
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bd.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
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bd.ByteWidth = 4 * (UINT)_dynamicConstants.size();
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bd.BindFlags = D3D11_BIND_CONSTANT_BUFFER;
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D3D11_SUBRESOURCE_DATA initData{};
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initData.pSysMem = _dynamicConstants.data();
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HRESULT hr = _d3dDevice->CreateBuffer(&bd, &initData, &_dynamicConstantBuffer);
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if (FAILED(hr)) {
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SPDLOG_LOGGER_ERROR(logger, MakeComErrorMsg("CreateBuffer 失败", hr));
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return false;
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}
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}
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for (size_t i = 0; i < _passes.size(); ++i) {
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EffectPassDesc& desc = _effectDesc.passes[i];
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// 为空时表示输出到 OUTPUT
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if (desc.outputs.empty()) {
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desc.outputs.push_back(UINT(_effectDesc.textures.size()));
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}
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if (!_passes[i].Build(i < _passes.size() - 1 ? std::optional<SIZE>() : outputSize)
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) {
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SPDLOG_LOGGER_ERROR(logger, fmt::format("构建 Pass{} 时出错", i + 1));
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return false;
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}
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}
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return true;
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}
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void EffectDrawer::Draw(bool noUpdate) {
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if (_dynamicConstantBuffer) {
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// 更新常量
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if (!EvalConstants(_effectDesc.dynamicValueConstants, _dynamicConstants)) {
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SPDLOG_LOGGER_ERROR(logger, "计算动态常量失败");
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}
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D3D11_MAPPED_SUBRESOURCE ms;
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HRESULT hr = _d3dDC->Map(_dynamicConstantBuffer.Get(), 0, D3D11_MAP_WRITE_DISCARD, 0, &ms);
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if (SUCCEEDED(hr)) {
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std::memcpy(ms.pData, _dynamicConstants.data(), _dynamicConstants.size() * 4);
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_d3dDC->Unmap(_dynamicConstantBuffer.Get(), 0);
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} else {
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SPDLOG_LOGGER_ERROR(logger, MakeComErrorMsg("Map 失败", hr));
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}
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}
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ID3D11Buffer* t[2] = { _constantBuffer.Get(), _dynamicConstantBuffer.Get()};
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if (t[0]) {
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_d3dDC->PSSetConstantBuffers(0, t[1] ? 2 : 1, t);
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} else {
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_d3dDC->PSSetConstantBuffers(0, 0, nullptr);
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}
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_d3dDC->PSSetSamplers(0, (UINT)_samplers.size(), _samplers.data());
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if (noUpdate) {
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// 此帧内容无变化，只渲染最后一个 pass
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_passes.back().Draw();
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} else {
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for (_Pass& pass : _passes) {
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pass.Draw();
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}
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}
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}
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// 所有 Effect 共享 exprParser，每帧渲染前由 Renderer 调用一次
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bool EffectDrawer::UpdateExprDynamicVars() {
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int frameCount = App::GetInstance().GetRenderer().GetTimer().GetFrameCount();
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POINT pt;
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if (!GetCursorPos(&pt)) {
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SPDLOG_LOGGER_ERROR(logger, MakeWin32ErrorMsg("GetCursorPos 失败"));
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return false;
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}
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const RECT& srcFrameRect = App::GetInstance().GetSrcFrameRect();
|
||
|
||
SetExprDynamicVars(
|
||
frameCount,
|
||
double(pt.x - srcFrameRect.left) / (srcFrameRect.right - srcFrameRect.left),
|
||
double(pt.y - srcFrameRect.top) / (srcFrameRect.bottom - srcFrameRect.top)
|
||
);
|
||
return true;
|
||
}
|
||
|
||
|
||
bool EffectDrawer::_Pass::Initialize(EffectDrawer* parent, size_t index) {
|
||
Renderer& renderer = App::GetInstance().GetRenderer();
|
||
_parent = parent;
|
||
_index = index;
|
||
|
||
const EffectPassDesc& passDesc = _parent->_effectDesc.passes[index];
|
||
HRESULT hr = renderer.GetD3DDevice()->CreatePixelShader(
|
||
passDesc.cso->GetBufferPointer(), passDesc.cso->GetBufferSize(), nullptr, &_pixelShader);
|
||
if (FAILED(hr)) {
|
||
SPDLOG_LOGGER_ERROR(logger, MakeComErrorMsg("创建像素着色器失败", hr));
|
||
return false;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
bool EffectDrawer::_Pass::Build(std::optional<SIZE> outputSize) {
|
||
Renderer& renderer = App::GetInstance().GetRenderer();
|
||
const EffectPassDesc& passDesc = _parent->_effectDesc.passes[_index];
|
||
|
||
_inputs.resize(passDesc.inputs.size() * 2);
|
||
// 后半部分留空
|
||
for (size_t i = 0; i < passDesc.inputs.size(); ++i) {
|
||
if (!renderer.GetShaderResourceView(_parent->_textures[passDesc.inputs[i]].Get(), &_inputs[i])) {
|
||
SPDLOG_LOGGER_ERROR(logger,"获取 ShaderResourceView 失败");
|
||
return false;
|
||
}
|
||
}
|
||
|
||
_outputs.resize(passDesc.outputs.size());
|
||
for (size_t i = 0; i < _outputs.size(); ++i) {
|
||
if (!App::GetInstance().GetRenderer().GetRenderTargetView(_parent->_textures[passDesc.outputs[i]].Get(), &_outputs[i])) {
|
||
SPDLOG_LOGGER_ERROR(logger, "获取 RenderTargetView 失败");
|
||
return false;
|
||
}
|
||
}
|
||
|
||
D3D11_TEXTURE2D_DESC desc;
|
||
_parent->_textures[passDesc.outputs[0]]->GetDesc(&desc);
|
||
SIZE outputTextureSize = { (LONG)desc.Width, (LONG)desc.Height };
|
||
|
||
_vp.Width = (float)outputTextureSize.cx;
|
||
_vp.Height = (float)outputTextureSize.cy;
|
||
_vp.MinDepth = 0.0f;
|
||
_vp.MaxDepth = 1.0f;
|
||
|
||
// 创建顶点缓冲区
|
||
float outputLeft, outputTop, outputRight, outputBottom;
|
||
if (outputSize.has_value() && (outputTextureSize.cx != outputSize->cx || outputTextureSize.cy != outputSize->cy)) {
|
||
outputLeft = std::floorf(((float)outputTextureSize.cx - outputSize->cx) / 2) * 2 / outputTextureSize.cx - 1;
|
||
outputTop = 1 - std::floorf(((float)outputTextureSize.cy - outputSize->cy) / 2) * 2 / outputTextureSize.cy;
|
||
outputRight = outputLeft + 2 * outputSize->cx / (float)outputTextureSize.cx;
|
||
outputBottom = outputTop - 2 * outputSize->cy / (float)outputTextureSize.cy;
|
||
|
||
VertexPositionTexture vertices[] = {
|
||
{ XMFLOAT3(outputLeft, outputTop, 0.5f), XMFLOAT2(0.0f, 0.0f) },
|
||
{ XMFLOAT3(outputRight, outputTop, 0.5f), XMFLOAT2(1.0f, 0.0f) },
|
||
{ XMFLOAT3(outputLeft, outputBottom, 0.5f), XMFLOAT2(0.0f, 1.0f) },
|
||
{ XMFLOAT3(outputRight, outputBottom, 0.5f), XMFLOAT2(1.0f, 1.0f) }
|
||
};
|
||
D3D11_BUFFER_DESC bd = {};
|
||
bd.Usage = D3D11_USAGE_DEFAULT;
|
||
bd.ByteWidth = sizeof(vertices);
|
||
bd.BindFlags = D3D11_BIND_VERTEX_BUFFER;
|
||
|
||
D3D11_SUBRESOURCE_DATA InitData = {};
|
||
InitData.pSysMem = vertices;
|
||
HRESULT hr = renderer.GetD3DDevice()->CreateBuffer(&bd, &InitData, &_vtxBuffer);
|
||
if (FAILED(hr)) {
|
||
SPDLOG_LOGGER_ERROR(logger, MakeComErrorMsg("创建顶点缓冲区失败", hr));
|
||
return false;
|
||
}
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
void EffectDrawer::_Pass::Draw() {
|
||
ComPtr<ID3D11DeviceContext> d3dDC = _parent->_d3dDC;
|
||
|
||
d3dDC->OMSetRenderTargets((UINT)_outputs.size(), _outputs.data(), nullptr);
|
||
d3dDC->RSSetViewports(1, &_vp);
|
||
|
||
d3dDC->PSSetShader(_pixelShader.Get(), nullptr, 0);
|
||
|
||
UINT nInputs = (UINT)(_inputs.size() / 2);
|
||
d3dDC->PSSetShaderResources(0, nInputs, _inputs.data());
|
||
|
||
if (_vtxBuffer) {
|
||
App::GetInstance().GetRenderer().SetSimpleVS(_vtxBuffer.Get());
|
||
d3dDC->Draw(4, 0);
|
||
} else {
|
||
App::GetInstance().GetRenderer().SetFillVS();
|
||
d3dDC->Draw(3, 0);
|
||
}
|
||
|
||
d3dDC->PSSetShaderResources(0, nInputs, _inputs.data() + nInputs);
|
||
}
|