mirror of
https://github.com/Blinue/Magpie.git
synced 2026-06-24 02:04:10 +00:00
865 lines
24 KiB
C++
865 lines
24 KiB
C++
#include "pch.h"
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#include "Renderer.h"
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#include "App.h"
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#include "Utils.h"
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#include "StrUtils.h"
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#include <VertexTypes.h>
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#include "EffectCompiler.h"
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#include <rapidjson/document.h>
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extern std::shared_ptr<spdlog::logger> logger;
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bool Renderer::Initialize() {
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if (!_InitD3D()) {
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SPDLOG_LOGGER_ERROR(logger, "_InitD3D 失败");
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return false;
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}
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if (!_CreateSwapChain()) {
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SPDLOG_LOGGER_ERROR(logger, "_CreateSwapChain 失败");
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return false;
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}
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int frameRate = App::GetInstance().GetFrameRate();
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if (frameRate > 0) {
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_timer.SetFixedTimeStep(true);
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_timer.SetTargetElapsedSeconds(1.0 / frameRate);
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} else {
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_timer.SetFixedTimeStep(false);
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}
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_timer.ResetElapsedTime();
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return true;
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}
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bool Renderer::InitializeEffectsAndCursor(const std::string& effectsJson) {
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RECT destRect;
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if (!_ResolveEffectsJson(effectsJson, destRect)) {
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SPDLOG_LOGGER_ERROR(logger, "_ResolveEffectsJson 失败");
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return false;
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}
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if (App::GetInstance().IsShowFPS()) {
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if (!_frameRateDrawer.Initialize(_backBuffer, destRect)) {
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SPDLOG_LOGGER_ERROR(logger, "初始化 FrameRateDrawer 失败");
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return false;
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}
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}
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if (!_cursorDrawer.Initialize(_backBuffer, destRect)) {
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SPDLOG_LOGGER_ERROR(logger, "初始化 CursorDrawer 失败");
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return false;
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}
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return true;
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}
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void Renderer::Render() {
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if (_waitingForNextFrame) {
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_Render();
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} else {
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_timer.Tick(std::bind(&Renderer::_Render, this));
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}
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}
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bool Renderer::GetRenderTargetView(ID3D11Texture2D* texture, ID3D11RenderTargetView** result) {
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auto it = _rtvMap.find(texture);
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if (it != _rtvMap.end()) {
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*result = it->second.Get();
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return true;
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}
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ComPtr<ID3D11RenderTargetView>& r = _rtvMap[texture];
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HRESULT hr = _d3dDevice->CreateRenderTargetView(texture, nullptr, &r);
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if (FAILED(hr)) {
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SPDLOG_LOGGER_ERROR(logger, MakeComErrorMsg("CreateRenderTargetView 失败", hr));
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return false;
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} else {
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*result = r.Get();
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return true;
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}
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}
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bool Renderer::GetShaderResourceView(ID3D11Texture2D* texture, ID3D11ShaderResourceView** result) {
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auto it = _srvMap.find(texture);
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if (it != _srvMap.end()) {
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*result = it->second.Get();
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return true;
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}
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ComPtr<ID3D11ShaderResourceView>& r = _srvMap[texture];
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HRESULT hr = _d3dDevice->CreateShaderResourceView(texture, nullptr, &r);
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if (FAILED(hr)) {
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SPDLOG_LOGGER_ERROR(logger, MakeComErrorMsg("CreateShaderResourceView 失败", hr));
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return false;
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} else {
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*result = r.Get();
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return true;
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}
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}
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bool Renderer::SetFillVS() {
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if (!_fillVS) {
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const char* src = "void m(uint i:SV_VERTEXID,out float4 p:SV_POSITION,out float2 c:TEXCOORD){c=float2(i&1,i>>1)*2;p=float4(c.x*2-1,-c.y*2+1,0,1);}";
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ComPtr<ID3DBlob> blob;
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if (!CompileShader(true, src, "m", &blob, "FillVS")) {
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SPDLOG_LOGGER_ERROR(logger, "编译 FillVS 失败");
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return false;
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}
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HRESULT hr = _d3dDevice->CreateVertexShader(blob->GetBufferPointer(), blob->GetBufferSize(), nullptr, &_fillVS);
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if (FAILED(hr)) {
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SPDLOG_LOGGER_ERROR(logger, MakeComErrorMsg("创建 FillVS 失败", hr));
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return false;
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}
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}
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_d3dDC->IASetInputLayout(nullptr);
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_d3dDC->IASetVertexBuffers(0, 0, nullptr, nullptr, nullptr);
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_d3dDC->VSSetShader(_fillVS.Get(), nullptr, 0);
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return true;
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}
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bool Renderer::SetCopyPS(ID3D11SamplerState* sampler, ID3D11ShaderResourceView* input) {
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if (!_copyPS) {
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const char* src = "Texture2D t:register(t0);SamplerState s:register(s0);float4 m(float4 p:SV_POSITION,float2 c:TEXCOORD):SV_Target{return t.Sample(s,c);}";
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ComPtr<ID3DBlob> blob;
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if (!CompileShader(false, src, "m", &blob, "CopyPS")) {
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SPDLOG_LOGGER_ERROR(logger, "编译 CopyPS 失败");
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return false;
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}
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HRESULT hr = _d3dDevice->CreatePixelShader(blob->GetBufferPointer(), blob->GetBufferSize(), nullptr, &_copyPS);
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if (FAILED(hr)) {
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SPDLOG_LOGGER_ERROR(logger, MakeComErrorMsg("创建 CopyPS 失败", hr));
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return false;
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}
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}
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_d3dDC->PSSetShader(_copyPS.Get(), nullptr, 0);
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_d3dDC->PSSetConstantBuffers(0, 0, nullptr);
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_d3dDC->PSSetShaderResources(0, 1, &input);
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_d3dDC->PSSetSamplers(0, 1, &sampler);
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return true;
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}
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bool Renderer::SetSimpleVS(ID3D11Buffer* simpleVB) {
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if (!_simpleVS) {
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const char* src = "void m(float4 p:SV_POSITION,float2 c:TEXCOORD,out float4 q:SV_POSITION,out float2 d:TEXCOORD) {q=p;d=c;}";
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ComPtr<ID3DBlob> blob;
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if (!CompileShader(true, src, "m", &blob, "SimpleVS")) {
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SPDLOG_LOGGER_ERROR(logger, "编译 SimpleVS 失败");
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return false;
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}
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HRESULT hr = _d3dDevice->CreateVertexShader(blob->GetBufferPointer(), blob->GetBufferSize(), nullptr, &_simpleVS);
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if (FAILED(hr)) {
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SPDLOG_LOGGER_ERROR(logger, MakeComErrorMsg("创建 SimpleVS 失败", hr));
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return false;
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}
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hr = _d3dDevice->CreateInputLayout(
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VertexPositionTexture::InputElements,
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VertexPositionTexture::InputElementCount,
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blob->GetBufferPointer(),
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blob->GetBufferSize(),
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&_simpleIL
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);
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if (FAILED(hr)) {
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SPDLOG_LOGGER_ERROR(logger, MakeComErrorMsg("创建 SimpleVS 输入布局失败", hr));
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return false;
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}
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}
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_d3dDC->IASetInputLayout(_simpleIL.Get());
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UINT stride = sizeof(VertexPositionTexture);
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UINT offset = 0;
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_d3dDC->IASetVertexBuffers(0, 1, &simpleVB, &stride, &offset);
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_d3dDC->VSSetShader(_simpleVS.Get(), nullptr, 0);
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return true;
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}
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#ifdef _DEBUG
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// Check for SDK Layer support.
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bool SdkLayersAvailable() noexcept {
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HRESULT hr = D3D11CreateDevice(
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nullptr,
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D3D_DRIVER_TYPE_NULL, // There is no need to create a real hardware device.
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nullptr,
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D3D11_CREATE_DEVICE_DEBUG, // Check for the SDK layers.
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nullptr, // Any feature level will do.
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0,
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D3D11_SDK_VERSION,
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nullptr, // No need to keep the D3D device reference.
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nullptr, // No need to know the feature level.
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nullptr // No need to keep the D3D device context reference.
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);
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return SUCCEEDED(hr);
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}
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#endif
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inline void LogAdapter(const DXGI_ADAPTER_DESC1& adapterDesc) {
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SPDLOG_LOGGER_INFO(logger, fmt::format("当前图形适配器：\n\tVendorId：{:#x}\n\tDeviceId：{:#x}\n\t描述：{}",
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adapterDesc.VendorId, adapterDesc.DeviceId, StrUtils::UTF16ToUTF8(adapterDesc.Description)));
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}
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bool GetGraphicsAdapter(IDXGIFactory1* dxgiFactory, UINT adapterIdx, ComPtr<IDXGIAdapter1>& adapter) {
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HRESULT hr = dxgiFactory->EnumAdapters1(adapterIdx, adapter.ReleaseAndGetAddressOf());
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if (SUCCEEDED(hr)) {
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DXGI_ADAPTER_DESC1 desc;
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HRESULT hr = adapter->GetDesc1(&desc);
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if (FAILED(hr)) {
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return false;
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}
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LogAdapter(desc);
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return true;
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}
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// 指定 GPU 失败，回落到普通方式
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ComPtr<IDXGIAdapter1> warpAdapter;
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DXGI_ADAPTER_DESC1 warpDesc;
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for (UINT adapterIndex = 0;
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SUCCEEDED(dxgiFactory->EnumAdapters1(adapterIndex,
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adapter.ReleaseAndGetAddressOf()));
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adapterIndex++
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) {
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DXGI_ADAPTER_DESC1 desc;
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HRESULT hr = adapter->GetDesc1(&desc);
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if (FAILED(hr)) {
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return false;
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}
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if (desc.Flags == DXGI_ADAPTER_FLAG_SOFTWARE) {
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warpAdapter = adapter;
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warpDesc = desc;
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continue;
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}
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LogAdapter(desc);
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return true;
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}
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// 回落到 Basic Render Driver Adapter（WARP）
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// https://docs.microsoft.com/en-us/windows/win32/direct3darticles/directx-warp
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if (warpAdapter) {
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LogAdapter(warpDesc);
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adapter = warpAdapter;
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return true;
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} else {
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return false;
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}
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}
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bool Renderer::CompileShader(bool isVS, std::string_view hlsl, const char* entryPoint,
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ID3DBlob** blob, const char* sourceName, ID3DInclude* include
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) {
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ComPtr<ID3DBlob> errorMsgs = nullptr;
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UINT flags = D3DCOMPILE_ENABLE_STRICTNESS;
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const char* target;
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if (isVS) {
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target = _featureLevel >= D3D_FEATURE_LEVEL_11_0 ? "vs_5_0" :
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(_featureLevel == D3D_FEATURE_LEVEL_10_1 ? "vs_4_1" : "vs_4_0");
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} else {
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target = _featureLevel >= D3D_FEATURE_LEVEL_11_0 ? "ps_5_0" :
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(_featureLevel == D3D_FEATURE_LEVEL_10_1 ? "ps_4_1" : "ps_4_0");
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}
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HRESULT hr = D3DCompile(hlsl.data(), hlsl.size(), sourceName, nullptr, include,
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entryPoint, target, flags, 0, blob, &errorMsgs);
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if (FAILED(hr)) {
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if (errorMsgs) {
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SPDLOG_LOGGER_ERROR(logger, MakeComErrorMsg(fmt::format("编译{}着色器失败：{}",
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isVS ? "顶点" : "像素", (const char*)errorMsgs->GetBufferPointer()), hr));
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}
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return false;
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} else {
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if (errorMsgs) {
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// 显示警告消息
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SPDLOG_LOGGER_WARN(logger, fmt::format("编译{}着色器时产生警告：{}",
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isVS ? "顶点" : "像素", (const char*)errorMsgs->GetBufferPointer()));
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}
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}
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return true;
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}
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bool Renderer::_InitD3D() {
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HRESULT hr = CreateDXGIFactory1(IID_PPV_ARGS(_dxgiFactory.ReleaseAndGetAddressOf()));
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if (FAILED(hr)) {
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return false;
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}
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// 检查可变帧率支持
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BOOL supportTearing = FALSE;
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ComPtr<IDXGIFactory5> dxgiFactory5;
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hr = _dxgiFactory.As<IDXGIFactory5>(&dxgiFactory5);
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if (FAILED(hr)) {
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SPDLOG_LOGGER_WARN(logger, MakeComErrorMsg("获取 IDXGIFactory5 失败", hr));
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} else {
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hr = dxgiFactory5->CheckFeatureSupport(DXGI_FEATURE_PRESENT_ALLOW_TEARING, &supportTearing, sizeof(supportTearing));
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if (FAILED(hr)) {
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SPDLOG_LOGGER_WARN(logger, MakeComErrorMsg("CheckFeatureSupport 失败", hr));
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}
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}
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SPDLOG_LOGGER_INFO(logger, fmt::format("可变刷新率支持：{}", supportTearing ? "是" : "否"));
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if (App::GetInstance().GetFrameRate() != 0 && !supportTearing) {
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SPDLOG_LOGGER_ERROR(logger, "当前显示器不支持可变刷新率");
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App::GetInstance().SetErrorMsg(ErrorMessages::VSYNC_OFF_NOT_SUPPORTED);
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return false;
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}
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UINT createDeviceFlags = D3D11_CREATE_DEVICE_BGRA_SUPPORT;
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#ifdef _DEBUG
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createDeviceFlags |= D3D11_CREATE_DEVICE_DEBUG;
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if (SdkLayersAvailable()) {
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// 在 DEBUG 配置启用调试层
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createDeviceFlags |= D3D11_CREATE_DEVICE_DEBUG;
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} else {
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SPDLOG_LOGGER_INFO(logger, "D3D11 调试层不可用");
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}
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#endif
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D3D_FEATURE_LEVEL featureLevels[] = {
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D3D_FEATURE_LEVEL_11_1,
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D3D_FEATURE_LEVEL_11_0,
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D3D_FEATURE_LEVEL_10_1,
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D3D_FEATURE_LEVEL_10_0,
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// 不支持功能级别 9.x，但这里加上没坏处
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D3D_FEATURE_LEVEL_9_3,
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D3D_FEATURE_LEVEL_9_2,
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D3D_FEATURE_LEVEL_9_1,
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};
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UINT nFeatureLevels = ARRAYSIZE(featureLevels);
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ComPtr<IDXGIAdapter1> adapter;
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if (!GetGraphicsAdapter(_dxgiFactory.Get(), App::GetInstance().GetAdapterIdx(), adapter)) {
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SPDLOG_LOGGER_ERROR(logger, "找不到可用 Adapter");
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return false;
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}
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ComPtr<ID3D11Device> d3dDevice;
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ComPtr<ID3D11DeviceContext> d3dDC;
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hr = D3D11CreateDevice(
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adapter.Get(),
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D3D_DRIVER_TYPE_UNKNOWN,
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nullptr,
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createDeviceFlags,
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featureLevels,
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nFeatureLevels,
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D3D11_SDK_VERSION,
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&d3dDevice,
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&_featureLevel,
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&d3dDC
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);
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if (FAILED(hr)) {
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SPDLOG_LOGGER_WARN(logger, "D3D11CreateDevice 失败");
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return false;
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}
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std::string_view fl;
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switch (_featureLevel) {
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case D3D_FEATURE_LEVEL_11_1:
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fl = "11.1";
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break;
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case D3D_FEATURE_LEVEL_11_0:
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fl = "11.0";
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break;
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case D3D_FEATURE_LEVEL_10_1:
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fl = "10.1";
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break;
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case D3D_FEATURE_LEVEL_10_0:
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fl = "10.0";
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break;
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case D3D_FEATURE_LEVEL_9_3:
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fl = "9.3";
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break;
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case D3D_FEATURE_LEVEL_9_2:
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fl = "9.2";
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break;
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case D3D_FEATURE_LEVEL_9_1:
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fl = "9.1";
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break;
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default:
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fl = "未知";
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break;
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}
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SPDLOG_LOGGER_INFO(logger, fmt::format("已创建 D3D Device\n\t功能级别：{}", fl));
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hr = d3dDevice.As<ID3D11Device1>(&_d3dDevice);
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if (FAILED(hr)) {
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SPDLOG_LOGGER_ERROR(logger, MakeComErrorMsg("获取 ID3D11Device1 失败", hr));
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return false;
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}
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|
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hr = d3dDC.As<ID3D11DeviceContext1>(&_d3dDC);
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if (FAILED(hr)) {
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SPDLOG_LOGGER_ERROR(logger, MakeComErrorMsg("获取 ID3D11DeviceContext1 失败", hr));
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return false;
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}
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hr = _d3dDevice.As<IDXGIDevice1>(&_dxgiDevice);
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if (FAILED(hr)) {
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SPDLOG_LOGGER_ERROR(logger, MakeComErrorMsg("获取 IDXGIDevice 失败", hr));
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return false;
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}
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// 将 GPU 优先级设为最高，不一定有用
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hr = _dxgiDevice->SetGPUThreadPriority(7);
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if (FAILED(hr)) {
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SPDLOG_LOGGER_ERROR(logger, MakeComErrorMsg("SetGPUThreadPriority", hr));
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}
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return true;
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}
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bool Renderer::_CreateSwapChain() {
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const RECT& hostWndRect = App::GetInstance().GetHostWndRect();
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DXGI_SWAP_CHAIN_DESC1 sd = {};
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sd.Width = hostWndRect.right - hostWndRect.left;
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sd.Height = hostWndRect.bottom - hostWndRect.top;
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sd.Format = DXGI_FORMAT_B8G8R8A8_UNORM;
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sd.AlphaMode = DXGI_ALPHA_MODE_IGNORE;
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sd.SampleDesc.Count = 1;
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sd.SampleDesc.Quality = 0;
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sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT | DXGI_USAGE_SHADER_INPUT;
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sd.BufferCount = (App::GetInstance().IsDisableLowLatency() && App::GetInstance().GetFrameRate() == 0) ? 3 : 2;
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sd.SwapEffect = DXGI_SWAP_EFFECT_FLIP_DISCARD;
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sd.Flags = App::GetInstance().GetFrameRate() != 0 ? DXGI_SWAP_CHAIN_FLAG_ALLOW_TEARING : DXGI_SWAP_CHAIN_FLAG_FRAME_LATENCY_WAITABLE_OBJECT;
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|
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ComPtr<IDXGISwapChain1> dxgiSwapChain = nullptr;
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||
HRESULT hr = _dxgiFactory->CreateSwapChainForHwnd(
|
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_d3dDevice.Get(),
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App::GetInstance().GetHwndHost(),
|
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&sd,
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nullptr,
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nullptr,
|
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&dxgiSwapChain
|
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);
|
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if (FAILED(hr)) {
|
||
SPDLOG_LOGGER_ERROR(logger, MakeComErrorMsg("创建交换链失败", hr));
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return false;
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}
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hr = dxgiSwapChain.As<IDXGISwapChain2>(&_dxgiSwapChain);
|
||
if (FAILED(hr)) {
|
||
SPDLOG_LOGGER_ERROR(logger, MakeComErrorMsg("获取 IDXGISwapChain2 失败", hr));
|
||
return false;
|
||
}
|
||
|
||
if (App::GetInstance().GetFrameRate() != 0) {
|
||
hr = _dxgiDevice->SetMaximumFrameLatency(1);
|
||
if (FAILED(hr)) {
|
||
SPDLOG_LOGGER_ERROR(logger, MakeComErrorMsg("SetMaximumFrameLatency 失败", hr));
|
||
}
|
||
} else {
|
||
// 关闭低延迟模式时将最大延迟设为 2 以使 CPU 和 GPU 并行执行
|
||
_dxgiSwapChain->SetMaximumFrameLatency(App::GetInstance().IsDisableLowLatency() ? 2 : 1);
|
||
|
||
_frameLatencyWaitableObject.reset(_dxgiSwapChain->GetFrameLatencyWaitableObject());
|
||
if (!_frameLatencyWaitableObject) {
|
||
SPDLOG_LOGGER_ERROR(logger, "GetFrameLatencyWaitableObject 失败");
|
||
return false;
|
||
}
|
||
}
|
||
|
||
hr = _dxgiFactory->MakeWindowAssociation(App::GetInstance().GetHwndHost(), DXGI_MWA_NO_ALT_ENTER);
|
||
if (FAILED(hr)) {
|
||
SPDLOG_LOGGER_ERROR(logger, MakeComErrorMsg("MakeWindowAssociation 失败", hr));
|
||
}
|
||
|
||
// 检查 Multiplane Overlay 和 Hardware Composition 支持
|
||
BOOL supportMPO = FALSE;
|
||
BOOL supportHardwareComposition = FALSE;
|
||
ComPtr<IDXGIOutput> output;
|
||
hr = _dxgiSwapChain->GetContainingOutput(&output);
|
||
if (FAILED(hr)) {
|
||
SPDLOG_LOGGER_WARN(logger, MakeComErrorMsg("获取 IDXGIOutput 失败", hr));
|
||
} else {
|
||
ComPtr<IDXGIOutput2> output2;
|
||
hr = output.As<IDXGIOutput2>(&output2);
|
||
if (FAILED(hr)) {
|
||
SPDLOG_LOGGER_WARN(logger, MakeComErrorMsg("获取 IDXGIOutput2 失败", hr));
|
||
} else {
|
||
supportMPO = output2->SupportsOverlays();
|
||
}
|
||
|
||
ComPtr<IDXGIOutput6> output6;
|
||
hr = output.As<IDXGIOutput6>(&output6);
|
||
if (FAILED(hr)) {
|
||
SPDLOG_LOGGER_WARN(logger, MakeComErrorMsg("获取 IDXGIOutput6 失败", hr));
|
||
} else {
|
||
UINT flags;
|
||
hr = output6->CheckHardwareCompositionSupport(&flags);
|
||
if (FAILED(hr)) {
|
||
SPDLOG_LOGGER_WARN(logger, MakeComErrorMsg("CheckHardwareCompositionSupport 失败", hr));
|
||
} else {
|
||
supportHardwareComposition = flags & DXGI_HARDWARE_COMPOSITION_SUPPORT_FLAG_WINDOWED;
|
||
}
|
||
}
|
||
}
|
||
|
||
SPDLOG_LOGGER_INFO(logger, fmt::format("Hardware Composition 支持：{}", supportHardwareComposition ? "是" : "否"));
|
||
SPDLOG_LOGGER_INFO(logger, fmt::format("Multiplane Overlay 支持：{}", supportMPO ? "是" : "否"));
|
||
|
||
hr = _dxgiSwapChain->GetBuffer(0, IID_PPV_ARGS(_backBuffer.ReleaseAndGetAddressOf()));
|
||
if (FAILED(hr)) {
|
||
SPDLOG_LOGGER_ERROR(logger, MakeComErrorMsg("获取后缓冲区失败", hr));
|
||
return false;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
void Renderer::_Render() {
|
||
int frameRate = App::GetInstance().GetFrameRate();
|
||
|
||
if (!_waitingForNextFrame && frameRate == 0) {
|
||
WaitForSingleObjectEx(_frameLatencyWaitableObject.get(), 1000, TRUE);
|
||
}
|
||
|
||
if (!_CheckSrcState()) {
|
||
SPDLOG_LOGGER_INFO(logger, "源窗口状态改变，退出全屏");
|
||
App::GetInstance().Close();
|
||
return;
|
||
}
|
||
|
||
_waitingForNextFrame = !App::GetInstance().GetFrameSource().Update();
|
||
if (_waitingForNextFrame) {
|
||
return;
|
||
}
|
||
|
||
_d3dDC->ClearState();
|
||
// 所有渲染都使用三角形带拓扑
|
||
_d3dDC->IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_TRIANGLESTRIP);
|
||
|
||
for (EffectDrawer& effect : _effects) {
|
||
effect.Draw();
|
||
}
|
||
|
||
if (App::GetInstance().IsShowFPS()) {
|
||
_frameRateDrawer.Draw();
|
||
}
|
||
|
||
_cursorDrawer.Draw();
|
||
|
||
if (frameRate != 0) {
|
||
_dxgiSwapChain->Present(0, DXGI_PRESENT_ALLOW_TEARING);
|
||
} else {
|
||
_dxgiSwapChain->Present(1, 0);
|
||
}
|
||
}
|
||
|
||
bool Renderer::_CheckSrcState() {
|
||
HWND hwndSrc = App::GetInstance().GetHwndSrc();
|
||
if (GetForegroundWindow() != hwndSrc) {
|
||
SPDLOG_LOGGER_INFO(logger, "前台窗口已改变");
|
||
return false;
|
||
}
|
||
|
||
if (Utils::GetWindowShowCmd(hwndSrc) != SW_NORMAL) {
|
||
SPDLOG_LOGGER_INFO(logger, "源窗口显示状态改变");
|
||
return false;
|
||
}
|
||
|
||
RECT rect = Utils::GetClientScreenRect(App::GetInstance().GetHwndSrcClient());
|
||
if (App::GetInstance().GetSrcClientRect() != rect) {
|
||
SPDLOG_LOGGER_INFO(logger, "源窗口位置或大小改变");
|
||
return false;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
bool Renderer::_ResolveEffectsJson(const std::string& effectsJson, RECT& destRect) {
|
||
_effectInput = App::GetInstance().GetFrameSource().GetOutput();
|
||
D3D11_TEXTURE2D_DESC inputDesc;
|
||
_effectInput->GetDesc(&inputDesc);
|
||
|
||
const RECT& hostWndRect = App::GetInstance().GetHostWndRect();
|
||
SIZE hostSize = { hostWndRect.right - hostWndRect.left,hostWndRect.bottom - hostWndRect.top };
|
||
|
||
rapidjson::Document doc;
|
||
if (doc.Parse(effectsJson.c_str(), effectsJson.size()).HasParseError()) {
|
||
// 解析 json 失败
|
||
return false;
|
||
}
|
||
|
||
if (!doc.IsArray()) {
|
||
return false;
|
||
}
|
||
|
||
std::vector<SIZE> texSizes;
|
||
texSizes.push_back({ (LONG)inputDesc.Width, (LONG)inputDesc.Height });
|
||
|
||
const auto& effectsArr = doc.GetArray();
|
||
_effects.reserve(effectsArr.Size());
|
||
texSizes.reserve(static_cast<size_t>(effectsArr.Size()) + 1);
|
||
|
||
// 不得为空
|
||
if (effectsArr.Empty()) {
|
||
return false;
|
||
}
|
||
|
||
for (const auto& effectJson : effectsArr) {
|
||
if (!effectJson.IsObject()) {
|
||
return false;
|
||
}
|
||
|
||
EffectDrawer& effect = _effects.emplace_back();
|
||
|
||
auto effectName = effectJson.FindMember("effect");
|
||
if (effectName == effectJson.MemberEnd() || !effectName->value.IsString()) {
|
||
// 未找到 effect 属性或该属性不合法
|
||
return false;
|
||
}
|
||
|
||
if (!effect.Initialize((L"effects\\" + StrUtils::UTF8ToUTF16(effectName->value.GetString()) + L".hlsl").c_str())) {
|
||
return false;
|
||
}
|
||
|
||
if (effect.CanSetOutputSize()) {
|
||
// scale 属性可用
|
||
auto scaleProp = effectJson.FindMember("scale");
|
||
if (scaleProp != effectJson.MemberEnd()) {
|
||
if (!scaleProp->value.IsArray()) {
|
||
return false;
|
||
}
|
||
|
||
// scale 属性的值为两个元素组成的数组
|
||
// [+, +]：缩放比例
|
||
// [0, 0]：非等比例缩放到屏幕大小
|
||
// [-, -]：相对于屏幕能容纳的最大等比缩放的比例
|
||
|
||
const auto& scale = scaleProp->value.GetArray();
|
||
if (scale.Size() != 2 || !scale[0].IsNumber() || !scale[1].IsNumber()) {
|
||
return false;
|
||
}
|
||
|
||
float scaleX = scale[0].GetFloat();
|
||
float scaleY = scale[1].GetFloat();
|
||
|
||
static float DELTA = 1e-5f;
|
||
|
||
SIZE outputSize = texSizes.back();;
|
||
|
||
if (scaleX >= DELTA) {
|
||
if (scaleY < DELTA) {
|
||
return false;
|
||
}
|
||
|
||
outputSize = { std::lroundf(outputSize.cx * scaleX), std::lroundf(outputSize.cy * scaleY) };
|
||
} else if (std::abs(scaleX) < DELTA) {
|
||
if (std::abs(scaleY) >= DELTA) {
|
||
return false;
|
||
}
|
||
|
||
outputSize = hostSize;
|
||
} else {
|
||
if (scaleY > -DELTA) {
|
||
return false;
|
||
}
|
||
|
||
float fillScale = std::min(float(hostSize.cx) / outputSize.cx, float(hostSize.cy) / outputSize.cy);
|
||
outputSize = {
|
||
std::lroundf(outputSize.cx * fillScale * -scaleX),
|
||
std::lroundf(outputSize.cy * fillScale * -scaleY)
|
||
};
|
||
}
|
||
|
||
effect.SetOutputSize(outputSize);
|
||
}
|
||
}
|
||
|
||
for (const auto& prop : effectJson.GetObject()) {
|
||
if (!prop.name.IsString()) {
|
||
return false;
|
||
}
|
||
|
||
std::string_view name = prop.name.GetString();
|
||
|
||
if (name == "effect" || (effect.CanSetOutputSize() && name == "scale")) {
|
||
continue;
|
||
} else {
|
||
auto type = effect.GetConstantType(name);
|
||
if (type == EffectDrawer::ConstantType::Float) {
|
||
if (!prop.value.IsNumber()) {
|
||
return false;
|
||
}
|
||
|
||
if (!effect.SetConstant(name, prop.value.GetFloat())) {
|
||
return false;
|
||
}
|
||
} else if (type == EffectDrawer::ConstantType::Int) {
|
||
int value;
|
||
if (prop.value.IsInt()) {
|
||
value = prop.value.GetInt();
|
||
} else if (prop.value.IsBool()) {
|
||
// bool 值视为 int
|
||
value = (int)prop.value.GetBool();
|
||
} else {
|
||
return false;
|
||
}
|
||
|
||
if (!effect.SetConstant(name, value)) {
|
||
return false;
|
||
}
|
||
} else {
|
||
return false;
|
||
}
|
||
}
|
||
}
|
||
|
||
SIZE& outputSize = texSizes.emplace_back();
|
||
if (!effect.CalcOutputSize(texSizes[texSizes.size() - 2], outputSize)) {
|
||
return false;
|
||
}
|
||
}
|
||
|
||
if (_effects.size() == 1) {
|
||
if (!_effects.back().Build(_effectInput, _backBuffer)) {
|
||
return false;
|
||
}
|
||
} else {
|
||
// 创建效果间的中间纹理
|
||
ComPtr<ID3D11Texture2D> curTex = _effectInput;
|
||
|
||
D3D11_TEXTURE2D_DESC desc{};
|
||
desc.Format = DXGI_FORMAT_B8G8R8A8_UNORM;
|
||
desc.Usage = D3D11_USAGE_DEFAULT;
|
||
desc.MipLevels = 1;
|
||
desc.ArraySize = 1;
|
||
desc.SampleDesc.Count = 1;
|
||
desc.SampleDesc.Quality = 0;
|
||
desc.BindFlags = D3D11_BIND_SHADER_RESOURCE | D3D11_BIND_RENDER_TARGET;
|
||
|
||
assert(texSizes.size() == _effects.size() + 1);
|
||
for (size_t i = 0, end = _effects.size() - 1; i < end; ++i) {
|
||
SIZE texSize = texSizes[i + 1];
|
||
desc.Width = texSize.cx;
|
||
desc.Height = texSize.cy;
|
||
|
||
ComPtr<ID3D11Texture2D> outputTex;
|
||
HRESULT hr = _d3dDevice->CreateTexture2D(&desc, nullptr, &outputTex);
|
||
if (FAILED(hr)) {
|
||
return false;
|
||
}
|
||
|
||
if (!_effects[i].Build(curTex, outputTex)) {
|
||
return false;
|
||
}
|
||
|
||
curTex = outputTex;
|
||
}
|
||
|
||
// 最后一个效果输出到后缓冲纹理
|
||
if (!_effects.back().Build(curTex, _backBuffer)) {
|
||
return false;
|
||
}
|
||
}
|
||
|
||
SIZE outputSize = texSizes.back();
|
||
destRect.left = (hostSize.cx - outputSize.cx) / 2;
|
||
destRect.right = destRect.left + outputSize.cx;
|
||
destRect.top = (hostSize.cy - outputSize.cy) / 2;
|
||
destRect.bottom = destRect.top + outputSize.cy;
|
||
|
||
return true;
|
||
}
|
||
|
||
bool Renderer::SetAlphaBlend(bool enable) {
|
||
if (!enable) {
|
||
_d3dDC->OMSetBlendState(nullptr, nullptr, 0xffffffff);
|
||
return true;
|
||
}
|
||
|
||
if (!_alphaBlendState) {
|
||
D3D11_BLEND_DESC desc{};
|
||
desc.RenderTarget[0].BlendEnable = TRUE;
|
||
desc.RenderTarget[0].SrcBlend = D3D11_BLEND_SRC_ALPHA;
|
||
desc.RenderTarget[0].SrcBlendAlpha = D3D11_BLEND_ONE;
|
||
desc.RenderTarget[0].DestBlend = D3D11_BLEND_INV_SRC_ALPHA;
|
||
desc.RenderTarget[0].DestBlendAlpha = D3D11_BLEND_ZERO;
|
||
desc.RenderTarget[0].BlendOp = desc.RenderTarget[0].BlendOpAlpha = D3D11_BLEND_OP_ADD;
|
||
desc.RenderTarget[0].RenderTargetWriteMask = D3D11_COLOR_WRITE_ENABLE_ALL;
|
||
|
||
HRESULT hr = _d3dDevice->CreateBlendState(&desc, &_alphaBlendState);
|
||
if (FAILED(hr)) {
|
||
SPDLOG_LOGGER_CRITICAL(logger, MakeComErrorMsg("CreateBlendState 失败", hr));
|
||
return false;
|
||
}
|
||
}
|
||
|
||
_d3dDC->OMSetBlendState(_alphaBlendState.Get(), nullptr, 0xffffffff);
|
||
return true;
|
||
}
|
||
|
||
bool Renderer::GetSampler(EffectSamplerFilterType filterType, EffectSamplerAddressType addressType, ID3D11SamplerState** result) {
|
||
ID3D11SamplerState** sampler;
|
||
D3D11_TEXTURE_ADDRESS_MODE addressMode;
|
||
D3D11_FILTER filter;
|
||
|
||
if (filterType == EffectSamplerFilterType::Linear) {
|
||
filter = D3D11_FILTER_MIN_MAG_MIP_LINEAR;
|
||
if (addressType == EffectSamplerAddressType::Clamp) {
|
||
sampler = _linearClampSampler.GetAddressOf();
|
||
addressMode = D3D11_TEXTURE_ADDRESS_CLAMP;
|
||
} else {
|
||
sampler = _linearWrapSampler.GetAddressOf();
|
||
addressMode = D3D11_TEXTURE_ADDRESS_WRAP;
|
||
}
|
||
} else {
|
||
filter = D3D11_FILTER_MIN_MAG_MIP_POINT;
|
||
if (addressType == EffectSamplerAddressType::Clamp) {
|
||
sampler = _pointClampSampler.GetAddressOf();
|
||
addressMode = D3D11_TEXTURE_ADDRESS_CLAMP;
|
||
} else {
|
||
sampler = _pointWrapSampler.GetAddressOf();
|
||
addressMode = D3D11_TEXTURE_ADDRESS_WRAP;
|
||
}
|
||
}
|
||
|
||
if (*sampler) {
|
||
*result = *sampler;
|
||
return true;
|
||
}
|
||
|
||
D3D11_SAMPLER_DESC desc{};
|
||
desc.Filter = filter;
|
||
desc.AddressU = addressMode;
|
||
desc.AddressV = addressMode;
|
||
desc.AddressW = addressMode;
|
||
desc.ComparisonFunc = D3D11_COMPARISON_NEVER;
|
||
desc.MinLOD = 0;
|
||
desc.MaxLOD = 0;
|
||
HRESULT hr = _d3dDevice->CreateSamplerState(&desc, sampler);
|
||
|
||
if (FAILED(hr)) {
|
||
SPDLOG_LOGGER_ERROR(logger, MakeComErrorMsg("创建 ID3D11SamplerState 出错", hr));
|
||
return false;
|
||
}
|
||
|
||
*result = *sampler;
|
||
return true;
|
||
}
|