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58 lines
1.8 KiB
C++
58 lines
1.8 KiB
C++
#include "pch.h"
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#include "FrameRateDrawer.h"
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#include "App.h"
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#include "resource.h"
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bool FrameRateDrawer::Initialize(ComPtr<ID3D11Texture2D> renderTarget, const RECT& destRect) {
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Renderer& renderer = App::GetInstance().GetRenderer();
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_d3dDC = renderer.GetD3DDC();
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if (!renderer.GetRenderTargetView(renderTarget.Get(), &_rtv)) {
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return false;
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}
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_vp.MaxDepth = 1.0f;
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_vp.TopLeftX = (FLOAT)destRect.left;
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_vp.TopLeftY = (FLOAT)destRect.top;
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_vp.Width = FLOAT(destRect.right - destRect.left);
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_vp.Height = FLOAT(destRect.bottom - destRect.top);
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_spriteBatch.reset(new SpriteBatch(renderer.GetD3DDC().Get()));
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// 从资源文件获取字体
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HMODULE hInst = App::GetInstance().GetHInstance();
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HRSRC hRsrc = FindResource(hInst, MAKEINTRESOURCE(IDR_FRAME_RATE_FONT), RT_RCDATA);
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if (!hRsrc) {
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return false;
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}
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HGLOBAL hRes = LoadResource(hInst, hRsrc);
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if (!hRes) {
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return false;
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}
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_spriteFont.reset(new SpriteFont(renderer.GetD3DDevice().Get(),
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(const uint8_t*)LockResource(hRes), SizeofResource(hInst, hRsrc)));
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return true;
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}
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void FrameRateDrawer::Draw() {
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const StepTimer& timer = App::GetInstance().GetRenderer().GetTimer();
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_d3dDC->OMSetRenderTargets(1, &_rtv, nullptr);
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_d3dDC->RSSetViewports(1, &_vp);
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_spriteBatch->Begin(SpriteSortMode::SpriteSortMode_Immediate);
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constexpr float posX = 10.0f, posY = 10.0f;
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std::string fpsStr = fmt::format("{} FPS", timer.GetFramesPerSecond());
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// 右下角浓阴影，左上角淡阴影
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_spriteFont->DrawString(_spriteBatch.get(), fpsStr.c_str(),
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XMFLOAT2(posX + 1.0f, posY + 1.0f), XMVectorSet(0.0f, 0.0f, 0.0f, 0.8f));
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_spriteFont->DrawString(_spriteBatch.get(), fpsStr.c_str(),
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XMFLOAT2(posX - 0.1f, posY - 0.1f), XMVectorSet(0.0f, 0.0f, 0.0f, 0.4f));
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_spriteFont->DrawString(_spriteBatch.get(), fpsStr.c_str(),
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XMFLOAT2(posX, posY), Colors::White);
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_spriteBatch->End();
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}
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