112 lines
2.5 KiB
C++
112 lines
2.5 KiB
C++
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module;
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#include <d2d1.h>
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#include <wrl/client.h>
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#include <wincodec.h>
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#include <cassert>
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module Graphics;
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using namespace D2D1;
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using namespace ::Microsoft::WRL;
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ComPtr<ID2D1HwndRenderTarget> Graphics::RT = nullptr;
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ComPtr<IWICImagingFactory> Graphics::wic_factory = nullptr;
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Vector2 Graphics::RtSize{};
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//ComPtr<IWICImagingFactory> Graphics::wic_factory = nullptr;
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void Graphics::Init(HWND hwnd)
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{
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ComPtr<ID2D1Factory> Factory = nullptr;
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auto hr = D2D1CreateFactory(D2D1_FACTORY_TYPE_SINGLE_THREADED, Factory.GetAddressOf());
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assert(hr == S_OK);
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RECT rc;
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GetClientRect(hwnd, &rc);
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hr = Factory->CreateHwndRenderTarget(
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RenderTargetProperties(),
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HwndRenderTargetProperties(hwnd, SizeU(rc.right-rc.left, rc.bottom-rc.top)),
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&RT
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);
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assert(hr == S_OK);
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RtSize = { (FLOAT)(rc.right - rc.left), (FLOAT)(rc.bottom - rc.top) };
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hr = CoCreateInstance(
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CLSID_WICImagingFactory,
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NULL,
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CLSCTX_INPROC_SERVER,
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IID_PPV_ARGS(&wic_factory)
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);
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assert(hr == S_OK);
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}
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void Graphics::BeginDraw()
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{
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RT->BeginDraw();
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}
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void Graphics::Clear()
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{
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RT->Clear({ .r = 0.96862745f, .g = 0.96862745f, .b = 0.96862745f, .a = 1.0f });
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}
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void Graphics::Present()
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{
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RT->EndDraw();
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}
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void Graphics::Finalize()
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{
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}
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void Graphics::DrawBitMap(const ComPtr<ID2D1Bitmap>& bitmap, D2D_RECT_F dst, D2D_RECT_F src)
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{
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if (!bitmap) return;
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dst.top = RtSize.y - dst.top;
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dst.bottom = RtSize.y - dst.bottom;
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RT->DrawBitmap(bitmap.Get(), dst, 1.0f, D2D1_BITMAP_INTERPOLATION_MODE_NEAREST_NEIGHBOR, src);
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}
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ComPtr<ID2D1Bitmap> Graphics::LoadImageFromFile(LPCWSTR uri)
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{
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ComPtr<ID2D1Bitmap> img = nullptr;
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ComPtr<IWICBitmapDecoder> decoder = nullptr;
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ComPtr<IWICBitmapFrameDecode> source = nullptr;
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ComPtr<IWICFormatConverter> converter = nullptr;
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auto hr = wic_factory->CreateDecoderFromFilename(
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uri,
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nullptr,
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GENERIC_READ,
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WICDecodeMetadataCacheOnLoad,
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&decoder
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);
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assert(hr == S_OK);
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hr = decoder->GetFrame(0, &source);
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assert(hr == S_OK);
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hr = wic_factory->CreateFormatConverter(&converter);
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assert(hr == S_OK);
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hr = converter->Initialize(
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source.Get(),
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GUID_WICPixelFormat32bppPBGRA,
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WICBitmapDitherTypeNone,
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NULL,
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0.f,
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WICBitmapPaletteTypeMedianCut
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);
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assert(hr == S_OK);
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hr = RT->CreateBitmapFromWicBitmap(
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converter.Get(),
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nullptr,
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&img
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);
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assert(hr == S_OK);
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return img;
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}
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