- present using direct3d 9

src/win32/win32polyvideo.cpp

@@ -1,10 +1,132 @@
 
 #include <assert.h>
 #include "hardware.h"
+#include "doomerrors.h"
 #include <Windows.h>
 
 extern HWND Window;
 
+#if 1
+
+#include <d3d9.h>
+#pragma comment(lib, "d3d9.lib")
+
+struct D3D9Present
+{
+	D3D9Present()
+	{
+		d3d9 = Direct3DCreate9(D3D_SDK_VERSION);
+		if (!d3d9)
+		{
+			I_FatalError("Direct3DCreate9 failed");
+		}
+
+		bool vsync = false;
+		RECT rect = {};
+		GetClientRect(Window, &rect);
+		ClientWidth = rect.right;
+		ClientHeight = rect.bottom;
+
+		D3DPRESENT_PARAMETERS pp = {};
+		pp.Windowed = true;
+		pp.SwapEffect = D3DSWAPEFFECT_DISCARD;
+		pp.BackBufferWidth = ClientWidth;
+		pp.BackBufferHeight = ClientHeight;
+		pp.BackBufferCount = 1;
+		pp.hDeviceWindow = Window;
+		pp.PresentationInterval = vsync ? D3DPRESENT_INTERVAL_ONE : D3DPRESENT_INTERVAL_IMMEDIATE;
+
+		HRESULT result = d3d9->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, Window, D3DCREATE_HARDWARE_VERTEXPROCESSING, &pp, &device);
+		if (FAILED(result))
+		{
+			I_FatalError("IDirect3D9.CreateDevice failed");
+		}
+	}
+
+	void Present(int w, int h, const void *pixels)
+	{
+		HRESULT result;
+		if (SrcWidth != w || SrcHeight != h || !surface)
+		{
+			if (surface)
+			{
+				surface->Release();
+				surface = nullptr;
+			}
+
+			SrcWidth = w;
+			SrcHeight = h;
+			result = device->CreateOffscreenPlainSurface(SrcWidth, SrcHeight, D3DFMT_A8R8G8B8, D3DPOOL_DEFAULT, &surface, 0);
+			if (FAILED(result))
+			{
+				I_FatalError("IDirect3DDevice9.CreateOffscreenPlainSurface failed");
+			}
+		}
+
+		D3DLOCKED_RECT lockrect = {};
+		result = surface->LockRect(&lockrect, nullptr, D3DLOCK_DISCARD);
+		if (FAILED(result))
+			return;
+
+		int pixelsize = 4;
+		const uint8_t *src = (const uint8_t*)pixels;
+		uint8_t *dst = (uint8_t*)lockrect.pBits;
+		for (int y = 0; y < h; y++)
+		{
+			memcpy(dst + y * lockrect.Pitch, src + y * w * pixelsize, w * pixelsize);
+		}
+
+		surface->UnlockRect();
+
+		IDirect3DSurface9 *backbuffer = nullptr;
+		device->GetBackBuffer(0, 0, D3DBACKBUFFER_TYPE_MONO, &backbuffer);
+		if (FAILED(result))
+			return;
+
+		result = device->BeginScene();
+		if (SUCCEEDED(result))
+		{
+			RECT srcrect = {}, dstrect = {};
+			srcrect.right = SrcWidth;
+			srcrect.bottom = SrcHeight;
+			dstrect.right = ClientWidth;
+			dstrect.bottom = ClientHeight;
+			device->StretchRect(surface, &srcrect, backbuffer, &dstrect, D3DTEXF_LINEAR);
+
+			result = device->EndScene();
+			if (SUCCEEDED(result))
+				device->Present(nullptr, nullptr, 0, nullptr);
+		}
+
+		backbuffer->Release();
+	}
+
+	~D3D9Present()
+	{
+		if (surface) surface->Release();
+		if (device) device->Release();
+		if (d3d9) d3d9->Release();
+	}
+
+private:
+	int SrcWidth = 0;
+	int SrcHeight = 0;
+	int ClientWidth = 0;
+	int ClientHeight = 0;
+
+	IDirect3D9 *d3d9 = nullptr;
+	IDirect3DDevice9 *device = nullptr;
+	IDirect3DSurface9 *surface = nullptr;
+};
+
+void I_PresentPolyImage(int w, int h, const void *pixels)
+{
+	static D3D9Present present;
+	present.Present(w, h, pixels);
+}
+
+#else
+
 void I_PresentPolyImage(int w, int h, const void *pixels)
 {
 	BITMAPV5HEADER info = {};
@@ -27,3 +149,5 @@ void I_PresentPolyImage(int w, int h, const void *pixels)
 		StretchDIBits(dc, 0, 0, box.right, box.bottom, 0, 0, w, h, pixels, (const BITMAPINFO *)&info, DIB_RGB_COLORS, SRCCOPY);
 	ReleaseDC(Window, dc);
 }
+
+#endif