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June 8, 2020 03:49
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Direct3D example
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#include <windows.h> | |
#include <windowsx.h> | |
#include <stdio.h> | |
#include <d3d9.h> | |
#pragma comment (lib, "d3d9.lib") | |
LPDIRECT3D9 d3d; | |
LPDIRECT3DDEVICE9 device; | |
const int W = 1200, H = 800; | |
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam); | |
void Initialize(HWND hWnd) | |
{ | |
d3d = Direct3DCreate9(D3D_SDK_VERSION); | |
D3DPRESENT_PARAMETERS d3dpp; | |
ZeroMemory(&d3dpp, sizeof(d3dpp)); | |
d3dpp.Windowed = TRUE; | |
d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD; | |
d3dpp.hDeviceWindow = hWnd; | |
d3dpp.BackBufferFormat = D3DFMT_A8R8G8B8; | |
d3dpp.BackBufferWidth = W; | |
d3dpp.BackBufferHeight = H; | |
d3d->CreateDevice(D3DADAPTER_DEFAULT, | |
D3DDEVTYPE_HAL, | |
hWnd, | |
D3DCREATE_SOFTWARE_VERTEXPROCESSING, | |
&d3dpp, | |
&device); | |
printf("Hello world\n"); | |
} | |
void Cleanup() | |
{ | |
device->Release(); | |
d3d->Release(); | |
} | |
void Draw(void) | |
{ | |
IDirect3DSurface9 *surface = nullptr; | |
device->CreateOffscreenPlainSurface(W, H, D3DFMT_A8R8G8B8, D3DPOOL_SYSTEMMEM, &surface, nullptr); | |
IDirect3DSurface9 *buffer = nullptr; | |
device->GetBackBuffer(0, 0, D3DBACKBUFFER_TYPE_MONO, &buffer); | |
HDC targetdc = NULL; | |
surface->GetDC(&targetdc); | |
HWND srcwnd = GetConsoleWindow(); | |
HDC scrdc = GetDC(srcwnd); | |
BOOL res = BitBlt(targetdc, 0, 0, W, H, scrdc, 0, 0, SRCCOPY); | |
ReleaseDC(srcwnd, scrdc); | |
surface->ReleaseDC(targetdc); | |
device->UpdateSurface(surface, NULL, buffer, NULL); | |
device->Present(NULL, NULL, NULL, NULL); | |
} | |
DWORD t=0; | |
int c=0; | |
int main() | |
{ | |
HWND hWnd; | |
WNDCLASSEX wc; | |
ZeroMemory(&wc, sizeof(WNDCLASSEX)); | |
wc.cbSize = sizeof(WNDCLASSEX); | |
wc.style = CS_HREDRAW | CS_VREDRAW; | |
wc.lpfnWndProc = WndProc; | |
wc.hInstance = GetModuleHandle(NULL); | |
wc.hCursor = LoadCursor(NULL, IDC_ARROW); | |
wc.hbrBackground = (HBRUSH)COLOR_WINDOW; | |
wc.lpszClassName = L"WindowClass"; | |
RegisterClassEx(&wc); | |
hWnd = CreateWindowEx(NULL, | |
L"WindowClass", | |
L"Direct3D Test", | |
WS_OVERLAPPEDWINDOW, | |
CW_USEDEFAULT, 0, | |
W, H, | |
NULL, | |
NULL, | |
GetModuleHandle(NULL), | |
NULL); | |
ShowWindow(hWnd, SW_SHOW); | |
Initialize(hWnd); | |
MSG msg; | |
while (TRUE) | |
{ | |
while (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) | |
{ | |
TranslateMessage(&msg); | |
DispatchMessage(&msg); | |
} | |
if (msg.message == WM_QUIT) break; | |
DWORD t1 = GetTickCount(); | |
Draw(); | |
DWORD t2 = GetTickCount(); | |
t += t2 - t1; | |
c++; | |
if(c==50) printf("%f\n", t/(float)c); | |
} | |
Cleanup(); | |
return msg.wParam; | |
} | |
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) | |
{ | |
switch (message) | |
{ | |
case WM_DESTROY: | |
{ | |
PostQuitMessage(0); | |
return 0; | |
} break; | |
} | |
return DefWindowProc(hWnd, message, wParam, lParam); | |
} |
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