我正在尝试初始化 directX,但由于某些原因它无法创建 d3d 设备。 它编译正确,但显示最后一个消息框(“无法创建 D3D 设备”)
调试时:
- d3dObject 0x00000000 IDirect3D9 *
- IUnknown {...} IUnknown
__vfptr CXX0030:错误:无法计算表达式
#include <d3d9.h>
#include <d3dx9.h>
#include <windows.h>
HWND hMainWindow;
IDirect3D9 *d3dObject = 0;
IDirect3DDevice9 *d3dDevice = 0;
bool InitDirectX()
{
d3dObject = Direct3DCreate9(D3D_SDK_VERSION);
if( !d3dObject )
{
MessageBox(0, "Can't create Direct3D Object", "Error", MB_ICONSTOP);
PostQuitMessage(0);
}
D3DDISPLAYMODE mode;
d3dObject->GetAdapterDisplayMode(D3DADAPTER_DEFAULT, &mode);
d3dObject->CheckDeviceType(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, mode.Format, mode.Format, true);
d3dObject->CheckDeviceType(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, D3DFMT_X8R8G8B8, D3DFMT_X8R8G8B8, false);
D3DCAPS9 caps;
d3dObject->GetDeviceCaps(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, &caps);
DWORD devBehaviorFlags = 0;
if( caps.DevCaps & D3DDEVCAPS_HWTRANSFORMANDLIGHT )
devBehaviorFlags |= D3DCREATE_HARDWARE_VERTEXPROCESSING;
else
devBehaviorFlags |= D3DCREATE_SOFTWARE_VERTEXPROCESSING;
// If pure device and HW T&L supported
if( caps.DevCaps & D3DDEVCAPS_PUREDEVICE &&
devBehaviorFlags & D3DCREATE_HARDWARE_VERTEXPROCESSING)
devBehaviorFlags |= D3DCREATE_PUREDEVICE;
D3DPRESENT_PARAMETERS d3dpp;
d3dpp.BackBufferWidth = 800;
d3dpp.BackBufferHeight = 600;
d3dpp.BackBufferFormat = D3DFMT_X8R8G8B8;
d3dpp.BackBufferCount = 1;
d3dpp.MultiSampleType = D3DMULTISAMPLE_NONE;
d3dpp.MultiSampleQuality = 0;
d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
d3dpp.hDeviceWindow = hMainWindow;
d3dpp.Windowed = true;
d3dpp.EnableAutoDepthStencil = true;
d3dpp.AutoDepthStencilFormat = D3DFMT_D24S8;
d3dpp.Flags = 0;
d3dpp.FullScreen_RefreshRateInHz = D3DPRESENT_RATE_DEFAULT;
d3dpp.PresentationInterval = D3DPRESENT_INTERVAL_IMMEDIATE;
if(!d3dObject->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hMainWindow, devBehaviorFlags, &d3dpp, &d3dDevice))
{
::MessageBox(0, "Can't create D3D device", "Error", MB_ICONSTOP);
return false;
}
return true;
}
最佳答案
IDirect3D9::CreateDevice 返回一个 HRESULT 而不是 bool 值。 检查设备是否已创建的正确方法是使用 SUCCEEDED 或 FAILED 宏:
HRESULT hr = d3dObject->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hMainWindow, devBehaviorFlags, &d3dpp, &d3dDevice);
if( FAILED(hr) )
{
// hr will be one of the D3DERR_ values
::MessageBox(0, "Can't create D3D device", "Error", MB_ICONSTOP);
return false;
}
关于c++ - 无法创建 d3d 设备,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/9850500/