Direct3DCreate9与Direct3DCreate9Ex
最近做的一个项目是基于WPF框架的，由于WPF是基于D3D显示的，所以将之前的显示部分移植过去之后，初始化不成功。对于遇到的问题做个整理，如下：
由于我们是视频的显示，实际上只用到D3D中的2D显示的功能，对于3D的渲染及纹理等部分的要求不高。
头文件
typedef struct IDirect3D9Ex *LPDIRECT3D9EX, *PDIRECT3D9EX;
typedef HRESULT (WINAPI *DIRECT3DCREATE9EXFUNCTION)(UINT SDKVersion, IDirect3D9Ex**);
#define IFC(x) { hr = (x); if (FAILED(hr)) goto Cleanup; }
struct CUSTOMVERTEX
{
FLOAT x, y, z, rhw; // The transformed position for the vertex
DWORD color; // The vertex color
FLOAT tu, tv; // The position for texture
};
class CVideoRender
{
public:
CVideoRender();
~CVideoRender();
int InitD3D(HWND hWnd);
bool CreateOneSurface(int index, int width, int height);
void FreeD3DAll();
void FreeOneSurface(int id);
void DisplayFrame(int index, BYTE* pVData, char* text = NULL, char* time = NULL, char* tips=NULL);
void SetDstShowMode(int showMode);
private:
void CopyToSurface(int index, BYTE *pVData);
HRESULT EnsureD3DObjects();
public:
LPDIRECT3DDEVICE9 m_pD3DDevice;
IDirect3DDevice9Ex *m_pd3dDeviceEx;
LPDIRECT3D9 m_pD3D;
IDirect3D9Ex *m_pD3DEx;
ID3DXFont *m_pD3DFontB;
ID3DXFont *m_pD3DFontS;
HWND m_hWndMainView;
int m_showMode;
IDirect3DSurface9 *m_pD3DPlainSurface[MAX_SCREEN];
IDirect3DSwapChain9 *m_pSwapChain[MAX_SCREEN];
IDirect3DSurface9 *m_pBackBuffer[MAX_SCREEN];
RECT m_rcDst, //window primary surface rect
m_rcSrcFrame[MAX_SCREEN],
m_rcDstFrame[MAX_SCREEN];
CRITICAL_SECTION m_cs;
char m_Text[MAX_SCREEN][128];
bool _isInitialized;
bool _supportsD3dEx;
};
1. D3D的显示与系统上的DirectX_SDK的版本也是有关系的，在使用的过程中，第一步要确定系统上的DirectX_SDK的头文件中是否有你所使用的函数，
检测显示的环境
HRESULT EnsureD3DObjects()
{
HRESULT hr = S_OK;
HMODULE hD3D = NULL;
//加载动态库，在安装系统显示库后，会在C:\\WINDOWS\\SYSTEM32目录下生成该dll文件
hD3D = LoadLibrary(TEXT("d3d9.dll"));
if (hD3D) {
//检测该动态库是否支持Direct3DCreate9Ex方法
DIRECT3DCREATE9EXFUNCTION pfnCreate9Ex = (DIRECT3DCREATE9EXFUNCTION)GetProcAddress(hD3D, "Direct3DCreate9Ex");
if (pfnCreate9Ex){
_supportsD3dEx = true;
printf("_supportsD3dEx is true\n");
hr = (*pfnCreate9Ex)(D3D_SDK_VERSION, &m_pD3DEx);
if (hr == S_OK) {
hr = m_pD3DEx->QueryInterface(__uuidof(IDirect3D9), reinterpret_cast<void **>(&m_pD3D));
}
} else {
_supportsD3dEx = false;
printf("_supportsD3dEx is false\n");
m_pD3D = Direct3DCreate9(D3D_SDK_VERSION);
if (!m_pD3D) {
hr = E_FAIL;
printf("Direct3DCreate9 failed\n");
}
}
FreeLibrary(hD3D);
} else {
hr = E_FAIL;
}
return hr;
}
2.创建D3D设备
int InitD3D(HWND hWnd)
{
if (_isInitialized)
return WP_PDVR_HAS_INITD3D;
m_hWndMainView = hWnd;
HRESULT hr = EnsureD3DObjects();
if (hr == S_OK) {
// printf("EnsureD3DObjects S_OK\n");
_isInitialized = true;
}
D3DCAPS9 caps;
int vp = 0;
m_pD3D->GetDeviceCaps(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, &caps);
if (caps.DevCaps & D3DDEVCAPS_HWTRANSFORMANDLIGHT) {
printf("D3DCREATE_HARDWARE_VERTEXPROCESSING\n");
vp = D3DCREATE_HARDWARE_VERTEXPROCESSING;
} else {
printf("D3DCREATE_SOFTWARE_VERTEXPROCESSING\n");
vp = D3DCREATE_SOFTWARE_VERTEXPROCESSING;
}
D3DPRESENT_PARAMETERS d3dpp; //定义显示参数
ZeroMemory(&d3dpp, sizeof(d3dpp));
d3dpp.Windowed = TRUE;
d3dpp.BackBufferHeight = 1;
d3dpp.BackBufferWidth = 1;
d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
d3dpp.BackBufferFormat = D3DFMT_UNKNOWN;
if (!_supportsD3dEx) {
// Create the D3DDevice
if (FAILED(m_pD3D->CreateDevice(D3DADAPTER_DEFAULT, //D3DADAPTER_DEFAULT 标记来指定使用默认的显示器
D3DDEVTYPE_HAL, //D3DDEVTYPE_HAL来指定设备类型为硬件设备而不是软件设备
m_hWndMainView,
vp | D3DCREATE_MULTITHREADED | D3DCREATE_FPU_PRESERVE,
&d3dpp,
&m_pD3DDevice ))) {
//printf("CreateDevice failed D3DERR_INVALIDCALL\n");
//printf("m_pD3DDevice is null\n");
return WP_PDVR_INITD3D_FAILED;
}
} else {
HRESULT hr = S_OK;
hr = m_pD3DEx->CreateDeviceEx(D3DADAPTER_DEFAULT,
D3DDEVTYPE_HAL,
m_hWndMainView,
vp | D3DCREATE_MULTITHREADED | D3DCREATE_FPU_PRESERVE,
&d3dpp,
NULL,
&m_pd3dDeviceEx);
//printf("CreateDeviceEx hr = %d\n", hr);
if (hr == S_OK) {
hr = m_pd3dDeviceEx->QueryInterface(__uuidof(IDirect3DDevice9), reinterpret_cast<void**>(&m_pD3DDevice));
}
if (hr != S_OK) {
//printf("D3D9x CreateDeviceEx failed\n");
return WP_PDVR_INITD3D_FAILED;
}
}
// HFONT hFont = CreateFont(24, 12, 0, 0, 500, 0, 0, 0, DEFAULT_CHARSET, OUT_TT_PRECIS, CLIP_TT_ALWAYS, PROOF_QUALITY, DEFAULT_PITCH, "锟斤拷锟斤拷");
// D3DXCreateFont(m_pD3DDevice, hFont, &m_pD3DFontB);
// DeleteObject(hFont);
//
// hFont = CreateFont(24, 12, 0, 0, 500, 0, 0, 0, DEFAULT_CHARSET, OUT_TT_PRECIS, CLIP_TT_ALWAYS, PROOF_QUALITY, DEFAULT_PITCH, "锟斤拷锟斤拷");
// D3DXCreateFont( m_pD3DDevice, hFont, &m_pD3DFontS );
// DeleteObject(hFont);
return WP_PDVR_NOERROR;
}
***只有在以上两步中会有IDirect3D9Ex 和IDirect3D9的区别，在后面的步骤，都是统一的IDirect3D9
3.显示
void SetDstShowMode(int showMode)
{
m_showMode = showMode;
GetClientRect(m_hWndMainView, &m_rcDst);
int width = m_rcDst.right,
height = m_rcDst.bottom;
//printf("SetDstShowMode width = %d height = %d\n", width, height);
int n = 0,
iY = 0,
iX = 0;
width = width/showMode;
height = height/showMode;
for (iY = 0; iY < showMode; iY++) {
for (iX = 0; iX < showMode; iX++) {
m_rcDstFrame[n].left = iX * width + 1;
m_rcDstFrame[n].right = (iX+1) * width - 2;
m_rcDstFrame[n].top = iY * height + 1;
m_rcDstFrame[n].bottom = (iY+1) * height - 2;
n++;
}
}
InvalidateRect(m_hWndMainView, NULL, TRUE);
}
void CopyToSurface(int index, BYTE *pVData)
{
int bytescopy,
height;
if (m_pD3DPlainSurface[index]) {
bytescopy = m_rcSrcFrame[index].right * 2;
height = m_rcSrcFrame[index].bottom;
D3DLOCKED_RECT Drc = {0};
m_pD3DPlainSurface[index]->LockRect(&Drc, NULL, 0);
BYTE * pBits = (BYTE *)Drc.pBits;
if (NULL == pBits) {
m_pD3DPlainSurface[index]->UnlockRect();
return ;
}
for (int i = 0; i < height; i++) {
memcpy(pBits, pVData, bytescopy);
pBits += Drc.Pitch;
pVData += bytescopy;
}
m_pD3DPlainSurface[index]->UnlockRect();
}
}
#define COLORT D3DCOLOR_XRGB(0,255,255)
#define COLORW D3DCOLOR_XRGB(255,255,255)
void DisplayFrame(int index, BYTE *pVData, char *text, char *time, char *tips)
{
__try {
CopyToSurface(index, pVData);
EnterCriticalSection(&m_cs);
m_pD3DDevice->StretchRect(m_pD3DPlainSurface[index], NULL, m_pBackBuffer[index], NULL, D3DTEXF_LINEAR);
m_pD3DDevice->SetRenderTarget(0, m_pBackBuffer[index]);
m_pD3DDevice->BeginScene();
// if (m_Text[index]) {
// if (m_rcSrcFrame[index].right > 500) {
// m_pD3DFontB->DrawTextA(m_Text[index], -1, &m_rcSrcFrame[index], DT_LEFT, COLORW);
//
// } else {
// m_pD3DFontS->DrawTextA(m_Text[index], -1, &m_rcSrcFrame[index], DT_LEFT, COLORW);
// }
// }
//
// if (time) {
// m_pD3DFontB->DrawTextA(time, -1, &m_rcSrcFrame[index], DT_BOTTOM | DT_RIGHT | DT_SINGLELINE, COLORT);
// }
m_pD3DDevice->EndScene();
m_pSwapChain[index]->Present(NULL, &m_rcDstFrame[index], NULL, NULL, D3DPRESENT_DONOTWAIT);
LeaveCriticalSection(&m_cs);
} __except(1) {}
}
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