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myGUI Engine & FreeType2 封装

cngamedev — Tue, 19 Jan 2010 17:15:00 GMT

myGUI Engine & FreeType2 封装

cngamedev 2010-01-20 01:15 发表评论

TMovie

cngamedev — Mon, 05 Oct 2009 03:40:00 GMT

here is a TMovie class that will allow you to play any movie format in a texture

Code:

#include
#include
#include
#include

static GUID MY_CLSID_AMMultiMediaStream={0x49C47CE5,0x9BA4,0x11D0,0x82,0x12,0x00,0xC0,0x4F,0xC3,0x2C,0x45};
static GUID MY_IID_IAMMultiMediaStream={0xBEBE595C,0x9A6F,0x11D0,0x8F,0xDE,0x00,0xC0,0x4F,0xD9,0x18,0x9D};
static GUID MY_MSPID_PrimaryVideo={0xA35FF56A,0x9FDA,0x11D0,0x8F,0xDF,0x00,0xC0,0x4F,0xD9,0x18,0x9D};
static GUID MY_IID_IDirectDrawMediaStream={0xF4104FCE,0x9A70,0x11D0,0x8F,0xDE,0x00,0xC0,0x4F,0xD9,0x18,0x9D};
static GUID MY_MSPID_PrimaryAudio={0xA35FF56B,0x9FDA,0x11D0,0x8F,0xDF,0x00,0xC0,0x4F,0xD9,0x18,0x9D};

class TMovie
{
IAMMultiMediaStream* pAMStream;
IMediaStream* pPrimaryVidStream;
IDirectDrawMediaStream* pDDStream;
IDirectDrawStreamSample* pSample;
IDirectDrawSurface* pSurface;
RECT Movie_rect;
LONG MoviePitch;
void* MovieBuffer;
DWORD time;
DWORD oldtick;

public:
TMovie()
{
CoInitialize(0);
pAMStream = 0;
pPrimaryVidStream = 0;
pDDStream = 0;
pSample = 0;
pSurface = 0;
time = 0;
}

~TMovie()
{
pPrimaryVidStream->Release();
pDDStream->Release();
pSample->Release();
pSurface->Release();
pAMStream->Release();
CoUninitialize();
}

void LoadMovie(char* filename)
{
WCHAR buf[512];
MultiByteToWideChar(CP_ACP,0,filename,-1,buf,512);
CoCreateInstance(MY_CLSID_AMMultiMediaStream,0,1,MY_IID_IAMMultiMediaStream,(void**)&pAMStream);
pAMStream->Initialize((STREAM_TYPE) 0, 0, NULL);
pAMStream->AddMediaStream( 0, &MY_MSPID_PrimaryVideo, 0, NULL);
pAMStream->OpenFile(buf,4);
pAMStream->GetMediaStream( MY_MSPID_PrimaryVideo, &pPrimaryVidStream);
pPrimaryVidStream->QueryInterface(MY_IID_IDirectDrawMediaStream,(void**)&pDDStream);
pDDStream->CreateSample(0,0,0,&pSample);
pSample->GetSurface(&pSurface,&Movie_rect);
pAMStream->SetState((STREAM_STATE)1);
}

void NextMovieFrame()
{
if(GetTickCount()-oldtick < time)return ;
oldtick = GetTickCount();
pSample->Update( 0, NULL, NULL, 0);
}

int MovieWidth() { return (Movie_rect.right - Movie_rect.left);}

int MovieHeight() { return (Movie_rect.bottom - Movie_rect.top);}

void DrawMovie(int x,int y,ITexture* Buf)
{
void* pBits = Buf->lock();
LONG Pitch = Buf->getPitch();
DDSURFACEDESC ddsd;
ddsd.dwSize=sizeof(DDSURFACEDESC);
pSurface->Lock( NULL,&ddsd, DDLOCK_SURFACEMEMORYPTR | DDLOCK_WAIT , NULL);
int wmin=(Pitch for(int h=0; h memcpy((BYTE*)pBits+((y+h)*Pitch)+x*4,(BYTE*)ddsd.lpSurface+h*ddsd.lPitch,wmin);
pSurface->Unlock(NULL);
Buf->unlock();
}

void SetMovieFPS(int fps)
{
time = fps;
}

} ;

you can use it as the following

Code:

TMovie* movie = new TMovie;
movie->LoadMovie("mymovie.mpg");
movie->SetMovieFPS(25);

ITexture* movTxtr;
irrVideo->setTextureCreationFlag(ETCF_ALWAYS_32_BIT , TRUE);
irrVideo->setTextureCreationFlag(ETCF_CREATE_MIP_MAPS, FALSE);
movTxtr = irrVideo->addTexture(dimension2d(512,256),"imovie");

while(irrDevice->run())
{
irrVideo->beginScene(true, true, SColor(0,200,200,200))
movie->NextMovieFrame()
movie->DrawMovie(0,0,movTxtr)
irrSceneMgr->drawAll()
irrVideo->endScene()
}

now you see how it is so easy to play any movie in your texture.

cngamedev 2009-10-05 11:40 发表评论

如何用nvperfkit分析他人制作的游戏

cngamedev — Wed, 30 Sep 2009 03:30:00 GMT

开发游戏的时候，总会做下同类型游戏的性能对比，一般nvperfhud只能用来分析我们自己写的应用程序，因为这涉及到改代码的问题。那么如何分析别人做的游戏呢，可以用nvidia的perfkit提供的计数器结合系统管理工具perfmon、dx pix for window进行监视。

具体操作步骤：

1. 安装nvidia perfkit 6.0。
2. 程序->nvidia perfsdk->nvidia developer control panel, 添加感兴趣的计数器如d3d batch count、d3d fps、d3d triangle count等。

3. 用控制面板->管理工具->性能(或者直接运行"perfmon")，添加nvidia插件提供的计数器。

4. dx pix for window->new experiment->添加plugin counters，选刚才第二步添加的计数器。

这样我们就能分析主流游戏的场景性能，比如天下二、苍天每帧一般在9-13w之间，dp在300-500之间；天龙八部固定视角每帧一般在3-5w，但天龙八部的dp每帧调用次数太多，应该是ogre导出场景的时候没有进行优化，另外max里尽可能避免材质组。

cngamedev 2009-09-30 11:30 发表评论

더 좋은 메모리릭 잡는 방법

cngamedev — Tue, 29 Sep 2009 15:47:00 GMT

이전 올렸던 릭 잡는 방법은 malloc으로 할당한 메모리 전용이라고 한다.

그래서인지 때로 전혀 말도 안되는 위치를 잡아내서 혼동이 있었는데..

좀더 편하고 new에 맞는 릭 위치 찾는 코드가 있었다..

#ifdef _DEBUG
#define new new(_NORMAL_BLOCK, __FILE__, __LINE__)
#endif

이라고 헤더에 선언하고..

_CrtSetDbgFlag ( _CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF );

를 메인의 처음에 써주면 메모리 릭 디텍트에다가

f4로 릭 위치 바로가기까지....

짱 좋다.

cngamedev 2009-09-29 23:47 发表评论