DirectX小段代码总结（一）

显卡渲染时，要先擦后画

void CD3DInit::Render(){if(NULL == g_pD3DDevice)return;//--将填充后台缓冲区置为黑色g_pD3DDevice->Clear(0, NULL, D3DCLEAR_TARGET|D3DCLEAR_ZBUFFER, D3DCOLOR_XRGB(0,0,0),1.0f,0);g_pD3DDevice->BeginScene(); //--开始通知显卡要进行渲染//SetItem();g_Texture->Render();g_pD3DDevice->EndScene();  //--结束图形的渲染g_pD3DDevice->Present(NULL, NULL, NULL, NULL);//--翻页}

D3D初始化的时候判断要用SUCCEEDED

if (SUCCEEDED(this->InitD3D(hWnd))){      //do something}

物体绕指定轴旋转

void   CTexture::setupRotation() { D3DXMATRIX  matWorld, matTrans, matTrans1;D3DXMatrixTranslation(&matTrans, 0,0, 3.0f);D3DXMatrixRotationY(&matWorld, timeGetTime()/1000.0f); D3DXMatrixTranslation(&matTrans1, 0,0, 5.0f);D3DXMatrixMultiply(&matWorld,&matTrans,&matWorld );D3DXMatrixMultiply(&matWorld,&matWorld,&matTrans1 );m_pD3DDevice->SetTransform(D3DTS_WORLD, &matWorld);} 

恢复矩阵设置

void   CTexture::deafultMatrix() { D3DXMATRIX  matWorld, matTrans, matTrans1;D3DXMatrixTranslation(&matTrans, 0,0, 0.0f);D3DXMatrixRotationY(&matWorld, 0.0f); D3DXMatrixTranslation(&matTrans1, 0,0, 0.0f);D3DXMatrixMultiply(&matWorld,&matTrans,&matWorld );D3DXMatrixMultiply(&matWorld,&matWorld,&matTrans1 );m_pD3DDevice->SetTransform(D3DTS_WORLD, &matWorld);}