C ++ Directx 11尝试将XMMatrixTranslation作为一个多维数据集

Question

尝试使用XMMatrixTranslation函数修改立方体位置。附上的是代码......

//旋转并修改原点周围立方体的位置     g_World = XMMatrixRotationY（t）;

g_World = XMMatrixMultiply(g_World, XMMatrixTranslation(0, yDirection, 0));

// Modify the color
g_vMeshColor.x = ( sinf( t * 1.0f ) + 1.0f ) * 0.5f;
g_vMeshColor.y = ( cosf( t * 3.0f ) + 1.0f ) * 0.5f;
g_vMeshColor.z = ( sinf( t * 5.0f ) + 1.0f ) * 0.5f;

//
// Clear the back buffer
//
float ClearColor[4] = { 0.0f, 0.125f, 0.3f, 1.0f }; // red, green, blue, alpha
g_pImmediateContext->ClearRenderTargetView( g_pRenderTargetView, ClearColor );

//
// Clear the depth buffer to 1.0 (max depth)
//
g_pImmediateContext->ClearDepthStencilView( g_pDepthStencilView, D3D11_CLEAR_DEPTH, 1.0f, 0 );

//
// Update variables that change once per frame
//
CBChangesEveryFrame cb;
cb.mWorld = XMMatrixTranspose( g_World );
cb.vMeshColor = g_vMeshColor;
g_pImmediateContext->UpdateSubresource( g_pCBChangesEveryFrame, 0, NULL, &cb, 0, 0 );

//
// Render the cube
//
g_pImmediateContext->VSSetShader( g_pVertexShader, NULL, 0 );
g_pImmediateContext->VSSetConstantBuffers( 0, 1, &g_pCBNeverChanges );
g_pImmediateContext->VSSetConstantBuffers( 1, 1, &g_pCBChangeOnResize );
g_pImmediateContext->VSSetConstantBuffers( 2, 1, &g_pCBChangesEveryFrame );
g_pImmediateContext->PSSetShader( g_pPixelShader, NULL, 0 );
g_pImmediateContext->PSSetConstantBuffers( 2, 1, &g_pCBChangesEveryFrame );
g_pImmediateContext->PSSetShaderResources( 0, 1, &g_pTextureRV );
g_pImmediateContext->PSSetSamplers( 0, 1, &g_pSamplerLinear );
g_pImmediateContext->DrawIndexed( 36, 0, 0 );

//
// Present our back buffer to our front buffer
//
g_pSwapChain->Present( 0, 0 );

当我按下向下按钮时，立方体的位置应该在负y方向上改变。当我按下键时，立方体消失了。

谢谢，

斯科特