DirectX 11透明度の問題

Question

透明な背景を持つpngファイルがあります。

私が画像を描くとき、​​透明度が働きます。

限り以下見られるように、それの前に他の透明画像が存在しないように。この問題を解決するために

どのような変更私は私の透明コードに作成する必要がありますか？

深度ステンシルコード：

// Initialize the description of the depth buffer. 
ZeroMemory(&depthBufferDesc, sizeof(depthBufferDesc)); 

// Set up the description of the depth buffer. 
depthBufferDesc.Width = screenWidth; 
depthBufferDesc.Height = screenHeight; 
depthBufferDesc.MipLevels = 1; 
depthBufferDesc.ArraySize = 1; 
depthBufferDesc.Format = DXGI_FORMAT_D24_UNORM_S8_UINT; 
depthBufferDesc.SampleDesc.Count = 1; 
depthBufferDesc.SampleDesc.Quality = 0; 
depthBufferDesc.Usage = D3D11_USAGE_DEFAULT; 
depthBufferDesc.BindFlags = D3D11_BIND_DEPTH_STENCIL; 
depthBufferDesc.CPUAccessFlags = 0; 
depthBufferDesc.MiscFlags = 0; 

// Create the texture for the depth buffer using the filled out description. 
result = m_device->CreateTexture2D(&depthBufferDesc, NULL, &m_depthStencilBuffer); 
Error::ErrorCheck(result, TEXT("m_device->CreateTexture2D()")); 

// Initialize the description of the stencil state. 
ZeroMemory(&depthStencilDesc, sizeof(depthStencilDesc)); 

// Set up the description of the stencil state. 
depthStencilDesc.DepthEnable = true; 
depthStencilDesc.DepthWriteMask = D3D11_DEPTH_WRITE_MASK_ALL; 
depthStencilDesc.DepthFunc = D3D11_COMPARISON_LESS; 

depthStencilDesc.StencilEnable = true; 
depthStencilDesc.StencilReadMask = 0xFF; 
depthStencilDesc.StencilWriteMask = 0xFF; 

// Stencil operations if pixel is front-facing. 
depthStencilDesc.FrontFace.StencilFailOp = D3D11_STENCIL_OP_KEEP; 
depthStencilDesc.FrontFace.StencilDepthFailOp = D3D11_STENCIL_OP_INCR; 
depthStencilDesc.FrontFace.StencilPassOp = D3D11_STENCIL_OP_KEEP; 
depthStencilDesc.FrontFace.StencilFunc = D3D11_COMPARISON_ALWAYS; 

// Stencil operations if pixel is back-facing. 
depthStencilDesc.BackFace.StencilFailOp = D3D11_STENCIL_OP_KEEP; 
depthStencilDesc.BackFace.StencilDepthFailOp = D3D11_STENCIL_OP_DECR; 
depthStencilDesc.BackFace.StencilPassOp = D3D11_STENCIL_OP_KEEP; 
depthStencilDesc.BackFace.StencilFunc = D3D11_COMPARISON_ALWAYS; 

// Create the depth stencil state. 
result = m_device->CreateDepthStencilState(&depthStencilDesc, &m_depthStencilState); 
Error::ErrorCheck(result, TEXT("m_device->CreateDepthStencilState()")); 

// Set the depth stencil state. 
m_deviceContext->OMSetDepthStencilState(m_depthStencilState, 0); 

// Initailze the depth stencil view. 
ZeroMemory(&depthStencilViewDesc, sizeof(depthStencilViewDesc)); 

// Set up the depth stencil view description. 
depthStencilViewDesc.Format = DXGI_FORMAT_D24_UNORM_S8_UINT; 
depthStencilViewDesc.ViewDimension = D3D11_DSV_DIMENSION_TEXTURE2D; 
depthStencilViewDesc.Texture2D.MipSlice = 0; 

// Create the depth stencil view. 
result = m_device->CreateDepthStencilView(m_depthStencilBuffer, &depthStencilViewDesc, &m_depthStencilView); 
Error::ErrorCheck(result, TEXT("m_device->CreateDepthStencilView()")); 

// Bind the render target view and depth stencil buffer to the output render pipeline. 
m_deviceContext->OMSetRenderTargets(1, &m_renderTargetView, m_depthStencilView); 

透明コード：

//Setup Blend State for transperency 
D3D11_BLEND_DESC BlendStateDescription; 
ZeroMemory(&BlendStateDescription, sizeof(D3D11_BLEND_DESC)); 

ID3D11BlendState* blend; 

BlendStateDescription.RenderTarget[0].BlendEnable = TRUE; 
BlendStateDescription.RenderTarget[0].RenderTargetWriteMask = D3D11_COLOR_WRITE_ENABLE_ALL; 
BlendStateDescription.RenderTarget[0].SrcBlend = D3D11_BLEND_SRC_ALPHA; 

BlendStateDescription.RenderTarget[0].DestBlend = D3D11_BLEND_INV_SRC_ALPHA; 
BlendStateDescription.RenderTarget[0].SrcBlendAlpha = D3D11_BLEND_INV_DEST_ALPHA; 
BlendStateDescription.RenderTarget[0].DestBlendAlpha = D3D11_BLEND_ONE; 
BlendStateDescription.RenderTarget[0].BlendOp = D3D11_BLEND_OP_ADD; 
BlendStateDescription.RenderTarget[0].BlendOpAlpha = D3D11_BLEND_OP_ADD; 

m_device->CreateBlendState(&BlendStateDescription, &blend); 
float blendFactor[] = { 0, 0, 0, 0 }; 
UINT sampleMask = 0xffffffff; 

m_deviceContext->OMSetBlendState(blend, blendFactor, sampleMask); 

Answer 1

は、問題を発見しました。深度バッファーに入っていた。 depthStencilDesc.DepthFuncをD3D11_COMPARISON_LESSからD3D11_COMPARISON_LESS_EQUALに変更するだけです。ここで答えを見つけ

、より詳細な説明については、リンクをたどる： Detailed answer