Hi folk!
I faced trouble: if far object will be rendered first and near object last then far object will be over near object. As far as i understand this problem appears when Depth buffer is disabled. I saw samples from DX SDK and compared them line by line to my code - there is no any success. Here is my code for initialization Graphics Device and rendering. Could you please see it and tell me what i forgot to do:
void GraphicsDevice::createGraphicsSystem(GRAPHICS_SETTINGS& settings)
{
TRACE( "Creating GraphicsDevice..." );
_backBufferHeight = settings.height;
_backBufferWidth = settings.width;
DXGI_SWAP_CHAIN_DESC desc;
desc.BufferDesc.Width = settings.width;
desc.BufferDesc.Height = settings.height;
desc.BufferDesc.RefreshRate.Numerator = 60;
desc.BufferDesc.RefreshRate.Denominator = 1;
desc.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
desc.BufferDesc.ScanlineOrdering = DXGI_MODE_SCANLINE_ORDER_UNSPECIFIED;
desc.BufferDesc.Scaling = DXGI_MODE_SCALING_UNSPECIFIED;
desc.SampleDesc.Count = settings.multisamplingCount;
desc.SampleDesc.Quality = settings.multisamplingQuality;
desc.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
desc.BufferCount = 1;
desc.OutputWindow = settings.hwnd;
desc.Windowed = settings.windowed;
desc.SwapEffect = DXGI_SWAP_EFFECT_DISCARD;
desc.Flags = 0;
UINT flags = 0;
#if defined(_DEBUG) || defined(DEBUG)
flags |= D3D10_CREATE_DEVICE_DEBUG;
#endif
dx_ptr<IDXGISwapChain> swapChain;
dx_ptr<ID3D10Device> device;
//HR( D3D10CreateDeviceAndSwapChain( NULL, D3D10_DRIVER_TYPE_HARDWARE, NULL, flags, D3D10_SDK_VERSION, &desc, swapChain.pptr(), device.pptr() ) );
HR( D3D10CreateDevice( NULL, D3D10_DRIVER_TYPE_HARDWARE, NULL, flags, D3D10_SDK_VERSION, device.pptr() ) );
dx_ptr<IDXGIFactory> dxgiFactory;
HR( CreateDXGIFactory( __uuidof(IDXGIFactory), (void**)dxgiFactory.pptr() ) );
HR( dxgiFactory->CreateSwapChain( device.ptr(), &desc, swapChain.pptr() ) );
HR( dxgiFactory->MakeWindowAssociation( settings.hwnd, DXGI_MWA_NO_WINDOW_CHANGES ) );
dxgiFactory.destroy();
dx_ptr<ID3D10RenderTargetView> renderTargetView;
dx_ptr<ID3D10Texture2D> backBuffer;
HR( swapChain->GetBuffer( 0, __uuidof( ID3D10Texture2D), reinterpret_cast<void**>( backBuffer.pptr() ) ) );
HR( device->CreateRenderTargetView( backBuffer.ptr(), 0, renderTargetView.pptr() ) );
backBuffer.destroy();
D3D10_TEXTURE2D_DESC dsd;
ZeroMemory( &dsd, sizeof( dsd ) );
dsd.Width = settings.width;
dsd.Height = settings.height;
dsd.MipLevels = 1;
dsd.ArraySize = 1;
dsd.Format = DXGI_FORMAT_D24_UNORM_S8_UINT;
dsd.SampleDesc.Count = 1;//settings.multisamplingCount;
dsd.SampleDesc.Quality = 0;// settings.multisamplingQuality;
dsd.Usage = D3D10_USAGE_DEFAULT;
dsd.BindFlags = D3D10_BIND_DEPTH_STENCIL;
dsd.CPUAccessFlags = 0;
dsd.MiscFlags = 0;
dx_ptr<ID3D10Texture2D> depthStencilBuffer;
HR( device->CreateTexture2D( &dsd, NULL, depthStencilBuffer.pptr() ) );
dx_ptr<ID3D10DepthStencilView> depthStencilView;
D3D10_DEPTH_STENCIL_VIEW_DESC descDSV;
descDSV.Format = dsd.Format;
descDSV.ViewDimension = D3D10_DSV_DIMENSION_TEXTURE2D;
descDSV.Texture2D.MipSlice = 0;
HR( device->CreateDepthStencilView( depthStencilBuffer.ptr(), &descDSV, depthStencilView.pptr() ) );
device->OMSetRenderTargets( 1, renderTargetView.pptr(), depthStencilView.ptr() );
D3D10_VIEWPORT vp;
ZeroMemory( &vp, sizeof( vp ) );
vp.TopLeftX = 0;
vp.TopLeftY = 0;
vp.Width = settings.width;
vp.Height = settings.height;
vp.MinDepth = 0.0f;
vp.MaxDepth = 1.0f;
device->RSSetViewports( 1, &vp );
_device = device.commit();
_swapChain = swapChain.commit();
_renderTargetView = renderTargetView.commit();
_depthStencilBuffer = depthStencilBuffer.commit();
_depthStencilView = depthStencilView.commit();
_deviceCreated = true;
TRACE( "GraphicsDevice created!" );
}
Rendering:
const float GraphicsDevice::DEPTH_CLEAR_VALUE = 1.0f;
const UINT8 GraphicsDevice::STENCIL_CLEAR_VALUE = 0;
inline void GraphicsDevice::beginRender(const D3DXCOLOR& backColor, UINT clearFlags = D3D10_CLEAR_DEPTH)
{
_device->ClearRenderTargetView( _renderTargetView, (float*)&backColor );
_device->ClearDepthStencilView( _depthStencilView, clearFlags, GraphicsDevice::DEPTH_CLEAR_VALUE, GraphicsDevice::STENCIL_CLEAR_VALUE );
}
inline void GraphicsDevice::endRender()
{
_swapChain->Present( 0, 0 );
}
Cancel
Save
Haven't really used DX10 before but you could try device->SetRenderState(D3DRS_ZENABLE, true)?
Cancel
Save
I don't see you creating or using a ID3D10DepthStencilState, although the default one should have depth enabled, so this might not be the problem.
Cancel
Save
I see you have commented out the multisampling/quality for the depth-stencil view. Do you use 1/0 multi-sampling for the render-target too?
Cancel
Save
Thanks a lot for your reply.
Cancel
Save
I'm not sure what the deal is. Maybe it's the default states being set, though why at that particular point I can't say. In PIX if you do a full frame capture and then go the render panel on the right, PIX will simulate all the calls and then you'll be able to double click on the device to see its exact state (to check the depth state), as well as debug specific pixels. That might help you find out what's going on.
Cancel
Save
Thanks a lot, ET3D for your advice about PIX. I never used it before and didn't know it's purpose. Through PIX i figured out that this calls cause the problem.
<0x02F83ED8> ID3D10Device::OMSetBlendState(0x0305B350, 0x002CF888, -1) 6810347774127 <0x02F83ED8> ID3D10Device::OMSetDepthStencilState(0x02F92A50, 0) 6810359577131 <0x0305ADC0> ID3D10Texture2D::Map(0, D3D10_MAP_WRITE, 0, 0x002CF590) 6810497117132 <0x0305ADC0> ID3D10Texture2D::Unmap(0) 6815603517141 <0x02F92AD8> ID3D10ShaderResourceView::GetResource(0x002CF5E0 --> 0x02FF38D0) 6816014595142 <0x02F83ED8> ID3D10Device::CopyResource(0x02FF38D0, 0x0305ADC0) 6819893407143 <0x02FF38D0> ID3D10Texture2D::Release() 6819943701147 <0x02F83ED8> ID3D10Device::IASetInputLayout(0x02F83DE8) 6820042750148 <0x02F83ED8> ID3D10Device::IASetPrimitiveTopology(D3D10_PRIMITIVE_TOPOLOGY_POINTLIST) 6820061738152 <0x02F83ED8> ID3D10Device::IASetVertexBuffers(0, 1, 0x014E3AE4 --> { 0x0305BE38 }, 0x002CF5EC, 0x002CF5E8) 6820070976I searched D3D10_PRIMITIVE_TOPOLOGY_POINTLIST and OMSetDepthStencilState in my code: there no such words. I was shocked and disappointed. Then one idea came to my head: besides cartesian system and textured rectangles i'm also displaying info about FPS through ID3DX10Font. I tried to run app without displaying this info. Success! Depth buffer is working! Problem was that ID3DX10Font during it's drawing changed depth buffer state. But now another question: why it is doing so?
Cancel
Save
Quote: Original post by Resharper <0x02F83ED8> ID3D10Device::OMSetBlendState(0x0305B350, 0x002CF888, -1) 6810347774127 <0x02F83ED8> ID3D10Device::OMSetDepthStencilState(0x02F92A50, 0) 6810359577131 <0x0305ADC0> ID3D10Texture2D::Map(0, D3D10_MAP_WRITE, 0, 0x002CF590) 6810497117132 <0x0305ADC0> ID3D10Texture2D::Unmap(0) 6815603517141 <0x02F92AD8> ID3D10ShaderResourceView::GetResource(0x002CF5E0 --> 0x02FF38D0) 6816014595142 <0x02F83ED8> ID3D10Device::CopyResource(0x02FF38D0, 0x0305ADC0) 6819893407143 <0x02FF38D0> ID3D10Texture2D::Release() 6819943701147 <0x02F83ED8> ID3D10Device::IASetInputLayout(0x02F83DE8) 6820042750148 <0x02F83ED8> ID3D10Device::IASetPrimitiveTopology(D3D10_PRIMITIVE_TOPOLOGY_POINTLIST) 6820061738152 <0x02F83ED8> ID3D10Device::IASetVertexBuffers(0, 1, 0x014E3AE4 --> { 0x0305BE38 }, 0x002CF5EC, 0x002CF5E8) 6820070976Sprites/fonts tend to use a lot of alpha blending, which doesn't really play nice with depth tests. As such, it makes a lot of sense to disable them.
Cancel
Save
clb: At the end of 2012, the positions of jupiter, saturn, mercury, and deimos are aligned so as to cause a denormalized flush-to-zero bug when computing earth's gravitational force, slinging it to the sun.
