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我正在将场景渲染到纹理，然后在后续渲染中使用该纹理及其 depthBuffer 来应用一些效果（景深、绽放等）。

这是问题所在：我设法将 DepthStencilBuffer 设置为自定义表面并将我的场景渲染为纹理。场景渲染完美，没有深度问题。话虽如此，当使用纹理（自定义表面绑定到的）时，所有深度值都是 1.0

我怀疑对 device->clear 的调用会影响错误的表面，但即使禁用它们，它也无法解决任何问题。

这是实际的代码：

HRESULT hr = S_FALSE;

VCND3D* renderer = static_cast<VCND3D*>( VCNRenderCore::GetInstance() );
LPDIRECT3DDEVICE9 device = renderer->GetD3DDevice();

//device->EndScene();

VCNDXShaderCore* shaderCore = static_cast<VCNDXShaderCore*>( VCNDXShaderCore::GetInstance() );

VCNNode* rootNode = VCNNodeCore::GetInstance()->GetRootNode();

LPDIRECT3DSURFACE9 currentSurface;
device->GetRenderTarget(0, &currentSurface);

LPDIRECT3DSURFACE9 currentDepthBuffer;
device->GetDepthStencilSurface( &currentDepthBuffer );

///// INITIAL HDR RENDER : //////////////////////////////////////

hr = device->SetRenderTarget( 0, mInitialHDRSurface );
VCN_ASSERT( SUCCEEDED(hr) );

hr = device->SetDepthStencilSurface( mDepthSurface );
VCN_ASSERT( SUCCEEDED(hr) );

device->Clear(  0,
                NULL,
                D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER,
                D3DCOLOR_XRGB(100,100,100),
                1.0f,
                0 );

//device->BeginScene();
rootNode->Render();
//device->EndScene();

//hr = device->UpdateSurface( currentDepthBuffer, NULL, mDepthSurface, NULL );
//VCN_ASSERT( SUCCEEDED(hr) );

//////////// DOF EFFECT : /////////////////////////////////////////////////

hr = device->SetRenderTarget( 0, currentSurface );
VCN_ASSERT( SUCCEEDED(hr) );

device->SetRenderState(D3DRS_COLORWRITEENABLE, 
D3DCOLORWRITEENABLE_ALPHA | D3DCOLORWRITEENABLE_RED | D3DCOLORWRITEENABLE_GREEN | D3DCOLORWRITEENABLE_BLUE);

device->Clear(  0,
                NULL,
                D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER,
                D3DCOLOR_XRGB(100,100,100),
                1.0f,
                0 );

//device->BeginScene();

// Set DOF shader
VCNDXShader* dofShader = shaderCore->GetShader( sidDof );

// Field of view to cover full screen :
hr = device->SetFVF(D3DFVF_SCREEN);
VCN_ASSERT( SUCCEEDED(hr) );

// select the vertex buffer to display
hr = device->SetStreamSource(0, mScreenVertexBuffer, 0, sizeof(SCREENVERTEX));
VCN_ASSERT( SUCCEEDED(hr) );

// Draw the Dof result
hr = dofShader->GetEffect()->SetTechnique( "BaseTechnique" );
VCN_ASSERT( SUCCEEDED(hr) );
hr = dofShader->GetEffect()->SetTexture( "gInputImageTexture", mInitialHDRTexture );
VCN_ASSERT( SUCCEEDED(hr) );
hr = dofShader->GetEffect()->SetTexture( "gDepthTexture", mDepthTexture );
VCN_ASSERT( SUCCEEDED(hr) );
hr = dofShader->GetEffect()->SetFloat( "gMinDepth", 3.0f );
VCN_ASSERT( SUCCEEDED(hr) );
hr = dofShader->GetEffect()->SetFloat( "gMaxDepth", 7.0f );
VCN_ASSERT( SUCCEEDED(hr) );

dofShader->RenderPrimitive( 2, D3DPT_TRIANGLESTRIP );

hr = device->SetDepthStencilSurface( currentDepthBuffer );
VCN_ASSERT( SUCCEEDED(hr) );

这是纹理和表面的初始化，因为可能存在错误：

// Texture for the initial HDR Render (Before effects)
hr = device->CreateTexture(res.x, res.y, 1, D3DUSAGE_RENDERTARGET, D3DFMT_A32B32G32R32F, D3DPOOL_DEFAULT, &mInitialHDRTexture, 0);
VCN_ASSERT_MSG( SUCCEEDED(hr), _T("Unable to create initial HDR Render Texture") );

// Extract the associated surface for rendering
hr = mInitialHDRTexture->GetSurfaceLevel(0, &mInitialHDRSurface);
VCN_ASSERT( SUCCEEDED(hr) );

// Texture with depth of the scene
hr = device->CreateTexture(res.x, res.y, 1, D3DUSAGE_DEPTHSTENCIL, D3DFMT_D32F_LOCKABLE, D3DPOOL_DEFAULT, &mDepthTexture, 0);
VCN_ASSERT_MSG( SUCCEEDED(hr), _T("Unable to create depth texture") );

// Extract the associated surface for rendering
hr = mDepthTexture->GetSurfaceLevel(0, &mDepthSurface);
VCN_ASSERT( SUCCEEDED(hr) );

Note that no ASSERT is getting triggered (which is exactly what is pissing me off, I would like some errors as an indication of where to look)

Nic

4

1 回答 1

1

If I read your code correctly you clear mDepthSurface twice: first in INITIAL HDR RENDER section, then in DOF EFFECT. You either need to do a SetDepthStencilSurface before second clear, or not setting D3DCLEAR_ZBUFFER in that call. Otherwise second clear discards whatever is rendered by rootNode->Render() and at effect start you have all clear z-buffer.

于 2012-01-24T03:50:13.943 回答