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• Pixel shader wierd compilation error

  - by ytrewq

  hi, I'm experiencing with shaders a bit and I keep getting this weird compilation error that's driving me crazy! the following pixel shader code snippet: DirectionVector = normalize(f3LightPosition[i] - PixelPos); LightVec = PixelNormal - DirectionVector; // Get the light strenght factor LightStrFactor = float(abs((LightVec.x + LightVec.y + LightVec.z) / 3.0f)); // TEST!!! LightStrFactor = 1.0f; // Add this light to the total light on this pixel LightVal += f4Light[i] * LightStrFactor; works perfectly, but as soon as i remove the "LightStrFactor = 1.0f;" line, i.e. letting 'LightStrFactor ' value be the result of the calculation above, it fails to compile the shader. LightStrFactor is a float LightVal & f4Light[i] are float4 All the rest are float3. my question is, besides why it doesn't compile, is how come DX compiler cares about the value of a float? even if my values are incorrect, shouldn't it be run-time? the shader compilation code is this: /* Compile the bitch */ if (FAILED(D3DXCompileShaderFromFile(fileName, NULL, NULL, "PS_MAIN", "ps_2_0", 0, &this->m_pCode, NULL, &this->m_constantTable))) GraphicException("Failed to compile pixel shader!"); // <-- gets here :( if (FAILED(g_D3dDevice->CreatePixelShader( (DWORD*)this->m_pCode->GetBufferPointer(), &this->m_hPixelShader ))) GraphicException("Failed to create pixel shader!"); this->m_fLoaded = true; any help is appreciated thanks!!! :]

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• How to mask DLL in .NET ?

  - by ytrewq

  Let's say I have a DLL that provides math calculus functions. To use it, I include the using Colhq.Math.Basic; namespace. How could I use it by adding a statement like using Blala.Functions.Math; ? So how could I use everything (methods, enums, etc.) from a DLL by using a different namespace ? Is there a one-shot way to wrap or mask a DLL ?

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• Is there a design pattern for this ?

  - by ytrewq

  I have a component that needs to call a specific service depending on the input it receives. So my component has to look at the input and based on a configuration that says "for this input call this service with this data" needs to call the proper service. The services have a common signature method and a specific one (each). I thought about an abstract class that includes the signatures for all three methods. The implementation for the two services will override all three methods (throwing NotImplementedException for the methods that are not supported by current service). A component that could be initialized with a map (that for each input type will have the type of the service to be called) will also be defined. Do you have a better approach to cope this scenario ?

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