bool LightShaderClass::SetConstantBufferParameters(ID3D11DeviceContext* pDeviceContext, PointLightClass** ppLights, UINT NrOfLights, ObjectClass* pObject, FogClass* pDrawDistFog, CameraClass* pCamera)
{
HRESULT result;
D3D11_MAPPED_SUBRESOURCE mappedResource;
LightConstantBuffer* dataPtr;
unsigned int bufferNumber;
// Lock the constant buffer so it can be written to.
result = pDeviceContext->Map(mLightBuffer, 0, D3D11_MAP_WRITE_DISCARD, 0, &mappedResource);
if (FAILED(result))
{
return false;
}
// Get a pointer to the data in the constant buffer.
dataPtr = (LightConstantBuffer*)mappedResource.pData;
ModelClass* pModel = pObject->GetModel();
MatrialDesc *pMaterials = pModel->GetMaterials();
UINT oCount = pModel->GetObjectCount();
dataPtr->LightCount_FogRange_ObjectCount_Unused = XMFLOAT4((float)NrOfLights, pDrawDistFog->GetRange(), (float)oCount, 0);
dataPtr->fogColor = pDrawDistFog->GetColor();
dataPtr->CamPos = pCamera->GetPosition();
for (UINT i = 0; i < NrOfLights; i++)
{
dataPtr->lights[i].Pos = ppLights[i]->GetLightPos();
XMFLOAT3 color = ppLights[i]->GetLightColor();
dataPtr->lights[i].Color_LightRange = XMFLOAT4(color.x, color.y, color.z, ppLights[i]->GetRadius());
}
for (UINT i = 0; i < oCount; i++)
{
dataPtr->materials[i].Ambient = pMaterials[i].Ambient;
dataPtr->materials[i].Diffuse = pMaterials[i].Diffuse;
dataPtr->materials[i].Specular = pMaterials[i].Specular;
dataPtr->materials[i].Reflectivity = pMaterials[i].Reflectivity;
dataPtr->materials[i].SpecPower_AlphaClip_Unused_Unused = XMFLOAT4(pMaterials[i].SpecPower, pMaterials[i].AlphaClip, 0, 0);
}
// Unlock the constant buffer.
pDeviceContext->Unmap(mLightBuffer, 0);
// Set the position of the constant buffer in the vertex shader.
bufferNumber = 0;
// Set the constant buffer in the shader with the updated values.
pDeviceContext->PSSetConstantBuffers(bufferNumber, 1, &mLightBuffer);
return true;
}
