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C-/C++-Quelltext

Texture2DImpl::Texture2DImpl(ID3D11DevicePtr device, int width, int height, GPUInterface::ColorFormat format, void* data)
{
    /* Fill out texture desc */
    D3D11_TEXTURE2D_DESC desc;
    desc.Width = width;
    desc.Height = height;
    desc.MipLevels = 1; /* TODO: Allow specifiying */
    desc.ArraySize = 1;
    desc.Format = Utils::ColorFormatToDXFormat (format);
    desc.SampleDesc.Count = 1;
    desc.SampleDesc.Quality = 0;
    desc.Usage = D3D11_USAGE_IMMUTABLE;
    desc.BindFlags = D3D11_BIND_SHADER_RESOURCE;
    desc.CPUAccessFlags = 0;
    desc.MiscFlags = 0;

    /* As we are immutable, init subresource data now. */
    D3D11_SUBRESOURCE_DATA srd;
    srd.pSysMem = data;
    srd.SysMemPitch = Utils::GetPitch (width, format);
    srd.SysMemSlicePitch = 0;

    /* Create */
    HRESULT hr = device->CreateTexture2D (&desc, &srd, &m_texture);
    if (FAILED (hr))
    {
        throw std::exception ("Failed to create texture");
    }

    CreateSrvAndSamplerState (device, format);
}

C-/C++-Quelltext

void Texture2DImpl::CreateSrvAndSamplerState (ID3D11DevicePtr device, GPUInterface::ColorFormat format)
{
    /* And now create the resource view for it */
    D3D11_SHADER_RESOURCE_VIEW_DESC srvd;
    srvd.Format = Utils::ColorFormatToDXFormat (format);
    srvd.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D;
    srvd.Texture2D.MipLevels = -1;
    srvd.Texture2D.MostDetailedMip = 0;

    HRESULT hr = device->CreateShaderResourceView (m_texture, &srvd, &m_srv);
    if (FAILED(hr))
    {
        throw std::exception ("Failed to create shader resource view");
    }

    /* And the sampler state */
    D3D11_SAMPLER_DESC sd;

    sd.Filter = D3D11_FILTER_MIN_MAG_MIP_LINEAR; /* TODO: Allow specificying */
    sd.AddressU = D3D11_TEXTURE_ADDRESS_CLAMP;
    sd.AddressV = D3D11_TEXTURE_ADDRESS_CLAMP;
    sd.AddressW = D3D11_TEXTURE_ADDRESS_CLAMP;
    sd.MipLODBias = 0;
    sd.MaxAnisotropy = 1; /* TODO: Allow specifying */
    sd.ComparisonFunc = D3D11_COMPARISON_NEVER;
    sd.BorderColor[0] = 0.0f;   sd.BorderColor[1] = 0.0f;   sd.BorderColor[2] = 0.0f;   sd.BorderColor[3] = 0.0f;
    sd.MinLOD = 0;
    sd.MaxLOD = D3D11_FLOAT32_MAX;

    hr = device->CreateSamplerState (&sd, &m_sampler);
    if (FAILED (hr)) {
        throw std::exception ("Failed to create sample state.");
    }
}