Function createResourceForPass

Source/Falcor/RenderGraph/ResourceCache.cpp:122–192

}

inline ref<Resource> createResourceForPass(
    ref<Device> pDevice,
    const ResourceCache::DefaultProperties& params,
    const RenderPassReflection::Field& field,
    bool resolveBindFlags,
    const std::string& resourceName
)
{
    uint32_t width = field.getWidth() ? field.getWidth() : params.dims.x;
    uint32_t height = field.getHeight() ? field.getHeight() : params.dims.y;
    uint32_t depth = field.getDepth() ? field.getDepth() : 1;
    uint32_t sampleCount = field.getSampleCount() ? field.getSampleCount() : 1;
    auto bindFlags = field.getBindFlags();
    auto arraySize = field.getArraySize();
    auto mipLevels = field.getMipCount();

    ResourceFormat format = ResourceFormat::Unknown;

    if (field.getType() != RenderPassReflection::Field::Type::RawBuffer)
    {
        format = field.getFormat() == ResourceFormat::Unknown ? params.format : field.getFormat();
        if (resolveBindFlags)
        {
            ResourceBindFlags mask = ResourceBindFlags::UnorderedAccess | ResourceBindFlags::ShaderResource;
            bool isOutput = is_set(field.getVisibility(), RenderPassReflection::Field::Visibility::Output);
            bool isInternal = is_set(field.getVisibility(), RenderPassReflection::Field::Visibility::Internal);
            if (isOutput || isInternal)
                mask |= ResourceBindFlags::DepthStencil | ResourceBindFlags::RenderTarget;
            auto supported = pDevice->getFormatBindFlags(format);
            mask &= supported;
            bindFlags |= mask;
        }
    }
    else // RawBuffer
    {
        if (resolveBindFlags)
            bindFlags = ResourceBindFlags::UnorderedAccess | ResourceBindFlags::ShaderResource;
    }
    ref<Resource> pResource;

    switch (field.getType())
    {
    case RenderPassReflection::Field::Type::RawBuffer:
        pResource = pDevice->createBuffer(width, bindFlags, MemoryType::DeviceLocal);
        break;
    case RenderPassReflection::Field::Type::Texture1D:
        pResource = pDevice->createTexture1D(width, format, arraySize, mipLevels, nullptr, bindFlags);
        break;
    case RenderPassReflection::Field::Type::Texture2D:
        if (sampleCount > 1)
        {
            pResource = pDevice->createTexture2DMS(width, height, format, sampleCount, arraySize, bindFlags);
        }
        else
        {
            pResource = pDevice->createTexture2D(width, height, format, arraySize, mipLevels, nullptr, bindFlags);
        }
        break;