Method RequestHalfResDepth

Source/Engine/Graphics/RenderBuffers.cpp:82–115

}

GPUTexture* RenderBuffers::RequestHalfResDepth(GPUContext* context)
{
    // Skip if already done in the current frame
    const auto currentFrame = Engine::FrameCount;
    if (LastFrameHalfResDepth == currentFrame)
        return HalfResDepth;
    if (!MultiScaler::Instance()->IsReady())
        return DepthBuffer;

    auto format = DepthBuffer->Format();
    auto width = RenderTools::GetResolution(_width, ResolutionMode::Half);
    auto height = RenderTools::GetResolution(_height, ResolutionMode::Half);
    auto tempDesc = GPUTextureDescription::New2D(width, height, format, DepthBuffer->Flags());

    LastFrameHalfResDepth = currentFrame;
    if (HalfResDepth == nullptr)
    {
        // Missing buffer
        HalfResDepth = RenderTargetPool::Get(tempDesc);
        RENDER_TARGET_POOL_SET_NAME(HalfResDepth, "HalfResDepth");
    }
    else if (HalfResDepth->Width() != width || HalfResDepth->Height() != height || HalfResDepth->Format() != format)
    {
        // Wrong size buffer
        RenderTargetPool::Release(HalfResDepth);
        HalfResDepth = RenderTargetPool::Get(tempDesc);
        RENDER_TARGET_POOL_SET_NAME(HalfResDepth, "HalfResDepth");
    }

    // Generate depth
    MultiScaler::Instance()->DownscaleDepth(context, width, height, DepthBuffer, HalfResDepth->View());

    return HalfResDepth;
}

GPUTexture* RenderBuffers::RequestHiZ(GPUContext* context, bool fullRes, int32 mipLevels)
{