Accessing GBuffers/Backbuffer from plugin code

Development Rendering
1

Hi. I’ve been trying to access the GBuffer or back buffer textures from C++ plugin code without much success. I’m hoping someone can point me in the right direction here.

The GBuffers seem to live on FSceneRenderTargets.

When the above code runs the GBufferA, GBufferB etc textures are all null. They seem to be released by the time the enqueued render commands fire.

  1. Are the GBuffer[A-D] textures on FSceneRenderTargets the actual g buffer textures?
  2. Is there a way for plugin code to run before those have been released?
  3. Am I grabbing the correct FSceneRenderTargets?

Secondly if I can’t get the g buffers, maybe I can get the back buffer.

This texture seems to not be the final result. It’s very dark on one machine, and extremely washed out on a different machine. What’s the correct way to find the back buffer?

I’ve spent several days poking around on this so any help is appreciated. Thanks.

2

Hello!!!

This is another way than not to use SceneCapu：

Source Code by BaiPaoXiaoDao

    ENQUEUE_UNIQUE_RENDER_COMMAND_ONEPARAMETER(
        DZRenderSutioBP_InterceptSceneBaseColor,
        UTexture2D*, vTextureAsset, TextureAsset,
        {
            /*if (!IsInRenderingThread())
            return;*/
            FRHICommandListImmediate& RHICmdList = GRHICommandList.GetImmediateCommandList();
            //计数加一避免Render完成后直接清空了GBuffer,但会慢一帧，你猜
            FSceneRenderTargets::Get(RHICmdList).AdjustGBufferRefCount(RHICmdList, 1);
            static const FString ScrollingMessage(TEXT("Hello World: "));
            GEngine->AddOnScreenDebugMessage(-1, 0.2f, FColor::Red, ScrollingMessage);
            FSceneRenderTargets& SceneContext = FSceneRenderTargets::Get(RHICmdList);
            if (SceneContext.GBufferA)
            {
                FTexture2DRHIRef vTextTarget = SceneContext.GetGBufferATexture();
                FString vSiceStr = FString::Printf(TEXT("FSceneRenderTargets GBufferA Size = %d*%d"), vTextTarget->GetSizeX(), vTextTarget->GetSizeY());

                GEngine->AddOnScreenDebugMessage(-1, 0.2f, FColor::Red, vSiceStr);
            }
            //移除
            FSceneRenderTargets::Get(RHICmdList).AdjustGBufferRefCount(RHICmdList, -1);
        }
    );
3

Where should I insert the code? I want to test this

4

Did you get anywhere with that code?