多重採樣FBO忽略了深度測試

我已經修改了我的渲染引擎以使用多重採樣紋理，除了現在深度測試被忽略之外。多重採樣FBO忽略了深度測試

下面是我如何創建多重採樣FBO，

public MSAA_FBO(int WindowWidth, int WindowHeight) 
{ 
    this.width = WindowWidth; 
    this.height = WindowHeight; 

    GL.GenFramebuffers(1, out ID); 
    GL.BindFramebuffer(FramebufferTarget.Framebuffer, ID); 

    // Colour texture 
    GL.GenTextures(1, out textureColorBufferMultiSampled); 
    GL.BindTexture(TextureTarget.Texture2DMultisample, textureColorBufferMultiSampled); 
    GL.TexImage2DMultisample(TextureTargetMultisample.Texture2DMultisample, 4, PixelInternalFormat.Rgb8, WindowWidth, WindowHeight, true); 
    GL.FramebufferTexture2D(FramebufferTarget.Framebuffer, FramebufferAttachment.ColorAttachment0, TextureTarget.Texture2DMultisample, textureColorBufferMultiSampled, 0); 

    // Depth render buffer 
    GL.GenRenderbuffers(1, out RBO); 
    GL.BindRenderbuffer(RenderbufferTarget.RenderbufferExt, RBO); 
    GL.RenderbufferStorageMultisample(RenderbufferTarget.Renderbuffer, 4, RenderbufferStorage.DepthComponent, WindowWidth, WindowHeight); 
    GL.BindRenderbuffer(RenderbufferTarget.Renderbuffer, 0); 

    var status = GL.CheckFramebufferStatus(FramebufferTarget.Framebuffer); 
    Console.WriteLine("MSAA: " + status); 
    GL.BindFramebuffer(FramebufferTarget.Framebuffer, 0); 
}

執行的決心，

public void resolveToFBO(FBO outputFBO) 
{ 
    GL.BindFramebuffer(FramebufferTarget.DrawFramebuffer, outputFBO.ID); 
    GL.BindFramebuffer(FramebufferTarget.ReadFramebuffer, this.ID); 
    GL.BlitFramebuffer(0, 0, this.width, this.height, 0, 0, outputFBO.width, outputFBO.height, ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit, BlitFramebufferFilter.Nearest);  
}

和渲染圖像，

public void MSAAPass(Shader shader) 
{ 
    GL.UseProgram(shader.ID); 
    GL.BindFramebuffer(FramebufferTarget.Framebuffer, MSAAbuffer.ID); 
    GL.Viewport(0, 0, Width, Height); 

    GL.Enable(EnableCap.Multisample); 
    GL.ClearColor(System.Drawing.Color.Black); 
    GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit); 
    GL.Enable(EnableCap.DepthTest); 
    GL.Disable(EnableCap.Blend); 

    // Uniforms 
    Matrix4 viewMatrix = player.GetViewMatrix(); 
    GL.UniformMatrix4(shader.getUniformID("viewMatrix"), false, ref viewMatrix); 

    // Draw all geometry 
    DrawScene(shader); 

    GL.BindFramebuffer(FramebufferTarget.Framebuffer, 0); 
    MSAAbuffer.resolveToFBO(testBuffer); 
}

來源

2017-06-18 livin_amuk

無論誰投票將其作爲一個簡單的印刷錯誤_這是一個傻瓜 – MickyD

你的多重採樣FBO沒有深度緩衝區，因此深度測試不起作用。雖然您實際上創建了一個帶有GL_DEPTH_COMPONENT格式的多重採樣渲染緩衝區，但您忘記將其作爲FBO的GL_DEPTH_ATTACHMENT附加。您需要在MSAA_FBO()功能中添加glFramebufferRenderbuffer()呼叫。

來源

2017-06-18 00:54:53 derhass

啊！謝謝。 –

多重採樣FBO忽略了深度測試

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