如何在DirectX中实现模具缓冲区 [英] How to implement stencil buffer in DirectX

问题描述

我正在尝试实施第一人称射击游戏，在其中我需要查看狙击步枪的景象.我认为模板缓冲区对于实现狙击视图很有用.我正在努力做到这一点，但我无法做到.我经历了很多教程，但是它们只是使用模板缓冲区来讨论阴影，而且难以理解.

我试图做的是这样的:

1)禁用z缓冲区和颜色缓冲区
2)启用模板缓冲区
3)考虑到模具的功能和其他功能

Hi,

I am trying to implement a first person shooter game in which I need to make view for the sniper rifle. I thought stencil buffer can be useful to implement the sniper view. I am trying to make that but I am not able to get it. I went through lots of tutorials, but they just talk shadowing using stencil buffer, and are not understandable.

What I have tried to do is this:

1) disable the z buffer and color buffer
2) enable the stencil buffer
3) given the stencil fun val and other things

pd3dDevice->(SetRenderState(D3DRS_ZWRITEENABLE, false);
pd3dDevice->(SetRenderState(D3DRS_COLORWRITEENABLE, false);
pd3dDevice->(SetRenderState(D3DRS_STENCILENABLE, true);
pd3dDevice->(SetRenderState(D3DRS_STENCILFUNC, D3DCMP_ALWAYS);
pd3dDevice->(SetRenderState(D3DRS_STENCILZFAIL, D3DSTENCILOP_KEEP);
pd3dDevice->(SetRenderState(D3DRS_STENCILFAIL, D3DSTENCILOP_KEEP);
pd3dDevice->(SetRenderState(D3DRS_STENCILREF, 5);
pd3dDevice->(SetRenderState(D3DRS_STENCILMASK, 0);

然后我绘制我的模具形状(这是我绘制的四边形，是屏幕疏远的:pd3dDevice->renderQuad();

然后启用颜色和z缓冲区.请帮帮我，如果可能的话，请提供一些参考代码.

Then I am drawing my stencil shape (which is a quad- quad I am drawing is screen aliened:pd3dDevice->renderQuad();

Then I am enabling the color and the z buffer. Please help me out and if possible give some reference code.

推荐答案

尝试添加以下行:

Try to add this line:

g_pd3dDevice->SetRenderState( D3DRS_STENCILPASS, D3DSTENCILOP_INCR );

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