[XYZ]

zNear = -zNear;
zFar = -zFar;
Eigen::Matrix4f projection = Eigen::Matrix4f::Identity();
projection = Eigen::Matrix4f::Zero();
eye_fov = eye_fov / 180 * MY_PI;
projection(0,0) = zNear;
projection(1,1) = zNear;
projection(2,2) = zNear + zFar;
projection(2,3) = -zNear * zFar;
projection(3,2) = 1.0;
projection(3,3) = 0.0;

Eigen::Matrix4f ort = Eigen::Matrix4f::Identity();;

float t = tan(eye_fov / 2) * abs(zNear);
float r = t * aspect_ratio;
ort(0,0) = 1.0 / r;
ort(1,1) = 1.0 / t;
ort(2,2) = 2.0 / (zFar – zNear);
ort(2,3) = (zNear + zFar) / 2;
projection = ort * projection;
return projection;

[XYZ]

应该是你的projection矩阵哪里出现的问题，你需要讲znear和zfar取负数 只在求top的时候使用距离时abs用绝对值。

[XYZ]

谢谢你的解答，我已经解决了这个问题，应该是透视矩阵的错误导致的

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