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GAMES101-HW/hw1/main.cpp
Line 51: float top = -tan(DEG2RAD(eye_fov/2.0f) * abs(zNear));
①这里的括号可能是手误? 应该为tan(DEG2RAD(eye_fov/2.0f)) * abs(zNear);
Line 56: 0,0,(zNear+zFar)/(zNear-zFar),(2zNearzFar)/(zFar-zNear),
②4x4矩阵的第三行第四列,漏掉一个负号?refer to http://www.songho.ca/opengl/gl_projectionmatrix.html
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