OpenGL在特定条件下的崩溃－－浮点协处理器异常

[alphapaopao]

OpenGL在特定条件下的崩溃－－浮点协处理器异常


程序源代码下载
http://alphasun.icpcn.com/alphasun/download/rubber-banding-OpenGL.rar



崩溃条件
1、调用 gluLookAt
2、_control87(851971, -1); 告诉浮点协处理器 遇到 异常 要报告
3、启用 glEnable(GL_COLOR_LOGIC_OP);
4、画点

glBegin(GL_POINTS);
glVertex3d(0,0,0);
glEnd();


在第四步就会崩溃。不同的机器上可能出现不同类型的 exception。大致种类如下：
1、float devide by zero
2、float overflow
3、float invalid operation

程序源代码下载
http://alphasun.icpcn.com/alphasun/download/rubber-banding-OpenGL.rar



源代码片段

// EXCEPTION AG 2004
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
///################################
gluLookAt(m_pntViewer.x,
m_pntViewer.y,
m_pntViewer.z,
m_pntTarget.x,
m_pntTarget.y,
m_pntTarget.z,
m_vUp.x,
m_vUp.y,
m_vUp.z);

int old = _control87(0, 0);
old = _CW_DEFAULT;

_control87(851971, -1);

//####################################################
//
glEnable(GL_COLOR_LOGIC_OP);
glDisable(GL_COLOR_LOGIC_OP);
glLogicOp(GL_XOR);

glBegin(GL_POINTS);
glVertex3d(0,0,0);
glEnd();
glDisable(GL_COLOR_LOGIC_OP);
//####################################################
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

[alphapaopao]

up

[zhucde]

收藏.

你上次的那个代码还是没有编译成功.
还是那个VECTOR的问题

[alphapaopao]

应该没问题的阿。是不是缺少文件阿？

[alphapaopao]

有点眉目。明天再去看程序

[alphapaopao]

仍然会崩溃，代码如下

// EXCEPTION AG 2004
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
//
_control87(851971, -1);
glEnable(GL_COLOR_LOGIC_OP);
glLogicOp(GL_XOR);

glBegin(GL_POINTS);
glVertex3d(0,0,0);
glEnd();
glDisable(GL_COLOR_LOGIC_OP);
//####################################################

[alphapaopao]

zhucde(【風間苍月】) 分数都给你了