macos - NSOpenGLView 子类不随窗口调整大小

Question

我一直在尝试让 NSOpenGLView 在调整窗口大小时正确调整大小，但我不断收到无法解释的奇怪行为。看起来像这样:

原始(一开始的样子):

调整大小后:

这是我的调整大小代码:

- (void)reshape
{
    [super reshape];

    CGLLockContext([[self openGLContext] CGLContextObj]);

    NSRect viewRectPoints = [self bounds];

#if SUPPORT_RETINA_RESOLUTION

    NSRect viewRectPixels = [self convertRectToBacking:viewRectPoints];

#else //if !SUPPORT_RETINA_RESOLUTION

    NSRect viewRectPixels = viewRectPoints;

#endif // !SUPPORT_RETINA_RESOLUTION

    [self resizeWithWidth:viewRectPixels.size.width
                  AndHeight:viewRectPixels.size.height];

    CGLUnlockContext([[self openGLContext] CGLContextObj]);
}

- (void) resizeWithWidth:(GLuint)width AndHeight:(GLuint)height
{
    glViewport(0, 0, width, height);

    m_width = width;
    m_height = height;
}

我正在使用:“glViewport(0, 0, m_width, m_height);”每当我调用 glDrawArrays();

有人可以帮忙吗？

Answer 1

调整窗口大小时，您还应该设置投影矩阵以反射(reflect)新尺寸。您没有发布设置/绘图代码，但通常看起来像这样:

glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(...); // or glFrustum(), glOrtho(), gluOrtho2D(), ...
glMatrixMode(GL_MODELVIEW);