OpenGL 改变方向导致 iPad 重新启动

发布于 2024-11-09 16:46:19 字数 1291 浏览 3 评论 0原文

我的 iPad 应用程序中存在 openGL 和方向问题。该问题仅发生在 4.3+ 设备上。 4.2 设备不会出现这种情况。

当我以任何方向启动应用程序并绘制时，它都会正确绘制，但是当我更改方向并尝试绘制时，iPad 会自行重新启动。重新启动发生在通话中

[context presentRenderbuffer:GL_RENDERBUFFER_OES];

这是我在layoutSubviews中使用的代码：

-(void) layoutSubviews {
    [EAGLContext setCurrentContext:context];

    glBindRenderbufferOES(GL_RENDERBUFFER_OES, viewRenderbuffer);
    [context renderbufferStorage:GL_RENDERBUFFER_OES fromDrawable:(id<EAGLDrawable>) [self layer]];

    glGetRenderbufferParameterivOES(GL_RENDERBUFFER_OES, GL_RENDERBUFFER_WIDTH_OES, &backingWidth);
    glGetRenderbufferParameterivOES(GL_RENDERBUFFER_OES, GL_RENDERBUFFER_HEIGHT_OES, &backingHeight);

    glScissor(0, 0, [self bounds].size.width, [self bounds].size.height);

    NSLog(@"%f -  %f", [self bounds].size.width, [self bounds].size.height);

    glBindRenderbufferOES(GL_RENDERBUFFER_OES, depthRenderbuffer);
    glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_DEPTH_COMPONENT16_OES, backingWidth, backingHeight);

    [self erase];
    [self drawExisting];

    glBindRenderbufferOES(GL_RENDERBUFFER_OES, viewRenderbuffer);
    [context presentRenderbuffer:GL_RENDERBUFFER_OES];
}

我的问题是，4.3有什么变化吗？我找不到任何说明这一点的内容。或者，如果您发现我的代码有任何问题，请告诉我。

原文

I have a problem with openGL and orientation in my iPad app. The problem only happens with 4.3+ devices. It doesn't happen with 4.2 devices.

When I start the application with any orientation and draw, it draws correctly, but when I change the orientation, and try to draw, the iPad restarts itself. The restart happens on the call

[context presentRenderbuffer:GL_RENDERBUFFER_OES];

This is the code I use in layoutSubviews:

-(void) layoutSubviews {
    [EAGLContext setCurrentContext:context];

    glBindRenderbufferOES(GL_RENDERBUFFER_OES, viewRenderbuffer);
    [context renderbufferStorage:GL_RENDERBUFFER_OES fromDrawable:(id<EAGLDrawable>) [self layer]];

    glGetRenderbufferParameterivOES(GL_RENDERBUFFER_OES, GL_RENDERBUFFER_WIDTH_OES, &backingWidth);
    glGetRenderbufferParameterivOES(GL_RENDERBUFFER_OES, GL_RENDERBUFFER_HEIGHT_OES, &backingHeight);

    glScissor(0, 0, [self bounds].size.width, [self bounds].size.height);

    NSLog(@"%f -  %f", [self bounds].size.width, [self bounds].size.height);

    glBindRenderbufferOES(GL_RENDERBUFFER_OES, depthRenderbuffer);
    glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_DEPTH_COMPONENT16_OES, backingWidth, backingHeight);

    [self erase];
    [self drawExisting];

    glBindRenderbufferOES(GL_RENDERBUFFER_OES, viewRenderbuffer);
    [context presentRenderbuffer:GL_RENDERBUFFER_OES];
}

My question is, did anything change is 4.3? I cant find anything that states that. Or if you see anything wrong in my code, please let me know.

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