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我一直在試圖弄清楚如何調整eaglview上的圖紙視圖的大小,而不是默認的320x480尺寸。我的Eaglview附加到UIViewController。我真正想要做的是找出viewrenderbuffer從哪裏調用它的寬度和高度參數。嘗試調整Eaglview顯示的圖像取決於風景或人像照片
在下面的代碼中,我可以看到背景寬度和高度取自綁定的viewRenderbuffer和renderbufferstorage調用。我不想使用屏幕默認的320x480,因爲如果我在縱向視圖上顯示橫向照片,它將伸展出來,反之亦然。
- (void)reshapeFramebuffer
{
glBindRenderbufferOES(GL_RENDERBUFFER_OES, viewRenderbuffer);
[context renderbufferStorage:GL_RENDERBUFFER_OES fromDrawable:(CAEAGLLayer*)self.layer];
glGetRenderbufferParameterivOES(GL_RENDERBUFFER_OES, GL_RENDERBUFFER_WIDTH_OES, &backingWidth);
glGetRenderbufferParameterivOES(GL_RENDERBUFFER_OES, GL_RENDERBUFFER_HEIGHT_OES, &backingHeight);
// This application only needs color. If depth and/or stencil are needed, ensure they are also resized here.
//Debug.h
rt_assert(GL_FRAMEBUFFER_COMPLETE_OES == glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES));
glCheckError();
}