请教个问题关于 shader的坐标变换后的坐标范围的问题 – 计算机图形学与混合现实在线平台

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- 2020年7月3日 at 下午4:38 #6732 Score: 0
  
  ranran
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  在shader中:’gl_Position = projectionMatrix * viewMatrix * modelMatrix * position4;’
  模型坐标范围=>position4M{+无穷大,-无穷大},经过模型变换后(modelMatrix * position4)成了世界坐标系下的点worldPosition,此时点worldPosition的值的范围是什么?
  worldPosition经过视图矩阵变换(viewMatrix * modelMatrix * position4)后=>viewPosition ,
  此时的坐标的取值范围是否是 -1,1
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