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1.发明授权Apparatus and method for relating a point of selection to an object in a graphics display system 失效将选择点与图形显示系统中的对象相关联的装置和方法
公开(公告)号：US5329613A
公开(公告)日：1994-07-12
申请号：US58991
申请日：1993-05-06
CPC分类号： G06F3/04842 , G06T15/30
摘要： Apparatus and methods for picking three dimensional objects from images depicted on a video display. The displayed objects are selectively rerendered. During such rerendering the object pixels are compared in depth to the data in a Z buffer for determining visibility. The number and size of the objects subject to rerendering by the rasterization processor is constrained by using the front end graphics processor to define object extents and by rerendering only extents which have been clipped to the boundaries of the pick window. The rerendering operation does not alter the three dimensional graphics image stored in and repetitively scanned from the frame buffer. Selection between multiple objects within the pick window can include a weighted comparison using a pick plane memory to store visibility data by object.
摘要翻译： 用于从视频显示器上描绘的图像中拾取三维物体的装置和方法。 显示的对象被选择性地重新呈现。 在这种重新渲染期间，将目标像素与Z缓冲器中的数据进行深度比较以确定可视性。 通过使用前端图形处理器来定义对象范围并且仅重新渲染已经被剪辑到选择窗口的边界的范围，限制由光栅化处理器重新渲染的对象的数量和大小。 退回操作不会改变存储在帧缓冲器中并重复扫描的三维图形图像。 选择窗口内的多个对象之间的选择可以包括使用拾取平面存储器按对象存储可见性数据的加权比较。
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公开(公告)号：US5452412A
公开(公告)日：1995-09-19
申请号：US109414
申请日：1993-08-19
摘要： A graphics processor including an interface for providing triangle primitives and line primitives representing a graphical image, a line drawer for receiving line primitives and for rendering the line primitives, and a triangle interpolator for receiving the triangle primitives from the interface and for providing line primitives therefrom to the line drawer, wherein the interface includes a register for storing graphics image line primitives and for selectively providing the stored line primitives to the line drawer.
摘要翻译： 一种图形处理器，包括用于提供表示图形图像的三角形图元和线图元的接口，用于接收线图元和用于渲染线图元的线抽屉，以及用于从界面接收三角形图元并用于从其提供线图元的三角形插值器 其中所述接口包括用于存储图形图像线原语的寄存器，并且用于选择性地将所存储的线原语提供给线抽屉。
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公开(公告)号：US5457775A
公开(公告)日：1995-10-10
申请号：US122343
申请日：1993-09-15
CPC分类号： G06T15/80 , G06T15/005
摘要： A graphics processor including an interface for providing triangle primitives representing a graphics image, a triangle interpolator coupled to the interface for interpolating a triangle primitive and serially computing multiple line primitives from the triangle primitive, a line renderer coupled to the triangle interpolator for receiving a line primitive from the triangle interpolator and for providing pixels representing the line primitive while the triangle interpolator is computing another line primitive.
摘要翻译： 包括用于提供表示图形图像的三角形图元的接口的图形处理器，耦合到接口的三角形内插器，用于内插三角形原语，并且从三角形原语串行地计算多个线基元;线渲染器，耦合到三角形插值器，用于接收线 来自三角形内插器的原始图形，并且用于在三角形插值器计算另一行图元时提供表示线原语的像素。
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公开(公告)号：US5339394A
公开(公告)日：1994-08-16
申请号：US924357
申请日：1992-07-31
CPC分类号： G06F9/52 , G06F9/3824 , G06F9/3879
摘要： A data processing system is provided that includes a plurality of processors each including a circuit for providing a busy signal. The system also includes a plurality of registers for storing data wherein each register is dedicated to a selected processor or a selected set of processors. A control circuit is provided for receiving the busy signals and prohibiting storage from an external device to the registers dedicated a processor when that processor provides a busy signal.
摘要翻译： 提供了一种数据处理系统，其包括多个处理器，每个处理器包括用于提供忙信号的电路。 该系统还包括用于存储数据的多个寄存器，其中每个寄存器专用于所选择的处理器或所选择的一组处理器。 提供控制电路，用于当该处理器提供忙信号时，接收忙信号并禁止从处理器专用于寄存器的存储器。
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