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51. 发明授权

US09424685B2 Unified rasterization and ray tracing rendering environments 有权
标题翻译：统一光栅化和光线跟踪渲染环境
公开(公告)号：US09424685B2
公开(公告)日：2016-08-23
申请号：US13953754
申请日：2013-07-30
申请人： John W. Howson , Luke Tilman Peterson
发明人： John W. Howson , Luke Tilman Peterson
IPC分类号： G06T15/06 , G06T15/80 , G06T15/00
CPC分类号： G06T15/06 , G06T1/20 , G06T15/005 , G06T15/80 , G06T2200/04 , G06T2200/28 , G06T2207/20021
摘要： A graphics processor architecture provides for scan conversion and ray tracing approaches to visible surface determination as concurrent and separate processes. Surfaces can be identified for shading by scan conversion and ray tracing. Data produced by each can be normalized, so that instances of shaders, being executed on a unified shading computation resource, can shade surfaces originating from both ray tracing and rasterization. Such resource also may execute geometry shaders. The shaders can emit rays to be tested for intersection by the ray tracing process. Such shaders can complete, without waiting for those emitted rays to complete. Where scan conversion operates on tiles of 2-D screen pixels, the ray tracing can be tile aware, and controlled to prioritize testing of rays based on scan conversion status. Ray population can be controlled by feedback to any of scan conversion, and shading.
摘要翻译：图形处理器架构提供扫描转换和光线跟踪方法，将可视表面确定作为并行和单独的进程。可以通过扫描转换和光线跟踪来识别阴影的表面。由每个产生的数据可以被归一化，使得在统一的阴影计算资源上执行的着色器的实例可以遮蔽源自光线跟踪和光栅化的表面。这样的资源也可以执行几何着色器。着色器可以通过光线跟踪过程发射待测试的交叉点。这样的着色器可以完成，而不用等待那些发射的光线完成。在扫描转换对2-D屏幕像素的平铺进行扫描的地方，光线跟踪可以是平铺感知的，并且根据扫描转换状态来控制以优先考虑光线的优先级。可以通过反馈来控制光线群体的任何扫描转换和阴影。

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