论文标题
PRTT：预先计算的辐射转移纹理
PRTT: Precomputed Radiance Transfer Textures
论文作者
论文摘要
预计的辐射转移（PRT）可以在实时帧速率上实现高质量的光泽材料渲染。 PRT涉及对场景特定点处球形谐波（SH）系数的k维转移载体的预定。大多数先前的艺术预先计算在网格顶点的转移，并插入内部点的颜色。他们需要更优质的网状饰面来进行高质量的效果图。在本文中，我们探索并介绍纹理用于存储转移的使用。使用传输纹理从传输存储和采样中解析网状分辨率，这对于光泽渲染尤其有用。我们通过对其他纹理进行了预定，进一步证明了光滑的反射。我们彻底讨论转移纹理的实际方面，并在实时渲染应用中分析其性能。我们显示等效或更高的渲染质量和FPS，并在几个具有挑战性的场景中展示结果。
Precomputed Radiance Transfer (PRT) can achieve high quality renders of glossy materials at real-time framerates. PRT involves precomputing a k-dimensional transfer vector of Spherical Harmonic (SH) coefficients at specific points for a scene. Most prior art precomputes transfer at vertices of the mesh and interpolates color for interior points. They require finer mesh tessellations for high quality renderings. In this paper, we explore and present the use of textures for storing transfer. Using transfer textures decouples mesh resolution from transfer storage and sampling which is useful especially for glossy renders. We further demonstrate glossy inter-reflections by precomputing additional textures. We thoroughly discuss practical aspects of transfer textures and analyze their performance in real-time rendering applications. We show equivalent or higher render quality and FPS and demonstrate results on several challenging scenes.
