标题： 可变率纹理压缩：使用JPEG的实时渲染 显示英文标题

标题： Variable-Rate Texture Compression: Real-Time Rendering with JPEG

摘要： 尽管如JPEG这样的可变率压缩图像格式被广泛用于高效编码图像，但由于随机访问单个纹理元素等特殊要求，它们尚未应用于实时渲染。 在本文中，我们研究了在现代GPU上使用JPEG格式实现可变率纹理压缩的可行性，以及它与GPU友好的固定率压缩方法BC1和ASTC的比较。 使用延迟渲染管线，我们能够识别给定帧所需的块子集，解码这些块，并对帧缓冲区的像素进行着色。 尽管我们的方法每像素需要额外的$\sim$0.17位，与BC1相比，JPEG保持了显著更好的质量和压缩率，并且根据图像类型，其性能优于或与ASTC相当。 JPEG渲染管线在RTX 4090上的渲染时间增加不到0.3毫秒，证明了即使在VR中，现代GPU上复杂的可变率压缩方案也是可行的。 源代码和数据集可在以下位置获取：https://github.com/elias1518693/jpeg_textures 显示英文摘要

摘要： Although variable-rate compressed image formats such as JPEG are widely used to efficiently encode images, they have not found their way into real-time rendering due to special requirements such as random access to individual texels. In this paper, we investigate the feasibility of variable-rate texture compression on modern GPUs using the JPEG format, and how it compares to the GPU-friendly fixed-rate compression approaches BC1 and ASTC. Using a deferred rendering pipeline, we are able to identify the subset of blocks that are needed for a given frame, decode these, and colorize the framebuffer's pixels. Despite the additional $\sim$0.17 bit per pixel that we require for our approach, JPEG maintains significantly better quality and compression rates compared to BC1, and depending on the type of image, outperforms or competes with ASTC. The JPEG rendering pipeline increases rendering duration by less than 0.3 ms on an RTX 4090, demonstrating that sophisticated variable-rate compression schemes are feasible on modern GPUs, even in VR. Source code and data sets are available at: https://github.com/elias1518693/jpeg_textures