{"id":873,"date":"2022-09-01T08:00:00","date_gmt":"2022-09-01T08:00:00","guid":{"rendered":"https:\/\/dev-intel-gap.pantheonsite.io\/?p=873"},"modified":"2022-09-01T08:00:00","modified_gmt":"2022-09-01T08:00:00","slug":"intel-arc-graphics-ray-tracing","status":"publish","type":"post","link":"https:\/\/game.intel.com\/sa\/stories\/intel-arc-graphics-ray-tracing\/","title":{"rendered":"Real-Time Ray Tracing on Intel\u00ae Arc\u2122 Graphics"},"content":{"rendered":"<p>The tech which makes 3D movies look stunning has arrived in gaming and Intel Arc GPUs are fit to enhance games visuals with rays. Ready to step into the light with Intel?<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"Intel Arc A-Series Graphics Ray Tracing Technology Deep Dive\" width=\"1200\" height=\"675\" src=\"https:\/\/www.youtube.com\/embed\/J5eIOv-CrB8?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p>Intel has been unveiling Intel Arc graphics\u2019 suite of tech features lately, including <a href=\"https:\/\/game.intel.com\/sa\/story\/intel-arc-graphics-xess\/\">X<sup>e<\/sup> Super Sampling<\/a> and <a href=\"https:\/\/game.intel.com\/sa\/story\/intel-arc-graphics-vrr-hdr-hdmi\/\">HDR &amp; VRR support<\/a>. Another feature we\u2019re excited to talk about is real-time ray tracing for games. Ray tracing is a method for simulating how light behaves with light paths traced from each pixel on screen, bounced off objects, and connected to their light origin. This method, technically called path tracing, allows for super realistic shading, reflections, refractions, and shadows in a way traditional rasterization graphics pipelines simply don\u2019t.<\/p>\n\n\n\n<p>Since it\u2019s important to understand the difference, this distinction is the first topic of this video. Rasterization is the traditional method for rendering 3D scenes in games. Game objects in 3D space are projected onto a 2D plane (your monitor) with the color, texture, reflections, and of course shading all handled by subprograms called shaders. This method isn\u2019t going away anytime soon \u2013 every game still uses raster techniques even if it supports ray tracing.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img src=\"https:\/\/game.intel.com\/wp-content\/uploads\/2022\/09\/raster-ray-trace-hybrid-diagram-1.png\" alt=\"\" class=\"wp-image-20123\"><\/figure>\n\n\n\n<p><a href=\"https:\/\/game.intel.com\/wp-content\/uploads\/2022\/09\/raster-ray-trace-hybrid-diagram-1.png\"><\/a><\/p>\n\n\n\n<p>Rasterization is fast, effective, and established, so it allows developers to implement hybrid rendering and apply ray tracing to a few select areas instead of ray tracing the entire scene, which would be too intense for current computers to run smoothly. Gaming APIs such as DXR and Vulkan RT have been designed with hybrid rendering in mind and help developers improve rasterized renders with ray tracing effects.<\/p>\n\n\n\n<p>Why is rasterization \u201cstupid fast?\u201d Intel and other GPU vendors have developed, and optimized over 2 decades, a set of specialized fixed-function hardware to assist compute engines such as X<sup>e <\/sup>-cores. With Arc GPUs, ray tracing takes advantage of its own specialized hardware too with the new Ray Tracing Units (RTU). Each RTU includes two Ray Traversal Pipelines to quickly trace rays through the geometry structure and can handle 12 box intersections and a triangle intersection per cycle.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img src=\"https:\/\/game.intel.com\/wp-content\/uploads\/2022\/09\/arc-ray-tracing-hardware-1.png\" alt=\"\" class=\"wp-image-20124\"><\/figure>\n\n\n\n<p><a href=\"https:\/\/game.intel.com\/wp-content\/uploads\/2022\/09\/arc-ray-tracing-hardware-1.png\"><\/a><\/p>\n\n\n\n<p>This set of ray tracing hardware gives Arc GPUs not only great peak rates but also great throughput in real world uses of ray tracing. But the X<sup>e<\/sup> architects didn\u2019t stop there: the last piece of this puzzle is our Thread Sorting Unit which helps implement what we call Asynchronous Ray Tracing. This deals with ray divergence and combines rays with similar hit shaders to ensure maximum utilization of the X<sup>e<\/sup>-cores in simple and more complex scenes. All a bit techy? Perhaps colored boxes will help:<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"576\" data-id=\"881\" src=\"https:\/\/dev-intel-gap.pantheonsite.io\/wp-content\/uploads\/2023\/12\/thread-sorting-ray-tracing-1-1024x576.png\" alt=\"\" class=\"wp-image-881\"><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"576\" data-id=\"880\" src=\"https:\/\/dev-intel-gap.pantheonsite.io\/wp-content\/uploads\/2023\/12\/asynchronous-ray-tracing-1-1024x576.png\" alt=\"\" class=\"wp-image-880\"><\/figure>\n<\/figure>\n\n\n\n<p>Let\u2019s come up for air from this deep dive! <em>Ghostwire: Tokyo <\/em>is an excellent example of ray tracing with a load of lights and a surfeit of shiny surfaces. In our side-by-side comparison starting at 17:06 you can see TAP\u2019s game on the left with RT on, and my game with RT off \u2013 but mine does include reflections in the form of \u201cscreen space reflections.\u201d Tom\u2019s reflections are persistent, crisp, and don\u2019t disappear. I didn\u2019t die in this game, but the blurry screen space reflections expired as soon as the object they were reflecting was off-screen, a limitation of rasterization techniques.<\/p>\n\n\n\n<p>Looking for performance numbers? Our video isn\u2019t complete without them! We\u2019ve shown plenty of Intel Arc A750 graphics performance, now we\u2019re looking at the top-end Arc A770 GPU running games at 1080p\u00ad\u00ad\u00ad\u00ad. Again, comparing to the Nvidia RTX 3060, the chart below shows performance in over a dozen ray traced games \u2013 see our configuration info at the bottom of this article. While putting this info together, our engineers delivered a fresh driver which improved performance in <em>Ghostwire Tokyo<\/em> by up to 25%!<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img src=\"https:\/\/game.intel.com\/wp-content\/uploads\/2022\/09\/1080p-gaming-ray-tracing-1920-2.png\" alt=\"1080p Gaming Ray Tracing\" class=\"wp-image-20079\"><\/figure>\n\n\n\n<p><a href=\"https:\/\/game.intel.com\/wp-content\/uploads\/2022\/09\/1080p-gaming-ray-tracing-1920-2.png\"><\/a><\/p>\n\n\n\n<p>Let\u2019s combine tech! With ray tracing on <em>and<\/em> X<sup>e<\/sup>SS enabled, but moving up to 1440p resolution:<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img src=\"https:\/\/game.intel.com\/wp-content\/uploads\/2022\/09\/1440p-gaming-ray-tracing-1.png\" alt=\"\" class=\"wp-image-20127\"><\/figure>\n\n\n\n<p><a href=\"https:\/\/game.intel.com\/wp-content\/uploads\/2022\/09\/1440p-gaming-ray-tracing-1.png\"><\/a><\/p>\n\n\n\n<p>Hats off to the stellar Intel engineers who have made this possible for the benefit of all us gamers who crave performance and visual quality. We hope you\u2019ve enjoyed this dive into our ray tracing technology and its performance; we\u2019ll be back soon with a teardown of an Intel Arc Limited Edition card and more technical info!<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Notices and Disclaimers<\/h4>\n\n\n\n<p>Performance varies by use, configuration and other factors. Learn more at<a href=\"http:\/\/www.intel.com\/PerformanceIndex\">www.Intel.com\/PerformanceIndex<\/a>&nbsp;(graphics and accelerators).<\/p>\n\n\n\n<p>\u200bPerformance results are based on testing as of dates shown in configurations and may not reflect all publicly available \u200bupdates. No product or component can be absolutely secure.\u200b\u200b<\/p>\n\n\n\n<p>Intel does not control or audit third-party data.&nbsp; You should consult other sources to evaluate accuracy.<\/p>\n\n\n\n<p>Intel technologies may require enabled hardware, software or service activation.<\/p>\n\n\n\n<p>All product plans and roadmaps are subject to change without notice.<\/p>\n\n\n\n<p>Statements that refer to future plans or expectations are forward-looking statements. These statements are based on current expectations and involve many risks and uncertainties that could cause actual results to differ materially from those expressed or implied in such statements. For more information on the factors that could cause actual results to differ materially, see our most recent earnings release and SEC filings at <a href=\"https:\/\/www.intc.com\">www.intc.com<\/a>.<\/p>\n\n\n\n<p>\u00a9 Intel Corporation. Intel, the Intel logo, and other Intel marks are trademarks of Intel Corporation or its subsidiaries. Other names and brands may be claimed as the property of others.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img src=\"https:\/\/game.intel.com\/wp-content\/uploads\/2022\/09\/workbench-configs-rt-01-1.png\" alt=\"\" class=\"wp-image-20128\"><\/figure>\n\n\n\n<p><a href=\"https:\/\/game.intel.com\/wp-content\/uploads\/2022\/09\/workbench-configs-rt-01-1.png\"><\/a><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img src=\"https:\/\/game.intel.com\/wp-content\/uploads\/2022\/09\/workbench-configs-rt-02-1.png\" alt=\"\" class=\"wp-image-20129\"><\/figure>\n\n\n\n<p><a href=\"https:\/\/game.intel.com\/wp-content\/uploads\/2022\/09\/workbench-configs-rt-02-1.png\"><\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>The tech which makes 3D movies look stunning has arrived in gaming and Intel Arc GPUs are fit to enhance games visuals with rays. Ready to step into the light with Intel? Intel has been unveiling Intel Arc graphics\u2019 suite of tech features lately, including Xe Super Sampling and HDR &amp; VRR support. Another feature [&hellip;]<\/p>","protected":false},"author":2,"featured_media":1090,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[6],"tags":[],"class_list":["post-873","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-intel-arc"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Real-Time Ray Tracing on Intel\u00ae Arc\u2122 Graphics | Intel Gaming Access<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/game.intel.com\/sa\/stories\/intel-arc-graphics-ray-tracing\/\" \/>\n<meta property=\"og:locale\" content=\"ar_AR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Real-Time Ray Tracing on Intel\u00ae Arc\u2122 Graphics | Intel Gaming Access\" \/>\n<meta property=\"og:description\" content=\"The tech which makes 3D movies look stunning has arrived in gaming and Intel Arc GPUs are fit to enhance games visuals with rays. 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