{"id":4171,"date":"2019-10-16T12:02:56","date_gmt":"2019-10-16T19:02:56","guid":{"rendered":"http:\/\/mattfife.com\/?page_id=4171"},"modified":"2024-11-11T10:45:36","modified_gmt":"2024-11-11T17:45:36","slug":"adaptive-volumetric-shadow-maps","status":"publish","type":"page","link":"https:\/\/mattfife.com\/?page_id=4171","title":{"rendered":"Adaptive Volumetric Shadow Maps"},"content":{"rendered":"\n

By Matthew Fife<\/a>, Filip Strugar<\/a>, published on March 27, 2013<\/strong> <\/p>\n\n\n

\n
\"\"<\/figure>\n<\/div>\n\n\n

Adaptive Volumetric Shadow Maps use a new technique that allows a developer to generate real-time adaptively sampled shadow representations for transmittance through volumetric media.  This new data structure and technique allows for generation of dynamic, self-shadowed volumetric media in real-time rendering engines using today\u2019s Microsoft DirectX* 11 hardware.<\/p>\n\n\n\n

Each texel of this new kind of shadow map stores a compact approximation to the transmittance curve along the corresponding light ray.  The main innovation of the AVSM technique is a new streaming compression algorithm that is capable of building a constant-storage, variable-error representation of a visibility curve that represents the light ray\u2019s travel through the media that can be used in later shadow lookups.<\/p>\n\n\n\n

Another exciting part of this sample is the use of a new pixel shader ordering feature found in new Intel\u00ae Iris™ and Intel\u00ae Iris™ Pro graphics hardware. Two implementations are provided in this sample – a standard DirectX implementation, and an implementation that utilizes this new graphics hardware feature.<\/p>\n\n\n\n

This sample was authored by Matt Fife (Intel), Filip Strugar (Intel) with contributions from Leigh Davies (Intel), based on an original article and samplet from Marco Salvi (Intel).<\/p>\n\n\n\n

Original article link is here, but appears broken: https:\/\/software.intel.com\/en-us\/blogs\/2013\/03\/27\/adaptive-volumetric-shadow-maps<\/a><\/p>\n\n\n\n

Internet Wayback Machine link in case that breaks:
<\/a>https:\/\/web.archive.org\/web\/20131227104350\/https:\/\/software.intel.com\/en-us\/blogs\/2013\/03\/27\/adaptive-volumetric-shadow-maps<\/a> <\/a><\/p>\n\n\n\n

Adaptive Volumetric Shadow Maps<\/a>, EGSR 2010 paper by Marco Salvi.<\/p>\n\n\n\n

\"\"\/<\/figure>\n\n\n\n
\"\"\/<\/figure>\n\n\n\n
\"\"\/<\/figure>\n\n\n\n
Code:<\/strong> avsm.zip<\/a>Download<\/a><\/div>\n\n\n\n
White Paper:<\/strong> intel-avsm-white-paper.pdf<\/a>Download<\/a><\/div>\n","protected":false},"excerpt":{"rendered":"

By Matthew Fife, Filip Strugar, published on March 27, 2013  Adaptive Volumetric Shadow Maps use a new technique that allows a developer to generate real-time adaptively sampled shadow representations for transmittance through volumetric media.  This new data structure and technique allows for generation of dynamic, self-shadowed volumetric media in real-time rendering engines using today\u2019s Microsoft DirectX* 11 hardware. Each texel of this new kind of shadow map stores a compact approximation to the transmittance curve along the corresponding light ray.  The main…<\/p>\n

Read More Read More<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"jetpack_post_was_ever_published":false,"footnotes":""},"class_list":["post-4171","page","type-page","status-publish","hentry"],"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/P4WECr-15h","jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/mattfife.com\/index.php?rest_route=\/wp\/v2\/pages\/4171","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mattfife.com\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/mattfife.com\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/mattfife.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/mattfife.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4171"}],"version-history":[{"count":3,"href":"https:\/\/mattfife.com\/index.php?rest_route=\/wp\/v2\/pages\/4171\/revisions"}],"predecessor-version":[{"id":12632,"href":"https:\/\/mattfife.com\/index.php?rest_route=\/wp\/v2\/pages\/4171\/revisions\/12632"}],"wp:attachment":[{"href":"https:\/\/mattfife.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4171"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}