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Clockwise-face culling in gltf does not work correctly #571

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KaYaF opened this issue Jul 21, 2020 · 0 comments
Open

Clockwise-face culling in gltf does not work correctly #571

KaYaF opened this issue Jul 21, 2020 · 0 comments
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@emadurandal
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enhancement New feature or request Priority_Middle better to do spec change Destructive spec changing
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@KaYaF
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KaYaF commented Jul 21, 2020 •
edited by sync-by-unito bot
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ModelConverter.ts does not support the following:

  1. gl.frontFace(gl.CW)
  2. Nodes that share the same material have the different winding order of mesh triangle faces.

For 1, from the following description in the specification of the GlTF, when the determinant of transform is negative, the node(material) should be performed the clockwise-face culling.
image

For 2, in rhodonite, the winding order of mesh triangle faces is specified in a material object. When some primitive share a material, These primitive must have the same winding order.

┆Issue is synchronized with this Wrike Item
@emadurandal emadurandal added the spec change Destructive spec changing label Sep 1, 2020
@emadurandal emadurandal changed the title Clockwise-face culling is not work in gltf Clockwise-face culling in gltf is not work Feb 19, 2021
@emadurandal emadurandal added the enhancement New feature or request label Feb 19, 2021
@emadurandal emadurandal added this to the April 2021 milestone Feb 19, 2021
@emadurandal emadurandal self-assigned this Feb 19, 2021
@emadurandal emadurandal modified the milestones: June 2021, July 2021 Jun 8, 2021
@emadurandal emadurandal changed the title Clockwise-face culling in gltf is not work Clockwise-face culling in gltf does not work Jun 27, 2021
@emadurandal emadurandal changed the title Clockwise-face culling in gltf does not work Clockwise-face culling in gltf does not work correctly Jun 27, 2021
@emadurandal emadurandal modified the milestones: v0.4.2, More Later Sep 22, 2021
@emadurandal emadurandal added the Priority_Middle better to do label Sep 22, 2021
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