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Extend EnvironmentMapEffect with additional mappings #222

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walbourn opened this issue Jul 7, 2020 · 2 comments
Closed

Extend EnvironmentMapEffect with additional mappings #222

walbourn opened this issue Jul 7, 2020 · 2 comments
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walbourn commented Jul 7, 2020 •
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The current implementation only supports cubic environment mapping which is native to the hardware.

For completeness, it should also support:

  • Spherical mapping (ala Direct3D 9 era)
  • Parabolic mapping (use texture index 0 & 1 so it requires Direct3D hardware level 10.0 or greater)
  • Octahedronal mapping (as a stretch goal)

Blinn & Newell, "Texture and Reflection in Computer Generated Images", Communications of the ACM. 1976.
link

Heidrich & Seidel, “View-independent Environment Maps”, Eurographics Workshop on Graphics Hardware, 1998. link

Engelhardt & Dachsbacher, "Octahedron Environment Maps", Visualization Research Center, University of Stuttgart. link
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walbourn commented Jul 7, 2020

This is related to DirectXTex tool tasks

microsoft/DirectXTex#39

microsoft/DirectXTex#14

microsoft/DirectXTex#13

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walbourn commented Jul 8, 2020

See this PR for DirectX 11

And this PR for DirectX 12.

@walbourn walbourn self-assigned this Jul 14, 2020
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