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zwcloud / MeshTerrainEditor-issues

Mesh Terrain Editor issue tracking and online docs
https://zwcloud.github.io/MeshTerrainEditor-issues/
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Ground looks pixeled on devices with ARM Mali 400 GPU. #69

Closed zwcloud closed 5 years ago

zwcloud commented 5 years ago

Describe the bug
Ground looks pixelated on devices with ARM Mali 400 GPU.

on PC on Galaxy Tab 3 8.0 (T311)
PC Galaxy Tab 3 8 0

To Reproduce

  1. Create a scene with a mesh-terrain using "MTE/Legacy/3 Textures/Diffuse"
  2. Run it on Galaxy Tab 3 8.0 (T311)
  3. See the pixelated mesh-terrain

Expected behavior
the mesh-terrain is rendered as the same as on PC

Screenshots
https://youtu.be/_ZJiTEgpzGw

Environment

zwcloud commented 5 years ago

Useful resources: https://forum.unity.com/threads/force-low-precision-float-on-unity-editor.676750 https://community.arm.com/developer/tools-software/graphics/b/blog/posts/benchmarking-floating-point-precision-in-mobile-gpus https://stackoverflow.com/questions/13005391/loss-of-precision-in-glsl-fragment-shader http://bitiotic.com/blog/2013/09/24/opengl-es-shading-language-potholes-and-problems/ https://forum.unity.com/threads/using-2-textures-and-mask-from-vertices.625861/#post-4193557

zwcloud commented 5 years ago

fixed in commit https://github.com/zwcloud/MeshTerrainEditor/commit/67e379552ac8b3d2aee0bb78ce311ea84166cc41

This solution requires unified tilling on splat-textures.

extra operation need:

  1. Use the MeshTillingBaker and one of the specialized shader: MTE/Specialized/Mali 400/Legacy/3 Textures/Bumped.
  2. Manually adjust the tilling property of Control to 1/original_tilling_of_splat-textures.