Changelog

1.4

A little reordering and the HorizontalClippingSection.cs script and demo scene added. New Unity 4.6 GUI added

1.5

More shaders added, including new Unity Standard PBR shader. You can see all the shaders included in “various_materials” scene. Gizmo for clipping plane rotation added. 1.6. PBR shaders update for Unity 5.3.

1.7

Most of assets got changed. Shaders changed to multicompiled requiring global and material keywords and variables to manipulate. New clipping features: - added the second clipping plane, tilted at an angle to the first one, which can produce a pie section - added sphere section

1.8

Update for Unity 5.5. Added Standard Surface Shader.

1.9

Update for Unity 5.6. More examples added: cube section, tube section. Capped setups, together with examples: box section and corner section - added. Caps can hide clipped backfaces. Retrack backfaces - new shader feature added. ==2.0== Outline effect and support for intersecting geometry added. Bounding box calculations were moved from Start function in playmode to OnValidate function in editor. Update for Unity 2017.3.0

2.1

Update for Unity 2017.4.1 2.1.1 Changes in capped setup section box and corner box clipping plane stencil shaders. Mapping of these shaders got moved from object uv to world space. New example scenes: - Box section textured - Capped section textured with clipping plane materials corresponding to gameObject materials (e.g. not hatched as in previous examples, but sharing with model gameObject the same diffuse textures).

2.2

Update for Unity 2019.2.16 Added support for LWRP and LWRP shader graph.

2.3

Update for Unity 2019.3.0 LWRP replaced by URP The outline feature was added to URP.

2.4

BoundBox calculation improvements. Using multithreading and the MathGeoLib library (in Editor). Added GUI/Text (Font) Shader. Added support for TextMeshPro shaders.

2.5

Selective post process edge effect added in both standard and lightweight render pipelines. Separate color and visibility settings for object and section surfaces.

2.6

Renaming standard pipeline shader filenames for better clarity. General improvements and fixes. Update for Unity 2020.1.0

2.7

Adding the High Definition Render Pipeline (HDRP) support.

2.8

Update for Unity 2020.2.2, URP 10.2.2 and HDRP 10.2.2

2.8.1

cross section edge effect fix for URP

2.8.2

Fixing the URP/LitAndCapPrepare shader - (not showing up on Android and Standalone builds). Renaming shader macro and complile constants - change from "PLANE_CLIP..." to "SECTION_CLIP..."

2.9

Update for Unity 2021.2.0, URP 12.0 and HDRP 12.0

HDRP:

Depreciating the usage of CrossSectionHDRP/StencilShowShader (based on HDRP/Unlit shader) in multiple materials with different stencil settings applied to CrossSection caps in capped setups. Since now using DrawRenderersCustomPass with material based on CrossSectionHDRP/Renderers/StencilShowPass shader. Adding edge effect to hdrp.

2.10

Single and multiple primitive cutouts were added.

Keyword CLIP_TWO_PLANES got renamed to CLIP_PIE.

Matrix4x4 _WorldToBoxMatrix got renamed to _WorldToObjectMatrix.

Matrix4x4 array _WorldToBoxMatrixes got renamed to _WorldToObjectMatrixes.

BoxSectionExample got renamed to CuboidSectionExample.

The following shaders got renamed:

from "Clipping/Box/SurfaceShader" to "CrossSection/Surface/Box"
from "Clipping/Box/Standard" to "CrossSection/Standard/Box"
from "Clipping/Box/Standard Specular setup" to "CrossSection/Standard (Specular setup)/Box"
from "Clipping/Box/Autodesk Interactive" to "CrossSection/Autodesk Interactive/Box"

Stencil pass added to standard built-in shaders for greater versatility:

CrossSection/Surface/ (a remake of SurfaceShader)
CrossSection/Standard/ (a remake of Standard shader)
CrossSection/Standard (Specular setup)/ (a remake of Standard Specular setup shader)
CrossSection/Autodesk Interactive/ (a remake of Autodesk Interactive shader)

so the above shaders now substitute the shaders listed below:

Clipping/Corner/ SurfaceShader
Clipping/Corner/Standard
Clipping/Corner/Standard Specular setup
Clipping/Corner/Autodesk Interactive

which got removed.

UPGRADE NOTICE

Before upgrade clear the Assets\WorldSpaceTransitions\crossSection (Built In)\shaders folder.

Or remove these deprecated shader files:

• BoxGlassStainedBumpDistort
• BoxHatchPrepare
• CornerGlassStainedBumpDistort
• BoxBumpedSpecular
• CapPrepareUnlit
• GlassStainedBumpDistortWS
• BoxSurfaceStd
• CornerSurfaceStd
• GlassStainedBumpDistort
• BoxStandardSpecular
• BoxAutodesk
• BoxStandard

2.10.1

Shader graphs update. Subgraphs for cross-section keywords got replaced by custom function nodes.

2.11

A support for UnityEngine.InputSystem was added to scripts and demos.

HDRP:

New CrossSection prebuilt HDRP shader "CrossSectionHDRP/Lit" based on Unity prebuilt "HDRP/Lit" shader (experimental stage).

2.12

General update for Unity 2022.1.0 and URP 13.1.8, HDRP 13.1.8
HDRP:
Adding missing features to "HDRP/Lit" shader.

2.13

Bounding Box calculation methods have got changed (SectionSetup script):

the MathGeoLib dll library has got replaced by the dedicated OrientedBounds class.
The boundbox calculations got based on Unity Job System multithreading.

2.14

SectionSetup script: fixes to memory leak and other errors thrown from Unity Job System - (Job System multithreading used here for boundbox calculations on separate thread).
other minor fixes

2.15

SectionSetup script: fixes to crossSection material management. other minor fixes

2.16

General update for Unity 2022.2.0 and URP 14.0.4, HDRP 14.0.4 Adding Install Wizard

2.17

General update for Unity 2023.1.0 and URP 15.0.5, HDRP 15.0.5

_useSectionColor property has been added to the following shaders:

• Standard
• Standard (Specular Setup)
• Cross Section URP/Lit
• Cross Section HDRP/Lit
• Cross Section Graphs/Physical Material 3 Ds Max

This lets to use on the section either _SectionColor or the same color as on the front faces

2.18

- Installation Wizard Changes - Improvements to HDRP shaders; CrossSectionHDRP/LitTesselation shader added

2.19

- Changes to planar_xyz example script and scene.

- Improvements to HDRP shaders; CrossSectionHDRP/Unlit shader added

- URP shaders updates

2.20

- Fixes to Cross Section HDRP Unlit, Lit and LitTesselation shader errors in transparent mode.