Shader: land_mesh_height_decal

Overview

This shader is used for rendering decals in clipmaps on prefabs or loft geometries.

Important

For WarThunder-based projects, only the following parameters are supported: alpha_threshold, height_above, and vertex_gamma.

Parameters

• height_above=1 – Controls whether the decal is convex or concave.

  • 1: The heightmap is interpreted as convex and is rendered above the diffuse_threshold.

  • 0: The heightmap is interpreted as concave and is rendered below the diffuse_threshold.

• diffuse_threshold=0.5 – Determines the diffuse value at which the decal is fully rendered. A smooth transition is drawn up to this value, blending with the underlying surface.

• hmap_softness=1 – Configures the contrast of the resulting alpha for height displacement.

• norm_softness=1 – Configures the contrast of the resulting alpha for normal mapping.

• r_softness=1 – Configures the contrast of the resulting alpha for reflectance, microdetails, smoothness, and occlusion.

• vertex_gamma=1 – Configures the gamma for vertex alpha.

• attenuation_from_heightmap_height=0.7 – Modulates the decal mask based on the decal’s height above the heightmap surface.

  • 0: Disabled.

  • 1: Renders what is 1 meter above the landscape.

  • -1: Renders what is 1 meter below the landscape.

• height_scale=0.15 – Sets the height of the displacement.

• height_offset=-0.1 – Offsets the height of the displacement.

• grass_decal_id=255 – Controls the grass index mask:

  • 255: Removes grass.

  • 0: Keeps the grass as it was under the decal.

  • Other values: Specific indices where grass is rendered.

• script:t="vertex_opacity=1" – To use vertex alpha in decals created from prefabs, write the vertex alpha into the second vertex channel. This ensures the vertex alpha is read from the object.

• color_mul_add=255,255,255,0 – Colors the diffuse of the decals. In daEditor, there is a UI with a color picker that allows saving .mat.blk and .dag files (available only in War Thunder).