Shader: rendinst_flag_layered

Overview

This shader is designed for fabric animation with detail blending based on vertex color.

Parameters

• script:t="frequency_amplitude=1,1,1,1" – Sets the random frequency and amplitude intervals.

• script:t="wave_length=1" – Defines the wavelength.

• script:t="wind_direction=0,0,1,0" – Specifies the wind direction.

• script:t="details_tile=1,1,1,0" – Controls the tiling of the details.

• script:t="invert_heights=0,0.5,0,0" – Inverts the heightmaps of the details (can be fractional).

• script:t="paint_details=1,0,0,1" – Specifies the coloring of the details.

• script:t="overlay_color_from=0,0,0,0" – Defines the “from” and “to” colors for blending via linear interpolation (lerp) using the blue channel of the vertex color as the mask.

• script:t="overlay_color_to=0,0,0,0" – Specifies the color range from 0 (RGB value 0) to 1 (RGB value 255).

• script:t="micro_detail_layer=0" – Parameters for micro details.

• script:t="micro_detail_layer_v_scale=1"

• script:t="micro_detail_layer_uv_scale=1"

• script:t="atest=1" and script:t="details_alphatest=0,0,0,0" – Work together. The first parameter enables alpha test, while the second defines the alpha test strength for each detail.

Functionality

This shader operates on the same principles as its parent shaders:

• Shader rendinst_flag_colored – Controls the animation behavior.

• Shader rendinst_vcolor_layered – Manages detail painting, overlay, alpha test, tiling, and heightmap inversion.

All these parameters are fully described in the relevant shader documentation, so they will not be repeated here – refer to the corresponding sections for details.

The only key difference lies in the channels used for detail blending. Since this shader handles not just three details but also includes animation, the blending is controlled by different channels than in rendinst_vcolor_layered.

• Red channel – Controls animation.

• Green channel – Subtracts the second detail from the first.

• Blue channel – Subtracts the third detail from the first two.

Important

The blue channel also controls the overlay (see rendinst_vcolor_layered). Therefore, you must decide which aspect is more important for a specific asset – overlay or an additional detail.

If the overlay is needed, assign the same detail to the blue channel as you use for the first (or second) detail, depending on which detail takes priority.