[SOLVED] Emission UV2 and alpha blending

[adrian.licuriceanu]

Hi,

Any idea why the following material, using alpha blending and the secondary UV for emission is not compiling?

<?xml version="1.0" encoding="utf-8"?>
<material name="my_mat" version="2.9.0.0" guid="5008a5bad5ee0b18c9b95b842e12b57e37f44074" base_material="mesh_base">

  <options transparent="2" order="21" depth_mask="0" cast_shadow="0" cast_world_shadow="0" receive_shadow="1" receive_world_shadow="1"/>
  <blend src="src_alpha" dest="one_minus_src_alpha"/>
  <texture name="albedo" wrap="repeat">guid://62fec93c6e69136b9af491ceca106ed5de3a7230</texture>

  <state name="emission">1</state>
  <state name="emission_bake_gi">0</state>
  <parameter name="emission_color">1 1 1 1</parameter>
  <texture name="emission" wrap="repeat">guid://62fec93c6e69136b9af491ceca106ed5de3a7230</texture>
  <state name="emission_mapping">2</state>

</material>

The error is:

Failed to compile fragment shader: core/shaders/mesh/transparent/ambient.shader
Compilation log:
    (3286,12-28): error X3003: redefinition of 'emission_texcoord'

Seems related to ambient pass and emission_mapping being 2?

This is in 2.9 version. Previously in 2.5, secondary UV was not available for emission texture so I have to add it manually in the mesh_base shaders code and it worked.

Kind Regards,

Adrian L.

VSTEP

[silent]

Hi Adrian,

In 2.9 you can select UV channel for Emission pass in default mesh_base material, so you don't need custom material for that. Will it fit your needs?

[adrian.licuriceanu]

Hi and sorry, false alarm. Some of our old modification code was kept in ambient shader after the source merge. The base mesh material indeed correctly works with emission_mapping as 2.

Regards,

Adrian L.