Directional lightmap in custom shader.

Question

I have this error:

"Fragment program 'frag': Unrecognized sampler 'samplerunity_lightmap' - does not match any texture and is not a recognized inline name (should contain filter and wrap modes)"

when I write

"UNITY_SAMPLE_TEX2D_SAMPLER (unity_LightmapInd, unity_Lightmap, i.uv1)."

I'm just trying to get directional lightmap in custom shader, but i have this strange error. if i write "unity_Lightmap" instead of "unity_LightmapInd" i don't have error.

Answer 1

Answer by shivaduke28 · Nov 09, 2021 at 01:11 PM

This occurs when you use unity_LightmapInd without unity_Lightmap. unity_LightmapInd is supposed to use the sampler of unity_Lightmap, named samplerunity_Lightmap. If you do not use unity_Lightmap in your shader, then the optimizer will strip it and its sampler from shader.

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Directional lightmap in custom shader.

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