Error building Player: Shader error in 'Universal Render Pipeline/Lit': maximum ps_4_0 sampler register index (16) exceeded

[Rilissimo1]

Hello, i’m using Unity 2022.3.30f1 (DX11) with URP, btw the compiler failed to build the game cause a URP/Lit shader error above

Error building Player: Shader error in 'Universal Render Pipeline/Lit': maximum ps_4_0 sampler register index (16) exceeded at Project/Packages/com.unity.render-pipelines.universal@14.0.11/ShaderLibrary/Shadows.hlsl(54) (on d3d11)

Compiling Subshader: 0, Pass: ForwardLit, Fragment program with LIGHTMAP_ON LOD_FADE_CROSSFADE _ADDITIONAL_LIGHTS _ADDITIONAL_LIGHT_SHADOWS _DETAIL_MULX2 _EMISSION _MAIN_LIGHT_SHADOWS_SCREEN _METALLICSPECGLOSSMAP _NORMALMAP _OCCLUSIONMAP _PARALLAXMAP _REFLECTION_PROBE_BLENDING _REFLECTION_PROBE_BOX_PROJECTION _SCREEN_SPACE_OCCLUSION
Platform defines: SHADER_API_DESKTOP UNITY_COLORSPACE_GAMMA UNITY_ENABLE_DETAIL_NORMALMAP UNITY_ENABLE_REFLECTION_BUFFERS UNITY_LIGHTMAP_FULL_HDR UNITY_LIGHT_PROBE_PROXY_VOLUME UNITY_PBS_USE_BRDF1 UNITY_SPECCUBE_BLENDING UNITY_SPECCUBE_BOX_PROJECTION UNITY_USE_DITHER_MASK_FOR_ALPHABLENDED_SHADOWS
Disabled keywords: DEBUG_DISPLAY DIRLIGHTMAP_COMBINED DOTS_INSTANCING_ON DYNAMICLIGHTMAP_ON EVALUATE_SH_MIXED EVALUATE_SH_VERTEX FOG_EXP FOG_EXP2 FOG_LINEAR INSTANCING_ON LIGHTMAP_SHADOW_MIXING SHADER_API_GLES30 SHADOWS_SHADOWMASK UNITY_ASTC_NORMALMAP_ENCODING UNITY_FRAMEBUFFER_FETCH_AVAILABLE UNITY_HALF_PRECISION_FRAGMENT_SHADER_REGISTERS UNITY_HARDWARE_TIER1 UNITY_HARDWARE_TIER2 UNITY_HARDWARE_TIER3 UNITY_LIGHTMAP_DLDR_ENCODING UNITY_LIGHTMAP_RGBM_ENCODING UNITY_METAL_SHADOWS_USE_POINT_FILTERING UNITY_NO_DXT5nm UNITY_NO_FULL_STANDARD_SHADER UNITY_NO_SCREENSPACE_SHADOWS UNITY_PBS_USE_BRDF2 UNITY_PBS_USE_BRDF3 UNITY_PRETRANSFORM_TO_DISPLAY_ORIENTATION UNITY_UNIFIED_SHADER_PRECISION_MODEL UNITY_VIRTUAL_TEXTURING _ADDITIONAL_LIGHTS_VERTEX _ALPHAMODULATE_ON _ALPHAPREMULTIPLY_ON _ALPHATEST_ON _DBUFFER_MRT1 _DBUFFER_MRT2 _DBUFFER_MRT3 _DETAIL_SCALED _ENVIRONMENTREFLECTIONS_OFF _FORWARD_PLUS _MAIN_LIGHT_SHADOWS _MAIN_LIGHT_SHADOWS_CASCADE _RECEIVE_SHADOWS_OFF _SHADOWS_SOFT _SHADOWS_SOFT_HIGH _SHADOWS_SOFT_LOW _SHADOWS_SOFT_MEDIUM _SMOOTHNESS_TEXTURE_ALBEDO_CHANNEL_A _SPECULARHIGHLIGHTS_OFF _SPECULAR_SETUP _SURFACE_TYPE_TRANSPARENT _WRITE_RENDERING_LAYERSError building Player: Shader error in 'Universal Render Pipeline/Lit': maximum ps_4_0 sampler register index (16) exceeded at Project/Packages/com.unity.render-pipelines.universal@14.0.11/ShaderLibrary/Shadows.hlsl(54) (on d3d11)

Compiling Subshader: 0, Pass: ForwardLit, Fragment program with LIGHTMAP_ON LOD_FADE_CROSSFADE _ADDITIONAL_LIGHTS _ADDITIONAL_LIGHT_SHADOWS _DETAIL_MULX2 _EMISSION _MAIN_LIGHT_SHADOWS_SCREEN _METALLICSPECGLOSSMAP _NORMALMAP _OCCLUSIONMAP _PARALLAXMAP _REFLECTION_PROBE_BLENDING _REFLECTION_PROBE_BOX_PROJECTION _SCREEN_SPACE_OCCLUSION
Platform defines: SHADER_API_DESKTOP UNITY_COLORSPACE_GAMMA UNITY_ENABLE_DETAIL_NORMALMAP UNITY_ENABLE_REFLECTION_BUFFERS UNITY_LIGHTMAP_FULL_HDR UNITY_LIGHT_PROBE_PROXY_VOLUME UNITY_PBS_USE_BRDF1 UNITY_SPECCUBE_BLENDING UNITY_SPECCUBE_BOX_PROJECTION UNITY_USE_DITHER_MASK_FOR_ALPHABLENDED_SHADOWS
Disabled keywords: DEBUG_DISPLAY DIRLIGHTMAP_COMBINED DOTS_INSTANCING_ON DYNAMICLIGHTMAP_ON EVALUATE_SH_MIXED EVALUATE_SH_VERTEX FOG_EXP FOG_EXP2 FOG_LINEAR INSTANCING_ON LIGHTMAP_SHADOW_MIXING SHADER_API_GLES30 SHADOWS_SHADOWMASK UNITY_ASTC_NORMALMAP_ENCODING UNITY_FRAMEBUFFER_FETCH_AVAILABLE UNITY_HALF_PRECISION_FRAGMENT_SHADER_REGISTERS UNITY_HARDWARE_TIER1 UNITY_HARDWARE_TIER2 UNITY_HARDWARE_TIER3 UNITY_LIGHTMAP_DLDR_ENCODING UNITY_LIGHTMAP_RGBM_ENCODING UNITY_METAL_SHADOWS_USE_POINT_FILTERING UNITY_NO_DXT5nm UNITY_NO_FULL_STANDARD_SHADER UNITY_NO_SCREENSPACE_SHADOWS UNITY_PBS_USE_BRDF2 UNITY_PBS_USE_BRDF3 UNITY_PRETRANSFORM_TO_DISPLAY_ORIENTATION UNITY_UNIFIED_SHADER_PRECISION_MODEL UNITY_VIRTUAL_TEXTURING _ADDITIONAL_LIGHTS_VERTEX _ALPHAMODULATE_ON _ALPHAPREMULTIPLY_ON _ALPHATEST_ON _DBUFFER_MRT1 _DBUFFER_MRT2 _DBUFFER_MRT3 _DETAIL_SCALED _ENVIRONMENTREFLECTIONS_OFF _FORWARD_PLUS _MAIN_LIGHT_SHADOWS _MAIN_LIGHT_SHADOWS_CASCADE _RECEIVE_SHADOWS_OFF _SHADOWS_SOFT _SHADOWS_SOFT_HIGH _SHADOWS_SOFT_LOW _SHADOWS_SOFT_MEDIUM _SMOOTHNESS_TEXTURE_ALBEDO_CHANNEL_A _SPECULARHIGHLIGHTS_OFF _SPECULAR_SETUP _SURFACE_TYPE_TRANSPARENT _WRITE_RENDERING_LAYERS

I have already tried the solution from this post but the problem still persist

shader error in 'universal render pipeline/lit': maximum ps_4_0 sampler register index (16) exceeded

Hi, will the unity team ever fix this issue that stops me from building? This error shouldnt happen in the Lit shader ever. I’ve noticed that it may happen in shadergraphs that use many textures after a lot of google searches. But the Lit shader doesnt use that many textures. I’ve had a bug report on this for more than 6 months. When will it get fixed? I somehow managed to build until now by reimporting the URP assets every time i tried to build but that doesnt work anymore. I just tested in 202…

[funnymanwin]

Yeah, i have the same problem:

I cannot build the game because of it.
I created the new scene with many baked light sources, reflection probes and adaptive probe volume:

And if I include this scene the game cannot be built. Interesting taht the exception always exists in the editor, but the game can not be built only when I include the new scene in Scene List.
Where is this problem specifically - I don’t understand. But I hope Unity will fix it.

In addition want to say that I used Unity 6000.0.30f1 too when this problem appeared. I updated to newest Unity 6000.0.32 hoping that it will be fixed, but of course - it didn’t help :
Thx Unity devs: new small update = new bugs, and they called it “LTS”, “release” version

If you don’t pay 40$ per month the only way to get unity technical support - … oh, there is no way, yeah?

[GediminasR]

Hello,

This could be a project specific issue and how it was setup, so I would like to ask you and report the issue via the Unity Bug Reporter so that it could be looked at.

You can do so by going into your project and pressing Help → Report a Bug…