Fix shader errors when post processing shaders are stripped

Author: arttu-peltonen

Packages/com.unity.render-pipelines.universal/Runtime/Passes/PostProcess/BloomPostProcessPass.cs

@@ -34,13 +34,13 @@ public BloomPostProcessPass(Shader shader)
             this.renderPassEvent = RenderPassEvent.AfterRenderingPostProcessing - 1;
             this.profilingSampler = URPProfilingSamplers.Bloom;
 
-            m_Material = PostProcessUtils.LoadShader(shader, passName);
+            m_Material = PostProcessUtils.LoadShader(shader, passName, logLevel: LogType.Log);
 
             // Array for bloom pyramid materials.
             // Materials are references in the command buffer, so we need a separate material for each mip level.
             m_MaterialPyramid = new Material[k_MaxPyramidSize];
             for (uint i = 0; i < k_MaxPyramidSize; ++i)
-                m_MaterialPyramid[i] = PostProcessUtils.LoadShader(shader, passName);
+                m_MaterialPyramid[i] = PostProcessUtils.LoadShader(shader, passName, logLevel: LogType.Log);
 
             // Check if the pass init was successful.
             m_IsValid = m_Material != null;

Packages/com.unity.render-pipelines.universal/Runtime/Passes/PostProcess/DepthOfFieldBokehProcessPass.cs

@@ -23,8 +23,7 @@ public DepthOfFieldBokehPostProcessPass(Shader shader)
         {
             this.renderPassEvent = RenderPassEvent.AfterRenderingPostProcessing - 1;
             this.profilingSampler = URPProfilingSamplers.BokehDepthOfField;
-
-            m_Material = PostProcessUtils.LoadShader(shader, passName);
+            m_Material = PostProcessUtils.LoadShader(shader, passName, logLevel: LogType.Log);
             m_IsValid = m_Material != null;
         }
 

Packages/com.unity.render-pipelines.universal/Runtime/Passes/PostProcess/DepthOfFieldGaussianPostProcessPass.cs

@@ -21,8 +21,8 @@ public DepthOfFieldGaussianPostProcessPass(Shader shader)
             this.renderPassEvent = RenderPassEvent.AfterRenderingPostProcessing - 1;
             this.profilingSampler = URPProfilingSamplers.GaussianDepthOfField;
 
-            m_Material = PostProcessUtils.LoadShader(shader, passName);
-            m_MaterialCoc = PostProcessUtils.LoadShader(shader, passName);
+            m_Material = PostProcessUtils.LoadShader(shader, passName, logLevel: LogType.Log);
+            m_MaterialCoc = PostProcessUtils.LoadShader(shader, passName, logLevel: LogType.Log);
             m_IsValid = m_Material != null && m_MaterialCoc != null;
 
             // Depth of Field

Packages/com.unity.render-pipelines.universal/Runtime/Passes/PostProcess/MotionBlurPostProcessPass.cs

@@ -16,7 +16,7 @@ public MotionBlurPostProcessPass(Shader shader)
             this.renderPassEvent = RenderPassEvent.AfterRenderingPostProcessing - 1;
             this.profilingSampler = URPProfilingSamplers.MotionBlur;
 
-            m_Material = PostProcessUtils.LoadShader(shader, passName);
+            m_Material = PostProcessUtils.LoadShader(shader, passName, logLevel: LogType.Log);
             m_IsValid = m_Material != null;
         }
 

Packages/com.unity.render-pipelines.universal/Runtime/Passes/PostProcess/PaniniProjectionPostProcessPass.cs

@@ -16,7 +16,7 @@ public PaniniProjectionPostProcessPass(Shader shader)
             this.renderPassEvent = RenderPassEvent.AfterRenderingPostProcessing - 1;
             this.profilingSampler = URPProfilingSamplers.PaniniProjection;
 
-            m_Material = PostProcessUtils.LoadShader(shader, passName);
+            m_Material = PostProcessUtils.LoadShader(shader, passName, logLevel: LogType.Log);
             m_IsValid = m_Material != null;
         }
 

Packages/com.unity.render-pipelines.universal/Runtime/PostProcessUtils.cs

@@ -14,8 +14,9 @@ public static class PostProcessUtils
         /// </summary>
         /// <param name="shader">Shader used for the material</param>
         /// <param name="passName">Pass name for error messages.</param>
-        /// <returns>A new Material instance using the provided shader. Null if the shader is not supported.</returns>
-        internal static Material LoadShader(Shader shader, string passName = "")
+        /// <param name="logLevel">LogType for the message if the shader is not supported.</param>
+        /// <returns>A new Material instance using the provided shader. Null if the shader is not supported or it's missing.</returns>
+        internal static Material LoadShader(Shader shader, string passName = "", LogType logLevel = LogType.Warning)
         {
             if (shader == null)
             {
@@ -24,7 +25,7 @@ internal static Material LoadShader(Shader shader, string passName = "")
             }
             else if (!shader.isSupported)
             {
-                Debug.LogWarning($"Shader '{shader.name}' is not supported (in '{passName}'). PostProcessing render passes will not execute.");
+                Debug.unityLogger.Log(logLevel, $"Shader '{shader.name}' is not supported or has been stripped from the build (in '{passName}'). PostProcessing render passes will not execute.");
                 return null;
             }
 
@@ -34,6 +35,7 @@ internal static Material LoadShader(Shader shader, string passName = "")
         /// <summary>
         /// Creates a texture compatible with post-processing effects.
         /// </summary>
+
         /// <param name="renderGraph">RenderGraph that creates the texture.</param>
         /// <param name="source">Source texture for the texture descriptor.</param>
         /// <param name="name">Texture name.</param>