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Packages/com.waveharmonic.crest/Runtime/Shaders/Library/Utility/RP/Compute.hlsl

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+// Crest Water System
+// Copyright © 2024 Wave Harmonic. All rights reserved.
+
+#ifndef d_WaveHarmonic_Utility_RenderPipeline_Compute
+#define d_WaveHarmonic_Utility_RenderPipeline_Compute
+
+#include "Packages/com.waveharmonic.crest/Runtime/Shaders/Library/Settings.Crest.hlsl"
+
+// Compute does not have an equivalent of PackageRequirements.
+// We must handle it ourselves.
+
+// Fallback to BIRP if HDRP package missing.
+#if _HRP
+#if (CREST_PACKAGE_HDRP != 1)
+#undef _HRP
+#define _BRP 1
+#endif
+#endif
+
+// Fallback to BIRP if URP package missing.
+#if _URP
+#if (CREST_PACKAGE_URP != 1)
+#undef _URP
+#define _BRP 1
+#endif
+#endif
+
+#if _BRP
+#include "Packages/com.waveharmonic.crest/Runtime/Shaders/Library/Utility/Legacy/Core.hlsl"
+#endif
+
+#if _HRP
+#include "Packages/com.unity.render-pipelines.core/ShaderLibrary/Common.hlsl"
+#include "Packages/com.unity.render-pipelines.high-definition/Runtime/ShaderLibrary/ShaderVariables.hlsl"
+#endif
+
+#if _URP
+#include "Packages/com.unity.render-pipelines.core/ShaderLibrary/Common.hlsl"
+#include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl"
+#endif
+
+
+//
+// Stereo Rendering
+//
+
+// Unity 6 only, but had compilation errors for non HDRP anyway:
+// #include "Packages/com.unity.render-pipelines.core/ShaderLibrary/TextureXR.hlsl"
+
+#ifndef RW_TEXTURE2D_X
+#if defined(UNITY_STEREO_INSTANCING_ENABLED) || defined(UNITY_STEREO_MULTIVIEW_ENABLED)
+    #define COORD_TEXTURE2D_X(pixelCoord)                                   uint3(pixelCoord, SLICE_ARRAY_INDEX)
+    #define RW_TEXTURE2D_X(type, textureName)                               RW_TEXTURE2D_ARRAY(type, textureName)
+#else // UNITY_STEREO
+    #define COORD_TEXTURE2D_X(pixelCoord)                                   pixelCoord
+    #define RW_TEXTURE2D_X                                                  RW_TEXTURE2D
+#endif // UNITY_STEREO
+#endif // RW_TEXTURE2D_X
+
+#ifndef UNITY_XR_ASSIGN_VIEW_INDEX
+// Helper macro to assign view index during compute/ray pass (usually from SV_DispatchThreadID or DispatchRaysIndex())
+#if defined(SHADER_STAGE_COMPUTE) || defined(SHADER_STAGE_RAY_TRACING)
+    #if defined(UNITY_STEREO_INSTANCING_ENABLED)
+        #define UNITY_XR_ASSIGN_VIEW_INDEX(viewIndex) unity_StereoEyeIndex = viewIndex;
+    #else
+        #define UNITY_XR_ASSIGN_VIEW_INDEX(viewIndex)
+    #endif
+#endif
+#endif // UNITY_XR_ASSIGN_VIEW_INDEX
+
+#endif // d_WaveHarmonic_Utility_RenderPipeline_Compute