Merge PR #62772 from graphics/urp/xr/uum-75383

Author: JangkyuSeo

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

@@ -236,9 +236,33 @@ internal void PushBuiltinShaderConstantsXR(CommandBuffer cmd, bool renderIntoTex
                 }
                 else
                 {
+
+					Matrix4x4 viewMatrix = GetViewMatrix();
                     // Update multipass worldSpace camera pos
                     Vector3 worldSpaceCameraPos = Matrix4x4.Inverse(GetViewMatrix(0)).GetColumn(3);
                     cmd.SetGlobalVector(ShaderPropertyId.worldSpaceCameraPos, worldSpaceCameraPos);
+
+                    //Multipass uses the same value as a normal render, and doesn't use the value set for stereo,
+                    //which is why you need to set a value like unity_MatrixInvV.
+                    //The values below should be the same as set in the SetCameraMatrices function in ScriptableRenderer.cs.
+                    Matrix4x4 gpuProjectionMatrix = GetGPUProjectionMatrix(renderIntoTexture);
+                    Matrix4x4 viewAndProjectionMatrix = gpuProjectionMatrix * viewMatrix;
+                    Matrix4x4 inverseViewMatrix = Matrix4x4.Inverse(viewMatrix);
+                    Matrix4x4 inverseProjectionMatrix = Matrix4x4.Inverse(gpuProjectionMatrix);
+                    Matrix4x4 inverseViewProjection = inverseViewMatrix * inverseProjectionMatrix;
+
+                    // There's an inconsistency in handedness between unity_matrixV and unity_WorldToCamera
+                    // Unity changes the handedness of unity_WorldToCamera (see Camera::CalculateMatrixShaderProps)
+                    // we will also change it here to avoid breaking existing shaders. (case 1257518)
+                    Matrix4x4 worldToCameraMatrix = Matrix4x4.Scale(new Vector3(1.0f, 1.0f, -1.0f)) * viewMatrix;
+                    Matrix4x4 cameraToWorldMatrix = worldToCameraMatrix.inverse;
+                    cmd.SetGlobalMatrix(ShaderPropertyId.worldToCameraMatrix, worldToCameraMatrix);
+                    cmd.SetGlobalMatrix(ShaderPropertyId.cameraToWorldMatrix, cameraToWorldMatrix);
+
+                    cmd.SetGlobalMatrix(ShaderPropertyId.inverseViewMatrix, inverseViewMatrix);
+                    cmd.SetGlobalMatrix(ShaderPropertyId.inverseProjectionMatrix, inverseProjectionMatrix);
+                    cmd.SetGlobalMatrix(ShaderPropertyId.inverseViewAndProjectionMatrix, inverseViewProjection);
+
                 }
             }
 #endif