90 lines
3.3 KiB
C#
90 lines
3.3 KiB
C#
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using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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using UnityEngine.Rendering;
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using UnityEngine.Rendering.Universal;
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//TODO: Manage the material from script instead of inspector
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[ExecuteAlways]
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public class OasisFog : MonoBehaviour
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{
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private OasisFogPass _pass;
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public RenderPassEvent injectionPoint = RenderPassEvent.BeforeRenderingTransparents;
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public int injectionPointOffset = 0;
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public Material material;
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public ScriptableRenderPassInput inputRequirements;
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private void OnEnable()
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{
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_pass = new OasisFogPass();
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// setup callback
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RenderPipelineManager.beginCameraRendering += OnBeginCamera;
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}
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private void OnDisable()
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{
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RenderPipelineManager.beginCameraRendering -= OnBeginCamera;
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}
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private void OnBeginCamera(ScriptableRenderContext context, Camera cam)
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{
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// injection point
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_pass.renderPassEvent = injectionPoint + injectionPointOffset;
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_pass.passMaterial = material;
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_pass.inputReq = inputRequirements;
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cam.GetUniversalAdditionalCameraData().scriptableRenderer.EnqueuePass(_pass);
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}
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private class OasisFogPass : ScriptableRenderPass
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{
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public Material passMaterial;
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private LocalKeyword keyword;
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public ScriptableRenderPassInput inputReq = ScriptableRenderPassInput.None;
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public override void Configure(CommandBuffer cmd, RenderTextureDescriptor cameraTextureDescriptor)
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{
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if (passMaterial != null)
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{
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keyword = new LocalKeyword(passMaterial.shader, "_FLIPY");
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}
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ConfigureInput(inputReq);
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}
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public override void Execute(ScriptableRenderContext context, ref RenderingData renderingData)
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{
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OasisFogVolumeComponent volumeComponent = VolumeManager.instance.stack.GetComponent<OasisFogVolumeComponent>();
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float fogDensity = volumeComponent.Density.value;
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if (passMaterial == null || fogDensity < Mathf.Epsilon) return;
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var cmd = CommandBufferPool.Get("CameraFullscreenQuad");
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float fogStartDistance = volumeComponent.StartDistance.value;
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Color fogTint = volumeComponent.Tint.value;
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float fogSunScatteringIntensity = volumeComponent.SunScatteringIntensity.value;
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Vector2 fogHeightRange = volumeComponent.HeightRange.value;
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passMaterial.SetColor("_Tint", fogTint);
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passMaterial.SetFloat("_Density", fogDensity);
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passMaterial.SetFloat("_StartDistance", fogStartDistance);
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passMaterial.SetFloat("_SunScatteringIntensity", fogSunScatteringIntensity);
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passMaterial.SetVector("_Height_Range", fogHeightRange);
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var flipY = renderingData.cameraData.IsRenderTargetProjectionMatrixFlipped(renderingData.cameraData.renderer.cameraColorTargetHandle);
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passMaterial.SetKeyword(keyword, flipY);
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var cam = renderingData.cameraData.camera;
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passMaterial.SetMatrix("_InverseViewProjection", (GL.GetGPUProjectionMatrix(cam.projectionMatrix, false) * cam.worldToCameraMatrix).inverse);
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CoreUtils.DrawFullScreen(cmd, passMaterial);
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context.ExecuteCommandBuffer(cmd);
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cmd.Clear();
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}
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}
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}
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