75 lines
3.4 KiB
C#
75 lines
3.4 KiB
C#
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using System;
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using System.Collections.Generic;
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using UnityEngine.Rendering.RenderGraphModule;
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namespace UnityEngine.Rendering.Universal
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{
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/// <summary>
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/// Let customizable actions inject commands to capture the camera output.
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///
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/// You can use this pass to inject capture commands into a command buffer
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/// with the goal of having camera capture happening in external code.
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/// </summary>
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internal class CapturePass : ScriptableRenderPass
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{
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RTHandle m_CameraColorHandle;
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public CapturePass(RenderPassEvent evt)
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{
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base.profilingSampler = new ProfilingSampler("Capture Camera output");
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renderPassEvent = evt;
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}
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/// <inheritdoc/>
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[Obsolete(DeprecationMessage.CompatibilityScriptingAPIObsolete, false)]
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public override void Execute(ScriptableRenderContext context, ref RenderingData renderingData)
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{
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CommandBuffer cmdBuf = renderingData.commandBuffer;
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m_CameraColorHandle = renderingData.cameraData.renderer.GetCameraColorBackBuffer(cmdBuf);
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using (new ProfilingScope(cmdBuf, profilingSampler))
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{
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var colorAttachmentIdentifier = m_CameraColorHandle.nameID;
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var captureActions = renderingData.cameraData.captureActions;
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for (captureActions.Reset(); captureActions.MoveNext();)
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captureActions.Current(colorAttachmentIdentifier, renderingData.commandBuffer);
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}
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}
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private class UnsafePassData
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{
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internal TextureHandle source;
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public IEnumerator<Action<RenderTargetIdentifier, CommandBuffer>> captureActions;
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}
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// This function needs to add an unsafe render pass to Render Graph because a raster render pass, which is typically
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// used for rendering with Render Graph, cannot perform the texture readback operations performed with the command
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// buffer in CameraTextureProvider. Unsafe passes can do certain operations that raster render passes cannot do and
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// have access to the full command buffer API.
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public override void RecordRenderGraph(RenderGraph renderGraph, ContextContainer frameData)
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{
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UniversalResourceData resourceData = frameData.Get<UniversalResourceData>();
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UniversalCameraData cameraData = frameData.Get<UniversalCameraData>();
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using (var builder = renderGraph.AddUnsafePass<UnsafePassData>(passName, out var passData, profilingSampler))
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{
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// Setup up the pass data with cameraColor, which has the correct orientation and position in a built player
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passData.source = resourceData.cameraColor;
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passData.captureActions = cameraData.captureActions;
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// Setup up the builder
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builder.AllowPassCulling(false);
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builder.UseTexture(resourceData.cameraColor);
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builder.SetRenderFunc((UnsafePassData data, UnsafeGraphContext unsafeContext) =>
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{
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var nativeCommandBuffer = CommandBufferHelpers.GetNativeCommandBuffer(unsafeContext.cmd);
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var captureActions = data.captureActions;
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for (data.captureActions.Reset(); data.captureActions.MoveNext();)
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captureActions.Current(data.source, nativeCommandBuffer);
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});
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}
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}
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}
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}
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