88 lines
3.6 KiB
C#
88 lines
3.6 KiB
C#
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using System;
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using UnityEngine.Experimental.Rendering;
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namespace UnityEngine.Rendering.Universal.Internal
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{
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/// <summary>
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/// Resolves shadows in a screen space texture.
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/// </summary>
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public class ScreenSpaceShadowResolvePass : ScriptableRenderPass
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{
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Material m_ScreenSpaceShadowsMaterial;
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RenderTargetHandle m_ScreenSpaceShadowmap;
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RenderTextureDescriptor m_RenderTextureDescriptor;
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public ScreenSpaceShadowResolvePass(RenderPassEvent evt, Material screenspaceShadowsMaterial)
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{
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base.profilingSampler = new ProfilingSampler(nameof(ScreenSpaceShadowResolvePass));
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m_ScreenSpaceShadowsMaterial = screenspaceShadowsMaterial;
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m_ScreenSpaceShadowmap.Init("_ScreenSpaceShadowmapTexture");
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renderPassEvent = evt;
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}
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public void Setup(RenderTextureDescriptor baseDescriptor)
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{
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m_RenderTextureDescriptor = baseDescriptor;
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m_RenderTextureDescriptor.depthBufferBits = 0;
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m_RenderTextureDescriptor.msaaSamples = 1;
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m_RenderTextureDescriptor.graphicsFormat = RenderingUtils.SupportsGraphicsFormat(GraphicsFormat.R8_UNorm, FormatUsage.Linear | FormatUsage.Render)
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? GraphicsFormat.R8_UNorm
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: GraphicsFormat.B8G8R8A8_UNorm;
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}
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public override void Configure(CommandBuffer cmd, RenderTextureDescriptor cameraTextureDescriptor)
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{
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cmd.GetTemporaryRT(m_ScreenSpaceShadowmap.id, m_RenderTextureDescriptor, FilterMode.Bilinear);
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RenderTargetIdentifier screenSpaceOcclusionTexture = m_ScreenSpaceShadowmap.Identifier();
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ConfigureTarget(screenSpaceOcclusionTexture);
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ConfigureClear(ClearFlag.All, Color.white);
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}
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/// <inheritdoc/>
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public override void Execute(ScriptableRenderContext context, ref RenderingData renderingData)
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{
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if (m_ScreenSpaceShadowsMaterial == null)
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{
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Debug.LogErrorFormat("Missing {0}. {1} render pass will not execute. Check for missing reference in the renderer resources.", m_ScreenSpaceShadowsMaterial, GetType().Name);
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return;
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}
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if (renderingData.lightData.mainLightIndex == -1)
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return;
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Camera camera = renderingData.cameraData.camera;
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CommandBuffer cmd = CommandBufferPool.Get();
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using (new ProfilingScope(cmd, ProfilingSampler.Get(URPProfileId.ResolveShadows)))
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{
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if (!renderingData.cameraData.xr.enabled)
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{
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cmd.SetViewProjectionMatrices(Matrix4x4.identity, Matrix4x4.identity);
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cmd.DrawMesh(RenderingUtils.fullscreenMesh, Matrix4x4.identity, m_ScreenSpaceShadowsMaterial);
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cmd.SetViewProjectionMatrices(camera.worldToCameraMatrix, camera.projectionMatrix);
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}
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else
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{
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// Avoid setting and restoring camera view and projection matrices when in stereo.
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RenderTargetIdentifier screenSpaceOcclusionTexture = m_ScreenSpaceShadowmap.Identifier();
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Blit(cmd, screenSpaceOcclusionTexture, screenSpaceOcclusionTexture, m_ScreenSpaceShadowsMaterial);
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}
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}
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context.ExecuteCommandBuffer(cmd);
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CommandBufferPool.Release(cmd);
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}
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/// <inheritdoc/>
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public override void OnCameraCleanup(CommandBuffer cmd)
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{
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if (cmd == null)
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throw new ArgumentNullException("cmd");
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cmd.ReleaseTemporaryRT(m_ScreenSpaceShadowmap.id);
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}
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}
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}
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