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a1c98a2d8b3..30f63a1259c 100644 --- a/TestProjects/HDRP_DXR_Tests/ProjectSettings/EditorBuildSettings.asset +++ b/TestProjects/HDRP_DXR_Tests/ProjectSettings/EditorBuildSettings.asset @@ -164,6 +164,9 @@ EditorBuildSettings: - enabled: 1 path: Assets/Scenes/713_PointShadow_Matte.unity guid: 7e23108915e5705409db2943ac41fc38 + - enabled: 1 + path: Assets/Scenes/717_DirectionalLightTransmission.unity + guid: ba799739088f73744873fb5720fcddd3 - enabled: 1 path: Assets/Scenes/801_SubSurfaceScatteringDeferred.unity guid: c939ce56b901d264baab16d584624b30 diff --git a/com.unity.render-pipelines.high-definition/CHANGELOG.md b/com.unity.render-pipelines.high-definition/CHANGELOG.md index 06b51662854..00c46562a57 100644 --- a/com.unity.render-pipelines.high-definition/CHANGELOG.md +++ b/com.unity.render-pipelines.high-definition/CHANGELOG.md @@ -38,6 +38,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0. - Added a Scale Mode setting for Decals. - Added LTC Fitting tools for all BRDFs that HDRP supports. - Added Area Light support for Hair and Fabric master nodes. +- Added a fallback for the ray traced directional shadow in case of a transmission (case 1307870). ### Fixed - Fixed Intensity Multiplier not affecting realtime global illumination. @@ -125,6 +126,9 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0. - Fixed issue with Decal projector edge on Metal (case 1286074) - Fixed Exposure Frame Settings control issues on Planar reflection probes (case 1312153). Dynamic reflections now keep their own exposure relative to their parent camera. - Fixed multicamera rendering for Dynamic Resolution Scaling using dx12 hardware mode. Using a planar reflection probe (another render camera) should be safe. +- Fixed Render Graph Debug UI not refreshing correctly in the Render Pipeline Debugger. +- Fixed SSS materials in planar reflections (case 1319027). +- Fixed Decal's pivot edit mode 2D slider gizmo not supporting multi-edition ### Changed - Changed Window/Render Pipeline/HD Render Pipeline Wizard to Window/Rendering/HDRP Wizard diff --git a/com.unity.render-pipelines.high-definition/Documentation~/Frame-Settings.md b/com.unity.render-pipelines.high-definition/Documentation~/Frame-Settings.md index 37fd6c6f026..fe1ff211161 100644 --- a/com.unity.render-pipelines.high-definition/Documentation~/Frame-Settings.md +++ b/com.unity.render-pipelines.high-definition/Documentation~/Frame-Settings.md @@ -43,6 +43,7 @@ These settings determine the method that the Cameras and Reflection Probes using | - **Transparent Object Motion** | Enable the checkbox to allow HDRP to write the velocity of transparent GameObjects to the velocity buffer. To make HDRP write transparent GameObjects to the velocity buffer, you must also enable the **Transparent Writes Velocity** checkbox on each transparent Material. Enabling this feature means that effects, such as motion blur, affect transparent GameObjects. This is useful for alpha blended objects like hair. | | **Refraction** | Enable the checkbox to make HDRP process Refraction for Cameras/Reflection Probes using these Frame Settings. Refraction is when a transparent surface scatters light that passes through it. This add a resolve of ColorBuffer after the drawing of opaque materials to be use for Refraction effect during transparent pass. | | **Distortion** | Enable the checkbox to make HDRP process Distortion. Enabling this feature causes HDRP to calculate a distortion pass. This allows Meshes with transparent Materials to distort the light that enters them. | +| - **Rough Distortion** | Enable the checkbox to allow HDRP to modulate distortion based on the roughness of the material. If you enable this option, HDRP generates a color pyramid with mipmaps to process distortion. This increases the resource intensity of the distortion effect. | | **Post-process** | Enable the checkbox to make HDRP perform a Post-processing pass. Disable this feature to remove all post-processing effects from this Camera/Reflection Probe. | | - **Custom Post-process** | Enable the checkbox to allow HDRP to execute custom post processes. Disable this feature to remove all custom post-processing effects from this Camera/Reflection Probe. | | - **Stop NaN** | Enable the checkbox to allow HDRP to replace pixel values that are not a number (NaN) with black pixels for [Cameras](HDRP-Camera.md) that have **Stop NaNs** enabled. | diff --git a/com.unity.render-pipelines.high-definition/Documentation~/Images/MotionVectors2.png b/com.unity.render-pipelines.high-definition/Documentation~/Images/MotionVectors2.png deleted file mode 100644 index f09884a7516..00000000000 --- a/com.unity.render-pipelines.high-definition/Documentation~/Images/MotionVectors2.png +++ /dev/null @@ -1,3 +0,0 @@ -version https://git-lfs.github.com/spec/v1 -oid sha256:7042a3f31bec9f6665776ff8afb9ac8167eafc76bc16ed81cfffc1ad6db4b66c -size 36555 diff --git a/com.unity.render-pipelines.high-definition/Documentation~/Light-Component.md b/com.unity.render-pipelines.high-definition/Documentation~/Light-Component.md index e64b68bcc17..a3433ebc34f 100644 --- a/com.unity.render-pipelines.high-definition/Documentation~/Light-Component.md +++ b/com.unity.render-pipelines.high-definition/Documentation~/Light-Component.md @@ -63,9 +63,9 @@ To make the Light work with the **Animation window**, when you click on the **Ad | **Type** | **Description** | | --------------- | ------------------------------------------------------------ | | **Spot** | Emits light from a specified location and range over which the light diminishes. A Spot Light constrains the light it emits to an angle, which results in a cone-shaped region of illumination. The center of the cone points in the forward direction (z-axis) of the Light GameObject. Light also diminishes at the edges of the Spot Light’s cone. Increase the **Spot Angle** to increase the width of the cone. | -| **Directional** | Creates effects that are similar to sunlight in your Scene. Like sunlight, Directional Lights are distant light sources that HDRP treats as though they are infinitely far away. A Directional Light does not have any identifiable source position, and you can place the Light GameObject anywhere in the Scene. A **Directional Light** illuminates all GameObjects in the Scene as if the Light rays are parallel and always from the same direction. The Light disregards the distance between the Light itself and the target GameObject, so the Light does not diminish with distance. | -| **Point** | Projects light out equally in all directions from a point in space. The direction of light hitting a surface is the line from the point of contact back to the center of the Light GameObject. The light intensity diminishes with increased distance from the Light, and it reaches zero at the distance specified in the **Range** field. Light intensity is inversely proportional to the square of the distance from the source. This is known as the [Inverse-square law](https://en.wikipedia.org/wiki/Inverse-square_law), and is similar to how light behaves in the real world. | -| **Area** | Projects light from a surface. Light shines in all directions uniformly from the surface of the rectangle.| +| **Directional** | Creates effects that are similar to sunlight in your Scene. Like sunlight, Directional Lights are distant light sources that HDRP treats as though they are infinitely far away. A Directional Light does not have any identifiable source position, and you can place the Light GameObject anywhere in the Scene.
A **Directional Light** illuminates all GameObjects in the Scene as if the Light rays are parallel and always from the same direction. The Light disregards the distance between the Light itself and the target GameObject, so the Light does not diminish with distance | +| **Point** | Projects light out equally in all directions from a point in space. The direction of light hitting a surface is the line from the point of contact back to the center of the Light GameObject. The light intensity diminishes with increased distance from the Light, and it reaches zero at the distance specified in the **Range** field.
Light intensity is inversely proportional to the square of the distance from the source. This is known as the [Inverse-square law](https://en.wikipedia.org/wiki/Inverse-square_law), and is similar to how light behaves in the real world. | +| **Area** | Projects light from a surface. Light shines in all directions uniformly from the surface of the rectangle. | ##### Limitations diff --git a/com.unity.render-pipelines.high-definition/Documentation~/Material-Type.md b/com.unity.render-pipelines.high-definition/Documentation~/Material-Type.md index 4f0b3442839..992f24a80df 100644 --- a/com.unity.render-pipelines.high-definition/Documentation~/Material-Type.md +++ b/com.unity.render-pipelines.high-definition/Documentation~/Material-Type.md @@ -4,12 +4,12 @@ The **Material Type** property allows you to give your Material a type, which al | **Material Type** | **Description** | | ------------------------- | ------------------------------------------------------------ | -| **Subsurface Scattering** | Applies the subsurface scattering workflow to the Material. Subsurface scattering simulates the way light interacts with and penetrates translucent objects, such as skin or plant leaves. When light penetrates the surface of a subsurface scattering Material, it scatters and blurs before exiting the surface at a different point. | +| **Subsurface Scattering** | Applies the subsurface scattering workflow to the Material. Subsurface scattering simulates the way light interacts with and penetrates translucent objects, such as skin. When light penetrates the surface of a subsurface scattering Material, it scatters and blurs before exiting the surface at a different point. | | **Standard** | Applies the basic metallic Shader workflow to the Material. This is the default **Material Type**. | | **Anisotropy** | Applies the anisotropic workflow to the Material. The highlights of Anisotropic surfaces change in appearance as you view the Material from different angles. Use this **Material Type** to create Materials with anisotropic highlights. For example, brushed metal or velvet. | | **Iridescence** | Applies the Iridescence workflow to the Material. Iridescent surfaces appear to gradually change color as the angle of view or angle of illumination changes. Use this **Material Type** to create Materials like soap bubbles, iridescent metal, or insect wings. | | **Specular Color** | Applies the Specular Color workflow to the Material. Use this **Material Type** to create Materials with a coloured specular highlight. This is similar to the [built-in Specular Shader](https://docs.unity3d.com/Manual/StandardShaderMaterialParameterSpecular.html). | -| **Translucent** | Applies the Translucent workflow to the Material. Use this **Material Type**, and a thickness map, to simulate a translucent Material. In contrast to **Subsurface Scattering** Materials, **Translucent** Materials do not blur light that transmits through the Material. | +| **Translucent** | Applies the Translucent workflow to the Material. Use this **Material Type**, and a thickness map, to simulate a translucent object, such as a plant leaf. In contrast to **Subsurface Scattering** Materials, **Translucent** Materials do not blur light that transmits through the Material. | ![](Images/MaterialType1.png) diff --git a/com.unity.render-pipelines.high-definition/Documentation~/Motion-Vectors.md b/com.unity.render-pipelines.high-definition/Documentation~/Motion-Vectors.md index f7067d9f847..59b4d0f9032 100644 --- a/com.unity.render-pipelines.high-definition/Documentation~/Motion-Vectors.md +++ b/com.unity.render-pipelines.high-definition/Documentation~/Motion-Vectors.md @@ -4,33 +4,40 @@ Motion vectors capture the per-pixel, screen-space motion of GameObjects from on HDRP uses motion vectors for various effects such as [temporal anti-aliasing (TAA)](Glossary.md#TemporalAntiAliasing) and motion blur. -## Using motion vectors +HDRP calculates motion vectors in two stages: -To use motion vectors in HDRP, you must enable them: +1. HDRP first calculates object motion vectors. Object motion vectors are motion vectors that HDRP calculates based on the screen-space movement of GameObjects. +2. HDRP then calculates camera motion vectors. These are motion vectors caused by the movement of the Camera. HDRP calculates camera motion vectors for pixels that did not write motion vectors during the first stage. -1. In your Unity Project’s [HDRP Asset](HDRP-Asset.md) -2. In your [Frame Settings](Frame-Settings.md) +## Using motion vectors -In the Inspector for your HDRP Asset, navigate to the **Rendering** section and enable the **Motion Vectors** checkbox. You can then either enable motion vectors for all Cameras or on an individual, per-Camera level. To enable motion vectors for all Cameras, navigate to **Default Frame Settings For > Rendering** and enable the **Motion Vectors** checkbox. This enables Camera motion vectors. Now you can also enable the **Object Motion Vectors** checkbox. If you do this, HDRP calculates object motion vectors. If you keep this checkbox disabled, HDRP only calculates Camera motion vectors. +To use motion vectors in HDRP, you must first enable them: -HDRP calculates motion vectors in two stages: +1. In your Unity Project’s [HDRP Asset](HDRP-Asset.md): + 1. Select the HDRP Asset and view it in the Inspector window. + 2. Go to the **Rendering** section and enable **Motion Vectors**. +2. In [Frame Settings](Frame-Settings.md). You can either enable motion vectors for all Cameras or on an individual, per-Camera level. + 1. To enable motion vectors for all Cameras, open the [HDRP Default Settings](Default-Settings-Window.md) Project Settings tab (menu: **Edit** > **Project Settings** > **HDRP Default Settings**), then set **Default Frame Settings For** to **Camera**. To enable motion vectors for a particular Camera, select the Camera and, in the Inspector, enable **Custom Frame Settings**. + 3. In the **Rendering Section**, enable **Motion Vectors**. This enables camera motion vectors. + 3. To enable motion vectors for opaque GameObjects, enable **Opaque Object Motion**. To enable motion vectors for transparent GameObjects, enable **Transparent Object Motion**. -1. HDRP first calculates object motion vectors. To make a Mesh Renderer write object motion vectors, in its Inspector, go to **Additional Settings** and select **Per Object Motion** from the **Motion Vectors** drop-down. HDRP now calculates object motion vectors for this Mesh Renderer, if you enable **Object Motion Vectors** in the Frame Settings. -![](Images/MotionVectors1.png) -2. HDRP then calculates Camera motion vectors, which are caused by the movement of the Camera. This is for pixels that did not write motion vectors during the first stage. To make HDRP calculate Camera motion vectors for a Mesh Renderer, in the Inspector for the Mesh Renderer, go to **Additional Settings** and select **Camera Motion Only** from the **Motion Vectors** drop-down. -If you do not want HDRP to calculate motion vectors for a Mesh Renderer at all, in the Inspector for the Mesh Renderer, go to **Additional Settings** and select **Force No Motion** from the **Motion Vectors** drop-down. +HDRP can now render motion vectors. If you enabled object motion vectors, be aware that, by default, new Mesh Renderers write object motion vectors. To change this behavior, select the Mesh Renderer and, in the Inspector, change the value of the **Motion Vectors** property.
![](Images/MotionVectors1.png) +The options are: + +* **Camera Motion Only**: HDRP only calculates camera motion vectors for the area of the screen this GameObject fills. +* **Per Object Motion**: HDRP calculates motion vectors for this GameObject if: + * The GameObject moves and the camera does not. + * The camera moves and the GamaObject does not. + * Both the GameObject and the camera move. +* **Force No Motion**: HDRP does not calculate any motion vectors for the area of the screen this GameObject fills. ## Motion vectors for transparent objects By default, HDRP does not render motion vectors for transparent Materials. This is because motion vectors from transparent GameObjects overwrite motion vectors for GameObjects behind them. For example, a window would overwrite the motion vectors for a bird flying behind it. -To make HDRP render motion vectors for transparent Materials: - -1. In the Inspector for your HDRP Asset, go to **Default Frame Settings For > Rendering** and enable the **Transparent Writes Motion Vectors** checkbox. -2. In the Inspector for your transparent Material, go to **Surface Options** and enable the **Transparent Writes Motion Vectors** checkbox. - -![](Images/MotionVectors2.png) +To make HDRP render motion vectors for transparent Materials, see the steps in [Using motion vectors](#using-motion-vectors) and enable **Transparent Object Motion**. When transparent objects write motion vectors on a given pixel, they replace that pixel’s previous motion vectors. This is particularly useful for Materials that use alpha clipping, such as hair. + If you use motion blur in conjunction with transparent GameObjects, be aware that motion blur also uses depth information. This means that you should make the Material write depth information too. To do this, go to **Surface Options** and enable the **Transparent Depth Postpass** checkbox. diff --git a/com.unity.render-pipelines.high-definition/Documentation~/Override-Screen-Space-GI.md b/com.unity.render-pipelines.high-definition/Documentation~/Override-Screen-Space-GI.md index 7790aac997e..8ce35f03ce2 100644 --- a/com.unity.render-pipelines.high-definition/Documentation~/Override-Screen-Space-GI.md +++ b/com.unity.render-pipelines.high-definition/Documentation~/Override-Screen-Space-GI.md @@ -1,8 +1,10 @@ # Screen Space Global Illumination -The **Screen Space Illumination** (SSGI) override is a High Definition Render Pipeline (HDRP) feature that uses the depth and color buffer of the screen to calculate diffuse light bounces. +The **Screen Space Global Illumination** (SSGI) override is a High Definition Render Pipeline (HDRP) feature that uses the depth and color buffer of the screen to calculate diffuse light bounces. -HDRP implements [ray-traced global illumination](Ray-Traced-Global-Illumination.md) on top of this override. This means that the properties visible in the Inspector change depending on whether or not you enable ray tracing. +HDRP implements [ray-traced global illumination](Ray-Traced-Global-Illumination.md) (RTGI) on top of this override. This means that the properties visible in the Inspector change depending on whether or not you enable ray tracing. + +SSGI and RTGI completely replace all [lightmap](https://docs.unity3d.com/Manual/Lightmapping.html) and [Light Probe](https://docs.unity3d.com/Manual/LightProbes.html) data. If you enable this override and the Volume affects the Camera, Light Probes, and the ambient probe, stop contributing to lighting for GameObjects. ![](Images/HDRPFeatures-SSGI.png) diff --git a/com.unity.render-pipelines.high-definition/Documentation~/Ray-Traced-Shadows.md b/com.unity.render-pipelines.high-definition/Documentation~/Ray-Traced-Shadows.md index 13bac8a3757..6f514837fb1 100644 --- a/com.unity.render-pipelines.high-definition/Documentation~/Ray-Traced-Shadows.md +++ b/com.unity.render-pipelines.high-definition/Documentation~/Ray-Traced-Shadows.md @@ -51,6 +51,8 @@ Ray-traced shadows offer an alternative to the cascade shadow map that Direction Ray-traced shadows allow for transparent and transmissive GameObjects, lit by Directional Lights, to cast colored shadows. +**Note**: When you use a Directional Light with a transmissive GameObject, HDRP displays rasterized shadows on the reverse side of the GameObject. + ![](Images/RayTracedShadows9.png) **Ray-traced Directional Light shadows with colored shadows** @@ -87,7 +89,7 @@ Ray-traced shadows offer an alternative to the shadow map that Point and Spot Li **Ray-traced Point Light shadows (radius = 0.5m)** -Ray-traced shadows offer the possibility of semi-transparent shadows for Point Lights cast by tranparent and transmissive GameObjects. +Ray-traced shadows offer the possibility of semi-transparent shadows for Point Lights cast by transparent and transmissive GameObjects. ![](Images/RayTracedShadows11.png) @@ -122,6 +124,8 @@ Ray-traced shadows offer an alternative to the [exponential variance shadow map] **Note**: When rendering in [deferred mode](Forward-And-Deferred-Rendering.md), HDRP provides accurate ray-traced area light shadows for the [Lit](Lit-Shader.md) shader. When HDRP renders for any other shader, or for the Lit shader in forward mode, it uses an approximation to calculate ray-traced shadows for area lights. This approximation is not perfectly accurate, but does produce plausible results. +When you use a Rectangle Light with a transmissive GameObject, HDRP displays rasterized shadows on the reverse side of the GameObject + ### Properties | Property | Description | diff --git a/com.unity.render-pipelines.high-definition/Editor/Material/Decal/ProjectedTransform.cs b/com.unity.render-pipelines.high-definition/Editor/Material/Decal/ProjectedTransform.cs index 5b1dcc86277..4f16f49d1c4 100644 --- a/com.unity.render-pipelines.high-definition/Editor/Material/Decal/ProjectedTransform.cs +++ b/com.unity.render-pipelines.high-definition/Editor/Material/Decal/ProjectedTransform.cs @@ -194,17 +194,18 @@ public static Vector3 DrawHandles(Vector3 position, float zProjectionDistance, Q verts[1] = sliderFaceProjected + (-Vector3.right + Vector3.up) * size2D; verts[2] = sliderFaceProjected + (-Vector3.right - Vector3.up) * size2D; verts[3] = sliderFaceProjected + (Vector3.right - Vector3.up) * size2D; + int id = GUIUtility.GetControlID(ids.xy, FocusType.Passive); float faceOpacity = 0.8f; - if (GUIUtility.hotControl == ids.xy) + if (GUIUtility.hotControl == id) Handles.color = Handles.selectedColor; - else if (IsHovering(ids.xy, Event.current)) + else if (IsHovering(id, Event.current)) faceOpacity = 0.4f; else faceOpacity = 0.1f; Color faceColor = new Color(Handles.zAxisColor.r, Handles.zAxisColor.g, Handles.zAxisColor.b, Handles.zAxisColor.a * faceOpacity); Handles.DrawSolidRectangleWithOutline(verts, faceColor, Color.clear); EditorGUI.BeginChangeCheck(); - sliderFaceProjected = Handles.Slider2D(ids.xy, sliderFaceProjected, Vector3.forward, Vector3.right, Vector3.up, size2D, Handles.RectangleHandleCap, s_IsGridSnappingActive() ? Vector2.zero : new Vector2(EditorSnapSettings.move[0], EditorSnapSettings.move[1]), false); + sliderFaceProjected = Handles.Slider2D(id, sliderFaceProjected, Vector3.forward, Vector3.right, Vector3.up, size2D, Handles.RectangleHandleCap, s_IsGridSnappingActive() ? Vector2.zero : new Vector2(EditorSnapSettings.move[0], EditorSnapSettings.move[1]), false); if (EditorGUI.EndChangeCheck()) { sliderRotatedWorldPos.x = sliderFaceProjected.x; diff --git a/com.unity.render-pipelines.high-definition/Runtime/Debug/DebugDisplay.cs b/com.unity.render-pipelines.high-definition/Runtime/Debug/DebugDisplay.cs index 02519ff8e5b..6f36fa986e0 100644 --- a/com.unity.render-pipelines.high-definition/Runtime/Debug/DebugDisplay.cs +++ b/com.unity.render-pipelines.high-definition/Runtime/Debug/DebugDisplay.cs @@ -1017,7 +1017,8 @@ void RefreshDecalsDebug(DebugUI.Field field, T value) void RefreshRenderingDebug(DebugUI.Field field, T value) { - UnregisterDebugItems(k_PanelRendering, m_DebugRenderingItems); + // Explicitly invoke the render debug unregister to handle render graph items. + UnregisterRenderingDebug(); RegisterRenderingDebug(); } diff --git a/com.unity.render-pipelines.high-definition/Runtime/Lighting/LightLoop/LightLoop.cs b/com.unity.render-pipelines.high-definition/Runtime/Lighting/LightLoop/LightLoop.cs index 3484672b742..ea6762c1849 100644 --- a/com.unity.render-pipelines.high-definition/Runtime/Lighting/LightLoop/LightLoop.cs +++ b/com.unity.render-pipelines.high-definition/Runtime/Lighting/LightLoop/LightLoop.cs @@ -118,6 +118,7 @@ class LightDefinitions public static uint s_MaterialFeatureMaskFlags = 0x000FFF; // don't use all bits just to be safe from signed and/or float conversions :/ // Screen space shadow flags + public static uint s_RayTracedScreenSpaceShadowFlag = 0x1000; public static uint s_ScreenSpaceColorShadowFlag = 0x100; public static uint s_InvalidScreenSpaceShadow = 0xff; public static uint s_ScreenSpaceShadowIndexMask = 0xff; @@ -1153,6 +1154,11 @@ internal void GetDirectionalLightData(CommandBuffer cmd, HDCamera hdCamera, Visi { screenSpaceShadowslot++; } + + // Raise the ray tracing flag in case the light is ray traced + if (additionalLightData.WillRenderRayTracedShadow()) + lightData.screenSpaceShadowIndex |= (int)LightDefinitions.s_RayTracedScreenSpaceShadowFlag; + screenSpaceShadowIndex++; m_ScreenSpaceShadowsUnion.Add(additionalLightData); } diff --git a/com.unity.render-pipelines.high-definition/Runtime/Lighting/LightLoop/LightLoop.cs.hlsl b/com.unity.render-pipelines.high-definition/Runtime/Lighting/LightLoop/LightLoop.cs.hlsl index 123382ceff5..dca8236c2c2 100644 --- a/com.unity.render-pipelines.high-definition/Runtime/Lighting/LightLoop/LightLoop.cs.hlsl +++ b/com.unity.render-pipelines.high-definition/Runtime/Lighting/LightLoop/LightLoop.cs.hlsl @@ -55,6 +55,7 @@ #define LIGHT_FEATURE_MASK_FLAGS_OPAQUE (16642048) #define LIGHT_FEATURE_MASK_FLAGS_TRANSPARENT (16510976) #define MATERIAL_FEATURE_MASK_FLAGS (4095) +#define RAY_TRACED_SCREEN_SPACE_SHADOW_FLAG (4096) #define SCREEN_SPACE_COLOR_SHADOW_FLAG (256) #define INVALID_SCREEN_SPACE_SHADOW (255) #define SCREEN_SPACE_SHADOW_INDEX_MASK (255) diff --git a/com.unity.render-pipelines.high-definition/Runtime/Lighting/LightLoop/LightLoop.hlsl b/com.unity.render-pipelines.high-definition/Runtime/Lighting/LightLoop/LightLoop.hlsl index 7cc10b88a80..a73a4affc82 100644 --- a/com.unity.render-pipelines.high-definition/Runtime/Lighting/LightLoop/LightLoop.hlsl +++ b/com.unity.render-pipelines.high-definition/Runtime/Lighting/LightLoop/LightLoop.hlsl @@ -81,6 +81,17 @@ void ApplyDebugToLighting(LightLoopContext context, inout BuiltinData builtinDat #endif } +bool UseScreenSpaceShadow(DirectionalLightData light, float3 normalWS) +{ + // Two different options are possible here + // - We have a ray trace shadow in which case we have no valid signal for a transmission and we need to fallback on the rasterized shadow + // - We have a screen space shadow and it already contains the transmission shadow and we can use it straight away + bool visibleLight = dot(normalWS, -light.forward) > 0.0; + bool validScreenSpaceShadow = (light.screenSpaceShadowIndex & SCREEN_SPACE_SHADOW_INDEX_MASK) != INVALID_SCREEN_SPACE_SHADOW; + bool rayTracedShadow = (light.screenSpaceShadowIndex & RAY_TRACED_SCREEN_SPACE_SHADOW_FLAG) != 0; + return (validScreenSpaceShadow && ((rayTracedShadow && visibleLight) || !rayTracedShadow)); +} + void ApplyDebug(LightLoopContext context, PositionInputs posInput, BSDFData bsdfData, inout LightLoopOutput lightLoopOutput) { #ifdef DEBUG_DISPLAY @@ -122,7 +133,7 @@ void ApplyDebug(LightLoopContext context, PositionInputs posInput, BSDFData bsdf DirectionalLightData light = _DirectionalLightDatas[_DirectionalShadowIndex]; #if defined(SCREEN_SPACE_SHADOWS_ON) && !defined(_SURFACE_TYPE_TRANSPARENT) - if ((light.screenSpaceShadowIndex & SCREEN_SPACE_SHADOW_INDEX_MASK) != INVALID_SCREEN_SPACE_SHADOW) + if (UseScreenSpaceShadow(light, bsdfData.normalWS)) { shadow = GetScreenSpaceColorShadow(posInput, light.screenSpaceShadowIndex).SHADOW_TYPE_SWIZZLE; } @@ -202,7 +213,7 @@ void LightLoop( float3 V, PositionInputs posInput, PreLightData preLightData, BS DirectionalLightData light = _DirectionalLightDatas[_DirectionalShadowIndex]; #if defined(SCREEN_SPACE_SHADOWS_ON) && !defined(_SURFACE_TYPE_TRANSPARENT) - if ((light.screenSpaceShadowIndex & SCREEN_SPACE_SHADOW_INDEX_MASK) != INVALID_SCREEN_SPACE_SHADOW) + if (UseScreenSpaceShadow(light, bsdfData.normalWS)) { context.shadowValue = GetScreenSpaceColorShadow(posInput, light.screenSpaceShadowIndex).SHADOW_TYPE_SWIZZLE; } diff --git a/com.unity.render-pipelines.high-definition/Runtime/Material/SubsurfaceScattering/SubsurfaceScattering.compute b/com.unity.render-pipelines.high-definition/Runtime/Material/SubsurfaceScattering/SubsurfaceScattering.compute index ce09ed1b226..39612c666a0 100644 --- a/com.unity.render-pipelines.high-definition/Runtime/Material/SubsurfaceScattering/SubsurfaceScattering.compute +++ b/com.unity.render-pipelines.high-definition/Runtime/Material/SubsurfaceScattering/SubsurfaceScattering.compute @@ -107,12 +107,12 @@ float4 LoadSampleFromVideoMemory(int2 pixelCoord) // Returns {irradiance, linearDepth}. float4 LoadSample(int2 pixelCoord, int2 cacheOffset) { + float4 value; + #if SSS_USE_LDS_CACHE int2 cacheCoord = pixelCoord - cacheOffset; bool isInCache = max((uint)cacheCoord.x, (uint)cacheCoord.y) < TEXTURE_CACHE_SIZE_1D; - float4 value; - if (isInCache) { value = LoadSampleFromCacheMemory(cacheCoord); @@ -168,7 +168,7 @@ float3 ComputeBilateralWeight(float xy2, float z, float mmPerUnit, float3 S, flo void EvaluateSample(uint i, uint n, int2 pixelCoord, int2 cacheOffset, float3 S, float d, float3 centerPosVS, float mmPerUnit, float pixelsPerMm, float phase, float3 tangentX, float3 tangentY, float4x4 projMatrix, - inout float3 totalIrradiance, inout float3 totalWeight) + inout float3 totalIrradiance, inout float3 totalWeight, float linearDepth) { // The sample count is loop-invariant. const float scale = rcp(n); @@ -217,7 +217,7 @@ void EvaluateSample(uint i, uint n, int2 pixelCoord, int2 cacheOffset, { // Apply bilateral weighting. float viewZ = textureSample.a; - float relZ = viewZ - centerPosVS.z; + float relZ = viewZ - linearDepth; float3 weight = ComputeBilateralWeight(xy2, relZ, mmPerUnit, S, rcpPdf); // Note: if the texture sample if off-screen, (z = 0) -> (viewZ = far) -> (weight ≈ 0). @@ -383,7 +383,7 @@ void SubsurfaceScattering(uint3 groupId : SV_GroupID, // Compute the view-space dimensions of the pixel as a quad projected onto geometry. // Assuming square pixels, both X and Y are have the same dimensions. - float unitsPerPixel = 2 * abs(cornerPosVS.x - centerPosVS.x); + float unitsPerPixel = max(0.0001f, 2 * abs(cornerPosVS.x - centerPosVS.x)); float pixelsPerMm = rcp(unitsPerPixel) * unitsPerMm; // Area of a disk. @@ -453,13 +453,14 @@ void SubsurfaceScattering(uint3 groupId : SV_GroupID, float3 totalIrradiance = 0; float3 totalWeight = 0; + float linearDepth = LinearEyeDepth(centerDepth, _ZBufferParams); for (uint i = 0; i < n; i++) { // Integrate over the image or tangent plane in the view space. EvaluateSample(i, n, pixelCoord, cacheOffset, S, d, centerPosVS, mmPerUnit, pixelsPerMm, phase, tangentX, tangentY, projMatrix, - totalIrradiance, totalWeight); + totalIrradiance, totalWeight, linearDepth); } // Total weight is 0 for color channels without scattering.