Lw/receive shadows prop (#1830)

* Added support to receive shadows prop in standard PBS and Simple Lighting shaders. * Updated test scene * updated release notes * addressed PR comment. * updated test images for test 020. * merged test scene 020
6 年前 · 8f2d2fc8
--- a/com.unity.render-pipelines.lightweight/CHANGELOG.md
+++ b/com.unity.render-pipelines.lightweight/CHANGELOG.md

 ## [3.2.0-preview]
 ### Changed
+- Receive Shadows property is now exposed in the material instead of in the renderer.
 - The UI for Lightweight asset has been updated with new categories. A more clean structure and foldouts has been added to keep things organized.

 ### Fixed
--- a/com.unity.render-pipelines.lightweight/LWRP/Editor/ShaderGUI/LightweightShaderGUI.cs
+++ b/com.unity.render-pipelines.lightweight/LWRP/Editor/ShaderGUI/LightweightShaderGUI.cs
        public static GUIContent twoSidedText = new GUIContent("Two Sided", "Render front and back faces");
        public static GUIContent alphaClipText = new GUIContent("Alpha Clip", "Enable Alpha Clip");
        public static GUIContent alphaClipThresholdText = new GUIContent("Clip Threshold", "Threshold for alpha clip");
+        public static GUIContent receiveShadowText = new GUIContent("Receive Shadows", "Enables this material to receive shadows if there is at least one shadow casting light affecting it.");
        public static readonly string[] surfaceNames = Enum.GetNames(typeof(SurfaceType));
        public static readonly string[] blendNames = Enum.GetNames(typeof(BlendMode));
    }
    protected MaterialProperty cullingProp;
    protected MaterialProperty alphaClipProp;
    protected MaterialProperty alphaCutoffProp;
+    protected MaterialProperty receiveShadowsProp;
    private bool m_FirstTimeApply = true;

    public abstract void MaterialChanged(Material material);
        cullingProp = FindProperty("_Cull", properties);
        alphaClipProp = FindProperty("_AlphaClip", properties);
        alphaCutoffProp = FindProperty("_Cutoff", properties);
+        receiveShadowsProp = FindProperty("_ReceiveShadows", properties);
    }

    public virtual void ShaderPropertiesGUI(Material material)

        if (alphaClipProp.floatValue == 1)
            m_MaterialEditor.ShaderProperty(alphaCutoffProp, Styles.alphaClipThresholdText, MaterialEditor.kMiniTextureFieldLabelIndentLevel + 1);
+
+        EditorGUI.BeginChangeCheck();
+        bool receiveShadows = EditorGUILayout.Toggle(Styles.receiveShadowText, receiveShadowsProp.floatValue == 1.0f);
+        if (EditorGUI.EndChangeCheck())
+            receiveShadowsProp.floatValue = receiveShadows ? 1.0f : 0.0f;

        EditorGUILayout.Space();
    }
--- a/com.unity.render-pipelines.lightweight/LWRP/Editor/ShaderGUI/LightweightStandardGUI.cs
+++ b/com.unity.render-pipelines.lightweight/LWRP/Editor/ShaderGUI/LightweightStandardGUI.cs
            CoreUtils.SetKeyword(material, "_PARALLAXMAP", material.GetTexture("_ParallaxMap"));
            CoreUtils.SetKeyword(material, "_DETAIL_MULX2", material.GetTexture("_DetailAlbedoMap") || material.GetTexture("_DetailNormalMap"));

+            CoreUtils.SetKeyword(material, "_RECEIVE_SHADOWS_OFF", material.GetFloat("_ReceiveShadows") == 0.0f);
+
            // A material's GI flag internally keeps track of whether emission is enabled at all, it's enabled but has no effect
            // or is enabled and may be modified at runtime. This state depends on the values of the current flag and emissive color.
            // The fixup routine makes sure that the material is in the correct state if/when changes are made to the mode or color.
--- a/com.unity.render-pipelines.lightweight/LWRP/Editor/ShaderGUI/LightweightStandardSimpleLightingGUI.cs
+++ b/com.unity.render-pipelines.lightweight/LWRP/Editor/ShaderGUI/LightweightStandardSimpleLightingGUI.cs
        MaterialEditor.FixupEmissiveFlag(material);
        bool shouldEmissionBeEnabled = (material.globalIlluminationFlags & MaterialGlobalIlluminationFlags.EmissiveIsBlack) == 0;
        CoreUtils.SetKeyword(material, "_EMISSION", shouldEmissionBeEnabled);
+
+        CoreUtils.SetKeyword(material, "_RECEIVE_SHADOWS_OFF", material.GetFloat("_ReceiveShadows") == 0.0f);
    }

    private void UpdateMaterialSpecularSource(Material material)
--- a/com.unity.render-pipelines.lightweight/LWRP/LightweightPipeline.cs
+++ b/com.unity.render-pipelines.lightweight/LWRP/LightweightPipeline.cs
                supportedLightmapsModes = LightmapsMode.CombinedDirectional | LightmapsMode.NonDirectional,
                rendererSupportsLightProbeProxyVolumes = false,
                rendererSupportsMotionVectors = false,
-                rendererSupportsReceiveShadows = true,
+                rendererSupportsReceiveShadows = false,
                rendererSupportsReflectionProbes = true
            };
            SceneViewDrawMode.SetupDrawMode();
--- a/com.unity.render-pipelines.lightweight/LWRP/ShaderLibrary/LightweightPassLit.hlsl
+++ b/com.unity.render-pipelines.lightweight/LWRP/ShaderLibrary/LightweightPassLit.hlsl
 #endif

    inputData.viewDirectionWS = FragmentViewDirWS(viewDir);
-#ifdef _SHADOWS_ENABLED
+#if defined(_SHADOWS_ENABLED) && !defined(_RECEIVE_SHADOWS_OFF)
    inputData.shadowCoord = IN.shadowCoord;
 #else
    inputData.shadowCoord = float4(0, 0, 0, 0);
    half fogFactor = ComputeFogFactor(o.clipPos.z);
    o.fogFactorAndVertexLight = half4(fogFactor, vertexLight);

-#ifdef _SHADOWS_ENABLED
+#if defined(_SHADOWS_ENABLED) && !defined(_RECEIVE_SHADOWS_OFF)
 #if SHADOWS_SCREEN
    o.shadowCoord = ComputeShadowCoord(o.clipPos);
 #else
--- a/com.unity.render-pipelines.lightweight/LWRP/ShaderLibrary/LightweightPassLitSimple.hlsl
+++ b/com.unity.render-pipelines.lightweight/LWRP/ShaderLibrary/LightweightPassLitSimple.hlsl
 #endif

    inputData.viewDirectionWS = FragmentViewDirWS(viewDir);
-#ifdef _SHADOWS_ENABLED
+#if defined(_SHADOWS_ENABLED) && !defined(_RECEIVE_SHADOWS_OFF)
    inputData.shadowCoord = IN.shadowCoord;
 #else
    inputData.shadowCoord = float4(0, 0, 0, 0);
    half fogFactor = ComputeFogFactor(o.clipPos.z);
    o.fogFactorAndVertexLight = half4(fogFactor, vertexLight);

-#ifdef _SHADOWS_ENABLED
+#if defined(_SHADOWS_ENABLED) && !defined(_RECEIVE_SHADOWS_OFF)
 #if SHADOWS_SCREEN
    o.shadowCoord = ComputeShadowCoord(o.clipPos);
 #else
--- a/com.unity.render-pipelines.lightweight/LWRP/ShaderLibrary/Shadows.hlsl
+++ b/com.unity.render-pipelines.lightweight/LWRP/ShaderLibrary/Shadows.hlsl

 half MainLightRealtimeShadowAttenuation(float4 shadowCoord)
 {
-#if !defined(_SHADOWS_ENABLED)
+#if !defined(_SHADOWS_ENABLED) || defined(_RECEIVE_SHADOWS_OFF)
    return 1.0h;
 #endif


 half LocalLightRealtimeShadowAttenuation(int lightIndex, float3 positionWS)
 {
-#if !defined(_LOCAL_SHADOWS_ENABLED)
+#if !defined(_LOCAL_SHADOWS_ENABLED) || defined(_RECEIVE_SHADOWS_OFF)
    return 1.0h;
 #else
    float4 shadowCoord = mul(_LocalWorldToShadowAtlas[lightIndex], float4(positionWS, 1.0));
--- a/com.unity.render-pipelines.lightweight/LWRP/Shaders/LightweightStandard.shader
+++ b/com.unity.render-pipelines.lightweight/LWRP/Shaders/LightweightStandard.shader
        [HideInInspector] _DstBlend("__dst", Float) = 0.0
        [HideInInspector] _ZWrite("__zw", Float) = 1.0
        [HideInInspector] _Cull("__cull", Float) = 2.0
+
+        _ReceiveShadows("Receive Shadows", Float) = 1.0
    }

    SubShader
            #pragma shader_feature _SPECULARHIGHLIGHTS_OFF
            #pragma shader_feature _GLOSSYREFLECTIONS_OFF
            #pragma shader_feature _SPECULAR_SETUP
+            #pragma shader_feature _RECEIVE_SHADOWS_OFF

            // -------------------------------------
            // Lightweight Pipeline keywords
--- a/com.unity.render-pipelines.lightweight/LWRP/Shaders/LightweightStandardSimpleLighting.shader
+++ b/com.unity.render-pipelines.lightweight/LWRP/Shaders/LightweightStandardSimpleLighting.shader
        [HideInInspector] _DstBlend("__dst", Float) = 0.0
        [HideInInspector] _ZWrite("__zw", Float) = 1.0
        [HideInInspector] _Cull("__cull", Float) = 2.0
+
+        [ToogleOff] _ReceiveShadows("Receive Shadows", Float) = 1.0
    }

    SubShader
            #pragma shader_feature _GLOSSINESS_FROM_BASE_ALPHA
            #pragma shader_feature _NORMALMAP
            #pragma shader_feature _EMISSION
+            #pragma shader_feature _RECEIVE_SHADOWS_OFF

            // -------------------------------------
            // Lightweight Pipeline keywords
--- a/com.unity.testing.srp.lightweight/Tests/ReferenceImages/Linear/OSXEditor/Metal/020_Lighting_BasicDirectional.png
+++ b/com.unity.testing.srp.lightweight/Tests/ReferenceImages/Linear/OSXEditor/Metal/020_Lighting_BasicDirectional.png
--- a/com.unity.testing.srp.lightweight/Tests/ReferenceImages/Linear/WindowsEditor/Direct3D11/020_Lighting_BasicDirectional.png
+++ b/com.unity.testing.srp.lightweight/Tests/ReferenceImages/Linear/WindowsEditor/Direct3D11/020_Lighting_BasicDirectional.png
--- a/com.unity.testing.srp.lightweight/Tests/Scenes/020_Lighting_BasicDirectional.unity
+++ b/com.unity.testing.srp.lightweight/Tests/Scenes/020_Lighting_BasicDirectional.unity
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