497 lines
20 KiB
HLSL
497 lines
20 KiB
HLSL
#ifndef UNIVERSAL_SHADOWS_INCLUDED
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#define UNIVERSAL_SHADOWS_INCLUDED
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#include "Packages/com.unity.render-pipelines.core/ShaderLibrary/Common.hlsl"
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#include "Packages/com.unity.render-pipelines.core/ShaderLibrary/Shadow/ShadowSamplingTent.hlsl"
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#include "Core.hlsl"
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#define MAX_SHADOW_CASCADES 4
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#if !defined(_RECEIVE_SHADOWS_OFF)
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#if defined(_MAIN_LIGHT_SHADOWS) || defined(_MAIN_LIGHT_SHADOWS_CASCADE) || defined(_MAIN_LIGHT_SHADOWS_SCREEN)
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#define MAIN_LIGHT_CALCULATE_SHADOWS
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#if defined(_MAIN_LIGHT_SHADOWS) || (defined(_MAIN_LIGHT_SHADOWS_SCREEN) && !defined(_SURFACE_TYPE_TRANSPARENT))
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#define REQUIRES_VERTEX_SHADOW_COORD_INTERPOLATOR
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#endif
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#endif
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#if defined(_ADDITIONAL_LIGHT_SHADOWS)
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#define ADDITIONAL_LIGHT_CALCULATE_SHADOWS
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#endif
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#endif
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#if defined(UNITY_DOTS_INSTANCING_ENABLED)
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#define SHADOWMASK_NAME unity_ShadowMasks
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#define SHADOWMASK_SAMPLER_NAME samplerunity_ShadowMasks
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#define SHADOWMASK_SAMPLE_EXTRA_ARGS , unity_LightmapIndex.x
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#else
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#define SHADOWMASK_NAME unity_ShadowMask
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#define SHADOWMASK_SAMPLER_NAME samplerunity_ShadowMask
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#define SHADOWMASK_SAMPLE_EXTRA_ARGS
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#endif
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#if defined(SHADOWS_SHADOWMASK) && defined(LIGHTMAP_ON)
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#define SAMPLE_SHADOWMASK(uv) SAMPLE_TEXTURE2D_LIGHTMAP(SHADOWMASK_NAME, SHADOWMASK_SAMPLER_NAME, uv SHADOWMASK_SAMPLE_EXTRA_ARGS);
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#elif !defined (LIGHTMAP_ON)
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#define SAMPLE_SHADOWMASK(uv) unity_ProbesOcclusion;
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#else
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#define SAMPLE_SHADOWMASK(uv) half4(1, 1, 1, 1);
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#endif
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#define REQUIRES_WORLD_SPACE_POS_INTERPOLATOR
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#if defined(LIGHTMAP_ON) || defined(LIGHTMAP_SHADOW_MIXING) || defined(SHADOWS_SHADOWMASK)
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#define CALCULATE_BAKED_SHADOWS
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#endif
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SCREENSPACE_TEXTURE(_ScreenSpaceShadowmapTexture);
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SAMPLER(sampler_ScreenSpaceShadowmapTexture);
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TEXTURE2D_SHADOW(_MainLightShadowmapTexture);
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SAMPLER_CMP(sampler_MainLightShadowmapTexture);
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TEXTURE2D_SHADOW(_AdditionalLightsShadowmapTexture);
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SAMPLER_CMP(sampler_AdditionalLightsShadowmapTexture);
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// GLES3 causes a performance regression in some devices when using CBUFFER.
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#ifndef SHADER_API_GLES3
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CBUFFER_START(MainLightShadows)
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#endif
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// Last cascade is initialized with a no-op matrix. It always transforms
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// shadow coord to half3(0, 0, NEAR_PLANE). We use this trick to avoid
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// branching since ComputeCascadeIndex can return cascade index = MAX_SHADOW_CASCADES
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float4x4 _MainLightWorldToShadow[MAX_SHADOW_CASCADES + 1];
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float4 _CascadeShadowSplitSpheres0;
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float4 _CascadeShadowSplitSpheres1;
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float4 _CascadeShadowSplitSpheres2;
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float4 _CascadeShadowSplitSpheres3;
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float4 _CascadeShadowSplitSphereRadii;
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half4 _MainLightShadowOffset0;
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half4 _MainLightShadowOffset1;
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half4 _MainLightShadowOffset2;
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half4 _MainLightShadowOffset3;
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half4 _MainLightShadowParams; // (x: shadowStrength, y: 1.0 if soft shadows, 0.0 otherwise, z: main light fade scale, w: main light fade bias)
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float4 _MainLightShadowmapSize; // (xy: 1/width and 1/height, zw: width and height)
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#ifndef SHADER_API_GLES3
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CBUFFER_END
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#endif
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#if USE_STRUCTURED_BUFFER_FOR_LIGHT_DATA
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StructuredBuffer<float4> _AdditionalShadowParams_SSBO; // Per-light data - TODO: test if splitting _AdditionalShadowParams_SSBO[lightIndex].w into a separate StructuredBuffer<int> buffer is faster
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StructuredBuffer<float4x4> _AdditionalLightsWorldToShadow_SSBO; // Per-shadow-slice-data - A shadow casting light can have 6 shadow slices (if it's a point light)
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half4 _AdditionalShadowOffset0;
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half4 _AdditionalShadowOffset1;
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half4 _AdditionalShadowOffset2;
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half4 _AdditionalShadowOffset3;
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half4 _AdditionalShadowFadeParams; // x: additional light fade scale, y: additional light fade bias, z: 0.0, w: 0.0)
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float4 _AdditionalShadowmapSize; // (xy: 1/width and 1/height, zw: width and height)
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#else
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#if defined(SHADER_API_MOBILE) || (defined(SHADER_API_GLCORE) && !defined(SHADER_API_SWITCH)) || defined(SHADER_API_GLES) || defined(SHADER_API_GLES3) // Workaround because SHADER_API_GLCORE is also defined when SHADER_API_SWITCH is
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// Point lights can use 6 shadow slices, but on some mobile GPUs performance decrease drastically with uniform blocks bigger than 8kb. This number ensures size of buffer AdditionalLightShadows stays reasonable.
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// It also avoids shader compilation errors on SHADER_API_GLES30 devices where max number of uniforms per shader GL_MAX_FRAGMENT_UNIFORM_VECTORS is low (224)
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// Keep in sync with MAX_PUNCTUAL_LIGHT_SHADOW_SLICES_IN_UBO in AdditionalLightsShadowCasterPass.cs
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#define MAX_PUNCTUAL_LIGHT_SHADOW_SLICES_IN_UBO (MAX_VISIBLE_LIGHTS)
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#else
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// Point lights can use 6 shadow slices, but on some platforms max uniform block size is 64kb. This number ensures size of buffer AdditionalLightShadows does not exceed this 64kb limit.
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// Keep in sync with MAX_PUNCTUAL_LIGHT_SHADOW_SLICES_IN_UBO in AdditionalLightsShadowCasterPass.cs
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#define MAX_PUNCTUAL_LIGHT_SHADOW_SLICES_IN_UBO 545
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#endif
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// GLES3 causes a performance regression in some devices when using CBUFFER.
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#ifndef SHADER_API_GLES3
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CBUFFER_START(AdditionalLightShadows)
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#endif
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half4 _AdditionalShadowParams[MAX_VISIBLE_LIGHTS]; // Per-light data
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float4x4 _AdditionalLightsWorldToShadow[MAX_PUNCTUAL_LIGHT_SHADOW_SLICES_IN_UBO]; // Per-shadow-slice-data
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half4 _AdditionalShadowOffset0;
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half4 _AdditionalShadowOffset1;
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half4 _AdditionalShadowOffset2;
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half4 _AdditionalShadowOffset3;
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half4 _AdditionalShadowFadeParams; // x: additional light fade scale, y: additional light fade bias, z: 0.0, w: 0.0)
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float4 _AdditionalShadowmapSize; // (xy: 1/width and 1/height, zw: width and height)
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#ifndef SHADER_API_GLES3
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CBUFFER_END
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#endif
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#endif
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float4 _ShadowBias; // x: depth bias, y: normal bias
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#define BEYOND_SHADOW_FAR(shadowCoord) shadowCoord.z <= 0.0 || shadowCoord.z >= 1.0
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struct ShadowSamplingData
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{
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half4 shadowOffset0;
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half4 shadowOffset1;
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half4 shadowOffset2;
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half4 shadowOffset3;
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float4 shadowmapSize;
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};
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ShadowSamplingData GetMainLightShadowSamplingData()
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{
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ShadowSamplingData shadowSamplingData;
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// shadowOffsets are used in SampleShadowmapFiltered #if defined(SHADER_API_MOBILE) || defined(SHADER_API_SWITCH)
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shadowSamplingData.shadowOffset0 = _MainLightShadowOffset0;
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shadowSamplingData.shadowOffset1 = _MainLightShadowOffset1;
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shadowSamplingData.shadowOffset2 = _MainLightShadowOffset2;
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shadowSamplingData.shadowOffset3 = _MainLightShadowOffset3;
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// shadowmapSize is used in SampleShadowmapFiltered for other platforms
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shadowSamplingData.shadowmapSize = _MainLightShadowmapSize;
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return shadowSamplingData;
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}
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ShadowSamplingData GetAdditionalLightShadowSamplingData()
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{
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ShadowSamplingData shadowSamplingData;
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// shadowOffsets are used in SampleShadowmapFiltered #if defined(SHADER_API_MOBILE) || defined(SHADER_API_SWITCH)
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shadowSamplingData.shadowOffset0 = _AdditionalShadowOffset0;
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shadowSamplingData.shadowOffset1 = _AdditionalShadowOffset1;
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shadowSamplingData.shadowOffset2 = _AdditionalShadowOffset2;
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shadowSamplingData.shadowOffset3 = _AdditionalShadowOffset3;
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// shadowmapSize is used in SampleShadowmapFiltered for other platforms
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shadowSamplingData.shadowmapSize = _AdditionalShadowmapSize;
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return shadowSamplingData;
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}
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// ShadowParams
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// x: ShadowStrength
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// y: 1.0 if shadow is soft, 0.0 otherwise
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half4 GetMainLightShadowParams()
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{
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return _MainLightShadowParams;
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}
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// ShadowParams
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// x: ShadowStrength
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// y: 1.0 if shadow is soft, 0.0 otherwise
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// z: 1.0 if cast by a point light (6 shadow slices), 0.0 if cast by a spot light (1 shadow slice)
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// w: first shadow slice index for this light, there can be 6 in case of point lights. (-1 for non-shadow-casting-lights)
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half4 GetAdditionalLightShadowParams(int lightIndex)
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{
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#if USE_STRUCTURED_BUFFER_FOR_LIGHT_DATA
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return _AdditionalShadowParams_SSBO[lightIndex];
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#else
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return _AdditionalShadowParams[lightIndex];
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#endif
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}
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half SampleScreenSpaceShadowmap(float4 shadowCoord)
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{
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shadowCoord.xy /= shadowCoord.w;
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// The stereo transform has to happen after the manual perspective divide
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shadowCoord.xy = UnityStereoTransformScreenSpaceTex(shadowCoord.xy);
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#if defined(UNITY_STEREO_INSTANCING_ENABLED) || defined(UNITY_STEREO_MULTIVIEW_ENABLED)
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half attenuation = SAMPLE_TEXTURE2D_ARRAY(_ScreenSpaceShadowmapTexture, sampler_ScreenSpaceShadowmapTexture, shadowCoord.xy, unity_StereoEyeIndex).x;
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#else
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half attenuation = half(SAMPLE_TEXTURE2D(_ScreenSpaceShadowmapTexture, sampler_ScreenSpaceShadowmapTexture, shadowCoord.xy).x);
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#endif
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return attenuation;
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}
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real SampleShadowmapFiltered(TEXTURE2D_SHADOW_PARAM(ShadowMap, sampler_ShadowMap), float4 shadowCoord, ShadowSamplingData samplingData)
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{
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real attenuation;
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#if defined(SHADER_API_MOBILE) || defined(SHADER_API_SWITCH)
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// 4-tap hardware comparison
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real4 attenuation4;
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attenuation4.x = real(SAMPLE_TEXTURE2D_SHADOW(ShadowMap, sampler_ShadowMap, shadowCoord.xyz + samplingData.shadowOffset0.xyz));
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attenuation4.y = real(SAMPLE_TEXTURE2D_SHADOW(ShadowMap, sampler_ShadowMap, shadowCoord.xyz + samplingData.shadowOffset1.xyz));
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attenuation4.z = real(SAMPLE_TEXTURE2D_SHADOW(ShadowMap, sampler_ShadowMap, shadowCoord.xyz + samplingData.shadowOffset2.xyz));
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attenuation4.w = real(SAMPLE_TEXTURE2D_SHADOW(ShadowMap, sampler_ShadowMap, shadowCoord.xyz + samplingData.shadowOffset3.xyz));
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attenuation = dot(attenuation4, real(0.25));
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#else
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float fetchesWeights[9];
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float2 fetchesUV[9];
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SampleShadow_ComputeSamples_Tent_5x5(samplingData.shadowmapSize, shadowCoord.xy, fetchesWeights, fetchesUV);
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attenuation = fetchesWeights[0] * SAMPLE_TEXTURE2D_SHADOW(ShadowMap, sampler_ShadowMap, float3(fetchesUV[0].xy, shadowCoord.z));
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attenuation += fetchesWeights[1] * SAMPLE_TEXTURE2D_SHADOW(ShadowMap, sampler_ShadowMap, float3(fetchesUV[1].xy, shadowCoord.z));
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attenuation += fetchesWeights[2] * SAMPLE_TEXTURE2D_SHADOW(ShadowMap, sampler_ShadowMap, float3(fetchesUV[2].xy, shadowCoord.z));
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attenuation += fetchesWeights[3] * SAMPLE_TEXTURE2D_SHADOW(ShadowMap, sampler_ShadowMap, float3(fetchesUV[3].xy, shadowCoord.z));
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attenuation += fetchesWeights[4] * SAMPLE_TEXTURE2D_SHADOW(ShadowMap, sampler_ShadowMap, float3(fetchesUV[4].xy, shadowCoord.z));
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attenuation += fetchesWeights[5] * SAMPLE_TEXTURE2D_SHADOW(ShadowMap, sampler_ShadowMap, float3(fetchesUV[5].xy, shadowCoord.z));
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attenuation += fetchesWeights[6] * SAMPLE_TEXTURE2D_SHADOW(ShadowMap, sampler_ShadowMap, float3(fetchesUV[6].xy, shadowCoord.z));
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attenuation += fetchesWeights[7] * SAMPLE_TEXTURE2D_SHADOW(ShadowMap, sampler_ShadowMap, float3(fetchesUV[7].xy, shadowCoord.z));
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attenuation += fetchesWeights[8] * SAMPLE_TEXTURE2D_SHADOW(ShadowMap, sampler_ShadowMap, float3(fetchesUV[8].xy, shadowCoord.z));
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#endif
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return attenuation;
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}
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real SampleShadowmap(TEXTURE2D_SHADOW_PARAM(ShadowMap, sampler_ShadowMap), float4 shadowCoord, ShadowSamplingData samplingData, half4 shadowParams, bool isPerspectiveProjection = true)
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{
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// Compiler will optimize this branch away as long as isPerspectiveProjection is known at compile time
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if (isPerspectiveProjection)
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shadowCoord.xyz /= shadowCoord.w;
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real attenuation;
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real shadowStrength = shadowParams.x;
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#ifdef _SHADOWS_SOFT
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if(shadowParams.y != 0)
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{
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attenuation = SampleShadowmapFiltered(TEXTURE2D_SHADOW_ARGS(ShadowMap, sampler_ShadowMap), shadowCoord, samplingData);
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}
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else
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#endif
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{
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// 1-tap hardware comparison
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attenuation = real(SAMPLE_TEXTURE2D_SHADOW(ShadowMap, sampler_ShadowMap, shadowCoord.xyz));
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}
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attenuation = LerpWhiteTo(attenuation, shadowStrength);
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// Shadow coords that fall out of the light frustum volume must always return attenuation 1.0
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// TODO: We could use branch here to save some perf on some platforms.
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return BEYOND_SHADOW_FAR(shadowCoord) ? 1.0 : attenuation;
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}
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half ComputeCascadeIndex(float3 positionWS)
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{
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float3 fromCenter0 = positionWS - _CascadeShadowSplitSpheres0.xyz;
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float3 fromCenter1 = positionWS - _CascadeShadowSplitSpheres1.xyz;
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float3 fromCenter2 = positionWS - _CascadeShadowSplitSpheres2.xyz;
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float3 fromCenter3 = positionWS - _CascadeShadowSplitSpheres3.xyz;
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float4 distances2 = float4(dot(fromCenter0, fromCenter0), dot(fromCenter1, fromCenter1), dot(fromCenter2, fromCenter2), dot(fromCenter3, fromCenter3));
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half4 weights = half4(distances2 < _CascadeShadowSplitSphereRadii);
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weights.yzw = saturate(weights.yzw - weights.xyz);
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return half(4.0) - dot(weights, half4(4, 3, 2, 1));
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}
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float4 TransformWorldToShadowCoord(float3 positionWS)
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{
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#ifdef _MAIN_LIGHT_SHADOWS_CASCADE
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half cascadeIndex = ComputeCascadeIndex(positionWS);
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#else
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half cascadeIndex = half(0.0);
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#endif
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float4 shadowCoord = mul(_MainLightWorldToShadow[cascadeIndex], float4(positionWS, 1.0));
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return float4(shadowCoord.xyz, 0);
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}
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half MainLightRealtimeShadow(float4 shadowCoord)
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{
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#if !defined(MAIN_LIGHT_CALCULATE_SHADOWS)
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return half(1.0);
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#elif defined(_MAIN_LIGHT_SHADOWS_SCREEN) && !defined(_SURFACE_TYPE_TRANSPARENT)
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return SampleScreenSpaceShadowmap(shadowCoord);
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#else
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ShadowSamplingData shadowSamplingData = GetMainLightShadowSamplingData();
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half4 shadowParams = GetMainLightShadowParams();
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return SampleShadowmap(TEXTURE2D_ARGS(_MainLightShadowmapTexture, sampler_MainLightShadowmapTexture), shadowCoord, shadowSamplingData, shadowParams, false);
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#endif
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}
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// returns 0.0 if position is in light's shadow
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// returns 1.0 if position is in light
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half AdditionalLightRealtimeShadow(int lightIndex, float3 positionWS, half3 lightDirection)
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{
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#if !defined(ADDITIONAL_LIGHT_CALCULATE_SHADOWS)
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return half(1.0);
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#endif
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ShadowSamplingData shadowSamplingData = GetAdditionalLightShadowSamplingData();
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half4 shadowParams = GetAdditionalLightShadowParams(lightIndex);
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int shadowSliceIndex = shadowParams.w;
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if (shadowSliceIndex < 0)
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return 1.0;
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half isPointLight = shadowParams.z;
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UNITY_BRANCH
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if (isPointLight)
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{
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// This is a point light, we have to find out which shadow slice to sample from
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float cubemapFaceId = CubeMapFaceID(-lightDirection);
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shadowSliceIndex += cubemapFaceId;
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}
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#if USE_STRUCTURED_BUFFER_FOR_LIGHT_DATA
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float4 shadowCoord = mul(_AdditionalLightsWorldToShadow_SSBO[shadowSliceIndex], float4(positionWS, 1.0));
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#else
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float4 shadowCoord = mul(_AdditionalLightsWorldToShadow[shadowSliceIndex], float4(positionWS, 1.0));
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#endif
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return SampleShadowmap(TEXTURE2D_ARGS(_AdditionalLightsShadowmapTexture, sampler_AdditionalLightsShadowmapTexture), shadowCoord, shadowSamplingData, shadowParams, true);
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}
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half GetMainLightShadowFade(float3 positionWS)
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{
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float3 camToPixel = positionWS - _WorldSpaceCameraPos;
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float distanceCamToPixel2 = dot(camToPixel, camToPixel);
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float fade = saturate(distanceCamToPixel2 * float(_MainLightShadowParams.z) + float(_MainLightShadowParams.w));
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return half(fade);
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}
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half GetAdditionalLightShadowFade(float3 positionWS)
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{
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float3 camToPixel = positionWS - _WorldSpaceCameraPos;
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float distanceCamToPixel2 = dot(camToPixel, camToPixel);
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float fade = saturate(distanceCamToPixel2 * float(_AdditionalShadowFadeParams.x) + float(_AdditionalShadowFadeParams.y));
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return half(fade);
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}
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half MixRealtimeAndBakedShadows(half realtimeShadow, half bakedShadow, half shadowFade)
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{
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#if defined(LIGHTMAP_SHADOW_MIXING)
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return min(lerp(realtimeShadow, 1, shadowFade), bakedShadow);
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#else
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return lerp(realtimeShadow, bakedShadow, shadowFade);
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#endif
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}
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half BakedShadow(half4 shadowMask, half4 occlusionProbeChannels)
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{
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// Here occlusionProbeChannels used as mask selector to select shadows in shadowMask
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// If occlusionProbeChannels all components are zero we use default baked shadow value 1.0
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// This code is optimized for mobile platforms:
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// half bakedShadow = any(occlusionProbeChannels) ? dot(shadowMask, occlusionProbeChannels) : 1.0h;
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half bakedShadow = half(1.0) + dot(shadowMask - half(1.0), occlusionProbeChannels);
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return bakedShadow;
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}
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half MainLightShadow(float4 shadowCoord, float3 positionWS, half4 shadowMask, half4 occlusionProbeChannels)
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{
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half realtimeShadow = MainLightRealtimeShadow(shadowCoord);
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#ifdef CALCULATE_BAKED_SHADOWS
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half bakedShadow = BakedShadow(shadowMask, occlusionProbeChannels);
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#else
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half bakedShadow = half(1.0);
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#endif
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#ifdef MAIN_LIGHT_CALCULATE_SHADOWS
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half shadowFade = GetMainLightShadowFade(positionWS);
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#else
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half shadowFade = half(1.0);
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#endif
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return MixRealtimeAndBakedShadows(realtimeShadow, bakedShadow, shadowFade);
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}
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half AdditionalLightShadow(int lightIndex, float3 positionWS, half3 lightDirection, half4 shadowMask, half4 occlusionProbeChannels)
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{
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half realtimeShadow = AdditionalLightRealtimeShadow(lightIndex, positionWS, lightDirection);
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#ifdef CALCULATE_BAKED_SHADOWS
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half bakedShadow = BakedShadow(shadowMask, occlusionProbeChannels);
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#else
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half bakedShadow = half(1.0);
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#endif
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#ifdef ADDITIONAL_LIGHT_CALCULATE_SHADOWS
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half shadowFade = GetAdditionalLightShadowFade(positionWS);
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#else
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half shadowFade = half(1.0);
|
|
#endif
|
|
|
|
return MixRealtimeAndBakedShadows(realtimeShadow, bakedShadow, shadowFade);
|
|
}
|
|
|
|
float4 GetShadowCoord(VertexPositionInputs vertexInput)
|
|
{
|
|
#if defined(_MAIN_LIGHT_SHADOWS_SCREEN) && !defined(_SURFACE_TYPE_TRANSPARENT)
|
|
return ComputeScreenPos(vertexInput.positionCS);
|
|
#else
|
|
return TransformWorldToShadowCoord(vertexInput.positionWS);
|
|
#endif
|
|
}
|
|
|
|
float3 ApplyShadowBias(float3 positionWS, float3 normalWS, float3 lightDirection)
|
|
{
|
|
float invNdotL = 1.0 - saturate(dot(lightDirection, normalWS));
|
|
float scale = invNdotL * _ShadowBias.y;
|
|
|
|
// normal bias is negative since we want to apply an inset normal offset
|
|
positionWS = lightDirection * _ShadowBias.xxx + positionWS;
|
|
positionWS = normalWS * scale.xxx + positionWS;
|
|
return positionWS;
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
// Deprecated /
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
// Renamed -> _MainLightShadowParams
|
|
#define _MainLightShadowData _MainLightShadowParams
|
|
|
|
// Deprecated: Use GetMainLightShadowFade or GetAdditionalLightShadowFade instead.
|
|
float GetShadowFade(float3 positionWS)
|
|
{
|
|
float3 camToPixel = positionWS - _WorldSpaceCameraPos;
|
|
float distanceCamToPixel2 = dot(camToPixel, camToPixel);
|
|
|
|
float fade = saturate(distanceCamToPixel2 * float(_MainLightShadowParams.z) + float(_MainLightShadowParams.w));
|
|
return fade * fade;
|
|
}
|
|
|
|
// Deprecated: Use GetShadowFade instead.
|
|
float ApplyShadowFade(float shadowAttenuation, float3 positionWS)
|
|
{
|
|
float fade = GetShadowFade(positionWS);
|
|
return shadowAttenuation + (1 - shadowAttenuation) * fade * fade;
|
|
}
|
|
|
|
// Deprecated: Use GetMainLightShadowParams instead.
|
|
half GetMainLightShadowStrength()
|
|
{
|
|
return _MainLightShadowData.x;
|
|
}
|
|
|
|
// Deprecated: Use GetAdditionalLightShadowParams instead.
|
|
half GetAdditionalLightShadowStrenth(int lightIndex)
|
|
{
|
|
#if USE_STRUCTURED_BUFFER_FOR_LIGHT_DATA
|
|
return _AdditionalShadowParams_SSBO[lightIndex].x;
|
|
#else
|
|
return _AdditionalShadowParams[lightIndex].x;
|
|
#endif
|
|
}
|
|
|
|
// Deprecated: Use SampleShadowmap that takes shadowParams instead of strength.
|
|
real SampleShadowmap(float4 shadowCoord, TEXTURE2D_SHADOW_PARAM(ShadowMap, sampler_ShadowMap), ShadowSamplingData samplingData, half shadowStrength, bool isPerspectiveProjection = true)
|
|
{
|
|
half4 shadowParams = half4(shadowStrength, 1.0, 0.0, 0.0);
|
|
return SampleShadowmap(TEXTURE2D_SHADOW_ARGS(ShadowMap, sampler_ShadowMap), shadowCoord, samplingData, shadowParams, isPerspectiveProjection);
|
|
}
|
|
|
|
// Deprecated: Use AdditionalLightRealtimeShadow(int lightIndex, float3 positionWS, half3 lightDirection) in Shadows.hlsl instead, as it supports Point Light shadows
|
|
half AdditionalLightRealtimeShadow(int lightIndex, float3 positionWS)
|
|
{
|
|
return AdditionalLightRealtimeShadow(lightIndex, positionWS, half3(1, 0, 0));
|
|
}
|
|
|
|
#endif
|