Rasagar/Library/PackageCache/com.unity.render-pipelines.universal/Shaders/Utils/ScreenSpaceShadows.shader

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2024-08-26 13:07:20 -07:00
Shader "Hidden/Universal Render Pipeline/ScreenSpaceShadows"
{
SubShader
{
Tags{ "RenderPipeline" = "UniversalPipeline" "IgnoreProjector" = "True"}
HLSLINCLUDE
//Keep compiler quiet about Shadows.hlsl.
#include "Packages/com.unity.render-pipelines.core/ShaderLibrary/Common.hlsl"
#include "Packages/com.unity.render-pipelines.core/ShaderLibrary/EntityLighting.hlsl"
#include "Packages/com.unity.render-pipelines.core/ShaderLibrary/ImageBasedLighting.hlsl"
// Core.hlsl for XR dependencies
#include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl"
#include "Packages/com.unity.render-pipelines.core/Runtime/Utilities/Blit.hlsl"
#include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Shadows.hlsl"
#include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/DeclareDepthTexture.hlsl"
half4 Fragment(Varyings input) : SV_Target
{
UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX(input);
#if UNITY_REVERSED_Z
float deviceDepth = SAMPLE_TEXTURE2D_X(_CameraDepthTexture, sampler_PointClamp, input.texcoord.xy).r;
#else
float deviceDepth = SAMPLE_TEXTURE2D_X(_CameraDepthTexture, sampler_PointClamp, input.texcoord.xy).r;
deviceDepth = deviceDepth * 2.0 - 1.0;
#endif
//Fetch shadow coordinates for cascade.
float3 wpos = ComputeWorldSpacePosition(input.texcoord.xy, deviceDepth, unity_MatrixInvVP);
float4 coords = TransformWorldToShadowCoord(wpos);
// Screenspace shadowmap is only used for directional lights which use orthogonal projection.
half realtimeShadow = MainLightRealtimeShadow(coords);
return realtimeShadow;
}
ENDHLSL
Pass
{
Name "ScreenSpaceShadows"
ZTest Always
ZWrite Off
Cull Off
HLSLPROGRAM
#pragma multi_compile _MAIN_LIGHT_SHADOWS _MAIN_LIGHT_SHADOWS_CASCADE
#pragma multi_compile_fragment _ _SHADOWS_SOFT _SHADOWS_SOFT_LOW _SHADOWS_SOFT_MEDIUM _SHADOWS_SOFT_HIGH
#pragma vertex Vert
#pragma fragment Fragment
ENDHLSL
}
}
}