您最多选择25个主题
主题必须以中文或者字母或数字开头，可以包含连字符 (-)，并且长度不得超过35个字符
106 行
3.5 KiB
106 行
3.5 KiB
Shader "Hidden/LightweightPipeline/ScreenSpaceShadows"
|
|
{
|
|
SubShader
|
|
{
|
|
Tags{ "RenderPipeline" = "LightweightPipeline" "IgnoreProjector" = "True"}
|
|
|
|
HLSLINCLUDE
|
|
|
|
#pragma prefer_hlslcc gles
|
|
#pragma exclude_renderers d3d11_9x
|
|
//Keep compiler quiet about Shadows.hlsl.
|
|
#include "CoreRP/ShaderLibrary/Common.hlsl"
|
|
#include "CoreRP/ShaderLibrary/EntityLighting.hlsl"
|
|
#include "CoreRP/ShaderLibrary/ImageBasedLighting.hlsl"
|
|
#include "LWRP/ShaderLibrary/Core.hlsl"
|
|
#include "LWRP/ShaderLibrary/Shadows.hlsl"
|
|
|
|
#if defined(UNITY_STEREO_INSTANCING_ENABLED) || defined(UNITY_STEREO_MULTIVIEW_ENABLED)
|
|
TEXTURE2D_ARRAY(_CameraDepthTexture);
|
|
#else
|
|
TEXTURE2D(_CameraDepthTexture);
|
|
#endif // defined(UNITY_STEREO_INSTANCING_ENABLED) || defined(UNITY_STEREO_MULTIVIEW_ENABLED)
|
|
|
|
SAMPLER(sampler_CameraDepthTexture);
|
|
|
|
struct VertexInput
|
|
{
|
|
float4 vertex : POSITION;
|
|
float2 texcoord : TEXCOORD0;
|
|
UNITY_VERTEX_INPUT_INSTANCE_ID
|
|
};
|
|
|
|
struct Interpolators
|
|
{
|
|
half4 pos : SV_POSITION;
|
|
half4 texcoord : TEXCOORD0;
|
|
UNITY_VERTEX_INPUT_INSTANCE_ID
|
|
UNITY_VERTEX_OUTPUT_STEREO
|
|
};
|
|
|
|
Interpolators Vertex(VertexInput i)
|
|
{
|
|
Interpolators o;
|
|
UNITY_SETUP_INSTANCE_ID(i);
|
|
UNITY_TRANSFER_INSTANCE_ID(i, o);
|
|
UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(o);
|
|
|
|
o.pos = TransformObjectToHClip(i.vertex.xyz);
|
|
|
|
float4 projPos = o.pos * 0.5;
|
|
projPos.xy = projPos.xy + projPos.w;
|
|
|
|
o.texcoord.xy = UnityStereoTransformScreenSpaceTex(i.texcoord);
|
|
o.texcoord.zw = projPos.xy;
|
|
|
|
return o;
|
|
}
|
|
|
|
half4 Fragment(Interpolators i) : SV_Target
|
|
{
|
|
UNITY_SETUP_INSTANCE_ID(i);
|
|
#if !defined(UNITY_STEREO_INSTANCING_ENABLED)
|
|
// Completely unclear why i.stereoTargetEyeIndex doesn't work here, considering
|
|
// this has to be correct in order for the texture array slices to be rasterized to
|
|
// We can limit this workaround to stereo instancing for now.
|
|
UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX(i);
|
|
#endif
|
|
|
|
#if defined(UNITY_STEREO_INSTANCING_ENABLED) || defined(UNITY_STEREO_MULTIVIEW_ENABLED)
|
|
float deviceDepth = SAMPLE_TEXTURE2D_ARRAY(_CameraDepthTexture, sampler_CameraDepthTexture, i.texcoord.xy, unity_StereoEyeIndex).r;
|
|
#else
|
|
float deviceDepth = SAMPLE_DEPTH_TEXTURE(_CameraDepthTexture, sampler_CameraDepthTexture, i.texcoord.xy);
|
|
#endif
|
|
|
|
#if UNITY_REVERSED_Z
|
|
deviceDepth = 1 - deviceDepth;
|
|
#endif
|
|
deviceDepth = 2 * deviceDepth - 1; //NOTE: Currently must massage depth before computing CS position.
|
|
|
|
float3 vpos = ComputeViewSpacePosition(i.texcoord.zw, deviceDepth, unity_CameraInvProjection);
|
|
float3 wpos = mul(unity_CameraToWorld, float4(vpos, 1)).xyz;
|
|
|
|
//Fetch shadow coordinates for cascade.
|
|
float4 coords = TransformWorldToShadowCoord(wpos);
|
|
|
|
return SampleShadowmap(coords);
|
|
}
|
|
|
|
ENDHLSL
|
|
|
|
Pass
|
|
{
|
|
ZTest Always
|
|
ZWrite Off
|
|
Cull Off
|
|
|
|
HLSLPROGRAM
|
|
#pragma multi_compile _ _SHADOWS_SOFT
|
|
#pragma multi_compile _ _SHADOWS_CASCADE
|
|
|
|
#pragma vertex Vertex
|
|
#pragma fragment Fragment
|
|
ENDHLSL
|
|
}
|
|
}
|
|
}
|