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
48 行
1.1 KiB
48 行
1.1 KiB
#ifndef LIGHTWEIGHT_PASS_SHADOW_INCLUDED
|
|
#define LIGHTWEIGHT_PASS_SHADOW_INCLUDED
|
|
|
|
#include "LWRP/ShaderLibrary/Core.hlsl"
|
|
|
|
// x: global clip space bias, y: normal world space bias
|
|
float4 _ShadowBias;
|
|
float3 _LightDirection;
|
|
|
|
struct VertexInput
|
|
{
|
|
float4 position : POSITION;
|
|
float3 normal : NORMAL;
|
|
|
|
UNITY_VERTEX_INPUT_INSTANCE_ID
|
|
};
|
|
|
|
float4 ShadowPassVertex(VertexInput v) : SV_POSITION
|
|
{
|
|
UNITY_SETUP_INSTANCE_ID(v);
|
|
|
|
float3 positionWS = TransformObjectToWorld(v.position.xyz);
|
|
float3 normalWS = TransformObjectToWorldDir(v.normal);
|
|
|
|
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 = normalWS * scale.xxx + positionWS;
|
|
float4 clipPos = TransformWorldToHClip(positionWS);
|
|
|
|
// _ShadowBias.x sign depens on if platform has reversed z buffer
|
|
clipPos.z += _ShadowBias.x;
|
|
|
|
#if defined(UNITY_REVERSED_Z)
|
|
clipPos.z = min(clipPos.z, 1.0);
|
|
#else
|
|
clipPos.z = max(clipPos.z, 0.0);
|
|
#endif
|
|
return clipPos;
|
|
}
|
|
|
|
half4 ShadowPassFragment() : SV_TARGET
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
#endif
|