136 lines
3.1 KiB
Plaintext
136 lines
3.1 KiB
Plaintext
Shader "Hidden/Internal-DeferredShading" {
|
|
Properties {
|
|
_LightTexture0 ("", any) = "" {}
|
|
_LightTextureB0 ("", 2D) = "" {}
|
|
_ShadowMapTexture ("", any) = "" {}
|
|
_SrcBlend ("", Float) = 1
|
|
_DstBlend ("", Float) = 1
|
|
}
|
|
SubShader {
|
|
|
|
// Pass 1: Lighting pass
|
|
// LDR case - Lighting encoded into a subtractive ARGB8 buffer
|
|
// HDR case - Lighting additively blended into floating point buffer
|
|
Pass {
|
|
ZWrite Off
|
|
Blend [_SrcBlend] [_DstBlend]
|
|
|
|
CGPROGRAM
|
|
#pragma target 3.0
|
|
#pragma vertex vert_deferred
|
|
#pragma fragment frag
|
|
#pragma multi_compile_lightpass
|
|
#pragma multi_compile ___ UNITY_HDR_ON
|
|
|
|
#pragma exclude_renderers nomrt
|
|
|
|
#include "UnityCG.cginc"
|
|
#include "UnityDeferredLibrary.cginc"
|
|
#include "UnityPBSLighting.cginc"
|
|
#include "UnityStandardUtils.cginc"
|
|
#include "UnityStandardBRDF.cginc"
|
|
|
|
sampler2D _CameraGBufferTexture0;
|
|
sampler2D _CameraGBufferTexture1;
|
|
sampler2D _CameraGBufferTexture2;
|
|
|
|
half4 CalculateLight (unity_v2f_deferred i)
|
|
{
|
|
float3 wpos;
|
|
float2 uv;
|
|
float atten, fadeDist;
|
|
UnityLight light;
|
|
UNITY_INITIALIZE_OUTPUT(UnityLight, light);
|
|
UnityDeferredCalculateLightParams (i, wpos, uv, light.dir, atten, fadeDist);
|
|
|
|
half4 gbuffer0 = tex2D (_CameraGBufferTexture0, uv);
|
|
half4 gbuffer1 = tex2D (_CameraGBufferTexture1, uv);
|
|
half4 gbuffer2 = tex2D (_CameraGBufferTexture2, uv);
|
|
|
|
light.color = _LightColor.rgb * atten;
|
|
half3 baseColor = gbuffer0.rgb;
|
|
half3 specColor = gbuffer1.rgb;
|
|
half oneMinusRoughness = gbuffer1.a;
|
|
half3 normalWorld = gbuffer2.rgb * 2 - 1;
|
|
normalWorld = normalize(normalWorld);
|
|
float3 eyeVec = normalize(wpos-_WorldSpaceCameraPos);
|
|
half oneMinusReflectivity = 1 - SpecularStrength(specColor.rgb);
|
|
light.ndotl = LambertTerm (normalWorld, light.dir);
|
|
|
|
UnityIndirect ind;
|
|
UNITY_INITIALIZE_OUTPUT(UnityIndirect, ind);
|
|
ind.diffuse = 0;
|
|
ind.specular = 0;
|
|
|
|
half4 res = UNITY_BRDF_PBS (baseColor, specColor, oneMinusReflectivity, oneMinusRoughness, normalWorld, -eyeVec, light, ind);
|
|
|
|
return res;
|
|
}
|
|
|
|
#ifdef UNITY_HDR_ON
|
|
half4
|
|
#else
|
|
fixed4
|
|
#endif
|
|
frag (unity_v2f_deferred i) : SV_Target
|
|
{
|
|
half4 c = CalculateLight(i);
|
|
#ifdef UNITY_HDR_ON
|
|
return c;
|
|
#else
|
|
return exp2(-c);
|
|
#endif
|
|
}
|
|
|
|
ENDCG
|
|
}
|
|
|
|
|
|
// Pass 2: Final decode pass.
|
|
// Used only with HDR off, to decode the logarithmic buffer into the main RT
|
|
Pass {
|
|
ZTest Always Cull Off ZWrite Off
|
|
Stencil {
|
|
ref [_StencilNonBackground]
|
|
readmask [_StencilNonBackground]
|
|
// Normally just comp would be sufficient, but there's a bug and only front face stencil state is set (case 583207)
|
|
compback equal
|
|
compfront equal
|
|
}
|
|
|
|
CGPROGRAM
|
|
#pragma target 3.0
|
|
#pragma vertex vert
|
|
#pragma fragment frag
|
|
#pragma exclude_renderers nomrt
|
|
|
|
#include "UnityCG.cginc"
|
|
|
|
sampler2D _LightBuffer;
|
|
struct v2f {
|
|
float4 vertex : SV_POSITION;
|
|
float2 texcoord : TEXCOORD0;
|
|
};
|
|
|
|
v2f vert (float4 vertex : POSITION, float2 texcoord : TEXCOORD0)
|
|
{
|
|
v2f o;
|
|
o.vertex = UnityObjectToClipPos(vertex);
|
|
o.texcoord = texcoord.xy;
|
|
#ifdef UNITY_SINGLE_PASS_STEREO
|
|
o.texcoord = TransformStereoScreenSpaceTex(o.texcoord, 1.0f);
|
|
#endif
|
|
return o;
|
|
}
|
|
|
|
fixed4 frag (v2f i) : SV_Target
|
|
{
|
|
return -log2(tex2D(_LightBuffer, i.texcoord));
|
|
}
|
|
ENDCG
|
|
}
|
|
|
|
}
|
|
Fallback Off
|
|
}
|