drewcassidy/KSP-Conformal-Decals
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Code Issues Releases Wiki Activity

Enable multi-pass forward rendering

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This commit is contained in:
Andrew Cassidy 2020-05-24 11:41:09 -07:00
parent 03b647560e
commit bd83729e5a
2 changed files with 95 additions and 26 deletions
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51
Assets/Shaders/DecalFeatureBumped.shader
View File

@ -22,8 +22,8 @@ Shader "ConformalDecals/Feature/Bumped"
Blend SrcAlpha OneMinusSrcAlpha
CGPROGRAM
#pragma vertex vert_forward_base
#pragma fragment frag_forward_base
#pragma vertex vert_forward
#pragma fragment frag_forward
#pragma multi_compile_fwdbase nolightmap nodirlightmap nodynlightmap
@ -62,6 +62,53 @@ Shader "ConformalDecals/Feature/Bumped"
ENDCG
}
Pass
{
Name "FORWARD"
Tags { "LightMode" = "ForwardAdd" }
Blend One One
CGPROGRAM
#pragma vertex vert_forward
#pragma fragment frag_forward
#pragma multi_compile_fwdadd nolightmap nodirlightmap nodynlightmap
#include "UnityCG.cginc"
#include "Lighting.cginc"
#include "AutoLight.cginc"
#include "LightingKSP.cginc"
#include "DecalsCommon.cginc"
sampler2D _Decal;
sampler2D _DecalBumpMap;
float _Cutoff;
float _Opacity;
void surf (DecalSurfaceInput IN, inout SurfaceOutput o)
{
fixed4 projUV = UNITY_PROJ_COORD(IN.uv_decal);
// since I cant easily affect the clamping mode in KSP, do it here
clip(projUV.xyz);
clip(1-projUV.xyz);
// clip backsides
clip(dot(_DecalNormal, IN.normal));
float4 color = tex2D(_Decal, projUV);
float3 normal = UnpackNormal(tex2D(_DecalBumpMap, projUV));
//clip(color.a - _Cutoff);
o.Normal = normal;
o.Albedo = color.rgb;
o.Alpha = color.a * _Opacity;
}
ENDCG
}
// shadow casting support
UsePass "Legacy Shaders/VertexLit/SHADOWCASTER"
}

70
Assets/Shaders/DecalsCommon.cginc
View File

@ -25,14 +25,25 @@ struct v2f
UNITY_POSITION(pos);
float3 normal : NORMAL;
float4 uv_decal : TEXCOORD0;
#ifdef DECAL_BASE_NORMAL
float2 uv_base : TEXCOORD1;
#endif //DECAL_BASE_NORMAL
float4 tSpace0 : TEXCOORD2;
float4 tSpace1 : TEXCOORD3;
float4 tSpace2 : TEXCOORD4;
fixed3 vlight : TEXCOORD5;
UNITY_SHADOW_COORDS(6)
#ifdef UNITY_PASS_FORWARDBASE
fixed3 vlight : TEXCOORD5;
UNITY_SHADOW_COORDS(6)
#endif //UNITY_PASS_FORWARDBASE
#ifdef UNITY_PASS_FORWARDADD
UNITY_LIGHTING_COORDS(5,6)
#endif
};
// Projection matrix, normal, and tangent vectors
@ -44,7 +55,7 @@ float3 _DecalTangent;
// this must be defined in any shader using this cginc
void surf (DecalSurfaceInput IN, inout SurfaceOutput o);
v2f vert_forward_base(appdata_decal v)
v2f vert_forward(appdata_decal v)
{
v2f o;
UNITY_INITIALIZE_OUTPUT(v2f,o);
@ -59,7 +70,6 @@ v2f vert_forward_base(appdata_decal v)
float3 worldPos = mul(unity_ObjectToWorld, v.vertex).xyz;
float3 worldNormal = UnityObjectToWorldNormal(v.normal);
//fixed3 worldTangent = fixed3(0,0,0);//UnityObjectToWorldDir(v.tangent.xyz);
fixed3 worldTangent = UnityObjectToWorldDir(_DecalTangent);
fixed3 worldBinormal = cross(worldTangent, worldNormal);
worldTangent = cross(worldNormal, worldBinormal);
@ -67,28 +77,32 @@ v2f vert_forward_base(appdata_decal v)
o.tSpace1 = float4(worldTangent.y, worldBinormal.y, worldNormal.y, worldPos.y);
o.tSpace2 = float4(worldTangent.z, worldBinormal.z, worldNormal.z, worldPos.z);
// SH/ambient light
#if UNITY_SHOULD_SAMPLE_SH
float3 shlight = ShadeSH9 (float4(worldNormal,1.0));
o.vlight = shlight;
#else
o.vlight = 0.0;
#endif // UNITY_SHOULD_SAMPLE_SH
// forward base pass specific lighting code
#ifdef UNITY_PASS_FORWARDBASE
// SH/ambient light
#if UNITY_SHOULD_SAMPLE_SH
float3 shlight = ShadeSH9 (float4(worldNormal,1.0));
o.vlight = shlight;
#else
o.vlight = 0.0;
#endif // UNITY_SHOULD_SAMPLE_SH
// vertex light
#ifdef VERTEXLIGHT_ON
o.vlight += Shade4PointLights (
unity_4LightPosX0, unity_4LightPosY0, unity_4LightPosZ0,
unity_LightColor[0].rgb, unity_LightColor[1].rgb, unity_LightColor[2].rgb, unity_LightColor[3].rgb,
unity_4LightAtten0, worldPos, worldNormal );
#endif // VERTEXLIGHT_ON
// vertex light
#ifdef VERTEXLIGHT_ON
o.vlight += Shade4PointLights (
unity_4LightPosX0, unity_4LightPosY0, unity_4LightPosZ0,
unity_LightColor[0].rgb, unity_LightColor[1].rgb, unity_LightColor[2].rgb, unity_LightColor[3].rgb,
unity_4LightAtten0, worldPos, worldNormal );
#endif // VERTEXLIGHT_ON
#endif // UNITY_PASS_FORWARDBASE
UNITY_TRANSFER_LIGHTING(o, 0.0); // pass shadow and, possibly, light cookie coordinates to pixel shader
// pass shadow and, possibly, light cookie coordinates to pixel shader
UNITY_TRANSFER_LIGHTING(o, 0.0);
return o;
}
fixed4 frag_forward_base(v2f IN) : SV_Target
fixed4 frag_forward(v2f IN) : SV_Target
{
DecalSurfaceInput i;
SurfaceOutput o;
@ -98,7 +112,7 @@ fixed4 frag_forward_base(v2f IN) : SV_Target
float3 worldPos = float3(IN.tSpace0.w, IN.tSpace1.w, IN.tSpace2.w);
float3 worldTan = float3(IN.tSpace0.x, IN.tSpace1.x, IN.tSpace2.x);
#ifndef USING_DIRECTIONAL_LIGHT
fixed3 lightDir = normalize(UnityWorldSpaceLightDir(worldPos));
#else
@ -135,11 +149,19 @@ fixed4 frag_forward_base(v2f IN) : SV_Target
worldN = normalize(worldN);
o.Normal = worldN;
//KSP lighting function
c += LightingBlinnPhongSmooth(o, lightDir, viewDir, atten);
c.rgb += o.Emission;
c.rgb += o.Albedo * IN.vlight;
#ifdef UNITY_PASS_FORWARDBASE
c.rgb += o.Emission;
c.rgb += o.Albedo * IN.vlight;
#endif //UNITY_PASS_FORWARDBASE
#ifdef UNITY_PASS_FORWARDADD
c.rgb *= c.a;
c.a = 0.0;
#endif
return c;
}