88 lines
3.9 KiB
HLSL
88 lines
3.9 KiB
HLSL
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float4 frag (
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#if defined(Geometry)
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g2f i
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#else
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VertexOutput i
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#endif
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, uint facing : SV_IsFrontFace
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) : SV_Target
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{
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TextureUV t = (TextureUV)0; // Populate UVs
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if(_TilingMode != 1) { InitializeTextureUVs(i, t); } else { InitializeTextureUVsMerged(i, t); };
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#ifdef UNITY_PASS_SHADOWCASTER
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XSLighting o = (XSLighting)0; //Populate Lighting Struct, but only with important shadowcaster stuff!
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o.albedo = UNITY_SAMPLE_TEX2D(_MainTex, t.albedoUV) * _Color * lerp(1, float4(i.color.rgb, 1), _VertexColorAlbedo);
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o.clipMap = UNITY_SAMPLE_TEX2D_SAMPLER(_ClipMap, _MainTex, t.clipMapUV);
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o.dissolveMask = UNITY_SAMPLE_TEX2D_SAMPLER(_DissolveTexture, _MainTex, t.dissolveUV);
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o.worldPos = i.worldPos;
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o.screenUV = calcScreenUVs(i.screenPos);
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o.screenPos = i.screenPos;
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o.objPos = i.objPos;
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float4 outCol = 0;
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calcAlpha(o);
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calcDissolve(o, outCol);
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SHADOW_CASTER_FRAGMENT(i);
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#else
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UNITY_LIGHT_ATTENUATION(attenuation, i, i.worldPos.xyz);
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// fix for rare bug where light atten is 0 when there is no directional light in the scene
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#ifdef UNITY_PASS_FORWARDBASE
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if(all(_LightColor0.rgb == 0.0))
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{
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attenuation = 1.0;
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}
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#endif
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#if defined(DIRECTIONAL)
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half sharp = _ShadowSharpness * 0.5;
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attenuation = smoothstep(sharp, 1-sharp, attenuation); //Converge at the center line
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#endif
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bool face = facing > 0; // True if on front face, False if on back face
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if (!face) // Invert Normals based on face
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{
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if(i.color.a > 0.99) { discard; }//Discard outlines front face always. This way cull off and outlines can be enabled.
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i.ntb[0] = -i.ntb[0];
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i.ntb[1] = -i.ntb[1];
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i.ntb[2] = -i.ntb[2];
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}
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XSLighting o = (XSLighting)0; //Populate Lighting Struct
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o.albedo = UNITY_SAMPLE_TEX2D(_MainTex, t.albedoUV) * _Color * lerp(1, float4(i.color.rgb, 1), _VertexColorAlbedo);
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o.specularMap = UNITY_SAMPLE_TEX2D_SAMPLER(_SpecularMap, _MainTex, t.specularMapUV);
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o.metallicGlossMap = UNITY_SAMPLE_TEX2D_SAMPLER(_MetallicGlossMap, _MainTex, t.metallicGlossMapUV);
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o.detailMask = UNITY_SAMPLE_TEX2D_SAMPLER(_DetailMask, _MainTex, t.detailMaskUV);
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o.normalMap = UNITY_SAMPLE_TEX2D_SAMPLER(_BumpMap, _MainTex, t.normalMapUV);
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o.detailNormal = UNITY_SAMPLE_TEX2D_SAMPLER(_DetailNormalMap, _MainTex, t.detailNormalUV);
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o.thickness = UNITY_SAMPLE_TEX2D_SAMPLER(_ThicknessMap, _MainTex, t.thicknessMapUV);
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o.occlusion = tex2D(_OcclusionMap, t.occlusionUV);
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o.reflectivityMask = UNITY_SAMPLE_TEX2D_SAMPLER(_ReflectivityMask, _MainTex, t.reflectivityMaskUV) * _Reflectivity;
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o.emissionMap = UNITY_SAMPLE_TEX2D_SAMPLER(_EmissionMap, _MainTex, t.emissionMapUV) * _EmissionColor;
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o.rampMask = UNITY_SAMPLE_TEX2D_SAMPLER(_RampSelectionMask, _MainTex, i.uv); // This texture doesn't need to ever be on a second uv channel, and doesn't need tiling, convince me otherwise.
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o.hsvMask = UNITY_SAMPLE_TEX2D_SAMPLER(_HSVMask, _MainTex, t.albedoUV);
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o.clipMap = UNITY_SAMPLE_TEX2D_SAMPLER(_ClipMap, _MainTex, t.clipMapUV);
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o.dissolveMask = UNITY_SAMPLE_TEX2D_SAMPLER(_DissolveTexture, _MainTex, t.dissolveUV);
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o.diffuseColor = o.albedo.rgb; //Store this to separate the texture color and diffuse color for later.
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o.attenuation = attenuation;
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o.normal = i.ntb[0];
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o.tangent = i.ntb[1];
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o.bitangent = i.ntb[2];
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o.worldPos = i.worldPos;
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o.color = i.color.rgb;
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o.isOutline = i.color.a;
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o.screenUV = calcScreenUVs(i.screenPos);
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o.screenPos = i.screenPos;
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o.objPos = i.objPos;
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float4 col = BRDF_XSLighting(o);
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calcAlpha(o);
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calcDissolve(o, col);
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UNITY_APPLY_FOG(i.fogCoord, col);
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return float4(col.rgb, o.alpha);
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#endif
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}
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