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https://github.com/EsotericSoftware/spine-runtimes.git
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75 lines
2.4 KiB
HLSL
75 lines
2.4 KiB
HLSL
#ifndef SPRITES_DEPTH_NORMALS_PASS_URP_INCLUDED
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#define SPRITES_DEPTH_NORMALS_PASS_URP_INCLUDED
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#include "Packages/com.unity.render-pipelines.core/ShaderLibrary/CommonMaterial.hlsl"
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#include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl"
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struct AttributesSpine
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{
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float4 positionOS : POSITION;
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float3 normalOS : NORMAL;
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float4 vertexColor : COLOR;
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float2 texcoord : TEXCOORD0;
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UNITY_VERTEX_INPUT_INSTANCE_ID
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};
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struct VaryingsSpine
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{
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float3 normalWS : NORMAL;
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float4 positionCS : SV_POSITION;
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float4 texcoordAndAlpha: TEXCOORD0;
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UNITY_VERTEX_OUTPUT_STEREO
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};
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VaryingsSpine DepthNormalsVertex(AttributesSpine input)
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{
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VaryingsSpine output = (VaryingsSpine)0;
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UNITY_SETUP_INSTANCE_ID(input);
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UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(output);
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half3 fixedNormal = half3(0, 0, -1);
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half3 normalWS = normalize(mul((float3x3)unity_ObjectToWorld, fixedNormal));
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#ifdef _DOUBLE_SIDED_LIGHTING
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// unfortunately we have to compute the sign here in the vertex shader
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// instead of using VFACE in fragment shader stage.
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half3 viewDirWS = UNITY_MATRIX_V[2].xyz;
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half faceSign = sign(dot(viewDirWS, normalWS));
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normalWS *= faceSign;
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#endif
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output.normalWS = normalWS;
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output.texcoordAndAlpha.xyz = float3(TRANSFORM_TEX(input.texcoord, _MainTex).xy, 0);
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output.texcoordAndAlpha.a = input.vertexColor.a;
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output.positionCS = TransformObjectToHClip(input.positionOS.xyz);
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return output;
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}
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void DepthNormalsFragment(VaryingsSpine input,
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out half4 outNormalWS : SV_Target0
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#ifdef _WRITE_RENDERING_LAYERS
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, out float4 outRenderingLayers : SV_Target1
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#endif
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)
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{
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fixed4 texureColor = tex2D(_MainTex, input.texcoordAndAlpha.xy);
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clip(texureColor.a * input.texcoordAndAlpha.a - _Cutoff);
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float3 normalWS = input.normalWS;
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#if defined(_GBUFFER_NORMALS_OCT)
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float2 octNormalWS = PackNormalOctQuadEncode(normalWS); // values between [-1, +1], must use fp32 on some platforms.
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float2 remappedOctNormalWS = saturate(octNormalWS * 0.5 + 0.5); // values between [ 0, 1]
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half3 packedNormalWS = PackFloat2To888(remappedOctNormalWS); // values between [ 0, 1]
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outNormalWS = half4(packedNormalWS, 0.0);
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#else
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outNormalWS = half4(normalWS, 0.0);
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#endif
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#ifdef USE_WRITE_RENDERING_LAYERS
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uint renderingLayers = GetMeshRenderingLayerBackwardsCompatible();
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outRenderingLayers = float4(EncodeMeshRenderingLayer(renderingLayers), 0, 0, 0);
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#endif
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}
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#endif
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