Moved shaders to new directory
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61
shaders/hlsl/particlefire/normalmap.vert
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61
shaders/hlsl/particlefire/normalmap.vert
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// Copyright 2020 Google LLC
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struct VSInput
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{
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[[vk::location(0)]] float3 Pos : POSITION0;
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[[vk::location(1)]] float2 UV : TEXCOORD0;
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[[vk::location(2)]] float3 Normal : NORMAL0;
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[[vk::location(3)]] float4 Tangent : TEXCOORD1;
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};
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struct UBO
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{
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float4x4 projection;
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float4x4 model;
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float4x4 normal;
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float4 lightPos;
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};
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cbuffer ubo : register(b0) { UBO ubo; }
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struct VSOutput
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{
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float4 Pos : SV_POSITION;
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[[vk::location(0)]] float2 UV : TEXCOORD0;
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[[vk::location(1)]] float3 LightVec : TEXCOORD2;
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[[vk::location(2)]] float3 LightVecB : TEXCOORD3;
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[[vk::location(3)]] float3 LightDir : TEXCOORD4;
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[[vk::location(4)]] float3 ViewVec : TEXCOORD1;
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};
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VSOutput main(VSInput input)
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{
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VSOutput output = (VSOutput)0;
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float3 vertexPosition = mul(ubo.model, float4(input.Pos, 1.0)).xyz;
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output.LightDir = normalize(ubo.lightPos.xyz - vertexPosition);
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float3 biTangent = cross(input.Normal, input.Tangent.xyz);
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// Setup (t)angent-(b)inormal-(n)ormal matrix for converting
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// object coordinates into tangent space
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float3x3 tbnMatrix;
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tbnMatrix[0] = mul((float3x3)ubo.normal, input.Tangent);
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tbnMatrix[1] = mul((float3x3)ubo.normal, biTangent);
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tbnMatrix[2] = mul((float3x3)ubo.normal, input.Normal);
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output.LightVec.xyz = mul(float3(ubo.lightPos.xyz - vertexPosition), tbnMatrix);
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float3 lightDist = ubo.lightPos.xyz - input.Pos;
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output.LightVecB.x = dot(input.Tangent, lightDist);
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output.LightVecB.y = dot(biTangent, lightDist);
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output.LightVecB.z = dot(input.Normal, lightDist);
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output.ViewVec.x = dot(input.Tangent, input.Pos);
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output.ViewVec.y = dot(biTangent, input.Pos);
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output.ViewVec.z = dot(input.Normal, input.Pos);
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output.UV = input.UV;
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output.Pos = mul(ubo.projection, mul(ubo.model, float4(input.Pos, 1.0)));
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return output;
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}
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