52 lines
1.3 KiB
GLSL
52 lines
1.3 KiB
GLSL
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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)]] float3 Normal : NORMAL0;
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};
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[[vk::constant_id(0)]] const int type = 0;
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struct UBO {
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float4x4 projection;
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float4x4 modelview;
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float4x4 inverseModelview;
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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)]] float3 UVW : TEXCOORD0;
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[[vk::location(1)]] float3 WorldPos : POSITION0;
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[[vk::location(2)]] float3 Normal : NORMAL0;
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[[vk::location(3)]] float3 ViewVec : TEXCOORD1;
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[[vk::location(4)]] float3 LightVec : TEXCOORD2;
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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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output.UVW = input.Pos;
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switch(type) {
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case 0: // Skybox
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output.WorldPos = mul((float4x3)ubo.modelview, input.Pos).xyz;
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output.Pos = mul(ubo.projection, float4(output.WorldPos, 1.0));
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break;
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case 1: // Object
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output.WorldPos = mul(ubo.modelview, float4(input.Pos, 1.0)).xyz;
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output.Pos = mul(ubo.projection, mul(ubo.modelview, float4(input.Pos.xyz, 1.0)));
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break;
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}
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output.WorldPos = mul(ubo.modelview, float4(input.Pos, 1.0)).xyz;
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output.Normal = mul((float4x3)ubo.modelview, input.Normal).xyz;
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float3 lightPos = float3(0.0f, -5.0f, 5.0f);
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output.LightVec = lightPos.xyz - output.WorldPos.xyz;
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output.ViewVec = -output.WorldPos.xyz;
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return output;
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}
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