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flip input normals to treat backfaces like normal

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This commit is contained in:
ethan merchant 2024-11-10 05:31:31 -05:00
parent ffc9e3fecb
commit 9aeafa7ba0
1 changed files with 3 additions and 2 deletions
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5
Assets/backbox.hlsl
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@ -24,7 +24,8 @@ psIn vs(vsIn input, uint id : SV_InstanceID) {
float3 world = mul(float4(input.pos.xyz, 1), sk_inst[id].world).xyz;
o.pos = mul(float4(world, 1), sk_viewproj[o.view_id]);
float3 normal = normalize(mul(input.norm, (float3x3)sk_inst[id].world));
// flip input normals to treat backfaces like normal
float3 normal = normalize(mul(-input.norm, (float3x3)sk_inst[id].world));
float3 norm_shade = float3(0.5) + (normal * 0.5);
@ -34,7 +35,7 @@ psIn vs(vsIn input, uint id : SV_InstanceID) {
// rim lighting
float rim = 1.0 - saturate(dot(normalize(view_dir), normal));
o.color = float4(norm_shade * rim * rim * 0.2, 1);
o.color = float4(norm_shade * rim * rim * 0.0666, 1);
return o;
}