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Add shaders re-implemented in HLSL

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These were written against the shaders at revision eddd724e7.
There have been changes made since then, which will need to be mirrored.

See `data/hlsl/README.md` for the current status of each sample.
This commit is contained in:
Ben Clayton 2020-05-21 10:20:19 +00:00
parent 10a1ecaf7b
commit cce75f1859
287 changed files with 11263 additions and 0 deletions
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48
data/hlsl/vulkanscene/mesh.frag Normal file
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// Copyright 2020 Google LLC
Texture2D tex : register(t1);
SamplerState samp : register(s1);
struct VSOutput
{
[[vk::location(0)]] float2 UV : TEXCOORD0;
[[vk::location(1)]] float3 Normal : NORMAL0;
[[vk::location(2)]] float3 Color : COLOR0;
[[vk::location(3)]] float3 EyePos : POSITION0;
[[vk::location(4)]] float3 LightVec : TEXCOORD2;
};
float specpart(float3 L, float3 N, float3 H)
{
if (dot(N, L) > 0.0)
{
return pow(clamp(dot(H, N), 0.0, 1.0), 64.0);
}
return 0.0;
}
float4 main(VSOutput input) : SV_TARGET
{
float3 Eye = normalize(-input.EyePos);
float3 Reflected = normalize(reflect(-input.LightVec, input.Normal));
float3 halfVec = normalize(input.LightVec + input.EyePos);
float diff = clamp(dot(input.LightVec, input.Normal), 0.0, 1.0);
float spec = specpart(input.LightVec, input.Normal, halfVec);
float intensity = 0.1 + diff + spec;
float4 IAmbient = float4(0.2, 0.2, 0.2, 1.0);
float4 IDiffuse = float4(0.5, 0.5, 0.5, 0.5) * max(dot(input.Normal, input.LightVec), 0.0);
float shininess = 0.75;
float4 ISpecular = float4(0.5, 0.5, 0.5, 1.0) * pow(max(dot(Reflected, Eye), 0.0), 2.0) * shininess;
float4 outFragColor = float4((IAmbient + IDiffuse) * float4(input.Color, 1.0) + ISpecular);
// Some manual saturation
if (intensity > 0.95)
outFragColor *= 2.25;
if (intensity < 0.15)
outFragColor = float4(0.1, 0.1, 0.1, 0.1);
return outFragColor;
}