procedural-3d-engine/data/shaders/hlsl/particlefire/normalmap.frag
Ben Clayton ca884587a4 Move shaders into glsl and hlsl directories
Move `data/shaders` to `data/shaders/glsl`
Move `data/hlsl` to `data/shaders/hlsl`

Fix up shader paths in the cpp files to point to the new glsl location.

`data/shaders/hlsl/compile.py` still overwrites the glsl .spv files (for
now).

Issue: #723
2020-06-01 12:22:28 +01:00

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1.3 KiB
GLSL

// Copyright 2020 Google LLC
Texture2D textureColorMap : register(t1);
SamplerState samplerColorMap : register(s1);
Texture2D textureNormalHeightMap : register(t2);
SamplerState samplerNormalHeightMap : register(s2);
#define lightRadius 45.0
struct VSOutput
{
[[vk::location(0)]] float2 UV : TEXCOORD0;
[[vk::location(1)]] float3 LightVec : TEXCOORD2;
[[vk::location(2)]] float3 LightVecB : TEXCOORD3;
[[vk::location(3)]] float3 LightDir : TEXCOORD4;
[[vk::location(4)]] float3 ViewVec : TEXCOORD1;
};
float4 main(VSOutput input) : SV_TARGET
{
float3 specularColor = float3(0.85, 0.5, 0.0);
float invRadius = 1.0/lightRadius;
float ambient = 0.25;
float3 rgb, normal;
rgb = textureColorMap.Sample(samplerColorMap, input.UV).rgb;
normal = normalize((textureNormalHeightMap.Sample(samplerNormalHeightMap, input.UV).rgb - 0.5) * 2.0);
float distSqr = dot(input.LightVecB, input.LightVecB);
float3 lVec = input.LightVecB * rsqrt(distSqr);
float atten = max(clamp(1.0 - invRadius * sqrt(distSqr), 0.0, 1.0), ambient);
float diffuse = clamp(dot(lVec, normal), 0.0, 1.0);
float3 light = normalize(-input.LightVec);
float3 view = normalize(input.ViewVec);
float3 reflectDir = reflect(-light, normal);
float specular = pow(max(dot(view, reflectDir), 0.0), 4.0);
return float4((rgb * atten + (diffuse * rgb + 0.5 * specular * specularColor.rgb)) * atten, 1.0);
}