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scummvm-cursorfix/engines/hpl1/engine/impl/shaders/hpl1_Bump_Light.fragment
2026-02-02 04:50:13 +01:00

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// Copyright 2006-2010 (C) - Frictional Games
//
// This file is part of HPL1 Engine
//
// For conditions of distribution and use, see copyright notice in LICENSE-shaders
//
///////////////////////////////////////////////////////
/// DIFFUSE LIGHTING FRAGMENT PROGRAM /////////////////
///////////////////////////////////////////////////////
in vec4 vLightColor;
in vec2 vUv;
in vec3 vLightDir;
OUTPUT
uniform sampler2D tex0; //diffuseMap
uniform sampler2D tex1; //normalMap
uniform samplerCube tex2; //normalCubeMap
uniform sampler1D tex3; //falloffMap
void main()
{
float attenuation = texture1D(tex3,dot(vLightDir,vLightDir)).x;
vec4 bumpVec = (2.0*texture(tex1, vUv)-vec4(1.0));
vec4 lightVec = (2.0*textureCube(tex2,vLightDir)-vec4(1.0));
outColor.xyz = texture(tex0, vUv).xyz * vLightColor.xyz * attenuation * dot(lightVec.xyz,bumpVec.xyz);
outColor.w = 0;
}