urho3d/bin/CoreData/Shaders/GLSL/Skybox.glsl

#include "Uniforms.glsl"
#include "Samplers.glsl"
#include "Transform.glsl"

varying vec3 vTexCoord;

void VS()
{
#ifdef IGNORENODETRANSFORM
    mat4 modelMatrix = transpose(mat4(
        vec4(1.0, 0.0, 0.0, 0.0),
        vec4(0.0, 1.0, 0.0, 0.0),
        vec4(0.0, 0.0, 1.0, 0.0),
        transpose(cViewInv)[3]));
#else
    mat4 modelMatrix = iModelMatrix;
#endif
    vec3 worldPos = GetWorldPos(modelMatrix);
    gl_Position = GetClipPos(worldPos);
    gl_Position.z = gl_Position.w;
    vTexCoord = iPos.xyz;
}

void PS()
{
    vec4 sky = cMatDiffColor * textureCube(sDiffCubeMap, vTexCoord);
    #ifdef HDRSCALE
        sky = pow(sky + clamp((cAmbientColor.a - 1.0) * 0.1, 0.0, 0.25), max(vec4(cAmbientColor.a), 1.0)) * clamp(cAmbientColor.a, 0.0, 1.0);
    #endif
    gl_FragColor = sky;
}