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#ifdef USE_UBOS
layout(std140) uniform State
{
vec2 u_alphaRef;
vec4 u_fogData;
vec4 u_fogColor;
};
#else
uniform vec4 u_alphaRef;
uniform vec4 u_fogData;
uniform vec4 u_fogColor;
#endif
#define u_fogStart (u_fogData.x)
#define u_fogEnd (u_fogData.y)
#define u_fogRange (u_fogData.z)
#define u_fogDisable (u_fogData.w)
#ifndef GL2
out vec4 fragColor;
#endif
void DoAlphaTest(float a)
{
#ifndef NO_ALPHATEST
if(a < u_alphaRef.x || a >= u_alphaRef.y)
discard;
#endif
}
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