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VARYING vec2 uv1;
void MAIN()
{
vec2 size = vec2(textureSize(tex, 0));
vec2 pix = vec2(1.0 / size.x, 1.0 / size.y);
vec4 c = texture(tex, uv1);
if (c.a == 0.0)
c = texture(tex, uv1 - vec2(0.0, pix.y));
if (c.a == 0.0)
c = texture(tex, uv1 + vec2(0.0, pix.y));
if (c.a == 0.0)
c = texture(tex, uv1 - vec2(pix.x, 0.0));
if (c.a == 0.0)
c = texture(tex, uv1 + vec2(pix.x, 0.0));
if (c.a == 0.0)
c = texture(tex, uv1 - pix);
if (c.a == 0.0)
c = texture(tex, uv1 + pix);
if (c.a == 0.0)
c = texture(tex, uv1 + vec2(pix.x, -pix.y));
if (c.a == 0.0)
c = texture(tex, uv1 + vec2(-pix.x, pix.y));
FRAGCOLOR = c;
}