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attribute vec4 attr_Position;
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attribute vec4 attr_TexCoord0;
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varying vec2 var_ScreenTex;
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void main()
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{
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gl_Position = attr_Position;
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var_ScreenTex = attr_TexCoord0.xy;
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//vec2 screenCoords = gl_Position.xy / gl_Position.w;
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//var_ScreenTex = screenCoords * 0.5 + 0.5;
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}
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