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39 lines
776 B
GLSL
39 lines
776 B
GLSL
// by guest(r) - guest.r@gmail.com
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// license: GNU-GPL
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#ifdef GL_ES
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precision mediump float;
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precision mediump int;
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#endif
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attribute vec4 a_position;
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attribute vec2 a_texcoord0;
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uniform vec2 u_texelDelta;
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varying vec4 v_texcoord0;
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varying vec4 v_texcoord1;
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varying vec4 v_texcoord2;
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varying vec4 v_texcoord3;
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varying vec4 v_texcoord4;
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varying vec4 v_texcoord5;
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varying vec4 v_texcoord6;
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float scaleoffset = 0.8;
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void main()
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{
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float x = u_texelDelta.x*scaleoffset;
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float y = u_texelDelta.y*scaleoffset;
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gl_Position = a_position;
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v_texcoord0 = a_texcoord0.xyxy;
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v_texcoord1 = v_texcoord0;
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v_texcoord2 = v_texcoord0;
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v_texcoord4 = v_texcoord0;
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v_texcoord5 = v_texcoord0;
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v_texcoord1.y-=y;
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v_texcoord2.y+=y;
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v_texcoord4.x-=x;
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v_texcoord5.x+=x;
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}
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