23 lines
361 B
Text
23 lines
361 B
Text
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#ifdef GL_ES
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precision mediump float;
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#endif
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attribute vec2 a_position;
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uniform vec4 u_viewbox; // [x, y, width, height]
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uniform vec2 u_resolution;
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varying vec2 v_pos;
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void main() {
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vec2 uv = ( a_position.xy + 1.0 ) * 0.5;
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uv *= u_viewbox.zw;
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uv += u_viewbox.xy;
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v_pos = uv.xy;
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gl_Position = vec4(a_position.xy, 0.0, 1.0);
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}
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