36 lines
1.1 KiB
Scala
36 lines
1.1 KiB
Scala
$input v_texcoord0
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/*
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* Copyright 2018 Eric Arnebäck. All rights reserved.
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* License: https://github.com/bkaradzic/bgfx#license-bsd-2-clause
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*/
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#include "../common/common.sh"
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SAMPLER2D(s_tex, 0);
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uniform vec4 u_pixelSize;
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uniform vec4 u_intensity;
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void main()
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{
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vec2 halfpixel = u_pixelSize.xy;
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vec2 uv = v_texcoord0.xy;
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vec4 sum = vec4_splat(0.0);
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sum += (2.0 / 16.0) * texture2D(s_tex, uv + vec2(-halfpixel.x, 0.0) );
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sum += (2.0 / 16.0) * texture2D(s_tex, uv + vec2( 0.0, halfpixel.y) );
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sum += (2.0 / 16.0) * texture2D(s_tex, uv + vec2( halfpixel.x, 0.0) );
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sum += (2.0 / 16.0) * texture2D(s_tex, uv + vec2( 0.0, -halfpixel.y) );
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sum += (1.0 / 16.0) * texture2D(s_tex, uv + vec2(-halfpixel.x, -halfpixel.y) );
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sum += (1.0 / 16.0) * texture2D(s_tex, uv + vec2(-halfpixel.x, halfpixel.y) );
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sum += (1.0 / 16.0) * texture2D(s_tex, uv + vec2( halfpixel.x, -halfpixel.y) );
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sum += (1.0 / 16.0) * texture2D(s_tex, uv + vec2( halfpixel.x, halfpixel.y) );
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sum += (4.0 / 16.0) * texture2D(s_tex, uv);
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gl_FragColor = u_intensity.x * sum;
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}
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