mirror of
https://github.com/scratchfoundation/bgfx.git
synced 2024-12-04 21:31:11 -05:00
49 lines
1,017 B
Text
49 lines
1,017 B
Text
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struct v2f_vertex_lit {
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vec2 uv;
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vec4 diff;
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vec4 spec;
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};
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struct v2f_img {
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vec4 pos;
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vec2 uv;
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};
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struct appdata_img {
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vec4 vertex;
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vec2 texcoord;
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};
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struct v2f {
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vec4 pos;
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vec2 uv[3];
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};
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uniform sampler2D _MainTex;
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uniform float _Treshold;
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vec4 frag( in v2f i );
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vec4 frag( in v2f i ) {
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vec4 original;
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vec3 p1;
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vec3 p2;
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vec3 p3;
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vec3 diff;
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float len;
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original = texture2D( _MainTex, i.uv[ 0 ]);
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p1 = original.xyz ;
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p2 = texture2D( _MainTex, i.uv[ 1 ]).xyz ;
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p3 = texture2D( _MainTex, i.uv[ 2 ]).xyz ;
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diff = (((p1 * 2.00000) - p2) - p3);
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len = dot( diff, diff);
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if ( (len >= _Treshold) ){
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original.xyz = vec3( 0.000000);
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}
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return original;
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}
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void main() {
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vec4 xl_retval;
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v2f xlt_i;
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xlt_i.pos = vec4(0.0);
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xlt_i.uv[0] = vec2( gl_TexCoord[0]);
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xlt_i.uv[1] = vec2( gl_TexCoord[1]);
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xlt_i.uv[2] = vec2( gl_TexCoord[2]);
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xl_retval = frag( xlt_i);
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gl_FragData[0] = vec4( xl_retval);
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}
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