mirror of https://github.com/CGAL/cgal
43 lines
699 B
GLSL
43 lines
699 B
GLSL
#version 150
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in vec4 vertex;
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in vec4 colors;
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uniform mat4 mvp_matrix;
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uniform mat4 f_matrix;
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uniform bool is_clipbox_on;
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uniform mat4 clipbox1;
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uniform mat4 clipbox2;
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out VS_OUT
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{
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vec4 out_color;
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float dist[6];
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}vs_out;
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void compute_distances(void)
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{
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for(int i=0; i<3; ++i)
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{
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vs_out.dist[i]=
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clipbox1[i][0]*vertex.x+
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clipbox1[i][1]*vertex.y+
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clipbox1[i][2]*vertex.z +
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clipbox1[i][3];
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vs_out.dist[i+3]=
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clipbox2[i][0]*vertex.x+
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clipbox2[i][1]*vertex.y+
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clipbox2[i][2]*vertex.z +
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clipbox2[i][3];
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}
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}
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void main(void)
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{
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if(is_clipbox_on)
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compute_distances();
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gl_Position = mvp_matrix * f_matrix * vertex;
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vs_out.out_color = colors;
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}
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