24 lines
514 B
GLSL
24 lines
514 B
GLSL
R"(#version 330
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layout(triangles) in;
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layout(triangle_strip, max_vertices=3) out;
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out vec3 normal;
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out vec4 pos;
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void main( void )
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{
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vec3 a = ( gl_in[1].gl_Position - gl_in[0].gl_Position ).xyz;
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vec3 b = ( gl_in[2].gl_Position - gl_in[0].gl_Position ).xyz;
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vec3 N = normalize( cross( b, a ) );
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for( int i=0; i<gl_in.length( ); ++i )
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{
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gl_Position = gl_in[i].gl_Position;
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normal = N;
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pos = gl_in[i].gl_Position;
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EmitVertex( );
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}
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EndPrimitive( );
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})"; |