| John Kessenich | 39374da | 2015-05-15 21:32:46 +0000 | [diff] [blame] | 1 | #version 420 core
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| 2 |
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| 3 | layout(triangles) in;
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| 4 |
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| 5 | in gl_PerVertex {
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| 6 | float gl_PointSize;
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| 7 | } gl_in[];
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| 8 |
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| 9 | out gl_PerVertex {
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| 10 | float gl_PointSize;
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| 11 | };
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| 12 |
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| 13 | layout(line_strip) out;
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| 14 | layout(max_vertices = 127) out;
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| 15 | layout(invocations = 4) in;
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| 16 |
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| 17 | uniform sampler2D s2D;
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| 18 | in vec2 coord[];
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| John Kessenich | 6c292d3 | 2016-02-15 20:58:50 -0700 | [diff] [blame] | 19 |
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| 20 | int i;
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| John Kessenich | 39374da | 2015-05-15 21:32:46 +0000 | [diff] [blame] | 21 |
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| 22 | void main()
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| 23 | {
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| 24 | float p = gl_in[1].gl_PointSize;
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| 25 | gl_PointSize = p;
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| 26 | gl_ViewportIndex = 7;
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| 27 |
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| 28 | EmitStreamVertex(1);
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| 29 | EndStreamPrimitive(0);
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| 30 | EmitVertex();
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| 31 | EndPrimitive();
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| 32 | int id = gl_InvocationID;
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| 33 |
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| 34 | const ivec2 offsets[5] =
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| 35 | {
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| 36 | ivec2(0,1),
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| 37 | ivec2(1,-2),
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| 38 | ivec2(0,3),
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| 39 | ivec2(-3,0),
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| 40 | ivec2(2,1)
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| 41 | };
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| 42 | vec4 v = textureGatherOffset(s2D, coord[0], offsets[i].xy);
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| 43 | }
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