luboslenco
26 lines
715 B
GLSL
26 lines
715 B
GLSL
#version 450
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layout(triangles) in;
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layout(triangle_strip) out;
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layout(max_vertices=3) out;
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in vec3 voxpositionGeom[];
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out vec3 voxposition;
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void main() {
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vec3 p1 = voxpositionGeom[1] - voxpositionGeom[0];
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vec3 p2 = voxpositionGeom[2] - voxpositionGeom[0];
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vec3 p = abs(cross(p1, p2));
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for (uint i = 0; i < 3; ++i) {
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voxposition = voxpositionGeom[i];
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if (p.z > p.x && p.z > p.y) {
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gl_Position = vec4(voxposition.x, voxposition.y, 0.0, 1.0);
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}
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else if (p.x > p.y && p.x > p.z) {
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gl_Position = vec4(voxposition.y, voxposition.z, 0.0, 1.0);
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}
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else {
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gl_Position = vec4(voxposition.x, voxposition.z, 0.0, 1.0);
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}
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EmitVertex();
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}
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EndPrimitive();
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}
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