65 lines
1.7 KiB
Plaintext
65 lines
1.7 KiB
Plaintext
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#version 330
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layout(points) in;
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layout(triangle_strip, max_vertices = 72) out;
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in vec4 color[];
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out vec4 fragColor;
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uniform mat4 mtxMdl;
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uniform mat4 mtxCam;
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uniform vec4 pathColor;
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uniform bool isPickingMode;
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uniform float cubeScale;
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uniform float controlCubeScale;
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float cubeInstanceScale = cubeScale;
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vec4 pos;
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mat4 mtx = mtxCam*mtxMdl;
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vec4 points[8] = vec4[](
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vec4(-1.0,-1.0,-1.0, 0.0),
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vec4( 1.0,-1.0,-1.0, 0.0),
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vec4(-1.0, 1.0,-1.0, 0.0),
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vec4( 1.0, 1.0,-1.0, 0.0),
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vec4(-1.0,-1.0, 1.0, 0.0),
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vec4( 1.0,-1.0, 1.0, 0.0),
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vec4(-1.0, 1.0, 1.0, 0.0),
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vec4( 1.0, 1.0, 1.0, 0.0)
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);
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void face(int p1, int p2, int p3, int p4){
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gl_Position = mtx * (pos + points[p1]*cubeInstanceScale); EmitVertex();
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gl_Position = mtx * (pos + points[p2]*cubeInstanceScale); EmitVertex();
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gl_Position = mtx * (pos + points[p3]*cubeInstanceScale); EmitVertex();
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gl_Position = mtx * (pos + points[p4]*cubeInstanceScale); EmitVertex();
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EndPrimitive();
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}
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void faceInv(int p3, int p4, int p1, int p2){
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gl_Position = mtx * (pos + points[p1]*cubeInstanceScale); EmitVertex();
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gl_Position = mtx * (pos + points[p2]*cubeInstanceScale); EmitVertex();
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gl_Position = mtx * (pos + points[p3]*cubeInstanceScale); EmitVertex();
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gl_Position = mtx * (pos + points[p4]*cubeInstanceScale); EmitVertex();
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EndPrimitive();
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}
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void main(){
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//draw point
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if(isPickingMode)
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fragColor = color[0];
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else
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fragColor = pathColor*.125+color[0]*.125;
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pos = gl_in[0].gl_Position;
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faceInv(0,1,2,3);
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face(4,5,6,7);
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face(0,1,4,5);
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faceInv(2,3,6,7);
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faceInv(0,2,4,6);
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face(1,3,5,7);
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cubeInstanceScale = controlCubeScale;
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}
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