19 lines
594 B
Plaintext
19 lines
594 B
Plaintext
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const vec3 clusterSlices = vec3(16, 16, 16);
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int getClusterI(vec2 tc, float viewz, vec2 cameraPlane) {
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int sliceZ = 0;
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float cnear = clusterNear + cameraPlane.x;
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if (viewz >= cnear) {
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float z = log(viewz - cnear + 1.0) / log(cameraPlane.y - cnear + 1.0);
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sliceZ = int(z * (clusterSlices.z - 1)) + 1;
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}
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// address gap between near plane and cluster near offset
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else if (viewz >= cameraPlane.x) {
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sliceZ = 1;
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}
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return int(tc.x * clusterSlices.x) +
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int(int(tc.y * clusterSlices.y) * clusterSlices.x) +
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int(sliceZ * clusterSlices.x * clusterSlices.y);
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}
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