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Code Issues 154 Wiki Activity

Let the instances drawn from the GPU hide one another, in two phases

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Hirek
2026-10-17 21:50:23 +02:00
parent 918c056b83
commit 5a5c67aaaf
14 changed files with 367 additions and 129 deletions
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4
shaders/instance_cull_offsets.comp
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@@ -1,5 +1,6 @@
// turns the counts of instances of the entries, written by stage 0 of instance_cull.comp, into the first slots of the
// entries in the output (cursors, which stage 1 advances as it writes), and puts the total in the header.
// entries in the output (cursors, which stages 1 and 2 advance as they write, and the same first slots kept for
// instance_cull_commands.comp), and puts the total in the header.
// a single work group: each invocation sums a run of the entries, then the sums are scanned in shared memory
#include <common>
@@ -46,6 +47,7 @@ void main()
for (uint entry = begin; entry < end; ++entry)
{
counters[INSTANCE_COUNTER_HEADER + entries + entry] = offset;
counters[INSTANCE_COUNTER_HEADER + 2u * entries + entry] = offset;
offset += counters[INSTANCE_COUNTER_HEADER + entry];
}
if (invocation == INSTANCE_OFFSETS_GROUP_SIZE - 1u)