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Merge pull request #500 from Subv/long_queries
GPU: Partial implementation of long GPU queries.
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commit
ba117854f9
@ -156,16 +156,15 @@ void Maxwell3D::ProcessQueryGet() {
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// TODO(Subv): Support the other query units.
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ASSERT_MSG(regs.query.query_get.unit == Regs::QueryUnit::Crop,
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"Units other than CROP are unimplemented");
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ASSERT_MSG(regs.query.query_get.short_query,
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"Writing the entire query result structure is unimplemented");
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u32 value = Memory::Read32(*address);
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u32 result = 0;
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u64 result = 0;
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// TODO(Subv): Support the other query variables
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switch (regs.query.query_get.select) {
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case Regs::QuerySelect::Zero:
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result = 0;
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// This seems to actually write the query sequence to the query address.
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result = regs.query.query_sequence;
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break;
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default:
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UNIMPLEMENTED_MSG("Unimplemented query select type {}",
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@ -174,15 +173,31 @@ void Maxwell3D::ProcessQueryGet() {
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// TODO(Subv): Research and implement how query sync conditions work.
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struct LongQueryResult {
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u64_le value;
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u64_le timestamp;
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};
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static_assert(sizeof(LongQueryResult) == 16, "LongQueryResult has wrong size");
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switch (regs.query.query_get.mode) {
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case Regs::QueryMode::Write:
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case Regs::QueryMode::Write2: {
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// Write the current query sequence to the sequence address.
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u32 sequence = regs.query.query_sequence;
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Memory::Write32(*address, sequence);
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// TODO(Subv): Write the proper query response structure to the address when not using short
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// mode.
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if (regs.query.query_get.short_query) {
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// Write the current query sequence to the sequence address.
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// TODO(Subv): Find out what happens if you use a long query type but mark it as a short
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// query.
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Memory::Write32(*address, sequence);
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} else {
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// Write the 128-bit result structure in long mode. Note: We emulate an infinitely fast
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// GPU, this command may actually take a while to complete in real hardware due to GPU
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// wait queues.
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LongQueryResult query_result{};
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query_result.value = result;
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// TODO(Subv): Generate a real GPU timestamp and write it here instead of 0
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query_result.timestamp = 0;
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Memory::WriteBlock(*address, &query_result, sizeof(query_result));
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}
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break;
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}
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default:
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