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-rw-r--r--src/video_core/engines/maxwell_3d.cpp33
1 files changed, 24 insertions, 9 deletions
diff --git a/src/video_core/engines/maxwell_3d.cpp b/src/video_core/engines/maxwell_3d.cpp
index 23e70cd8a..ef12d9300 100644
--- a/src/video_core/engines/maxwell_3d.cpp
+++ b/src/video_core/engines/maxwell_3d.cpp
@@ -156,16 +156,15 @@ void Maxwell3D::ProcessQueryGet() {
// TODO(Subv): Support the other query units.
ASSERT_MSG(regs.query.query_get.unit == Regs::QueryUnit::Crop,
"Units other than CROP are unimplemented");
- ASSERT_MSG(regs.query.query_get.short_query,
- "Writing the entire query result structure is unimplemented");
u32 value = Memory::Read32(*address);
- u32 result = 0;
+ u64 result = 0;
// TODO(Subv): Support the other query variables
switch (regs.query.query_get.select) {
case Regs::QuerySelect::Zero:
- result = 0;
+ // This seems to actually write the query sequence to the query address.
+ result = regs.query.query_sequence;
break;
default:
UNIMPLEMENTED_MSG("Unimplemented query select type {}",
@@ -174,15 +173,31 @@ void Maxwell3D::ProcessQueryGet() {
// TODO(Subv): Research and implement how query sync conditions work.
+ struct LongQueryResult {
+ u64_le value;
+ u64_le timestamp;
+ };
+ static_assert(sizeof(LongQueryResult) == 16, "LongQueryResult has wrong size");
+
switch (regs.query.query_get.mode) {
case Regs::QueryMode::Write:
case Regs::QueryMode::Write2: {
- // Write the current query sequence to the sequence address.
u32 sequence = regs.query.query_sequence;
- Memory::Write32(*address, sequence);
-
- // TODO(Subv): Write the proper query response structure to the address when not using short
- // mode.
+ if (regs.query.query_get.short_query) {
+ // Write the current query sequence to the sequence address.
+ // TODO(Subv): Find out what happens if you use a long query type but mark it as a short
+ // query.
+ Memory::Write32(*address, sequence);
+ } else {
+ // Write the 128-bit result structure in long mode. Note: We emulate an infinitely fast
+ // GPU, this command may actually take a while to complete in real hardware due to GPU
+ // wait queues.
+ LongQueryResult query_result{};
+ query_result.value = result;
+ // TODO(Subv): Generate a real GPU timestamp and write it here instead of 0
+ query_result.timestamp = 0;
+ Memory::WriteBlock(*address, &query_result, sizeof(query_result));
+ }
break;
}
default: