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Code Issues Releases Activity

Maxwell3D: Correct query reporting.

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This commit is contained in:
Fernando Sahmkow 2020-01-27 22:48:15 -04:00 committed by FernandoS27
parent 84ea9c2b42
commit 0cb3bcfbb7
2 changed files with 61 additions and 54 deletions
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83
src/video_core/engines/maxwell_3d.cpp
View file

@ -519,61 +519,66 @@ void Maxwell3D::ProcessFirmwareCall4() {
regs.reg_array[0xd00] = 1;
}
void Maxwell3D::ProcessQueryGet() {
void Maxwell3D::StampQueryResult(u64 payload, bool long_query) {
struct LongQueryResult {
u64_le value;
u64_le timestamp;
};
static_assert(sizeof(LongQueryResult) == 16, "LongQueryResult has wrong size");
const GPUVAddr sequence_address{regs.query.QueryAddress()};
// Since the sequence address is given as a GPU VAddr, we have to convert it to an application
// VAddr before writing.
if (long_query) {
// 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 = payload;
// TODO(Subv): Generate a real GPU timestamp and write it here instead of CoreTiming
query_result.timestamp = system.CoreTiming().GetTicks();
memory_manager.WriteBlock(sequence_address, &query_result, sizeof(query_result));
} else {
memory_manager.Write<u32>(sequence_address, static_cast<u32>(payload));
}
}
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");
u64 result = 0;
// TODO(Subv): Support the other query variables
switch (regs.query.query_get.operation) {
case Regs::QueryOperation::Release: {
u64 result = regs.query.query_sequence;
StampQueryResult(result, regs.query.query_get.short_query == 0);
break;
}
case Regs::QueryOperation::Acquire: {
// Todo(Blinkhawk): Under this operation, the GPU waits for the CPU
// to write a value that matches the current payload.
UNIMPLEMENTED_MSG("Unimplemented query operation ACQUIRE");
break;
}
case Regs::QueryOperation::Counter: {
u64 result{};
switch (regs.query.query_get.select) {
case Regs::QuerySelect::Zero:
// This seems to actually write the query sequence to the query address.
result = regs.query.query_sequence;
result = 0;
break;
default:
result = 1;
UNIMPLEMENTED_MSG("Unimplemented query select type {}",
static_cast<u32>(regs.query.query_get.select.Value()));
}
// 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: {
u32 sequence = regs.query.query_sequence;
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_manager.Write<u32>(sequence_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 CoreTiming
query_result.timestamp = system.CoreTiming().GetTicks();
memory_manager.WriteBlock(sequence_address, &query_result, sizeof(query_result));
}
StampQueryResult(result, regs.query.query_get.short_query == 0);
break;
}
case Regs::QueryOperation::Trap: {
UNIMPLEMENTED_MSG("Unimplemented query operation TRAP");
break;
}
default: {
UNIMPLEMENTED_MSG("Unknown query operation");
break;
}
default:
UNIMPLEMENTED_MSG("Query mode {} not implemented",
static_cast<u32>(regs.query.query_get.mode.Value()));
}
}

16
src/video_core/engines/maxwell_3d.h
View file

@ -71,12 +71,11 @@ public:
static constexpr std::size_t MaxConstBuffers = 18;
static constexpr std::size_t MaxConstBufferSize = 0x10000;
enum class QueryMode : u32 {
Write = 0,
Sync = 1,
// TODO(Subv): It is currently unknown what the difference between method 2 and method 0
// is.
Write2 = 2,
enum class QueryOperation : u32 {
Release = 0,
Acquire = 1,
Counter = 2,
Trap = 3,
};
enum class QueryUnit : u32 {
@ -1077,7 +1076,7 @@ public:
u32 query_sequence;
union {
u32 raw;
BitField<0, 2, QueryMode> mode;
BitField<0, 2, QueryOperation> operation;
BitField<4, 1, u32> fence;
BitField<12, 4, QueryUnit> unit;
BitField<16, 1, QuerySyncCondition> sync_cond;
@ -1409,6 +1408,9 @@ private:
/// Handles a write to the QUERY_GET register.
void ProcessQueryGet();
// Writes the query result accordingly
void StampQueryResult(u64 payload, bool long_query);
// Handles Conditional Rendering
void ProcessQueryCondition();