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Making the GPU counter a vblank counter, not a timer.

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This commit is contained in:
Ben Vanik
2013-10-20 02:00:51 -07:00
parent 39adeef2e3
commit fbea5a6394
6 changed files with 18 additions and 8 deletions
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12
src/xenia/gpu/ring_buffer_worker.cc
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@@ -36,7 +36,8 @@ RingBufferWorker::RingBufferWorker(
LARGE_INTEGER perf_counter;
QueryPerformanceCounter(&perf_counter);
counter_base_ = perf_counter.QuadPart;
time_base_ = perf_counter.QuadPart;
counter_ = 0;
}
RingBufferWorker::~RingBufferWorker() {
@@ -44,10 +45,10 @@ RingBufferWorker::~RingBufferWorker() {
CloseHandle(write_ptr_index_event_);
}
uint64_t RingBufferWorker::GetCounter() {
uint64_t RingBufferWorker::QueryTime() {
LARGE_INTEGER perf_counter;
QueryPerformanceCounter(&perf_counter);
return perf_counter.QuadPart - counter_base_;
return perf_counter.QuadPart - time_base_;
}
void RingBufferWorker::Initialize(GraphicsDriver* driver,
@@ -476,9 +477,8 @@ uint32_t RingBufferWorker::ExecutePacket(PacketArgs& args) {
WriteRegister(XE_GPU_REG_VGT_EVENT_INITIATOR, initiator & 0x1F);
uint32_t data_value;
if ((initiator >> 31) & 0x1) {
// Write counter (GPU clock counter?).
// TODO(benvanik): 64-bit write?
data_value = (uint32_t)GetCounter();
// Write counter (GPU vblank counter?).
data_value = counter_;
} else {
// Write value.
data_value = value;