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[GPU] Improve fake occlusion query compatibility 

- Older D3D implementation used different flags
This commit is contained in:
Gliniak 2021-05-17 17:05:12 +02:00 committed by Triang3l
parent 0965975cbe
commit 1a2282894a
1 changed files with 7 additions and 3 deletions
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10
src/xenia/gpu/command_processor.cc
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@ -1145,6 +1145,7 @@ bool CommandProcessor::ExecutePacketType3_EVENT_WRITE_EXT(RingBuffer* reader,
bool CommandProcessor::ExecutePacketType3_EVENT_WRITE_ZPD(RingBuffer* reader,
uint32_t packet,
uint32_t count) {
const uint32_t kQueryFinished = xe::byte_swap(0xFFFFFEED);
assert_true(count == 1);
uint32_t initiator = reader->ReadAndSwap<uint32_t>();
// Writeback initiator.
@ -1160,10 +1161,13 @@ bool CommandProcessor::ExecutePacketType3_EVENT_WRITE_ZPD(RingBuffer* reader,
register_file_->values[XE_GPU_REG_RB_SAMPLE_COUNT_ADDR].u32);
// 0xFFFFFEED is written to this two locations by D3D only on D3DISSUE_END
// and used to detect a finished query.
bool isEnd = pSampleCounts->ZPass_A == xe::byte_swap(0xFFFFFEED) &&
pSampleCounts->ZPass_B == xe::byte_swap(0xFFFFFEED);
bool is_end_via_z_pass = pSampleCounts->ZPass_A == kQueryFinished &&
pSampleCounts->ZPass_B == kQueryFinished;
// Older versions of D3D also checks for ZFail (First Gears of War)
bool is_end_via_z_fail = pSampleCounts->ZFail_A == kQueryFinished &&
pSampleCounts->ZFail_B == kQueryFinished;
std::memset(pSampleCounts, 0, sizeof(xe_gpu_depth_sample_counts));
if (isEnd) {
if (is_end_via_z_pass || is_end_via_z_fail) {
pSampleCounts->ZPass_A = fake_sample_count;
pSampleCounts->Total_A = fake_sample_count;
}