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graphics: synthesize always-visible occlusion query results

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nmzik committed 2026-08-22 01:47:46 +02:00
1 parent 5e64efce4f
commit c130d74efc
4 files changed
+93 -11
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src/graphics/guest_gpu/graphicsRun.cpp
+31 -4
View File
@@ -27,6 +27,7 @@
#include <cstdio>
#include <deque>
#include <memory>
#include <mutex>
#include <semaphore>
#include <thread>
#include <vector>
@@ -1467,12 +1468,14 @@ void CommandProcessor::TriggerEopEventAtEndOfPipe(uint32_t interrupt_context_id)
Sync::TriggerEopEventAtEndOfPipe(CurrentBuffer(), interrupt_context_id);
}
void CommandProcessor::TriggerEvent(uint32_t event_type, uint32_t event_index) {
void CommandProcessor::TriggerEvent(uint32_t event_type, uint32_t event_index,
uint64_t event_address) {
if (GraphicsRunDebugDumpEnabled()) {
LOGF("CommandProcessor::TriggerEvent()\n"
"\t event_type = 0x%08" PRIx32 "\n"
"\t event_index = 0x%08" PRIx32 "\n",
event_type, event_index);
"\t event_index = 0x%08" PRIx32 "\n"
"\t address = 0x%016" PRIx64 "\n",
event_type, event_index, event_address);
}
const auto valid_cache_event_index = event_index == 0x00000000 || event_index == 0x00000007;
@@ -1509,12 +1512,36 @@ void CommandProcessor::TriggerEvent(uint32_t event_type, uint32_t event_index) {
case 0x0000001a:
case 0x0000001b:
case 0x00000038:
case 0x00000039:
case 0x0000003a:
LOGF("\t temporary: ignoring unsupported event_write type 0x%08" PRIx32
", index 0x%08" PRIx32 "\n",
event_type, event_index);
break;
case 0x00000039: {
if (event_index != 0x00000001 || event_address == 0 || (event_address & 0x7u) != 0) {
EXIT("invalid occlusion-counter dump: index=0x%08" PRIx32 ", address=0x%016" PRIx64
"\n",
event_index, event_address);
}
static std::once_flag warning_once;
std::call_once(warning_once, [] {
std::printf("Warning: game uses occlusion queries, which are currently treated as "
"always visible; GPU usage may be higher and FPS may be lower.\n");
});
// Until host occlusion queries are implemented, publish an always-visible result. The
// PS5 layout contains one interleaved begin/end pair per DB, and bit 63 marks a result
// ready.
constexpr uint64_t ready_bit = 1ull << 63u;
constexpr uint64_t counter_mask = ready_bit - 1u;
auto* results = reinterpret_cast<volatile uint64_t*>(event_address);
const auto value = ready_bit | m_synthetic_occlusion_counter;
for (uint32_t db = 0; db < 16u; db++) {
results[db * 2u] = value;
}
m_synthetic_occlusion_counter = (m_synthetic_occlusion_counter + 1u) & counter_mask;
break;
}
default:
EXIT("unknown event type: 0x%08" PRIx32 ", 0x%08" PRIx32 "\n", event_type, event_index);
}