nx2: get title 4 past the difficulty confirm

- MME: implement MME_DMA_READ / MME_DMA_READ_FIFOED (Turing macros read query
  results into their load FIFO; the conditional-render macro at 0x142 needs it).
- vi2 present waits up to 4 s for the frame fence (was 250 ms) so shader
  compile stalls don't let the game lap its equal-value gate semaphores.
- Native QMD: fire the third release slot at word 52, which NVN2 patches for
  queue-to-queue syncs (compute queue releasing a gate the 3D queue waits on).
- Compute class SET_REPORT_SEMAPHORE (0x6c0-0x6c3) releases.
- Ampere lowering: AOFFI, any LOP3 truth table, STG RZ, LDG 0x981, IABS,
  I2FP rounding, IMAD negated addend, SHFL 0x989 (all 77 title-4 shaders lower).
- Debug: EDEN_NX2_SEM_WATCH=<addr> traces acquires, releases, method
  arguments and compute macro emits for one semaphore block;
  EDEN_NX2_KEY_SCRIPT scripted key presses; per-submit logs moved to TRACE.

1 files changed, 8 insertions, 0 deletions

diff --git a/src/video_core/renderer_vulkan/vk_rasterizer.cpp b/src/video_core/renderer_vulkan/vk_rasterizer.cpp
index 1d9965a9a5..044c783a99 100644
--- a/src/video_core/renderer_vulkan/vk_rasterizer.cpp
+++ b/src/video_core/renderer_vulkan/vk_rasterizer.cpp
@@ -1103,6 +1103,14 @@ void RasterizerVulkan::AccelerateInlineToMemory(GPUVAddr address, size_t copy_si
         if (memory.size() >= sizeof(first_word)) std::memcpy(&first_word, memory.data(), sizeof(first_word));
         VideoCommon::TraceNativeQuery(11, gpu_memory->GetID(), address, cpu_addr.value_or(0),
             0, first_word, static_cast<u32>(copy_size));
+        static const GPUVAddr watch = [] {
+            const char* value = std::getenv("EDEN_NX2_SEM_WATCH");
+            return value ? GPUVAddr{std::strtoull(value, nullptr, 16)} : GPUVAddr{};
+        }();
+        if (watch != 0 && address < watch + 16 && address + copy_size > watch) {
+            LOG_INFO(Render_Vulkan, "Semaphore watch: inline write {:#x} size {} first word {:#x}",
+                     address, copy_size, first_word);
+        }
     }
     if (!cpu_addr) [[unlikely]] {
         gpu_memory->WriteBlock(address, memory.data(), copy_size);