From 487379c593bcaf3787ede187c5d44f7923b54dc9 Mon Sep 17 00:00:00 2001
From: Fernando Sahmkow <fsahmkow27@gmail.com>
Date: Mon, 17 Feb 2020 18:10:23 -0400
Subject: OpenGL: Implement Fencing backend.

---
 src/video_core/engines/maxwell_3d.cpp | 16 +++++-----------
 src/video_core/engines/maxwell_3d.h   |  4 ----
 2 files changed, 5 insertions(+), 15 deletions(-)

(limited to 'src/video_core/engines')

diff --git a/src/video_core/engines/maxwell_3d.cpp b/src/video_core/engines/maxwell_3d.cpp
index 2605c3b42..c297bc31b 100644
--- a/src/video_core/engines/maxwell_3d.cpp
+++ b/src/video_core/engines/maxwell_3d.cpp
@@ -397,14 +397,6 @@ void Maxwell3D::StampQueryResult(u64 payload, bool long_query) {
     }
 }
 
-void Maxwell3D::ReleaseFences() {
-    for (const auto pair : delay_fences) {
-        const auto [addr, payload] = pair;
-        memory_manager.Write<u32>(addr, static_cast<u32>(payload));
-    }
-    delay_fences.clear();
-}
-
 void Maxwell3D::ProcessQueryGet() {
     // TODO(Subv): Support the other query units.
     ASSERT_MSG(regs.query.query_get.unit == Regs::QueryUnit::Crop,
@@ -412,10 +404,12 @@ void Maxwell3D::ProcessQueryGet() {
 
     switch (regs.query.query_get.operation) {
     case Regs::QueryOperation::Release: {
-        rasterizer.FlushCommands();
-        rasterizer.SyncGuestHost();
         const u64 result = regs.query.query_sequence;
-        delay_fences.emplace_back(regs.query.QueryAddress(), result);
+        if (regs.query.query_get.fence == 1) {
+            rasterizer.SignalFence(regs.query.QueryAddress(), static_cast<u32>(result));
+        } else {
+            StampQueryResult(result, regs.query.query_get.short_query == 0);
+        }
         break;
     }
     case Regs::QueryOperation::Acquire:
diff --git a/src/video_core/engines/maxwell_3d.h b/src/video_core/engines/maxwell_3d.h
index 0a93827ec..59d5752d2 100644
--- a/src/video_core/engines/maxwell_3d.h
+++ b/src/video_core/engines/maxwell_3d.h
@@ -1427,8 +1427,6 @@ public:
         Tables tables{};
     } dirty;
 
-    void ReleaseFences();
-
 private:
     void InitializeRegisterDefaults();
 
@@ -1469,8 +1467,6 @@ private:
 
     std::array<u8, Regs::NUM_REGS> dirty_pointers{};
 
-    std::vector<std::pair<GPUVAddr, u64>> delay_fences;
-
     /// Retrieves information about a specific TIC entry from the TIC buffer.
     Texture::TICEntry GetTICEntry(u32 tic_index) const;
 
-- 
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