2 files changed, 16 insertions, 0 deletions

diff --git a/src/video_core/renderer_opengl/gl_rasterizer.cpp b/src/video_core/renderer_opengl/gl_rasterizer.cpp
index d58dcedea..ed7558073 100644
--- a/src/video_core/renderer_opengl/gl_rasterizer.cpp
+++ b/src/video_core/renderer_opengl/gl_rasterizer.cpp
@@ -525,6 +525,21 @@ void RasterizerOpenGL::TickFrame() {
     }
 }
 
+bool RasterizerOpenGL::AccelerateConditionalRendering() {
+    if (Settings::IsGPULevelHigh()) {
+        // Reimplement Host conditional rendering.
+        return false;
+    }
+    // Medium / Low Hack: stub any checks on queries writen into the buffer cache.
+    const GPUVAddr condition_address{maxwell3d->regs.render_enable.Address()};
+    Maxwell::ReportSemaphore::Compare cmp;
+    if (gpu_memory->IsMemoryDirty(condition_address, sizeof(cmp),
+                                  VideoCommon::CacheType::BufferCache)) {
+        return true;
+    }
+    return false;
+}
+
 bool RasterizerOpenGL::AccelerateSurfaceCopy(const Tegra::Engines::Fermi2D::Surface& src,
                                              const Tegra::Engines::Fermi2D::Surface& dst,
                                              const Tegra::Engines::Fermi2D::Config& copy_config) {
diff --git a/src/video_core/renderer_opengl/gl_rasterizer.h b/src/video_core/renderer_opengl/gl_rasterizer.h
index 94e65d64b..d119c2b66 100644
--- a/src/video_core/renderer_opengl/gl_rasterizer.h
+++ b/src/video_core/renderer_opengl/gl_rasterizer.h
@@ -100,6 +100,7 @@ public:
     void TiledCacheBarrier() override;
     void FlushCommands() override;
     void TickFrame() override;
+    bool AccelerateConditionalRendering() override;
     bool AccelerateSurfaceCopy(const Tegra::Engines::Fermi2D::Surface& src,
                                const Tegra::Engines::Fermi2D::Surface& dst,
                                const Tegra::Engines::Fermi2D::Config& copy_config) override;