Merge pull request #6954 from degasus/coherent

OGL/Streambuffer: Use coherent mapping by default.

Source/Core/VideoBackends/OGL/StreamBuffer.cpp

@@ -216,7 +216,7 @@ public:
 class BufferStorage : public StreamBuffer
 {
 public:
-  BufferStorage(u32 type, u32 size, bool _coherent = false)
+  BufferStorage(u32 type, u32 size, bool _coherent = true)
       : StreamBuffer(type, size), coherent(_coherent)
   {
     CreateFences();
@@ -368,13 +368,12 @@ std::unique_ptr<StreamBuffer> StreamBuffer::Create(u32 type, u32 size)
       return std::make_unique<PinnedMemory>(type, size);
 
     // buffer storage works well in most situations
-    bool coherent = DriverDetails::HasBug(DriverDetails::BUG_BROKEN_EXPLICIT_FLUSH);
     if (g_ogl_config.bSupportsGLBufferStorage &&
         !(DriverDetails::HasBug(DriverDetails::BUG_BROKEN_BUFFER_STORAGE) &&
           type == GL_ARRAY_BUFFER) &&
         !(DriverDetails::HasBug(DriverDetails::BUG_INTEL_BROKEN_BUFFER_STORAGE) &&
           type == GL_ELEMENT_ARRAY_BUFFER))
-      return std::make_unique<BufferStorage>(type, size, coherent);
+      return std::make_unique<BufferStorage>(type, size);
 
     // don't fall back to MapAnd* for Nvidia drivers
     if (DriverDetails::HasBug(DriverDetails::BUG_BROKEN_UNSYNC_MAPPING))

Source/Core/VideoCommon/DriverDetails.cpp

@@ -52,8 +52,6 @@ static BugInfo m_known_bugs[] = {
      BUG_BROKEN_BUFFER_STREAM, -1.0, -1.0, true},
     {API_OPENGL, OS_ALL, VENDOR_QUALCOMM, DRIVER_QUALCOMM, Family::UNKNOWN,
      BUG_BROKEN_NEGATED_BOOLEAN, -1.0, -1.0, true},
-    {API_OPENGL, OS_ALL, VENDOR_QUALCOMM, DRIVER_QUALCOMM, Family::UNKNOWN,
-     BUG_BROKEN_EXPLICIT_FLUSH, -1.0, -1.0, true},
     {API_OPENGL, OS_ALL, VENDOR_ARM, DRIVER_ARM, Family::UNKNOWN, BUG_BROKEN_BUFFER_STREAM, -1.0,
      -1.0, true},
     {API_OPENGL, OS_ALL, VENDOR_ARM, DRIVER_ARM, Family::UNKNOWN, BUG_BROKEN_VSYNC, -1.0, -1.0,

Source/Core/VideoCommon/DriverDetails.h

@@ -200,15 +200,6 @@ enum Bug
   // Causes misrenderings on a large amount of things that draw lines.
   BUG_BROKEN_GEOMETRY_SHADERS,
 
-  // Bug: Explicit flush is very slow on Qualcomm
-  // Started Version: -1
-  // Ended Version: -1
-  // Our ARB_buffer_storage code uses explicit flush to avoid coherent mapping.
-  // Qualcomm seems to have lots of overhead on explicit flushing, but the coherent mapping path is
-  // fine.
-  // So let's use coherent mapping there.
-  BUG_BROKEN_EXPLICIT_FLUSH,
-
   // Bug: glGetBufferSubData for bounding box reads is slow on AMD drivers
   // Started Version: -1
   // Ended Version: -1