Renderers: Make shader cache path a prefix instead of directory

src/core/gpu_hw_d3d11.cpp

@@ -38,7 +38,7 @@ bool GPU_HW_D3D11::Initialize(HostDisplay* host_display, System* system, DMA* dm
   if (!m_device || !m_context)
     return false;
 
-  m_shader_cache.Open(system->GetHostInterface()->GetUserDirectoryRelativePath("cache"), m_device->GetFeatureLevel(),
+  m_shader_cache.Open(system->GetHostInterface()->GetShaderCacheBasePath(), m_device->GetFeatureLevel(),
                       system->GetSettings().gpu_use_debug_device);
 
   if (!CreateFramebuffer())

src/core/gpu_hw_opengl.cpp

@@ -39,7 +39,7 @@ bool GPU_HW_OpenGL::Initialize(HostDisplay* host_display, System* system, DMA* d
 
   SetCapabilities(host_display);
 
-  m_shader_cache.Open(IsGLES(), system->GetHostInterface()->GetUserDirectoryRelativePath("cache"));
+  m_shader_cache.Open(IsGLES(), system->GetHostInterface()->GetShaderCacheBasePath());
 
   if (!GPU_HW::Initialize(host_display, system, dma, interrupt_controller, timers))
     return false;

src/core/host_interface.cpp

@@ -318,9 +318,9 @@ void HostInterface::OnRunningGameChanged() {}
 
 void HostInterface::OnControllerTypeChanged(u32 slot) {}
 
-std::string HostInterface::GetShaderCacheDirectory()
+std::string HostInterface::GetShaderCacheBasePath() const
 {
-  return GetUserDirectoryRelativePath("cache");
+  return GetUserDirectoryRelativePath("cache/");
 }
 
 void HostInterface::SetDefaultSettings(SettingsInterface& si)

src/core/host_interface.h

@@ -103,6 +103,9 @@ public:
   /// Returns the default path to a memory card for a specific game.
   virtual std::string GetGameMemoryCardPath(const char* game_code, u32 slot) const;
 
+  /// Returns the path to the shader cache directory.
+  virtual std::string GetShaderCacheBasePath() const;
+
   /// Returns a setting value from the configuration.
   virtual std::string GetSettingValue(const char* section, const char* key, const char* default_value = "") = 0;
 
@@ -127,9 +130,6 @@ protected:
   virtual void OnRunningGameChanged();
   virtual void OnControllerTypeChanged(u32 slot);
 
-  /// Returns the path to the shader cache directory.
-  virtual std::string GetShaderCacheDirectory();
-
   /// Restores all settings to defaults.
   virtual void SetDefaultSettings(SettingsInterface& si);