OGL: Invalidate tracked state when calling ResetAPIState()

Due to the current design, any of the GL state can be mutated after
calling this function, so we can't assume that the tracked state will
match if we call SetPipeline() after ResetAPIState().

Source/Core/VideoBackends/OGL/Render.cpp

@@ -357,7 +357,10 @@ Renderer::Renderer(std::unique_ptr<GLContext> main_gl_context)
     : ::Renderer(static_cast<int>(std::max(main_gl_context->GetBackBufferWidth(), 1u)),
                  static_cast<int>(std::max(main_gl_context->GetBackBufferHeight(), 1u)),
                  AbstractTextureFormat::RGBA8),
-      m_main_gl_context(std::move(main_gl_context))
+      m_main_gl_context(std::move(main_gl_context)),
+      m_current_rasterization_state(RenderState::GetInvalidRasterizationState()),
+      m_current_depth_state(RenderState::GetInvalidDepthState()),
+      m_current_blend_state(RenderState::GetInvalidBlendingState())
 {
   bool bSuccess = true;
 
@@ -1585,6 +1588,9 @@ void Renderer::ResetAPIState()
   }
   glDepthMask(GL_FALSE);
   glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
+  m_current_rasterization_state = RenderState::GetInvalidRasterizationState();
+  m_current_depth_state = RenderState::GetInvalidDepthState();
+  m_current_blend_state = RenderState::GetInvalidBlendingState();
 }
 
 void Renderer::RestoreAPIState()
@@ -1603,10 +1609,6 @@ void Renderer::RestoreAPIState()
   }
   BPFunctions::SetScissor();
   BPFunctions::SetViewport();
-
-  ApplyRasterizationState(m_current_rasterization_state, true);
-  ApplyDepthState(m_current_depth_state, true);
-  ApplyBlendingState(m_current_blend_state, true);
 }
 
 void Renderer::ApplyRasterizationState(const RasterizationState state, bool force)

Source/Core/VideoBackends/OGL/Render.h

@@ -168,8 +168,8 @@ private:
   std::unique_ptr<GLContext> m_main_gl_context;
   std::array<const AbstractTexture*, 8> m_bound_textures{};
   const OGLPipeline* m_graphics_pipeline = nullptr;
-  RasterizationState m_current_rasterization_state = {};
+  RasterizationState m_current_rasterization_state;
-  DepthState m_current_depth_state = {};
+  DepthState m_current_depth_state;
-  BlendingState m_current_blend_state = {};
+  BlendingState m_current_blend_state;
 };
 }  // namespace OGL

Source/Core/VideoCommon/RenderState.cpp

@@ -199,6 +199,13 @@ SamplerState& SamplerState::operator=(const SamplerState& rhs)
 
 namespace RenderState
 {
+RasterizationState GetInvalidRasterizationState()
+{
+  RasterizationState state;
+  state.hex = UINT32_C(0xFFFFFFFF);
+  return state;
+}
+
 RasterizationState GetNoCullRasterizationState()
 {
   RasterizationState state = {};
@@ -206,6 +213,13 @@ RasterizationState GetNoCullRasterizationState()
   return state;
 }
 
+DepthState GetInvalidDepthState()
+{
+  DepthState state;
+  state.hex = UINT32_C(0xFFFFFFFF);
+  return state;
+}
+
 DepthState GetNoDepthTestingDepthStencilState()
 {
   DepthState state = {};
@@ -215,6 +229,13 @@ DepthState GetNoDepthTestingDepthStencilState()
   return state;
 }
 
+BlendingState GetInvalidBlendingState()
+{
+  BlendingState state;
+  state.hex = UINT32_C(0xFFFFFFFF);
+  return state;
+}
+
 BlendingState GetNoBlendingBlendState()
 {
   BlendingState state = {};
@@ -230,6 +251,13 @@ BlendingState GetNoBlendingBlendState()
   return state;
 }
 
+SamplerState GetInvalidSamplerState()
+{
+  SamplerState state;
+  state.hex = UINT64_C(0xFFFFFFFFFFFFFFFF);
+  return state;
+}
+
 SamplerState GetPointSamplerState()
 {
   SamplerState state = {};

Source/Core/VideoCommon/RenderState.h

@@ -113,9 +113,13 @@ union SamplerState
 
 namespace RenderState
 {
+RasterizationState GetInvalidRasterizationState();
 RasterizationState GetNoCullRasterizationState();
+DepthState GetInvalidDepthState();
 DepthState GetNoDepthTestingDepthStencilState();
+BlendingState GetInvalidBlendingState();
 BlendingState GetNoBlendingBlendState();
+SamplerState GetInvalidSamplerState();
 SamplerState GetPointSamplerState();
 SamplerState GetLinearSamplerState();
 }