VideoConfig: Add a field for indicating logic op support in the backend

Source/Core/VideoBackends/D3D/D3DBase.cpp

@@ -414,7 +414,10 @@ HRESULT Create(HWND wnd)
 
   hr = device->QueryInterface<ID3D11Device1>(&device1);
   if (FAILED(hr))
+  {
     WARN_LOG(VIDEO, "Missing Direct3D 11.1 support. Logical operations will not be supported.");
+    g_Config.backend_info.bSupportsLogicOp = false;
+  }
 
   // BGRA textures are easier to deal with in TextureCache, but might not be supported
   UINT format_support;

Source/Core/VideoBackends/D3D/main.cpp

@@ -62,6 +62,7 @@ void VideoBackend::InitBackendInfo()
   g_Config.backend_info.bSupportsClipControl = true;
   g_Config.backend_info.bSupportsDepthClamp = true;
   g_Config.backend_info.bSupportsReversedDepthRange = false;
+  g_Config.backend_info.bSupportsLogicOp = true;
   g_Config.backend_info.bSupportsMultithreading = false;
   g_Config.backend_info.bSupportsGPUTextureDecoding = false;
   g_Config.backend_info.bSupportsST3CTextures = false;

Source/Core/VideoBackends/Null/NullBackend.cpp

@@ -47,6 +47,7 @@ void VideoBackend::InitBackendInfo()
   g_Config.backend_info.bSupportsBPTCTextures = false;
   g_Config.backend_info.bSupportsFramebufferFetch = false;
   g_Config.backend_info.bSupportsBackgroundCompiling = false;
+  g_Config.backend_info.bSupportsLogicOp = false;
 
   // aamodes: We only support 1 sample, so no MSAA
   g_Config.backend_info.Adapters.clear();

Source/Core/VideoBackends/OGL/Render.cpp

@@ -521,6 +521,9 @@ Renderer::Renderer()
     // depth clamping.
     g_Config.backend_info.bSupportsDepthClamp = false;
 
+    // GLES does not support logic op.
+    g_Config.backend_info.bSupportsLogicOp = false;
+
     if (GLExtensions::Supports("GL_EXT_shader_framebuffer_fetch"))
     {
       g_ogl_config.SupportedFramebufferFetch = EsFbFetchType::FbFetchExt;

Source/Core/VideoBackends/OGL/main.cpp

@@ -83,6 +83,7 @@ void VideoBackend::InitBackendInfo()
   g_Config.backend_info.bSupportsPostProcessing = true;
   g_Config.backend_info.bSupportsSSAA = true;
   g_Config.backend_info.bSupportsReversedDepthRange = true;
+  g_Config.backend_info.bSupportsLogicOp = true;
   g_Config.backend_info.bSupportsMultithreading = false;
   g_Config.backend_info.bSupportsCopyToVram = true;
 

Source/Core/VideoBackends/Software/SWmain.cpp

@@ -71,6 +71,7 @@ void VideoSoftware::InitBackendInfo()
   g_Config.backend_info.bSupportsCopyToVram = false;
   g_Config.backend_info.bSupportsFramebufferFetch = false;
   g_Config.backend_info.bSupportsBackgroundCompiling = false;
+  g_Config.backend_info.bSupportsLogicOp = true;
 
   // aamodes
   g_Config.backend_info.AAModes = {1};

Source/Core/VideoBackends/Vulkan/VulkanContext.cpp

@@ -246,6 +246,7 @@ void VulkanContext::PopulateBackendInfo(VideoConfig* config)
   config->backend_info.bSupportsST3CTextures = false;              // Dependent on features.
   config->backend_info.bSupportsBPTCTextures = false;              // Dependent on features.
   config->backend_info.bSupportsReversedDepthRange = false;  // No support yet due to driver bugs.
+  config->backend_info.bSupportsLogicOp = false;             // Dependent on features.
   config->backend_info.bSupportsCopyToVram = true;           // Assumed support.
   config->backend_info.bSupportsFramebufferFetch = false;
 }
@@ -272,6 +273,7 @@ void VulkanContext::PopulateBackendInfoFeatures(VideoConfig* config, VkPhysicalD
   config->backend_info.bSupportsBBox = config->backend_info.bSupportsFragmentStoresAndAtomics =
       (features.fragmentStoresAndAtomics == VK_TRUE);
   config->backend_info.bSupportsSSAA = (features.sampleRateShading == VK_TRUE);
+  config->backend_info.bSupportsLogicOp = (features.logicOp == VK_TRUE);
 
   // Disable geometry shader when shaderTessellationAndGeometryPointSize is not supported.
   // Seems this is needed for gl_Layer.

Source/Core/VideoCommon/ShaderGenCommon.cpp

@@ -33,6 +33,7 @@ ShaderHostConfig ShaderHostConfig::GetCurrent()
   bits.backend_dynamic_sampler_indexing =
       g_ActiveConfig.backend_info.bSupportsDynamicSamplerIndexing;
   bits.backend_shader_framebuffer_fetch = g_ActiveConfig.backend_info.bSupportsFramebufferFetch;
+  bits.backend_logic_op = g_ActiveConfig.backend_info.bSupportsLogicOp;
   return bits;
 }
 

Source/Core/VideoCommon/ShaderGenCommon.h

@@ -180,7 +180,8 @@ union ShaderHostConfig
     u32 backend_bitfield : 1;
     u32 backend_dynamic_sampler_indexing : 1;
     u32 backend_shader_framebuffer_fetch : 1;
-    u32 pad : 11;
+    u32 backend_logic_op : 1;
+    u32 pad : 10;
   };
 
   static ShaderHostConfig GetCurrent();

Source/Core/VideoCommon/VideoConfig.h

@@ -201,6 +201,7 @@ struct VideoConfig final
     bool bSupportsFragmentStoresAndAtomics;  // a.k.a. OpenGL SSBOs a.k.a. Direct3D UAVs
     bool bSupportsDepthClamp;  // Needed by VertexShaderGen, so must stay in VideoCommon
     bool bSupportsReversedDepthRange;
+    bool bSupportsLogicOp;
     bool bSupportsMultithreading;
     bool bSupportsGPUTextureDecoding;
     bool bSupportsST3CTextures;