VideoConfig: Add bool for sampler LOD bias support

Source/Core/VideoBackends/D3D/D3DMain.cpp

@@ -109,6 +109,7 @@ void VideoBackend::FillBackendInfo()
   g_Config.backend_info.bSupportsPipelineCacheData = false;
   g_Config.backend_info.bSupportsCoarseDerivatives = true;
   g_Config.backend_info.bSupportsTextureQueryLevels = true;
+  g_Config.backend_info.bSupportsLodBiasInSampler = true;
   g_Config.backend_info.bSupportsLogicOp = D3D::SupportsLogicOp(g_Config.iAdapter);
 
   g_Config.backend_info.Adapters = D3DCommon::GetAdapterNames();

Source/Core/VideoBackends/D3D12/VideoBackend.cpp

@@ -85,6 +85,7 @@ void VideoBackend::FillBackendInfo()
   g_Config.backend_info.bSupportsPipelineCacheData = true;
   g_Config.backend_info.bSupportsCoarseDerivatives = true;
   g_Config.backend_info.bSupportsTextureQueryLevels = true;
+  g_Config.backend_info.bSupportsLodBiasInSampler = true;
 
   // We can only check texture support once we have a device.
   if (g_dx_context)

Source/Core/VideoBackends/Null/NullBackend.cpp

@@ -58,6 +58,7 @@ void VideoBackend::InitBackendInfo()
   g_Config.backend_info.bSupportsPipelineCacheData = false;
   g_Config.backend_info.bSupportsCoarseDerivatives = false;
   g_Config.backend_info.bSupportsTextureQueryLevels = false;
+  g_Config.backend_info.bSupportsLodBiasInSampler = false;
 
   // aamodes: We only support 1 sample, so no MSAA
   g_Config.backend_info.Adapters.clear();

Source/Core/VideoBackends/OGL/OGLMain.cpp

@@ -93,6 +93,7 @@ void VideoBackend::InitBackendInfo()
   g_Config.backend_info.bSupportsPartialDepthCopies = true;
   g_Config.backend_info.bSupportsShaderBinaries = false;
   g_Config.backend_info.bSupportsPipelineCacheData = false;
+  g_Config.backend_info.bSupportsLodBiasInSampler = true;
 
   // TODO: There is a bug here, if texel buffers or SSBOs/atomics are not supported the graphics
   // options will show the option when it is not supported. The only way around this would be

Source/Core/VideoBackends/OGL/OGLRender.cpp

@@ -513,6 +513,9 @@ Renderer::Renderer(std::unique_ptr<GLContext> main_gl_context, float backbuffer_
     // ARB_get_texture_sub_image (unlikely, except maybe on NVIDIA), we can use that instead.
     g_Config.backend_info.bSupportsDepthReadback = g_ogl_config.bSupportsTextureSubImage;
 
+    // GL_TEXTURE_LOD_BIAS is not supported on GLES.
+    g_Config.backend_info.bSupportsLodBiasInSampler = false;
+
     if (GLExtensions::Supports("GL_EXT_shader_framebuffer_fetch"))
     {
       g_ogl_config.SupportedFramebufferFetch = EsFbFetchType::FbFetchExt;

Source/Core/VideoBackends/Software/SWmain.cpp

@@ -87,6 +87,7 @@ void VideoSoftware::InitBackendInfo()
   g_Config.backend_info.bSupportsBBox = true;
   g_Config.backend_info.bSupportsCoarseDerivatives = false;
   g_Config.backend_info.bSupportsTextureQueryLevels = false;
+  g_Config.backend_info.bSupportsLodBiasInSampler = false;
 
   // aamodes
   g_Config.backend_info.AAModes = {1};

Source/Core/VideoBackends/Vulkan/VulkanContext.cpp

@@ -289,6 +289,7 @@ void VulkanContext::PopulateBackendInfo(VideoConfig* config)
   config->backend_info.bSupportsFramebufferFetch = false;          // Dependent on OS and features.
   config->backend_info.bSupportsCoarseDerivatives = true;          // Assumed support.
   config->backend_info.bSupportsTextureQueryLevels = true;         // Assumed support.
+  config->backend_info.bSupportsLodBiasInSampler = false;          // Dependent on OS.
 }
 
 void VulkanContext::PopulateBackendInfoAdapters(VideoConfig* config, const GPUList& gpu_list)
@@ -316,6 +317,13 @@ void VulkanContext::PopulateBackendInfoFeatures(VideoConfig* config, VkPhysicalD
   config->backend_info.bSupportsSSAA = (features.sampleRateShading == VK_TRUE);
   config->backend_info.bSupportsLogicOp = (features.logicOp == VK_TRUE);
 
+#ifdef __APPLE__
+  // Metal doesn't support this.
+  config->backend_info.bSupportsLodBiasInSampler = false;
+#else
+  config->backend_info.bSupportsLodBiasInSampler = true;
+#endif
+
   // Disable geometry shader when shaderTessellationAndGeometryPointSize is not supported.
   // Seems this is needed for gl_Layer.
   if (!features.shaderTessellationAndGeometryPointSize)

Source/Core/VideoCommon/VideoConfig.h

@@ -233,6 +233,7 @@ struct VideoConfig final
     bool bSupportsPipelineCacheData = false;
     bool bSupportsCoarseDerivatives = false;
     bool bSupportsTextureQueryLevels = false;
+    bool bSupportsLodBiasInSampler = false;
   } backend_info;
 
   // Utility