Enable VK_KHR_uniform_buffer_standard_layout when available

We now attempt to enable `VK_KHR_uniform_buffer_standard_layout` when present as lax UBO layout significantly reduces complexity. If a device doesn't support this extension, we still assume that the device supports it implicitly as this has proven to be true across all major mobile GPU vendors regardless of the driver version but enabling this prevents validation layer errors.

app/src/main/cpp/skyline/gpu.cpp

@@ -123,7 +123,7 @@ namespace skyline::gpu {
                                          const vk::raii::PhysicalDevice &physicalDevice,
                                          decltype(vk::DeviceQueueCreateInfo::queueCount) &vkQueueFamilyIndex,
                                          QuirkManager &quirks) {
-        auto deviceFeatures2{physicalDevice.getFeatures2<vk::PhysicalDeviceFeatures2, vk::PhysicalDeviceCustomBorderColorFeaturesEXT, vk::PhysicalDeviceVertexAttributeDivisorFeaturesEXT, vk::PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT, vk::PhysicalDeviceShaderFloat16Int8Features, vk::PhysicalDeviceShaderAtomicInt64Features>()};
+        auto deviceFeatures2{physicalDevice.getFeatures2<vk::PhysicalDeviceFeatures2, vk::PhysicalDeviceCustomBorderColorFeaturesEXT, vk::PhysicalDeviceVertexAttributeDivisorFeaturesEXT, vk::PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT, vk::PhysicalDeviceShaderFloat16Int8Features, vk::PhysicalDeviceShaderAtomicInt64Features, vk::PhysicalDeviceUniformBufferStandardLayoutFeatures>()};
         decltype(deviceFeatures2) enabledFeatures2{}; // We only want to enable features we required due to potential overhead from unused features
 
         #define FEAT_REQ(structName, feature)                                            \

app/src/main/cpp/skyline/gpu/quirk_manager.cpp

@@ -7,6 +7,7 @@
 namespace skyline::gpu {
     QuirkManager::QuirkManager(const DeviceFeatures2 &deviceFeatures2, DeviceFeatures2 &enabledFeatures2, const std::vector<vk::ExtensionProperties> &deviceExtensions, std::vector<std::array<char, VK_MAX_EXTENSION_NAME_SIZE>> &enabledExtensions, const DeviceProperties2 &deviceProperties2) {
         bool hasCustomBorderColorExtension{}, hasShaderAtomicInt64{}, hasShaderFloat16Int8Ext{}, hasShaderDemoteToHelper{};
+        bool supportsUniformBufferStandardLayout{}; // We require VK_KHR_uniform_buffer_standard_layout but assume it is implicitly supported even when not present
 
         for (auto &extension : deviceExtensions) {
             #define EXT_SET(name, property)                                                          \
@@ -40,6 +41,7 @@ namespace skyline::gpu {
                 EXT_SET("VK_KHR_shader_atomic_int64", hasShaderAtomicInt64);
                 EXT_SET("VK_KHR_shader_float16_int8", hasShaderFloat16Int8Ext);
                 EXT_SET("VK_KHR_shader_float_controls", supportsFloatControls);
+                EXT_SET("VK_KHR_uniform_buffer_standard_layout", supportsUniformBufferStandardLayout);
             }
 
             #undef EXT_SET
@@ -94,6 +96,14 @@ namespace skyline::gpu {
         else
             enabledFeatures2.unlink<vk::PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT>();
 
+
+        if (supportsUniformBufferStandardLayout) {
+            FEAT_SET(vk::PhysicalDeviceUniformBufferStandardLayoutFeatures, uniformBufferStandardLayout, supportsUniformBufferStandardLayout)
+        }else {
+            enabledFeatures2.unlink<vk::PhysicalDeviceUniformBufferStandardLayoutFeatures>();
+            Logger::Warn("Cannot find VK_KHR_uniform_buffer_standard_layout, assuming implicit support");
+        }
+
         #undef FEAT_SET
 
         if (supportsFloatControls)

app/src/main/cpp/skyline/gpu/quirk_manager.h

@@ -39,7 +39,7 @@ namespace skyline::gpu {
 
         using DeviceProperties2 = vk::StructureChain<vk::PhysicalDeviceProperties2, vk::PhysicalDeviceFloatControlsProperties, vk::PhysicalDeviceSubgroupProperties>;
 
-        using DeviceFeatures2 = vk::StructureChain<vk::PhysicalDeviceFeatures2, vk::PhysicalDeviceCustomBorderColorFeaturesEXT, vk::PhysicalDeviceVertexAttributeDivisorFeaturesEXT, vk::PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT, vk::PhysicalDeviceShaderFloat16Int8Features, vk::PhysicalDeviceShaderAtomicInt64Features>;
+        using DeviceFeatures2 = vk::StructureChain<vk::PhysicalDeviceFeatures2, vk::PhysicalDeviceCustomBorderColorFeaturesEXT, vk::PhysicalDeviceVertexAttributeDivisorFeaturesEXT, vk::PhysicalDeviceShaderDemoteToHelperInvocationFeaturesEXT, vk::PhysicalDeviceShaderFloat16Int8Features, vk::PhysicalDeviceShaderAtomicInt64Features, vk::PhysicalDeviceUniformBufferStandardLayoutFeatures>;
 
         QuirkManager(const DeviceFeatures2 &deviceFeatures2, DeviceFeatures2 &enabledFeatures2, const std::vector<vk::ExtensionProperties> &deviceExtensions, std::vector<std::array<char, VK_MAX_EXTENSION_NAME_SIZE>> &enabledExtensions, const DeviceProperties2 &deviceProperties2);