[vulkan] Added flag to detect last mode from provokingVertex

src/video_core/renderer_vulkan/vk_graphics_pipeline.cpp

@@ -795,7 +795,8 @@ void GraphicsPipeline::MakePipeline(VkRenderPass render_pass) {
     const bool preserve_provoking_vertex_for_xfb =
         !key.state.xfb_enabled || device.IsTransformFeedbackProvokingVertexPreserved();
     const bool use_last_provoking_vertex =
-        key.state.provoking_vertex_last != 0 && preserve_provoking_vertex_for_xfb;
+        key.state.provoking_vertex_last != 0 && preserve_provoking_vertex_for_xfb &&
+        device.IsProvokingVertexLastSupported();
 
     VkPipelineRasterizationProvokingVertexStateCreateInfoEXT provoking_vertex{
         .sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_PROVOKING_VERTEX_STATE_CREATE_INFO_EXT,

src/video_core/vulkan_common/vulkan_device.h

@@ -700,6 +700,11 @@ public:
         return extensions.provoking_vertex;
     }
 
+    /// Returns true if the device supports provoking-vertex LAST mode.
+    bool IsProvokingVertexLastSupported() const {
+        return features.provoking_vertex.provokingVertexLast;
+    }
+
     /// Returns true if the device supports VK_KHR_shader_atomic_int64.
     bool IsExtShaderAtomicInt64Supported() const {
         return extensions.shader_atomic_int64;