[vulkan] Adjusted not indexed Quad's handling for QuadStrip + Adjusted Quad's calculations for LUT

src/video_core/renderer_vulkan/vk_buffer_cache.cpp

@@ -231,7 +231,7 @@ public:
         const VkIndexType index_type_ = index_type;
         const size_t sub_first_offset = static_cast<size_t>(first % 4) * GetQuadsNum(num_indices);
         const size_t offset =
-            (sub_first_offset + GetQuadsNum(first)) * 6ULL * BytesPerIndex(index_type);
+            (sub_first_offset + GetFirstOffsetQuads(first)) * 6ULL * BytesPerIndex(index_type);
         scheduler.Record([buffer_ = *buffer, index_type_, offset](vk::CommandBuffer cmdbuf) {
             cmdbuf.BindIndexBuffer(buffer_, offset, index_type_);
         });
@@ -240,6 +240,8 @@ public:
 protected:
     virtual u32 GetQuadsNum(u32 num_indices) const = 0;
 
+    virtual u32 GetFirstOffsetQuads(u32 first) const = 0;
+
     virtual void MakeAndUpdateIndices(u8* staging_data, size_t quad_size, u32 quad, u32 first) = 0;
 
     const Device& device;
@@ -266,6 +268,10 @@ private:
         return num_indices_ / 4;
     }
 
+    u32 GetFirstOffsetQuads(u32 first) const override {
+        return first / 4;
+    }
+
     template <typename T>
     static std::array<T, 6> MakeIndices(u32 quad, u32 first) {
         std::array<T, 6> indices{0, 1, 2, 0, 2, 3};
@@ -306,6 +312,10 @@ private:
         return num_indices_ >= 4 ? (num_indices_ - 2) / 2 : 0;
     }
 
+    u32 GetFirstOffsetQuads(u32 first) const override {
+        return (first / 4) * 2;
+    }
+
     template <typename T>
     static std::array<T, 6> MakeIndices(u32 quad, u32 first) {
         std::array<T, 6> indices{0, 3, 1, 0, 2, 3};