Big code changes

engine/src/buffer.hpp

@@ -0,0 +1,68 @@
+/**
+ * Based on
+ * https://github.com/blurrypiano/littleVulkanEngine/blob/main/src/lve_buffer.hpp
+ */
+#pragma once
+
+#include "device.hpp"
+
+namespace sophia {
+
+class Buffer {
+ public:
+  Buffer(const Buffer&) = delete;
+  Buffer& operator=(const Buffer&) = delete;
+
+  Buffer(Device& device, vk::DeviceSize instanceSize, u32 instanceCount,
+         vk::BufferUsageFlags usageFlags,
+         vk::MemoryPropertyFlags memoryPropertyFlags,
+         vk::DeviceSize minOffsetAlignment = 1);
+  ~Buffer();
+
+  vk::Result map(vk::DeviceSize size = VK_WHOLE_SIZE,
+                 vk::DeviceSize offset = 0);
+  void unmap();
+
+  void writeToBuffer(void* data, vk::DeviceSize size = VK_WHOLE_SIZE,
+                     vk::DeviceSize offset = 0);
+  vk::Result flush(vk::DeviceSize size = VK_WHOLE_SIZE,
+                   vk::DeviceSize offset = 0);
+  vk::DescriptorBufferInfo descriptorInfo(vk::DeviceSize size = VK_WHOLE_SIZE,
+                                          vk::DeviceSize offset = 0);
+  vk::Result invalidate(vk::DeviceSize size = VK_WHOLE_SIZE,
+                        vk::DeviceSize offset = 0);
+
+  void writeToIndex(void* data, int index);
+  vk::Result flushIndex(int index);
+  vk::DescriptorBufferInfo descriptorInfoForIndex(int index);
+  vk::Result invalidateIndex(int index);
+
+  vk::Buffer getBuffer() const { return buffer; }
+  void* getMappedMemory() const { return mapped; }
+  uint32_t getInstanceCount() const { return instanceCount; }
+  vk::DeviceSize getInstanceSize() const { return instanceSize; }
+  vk::DeviceSize getAlignmentSize() const { return instanceSize; }
+  vk::BufferUsageFlags getUsageFlags() const { return usageFlags; }
+  vk::MemoryPropertyFlags getMemoryPropertyFlags() const {
+    return memoryPropertyFlags;
+  }
+  vk::DeviceSize getBufferSize() const { return bufferSize; }
+
+ private:
+  static vk::DeviceSize getAlignment(vk::DeviceSize instanceSize,
+                                     vk::DeviceSize minOffsetAlignment);
+
+  Device& device;
+  void* mapped = nullptr;
+  vk::Buffer buffer = VK_NULL_HANDLE;
+  vk::DeviceMemory memory = VK_NULL_HANDLE;
+
+  vk::DeviceSize bufferSize;
+  uint32_t instanceCount;
+  vk::DeviceSize instanceSize;
+  vk::DeviceSize alignmentSize;
+  vk::BufferUsageFlags usageFlags;
+  vk::MemoryPropertyFlags memoryPropertyFlags;
+};
+
+}  // namespace sophia