Created a buffer object. Use the new pipeline bind_vertex to use for verticies

src/vulkan/basalt_buffer.cpp

@@ -0,0 +1,65 @@
+#include "vulkan/basalt_buffer.h"
+
+u32 find_memory_type(basalt::Device* device, u32 type_filter, VkMemoryPropertyFlags props);
+
+basalt::Buffer::Buffer(basalt::Device& device, u64 num_bytes, VkBufferUsageFlagBits usage_flags, VkMemoryPropertyFlags props, VkSharingMode sharing_mode) :
+	device(&device), mapped_ptr(nullptr), size(num_bytes)
+{
+	VkBufferCreateInfo buffer_info{ VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO };
+	buffer_info.pNext = VK_NULL_HANDLE;
+	buffer_info.flags = 0;
+	buffer_info.sharingMode = sharing_mode;
+	buffer_info.usage = usage_flags;
+	buffer_info.size = num_bytes;
+
+	VkResult err = VK_SUCCESS;
+	VK_ASSERT(vkCreateBuffer(device, &buffer_info, device.ctx->vk_alloc, &buffer), "Failed to create buffer\n\tAt %s:%d\n\tError %s\n");
+
+	VkMemoryRequirements mem_reqs;
+	vkGetBufferMemoryRequirements(device, buffer, &mem_reqs);
+	// Determine best device allocation region
+	u32 mem_type = find_memory_type(&device, mem_reqs.memoryTypeBits, props);
+	BASSERT_FATAL(mem_type != -1, "Assertion %s failed at %s:%d\n\tFailed to find a memory region that supports the requested type and properties\n");
+
+	// Allocate the memory
+	VkMemoryAllocateInfo alloc_info{VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO};
+	alloc_info.pNext = VK_NULL_HANDLE;
+	alloc_info.allocationSize = mem_reqs.size;
+	alloc_info.memoryTypeIndex = mem_type;
+	VK_ASSERT(vkAllocateMemory(device, &alloc_info, device.ctx->vk_alloc, &memory), "Failed to allocate memory for buffer\n\tAt %s:%d\n\tError %s\n");
+	VK_ASSERT(vkBindBufferMemory(device, buffer, memory, 0), "Failed to bind memory for buffer\n\tAt %s:%d\n\tError %s\n");
+}
+
+basalt::Buffer::~Buffer()
+{
+	vkDestroyBuffer(device->logical, buffer, device->ctx->vk_alloc);
+	vkFreeMemory(device->logical, memory, device->ctx->vk_alloc);
+}
+
+void* basalt::Buffer::map()
+{
+	if (this->mapped_ptr != nullptr)
+		return this->mapped_ptr;
+	VkResult err = vkMapMemory(device->logical, memory, 0, size, 0, &mapped_ptr);
+	BASSERT_ERROR(err == VK_SUCCESS, this->mapped_ptr = nullptr;, "Failed to map buffer to host memory\n\tAt %s:%d\n\tError %s\n");
+	return this->mapped_ptr;
+}
+
+void basalt::Buffer::unmap()
+{
+	vkUnmapMemory(device->logical, memory);
+	this->mapped_ptr = nullptr;
+}
+
+
+u32 find_memory_type(basalt::Device* device, u32 type_filter, VkMemoryPropertyFlags props)
+{
+	VkPhysicalDeviceMemoryProperties& dev_props = device->phys->memory_props;
+	for (u32 i = 0; i < dev_props.memoryTypeCount; ++i)
+	{
+		if ((type_filter & (1 << i))&&
+			(dev_props.memoryTypes[i].propertyFlags & props) == props)
+			return i;
+	}
+	return -1;
+}