vkBindBufferMemory

函数原型

VkResult vkBindBufferMemory(
    VkDevice                                    device,
    VkBuffer                                    buffer,
    VkDeviceMemory                              memory,
    VkDeviceSize                                memoryOffset);

描述

将显存绑定到buffer对象。

参数

• device : buffer和memory所在的逻辑设备。
• buffer : 将要绑定memory的buffer对象。
• memory : VkDeviceMemory对象,描述了要绑定的设备内存。
• memoryOffset : 绑定的内存起始偏移量。

返回值

• VK_SUCCESS : 成功绑定memory到buffer。
• 其他 : 绑定失败。

代码示例

void CreateBuffer(VkDeviceSize size, VkDevice device, VkBuffer& buffer, VkDeviceMemory& bufferMemory)
{
	VkBufferCreateInfo bufferInfo{};
	bufferInfo.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
	bufferInfo.size = size;
	bufferInfo.usage = VK_BUFFER_USAGE_TRANSFER_SRC_BIT;
	bufferInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;

	if (vkCreateBuffer(device, &bufferInfo, nullptr, &buffer) != VK_SUCCESS) {
		throw std::runtime_error("failed to create buffer!");
	}
		
	VkMemoryRequirements memRequirements;
	vkGetBufferMemoryRequirements(device, buffer, &memRequirements);

	VkMemoryAllocateInfo allocInfo{};
	allocInfo.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
	allocInfo.allocationSize = memRequirements.size;
	allocInfo.memoryTypeIndex = 0;

	if (vkAllocateMemory(device, &allocInfo, nullptr, &bufferMemory) != VK_SUCCESS) {
		throw std::runtime_error("failed to allocate buffer memory!");
	}

	vkBindBufferMemory(device, buffer, bufferMemory, 0);
}