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#include "vkvg_buff.h"
#include "vkvg_device_internal.h"
void _set_size_and_map(VkvgDevice pDev, VkBufferUsageFlags usage, VkMemoryPropertyFlags memoryPropertyFlags, VkDeviceSize size, vkvg_buff *buff){
VkMemoryRequirements memReq;
vkGetBufferMemoryRequirements(pDev->vkDev, buff->buffer, &memReq);
VkMemoryAllocateInfo memAllocInfo = { .sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO,
.allocationSize = memReq.size };
assert(memory_type_from_properties(&pDev->phyMemProps, memReq.memoryTypeBits,memoryPropertyFlags, &memAllocInfo.memoryTypeIndex));
VK_CHECK_RESULT(vkAllocateMemory(pDev->vkDev, &memAllocInfo, NULL, &buff->memory));
buff->alignment = memReq.alignment;
buff->size = memAllocInfo.allocationSize;
buff->usageFlags = usage;
buff->memoryPropertyFlags = memoryPropertyFlags;
VK_CHECK_RESULT(vkBindBufferMemory(buff->pDev->vkDev, buff->buffer, buff->memory, 0));
VK_CHECK_RESULT(vkMapMemory(buff->pDev->vkDev, buff->memory, 0, VK_WHOLE_SIZE, 0, &buff->mapped));
}
void vkvg_buffer_create(VkvgDevice pDev, VkBufferUsageFlags usage, VkMemoryPropertyFlags memoryPropertyFlags, VkDeviceSize size, vkvg_buff *buff){
buff->pDev = pDev;
VkBufferCreateInfo bufCreateInfo = {
.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO,
.usage = usage, .size = size, .sharingMode = VK_SHARING_MODE_EXCLUSIVE};
VK_CHECK_RESULT(vkCreateBuffer(pDev->vkDev, &bufCreateInfo, NULL, &buff->buffer));
_set_size_and_map(pDev,usage,memoryPropertyFlags,size,buff);
}
void vkvg_buffer_destroy(vkvg_buff *buff){
vkUnmapMemory (buff->pDev->vkDev, buff->memory);
vkDestroyBuffer (buff->pDev->vkDev, buff->buffer, NULL);
vkFreeMemory (buff->pDev->vkDev, buff->memory, NULL);
}
void vkvg_buffer_increase_size(vkvg_buff *buff, uint32_t sizeAdded){
size_t oldBSize = buff->size;
void* pSave = (void*)malloc (oldBSize);
memcpy (pSave, buff->mapped, oldBSize);
vkvg_buffer_destroy(buff);
vkvg_buffer_create(buff->pDev, buff->usageFlags, buff->memoryPropertyFlags, oldBSize + sizeAdded, buff);
memcpy (buff->mapped, pSave, oldBSize);
free(pSave);
}
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