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#pragma once
#include "rend_internal.h"
#include "rend_vk_internal.h"
#include <vulkan/vulkan_core.h>
#if 0
static RendVkMemory
rend_vk_memory_malloc(size_t size, VkDevice logical_device, VkPhysicalDevice physical_device, uint32_t heap_index, VkAllocationCallbacks *allocator)
{
RendVkMemory memory = {
.host_mapped_memory = NULL,
.device_memory = 0,
.logical_device = logical_device,
.heap_index = heap_index
};
VkMemoryAllocateFlagsInfo flags_info = {
.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_FLAGS_INFO,
.pNext = NULL,
.flags = VK_MEMORY_ALLOCATE_DEVICE_ADDRESS_BIT, /* REQUIRED for BDA buffers */
.deviceMask = 0
};
VkMemoryAllocateInfo alloc_info = {
.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO,
.allocationSize = size,
.pNext = &flags_info,
.memoryTypeIndex = heap_index
};
vkAllocateMemory(logical_device, &alloc_info, allocator, &memory.device_memory);
return memory;
}
static void
rend_vk_memory_free(RendVkMemory *memory)
{
if (memory->host_mapped_memory) {
rend_vk_memory_unmap(memory);
}
if (memory->offset == 0) {
vkFreeMemory(memory->logical_device, memory->device_memory, memory->allocator);
memset(memory, 0, sizeof *memory);
} else {
PWARN("[REND_VK] Attempted to free memory with an offset!");
}
}
static void*
rend_vk_memory_map(RendVkMemory *memory)
{
// SPEC: memory must have been created with a memory type that reports VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT
// vkMapMemory will fail if the implementation is unable to allocate an appropriately sized contiguous virtual address range,
// e.g. due to virtual address space fragmentation or platform limits.
// In such cases, vkMapMemory must return VK_ERROR_MEMORY_MAP_FAILED.
// The application can improve the likelihood of success by reducing the size of the mapped range and/or removing unneeded mappings using vkUnmapMemory.
vkMapMemory(memory->logical_device, memory->device_memory, memory->offset, memory->size, 0, &memory->host_mapped_memory);
return memory->host_mapped_memory;
}
static void
rend_vk_memory_unmap(RendVkMemory *memory)
{
if (memory->offset == 0) {
vkUnmapMemory(memory->logical_device, memory->device_memory);
memory->host_mapped_memory = 0;
} else {
PWARN("[REND_VK] Attempted to unmap memory with an offset!");
}
}
static void
rend_vk_memory_copy(RendVkMemory *memory, size_t offset, const void *data, size_t size)
{
/* bounds check */
if (offset + size > memory->size) {
REND__WARN("Memory write out of bounds!");
return;
}
/* important to cast this */
uint8_t *dest = memory->host_mapped_memory;
memcpy(dest + offset, data, size);
/* flush host writes if memory is non-coherent */
// VkMappedMemoryRange range = {
// .sType = VK_STRUCTURE_TYPE_MAPPED_MEMORY_RANGE,
// .memory = memory->device_memory,
// .offset = offset,
// .size = size
// };
//
// vkFlushMappedMemoryRanges(memory->logical_device, 1, &range);
}
#endif
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