95 lines
2.8 KiB
C
95 lines
2.8 KiB
C
#include "vk_buffer.h"
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#include <memory.h>
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qboolean createBuffer(const char *debug_name, vk_buffer_t *buf, uint32_t size, VkBufferUsageFlags usage, VkMemoryPropertyFlags flags)
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{
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VkBufferCreateInfo bci = {
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.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO,
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.size = size,
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.usage = usage,
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.sharingMode = VK_SHARING_MODE_EXCLUSIVE,
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};
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VkMemoryRequirements memreq;
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XVK_CHECK(vkCreateBuffer(vk_core.device, &bci, NULL, &buf->buffer));
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SET_DEBUG_NAME(buf->buffer, VK_OBJECT_TYPE_BUFFER, debug_name);
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vkGetBufferMemoryRequirements(vk_core.device, buf->buffer, &memreq);
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gEngine.Con_Reportf("memreq: memoryTypeBits=0x%x alignment=%zu size=%zu\n", memreq.memoryTypeBits, memreq.alignment, memreq.size);
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buf->device_memory = allocateDeviceMemory(memreq, flags, usage & VK_BUFFER_USAGE_SHADER_DEVICE_ADDRESS_BIT ? VK_MEMORY_ALLOCATE_DEVICE_ADDRESS_BIT : 0);
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XVK_CHECK(vkBindBufferMemory(vk_core.device, buf->buffer, buf->device_memory.device_memory, buf->device_memory.offset));
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// FIXME when there are many allocation per VkDeviceMemory, fix this
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if (VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT & flags)
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XVK_CHECK(vkMapMemory(vk_core.device, buf->device_memory.device_memory, 0, bci.size, 0, &buf->mapped));
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buf->size = size;
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return true;
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}
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void destroyBuffer(vk_buffer_t *buf) {
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// FIXME when there are many allocation per VkDeviceMemory, fix this
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if (buf->buffer)
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{
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vkDestroyBuffer(vk_core.device, buf->buffer, NULL);
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buf->buffer = VK_NULL_HANDLE;
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}
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if (buf->device_memory.device_memory)
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{
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if (buf->mapped)
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vkUnmapMemory(vk_core.device, buf->device_memory.device_memory);
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freeDeviceMemory(&buf->device_memory);
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buf->device_memory.device_memory = VK_NULL_HANDLE;
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buf->device_memory.offset = 0;
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buf->mapped = 0;
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buf->size = 0;
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}
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}
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void VK_RingBuffer_Clear(vk_ring_buffer_t* buf) {
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buf->offset_free = 0;
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buf->permanent_size = 0;
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buf->free = buf->size;
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}
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// < v->
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// |MAP|.........|FRAME|...|
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// ^ XXXXX
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uint32_t VK_RingBuffer_Alloc(vk_ring_buffer_t* buf, uint32_t size, uint32_t align) {
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uint32_t offset = ALIGN_UP(buf->offset_free, align);
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const uint32_t align_diff = offset - buf->offset_free;
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uint32_t available = buf->free - align_diff;
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const uint32_t tail = buf->size - offset;
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if (available < size)
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return AllocFailed;
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if (size > tail) {
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offset = ALIGN_UP(buf->permanent_size, align);
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available -= (offset - buf->permanent_size) - tail;
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}
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if (available < size)
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return AllocFailed;
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buf->offset_free = offset + size;
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buf->free = available - size;
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return offset;
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}
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void VK_RingBuffer_Fix(vk_ring_buffer_t* buf) {
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ASSERT(buf->permanent_size == 0);
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buf->permanent_size = buf->offset_free;
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}
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void VK_RingBuffer_ClearFrame(vk_ring_buffer_t* buf) {
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buf->offset_free = buf->permanent_size;
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buf->free = buf->size - buf->permanent_size;
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}
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