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https://github.com/w23/xash3d-fwgs
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34 lines
1.1 KiB
C
34 lines
1.1 KiB
C
#pragma once
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#include "vk_core.h"
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qboolean createBuffer(vk_buffer_t *buf, uint32_t size, VkBufferUsageFlags usage, VkMemoryPropertyFlags flags);
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void destroyBuffer(vk_buffer_t *buf);
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// v -- begin of ring buffer|permanent_size
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// |XXXMAPLIFETME|<......|FRAME1|FRAME2|FRAMEN|......................>|
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// busy pos - ^ ^ ^ ^ -- write pos | offset_free
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typedef struct {
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uint32_t size;
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uint32_t permanent_size;
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uint32_t offset_free;
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uint32_t free;
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// TODO per-frame offsets for many frames in flight
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} vk_ring_buffer_t;
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enum { AllocFailed = 0xffffffffu };
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// Marks the entire buffer as free
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void VK_RingBuffer_Clear(vk_ring_buffer_t* buf);
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// Allocates a new aligned region and returns offset to it (-1 if allocation failed)
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uint32_t VK_RingBuffer_Alloc(vk_ring_buffer_t* buf, uint32_t size, uint32_t align);
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// Fixes everything that has been allocated since Clear as permanent, ring buffer will operate on the remainder only
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// Can be called only once since Clear
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void VK_RingBuffer_Fix(vk_ring_buffer_t* buf);
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// Clears non-permantent part of the buffer
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void VK_RingBuffer_ClearFrame(vk_ring_buffer_t* buf);
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