Mercurial > games > semicongine

annotate src/semicongine/vulkan/buffer.nim @ 113:7b695fb335ed

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did: first final implementation of scene-graph <-> pipeline connection, not working yet
author Sam <sam@basx.dev>
date Sun, 02 Apr 2023 01:22:09 +0700
parents 0c5a74885796
children 056e08dfad10
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1 import std/strformat
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2 import std/typetraits
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3 import std/sequtils
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4 import std/tables
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5
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6 import ./api
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7 import ./device
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8 import ./memory
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9 import ./physicaldevice
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10 import ./commandbuffer
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11
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12 type
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13 Buffer* = object
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14 device*: Device
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15 vk*: VkBuffer
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16 size*: uint64
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17 usage*: seq[VkBufferUsageFlagBits]
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18 case hasMemory*: bool
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19 of false: discard
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20 of true:
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21 memory*: DeviceMemory
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22 data*: pointer
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23
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24 func `$`*(buffer: Buffer): string = &"Buffer(size: {buffer.size}, usage: {buffer.usage})"
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25
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26 proc setData*(dst: Buffer, src: pointer, len: uint64, offset=0'u64) =
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27 assert offset + len <= dst.size
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28 copyMem(cast[pointer](cast[uint64](dst.data) + offset), src, len)
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29
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30 proc setData*[T: seq](dst: Buffer, src: ptr T, offset=0'u64) =
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31 dst.setData(src, sizeof(get(genericParams(T), 0)) * src[].len, offset=offset)
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32
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33 proc setData*[T](dst: Buffer, src: ptr T, offset=0'u64) =
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34 dst.setData(src, sizeof(T), offset=offset)
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35
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36 proc allocateMemory(buffer: var Buffer, flags: openArray[VkMemoryPropertyFlagBits]) =
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37 assert buffer.device.vk.valid
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38 assert buffer.hasMemory == false
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39
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40 buffer.hasMemory = true
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41 buffer.memory = buffer.device.allocate(buffer.size, flags)
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42 checkVkResult buffer.device.vk.vkBindBufferMemory(buffer.vk, buffer.memory.vk, VkDeviceSize(0))
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43 buffer.data = buffer.memory.map()
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44
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45 # currently no support for extended structure and concurrent/shared use
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46 # (shardingMode = VK_SHARING_MODE_CONCURRENT not supported)
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47 proc createBuffer*(
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48 device: Device,
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49 size: uint64,
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50 usage: openArray[VkBufferUsageFlagBits],
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51 flags: openArray[VkBufferCreateFlagBits] = @[],
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52 memoryFlags: openArray[VkMemoryPropertyFlagBits] = @[],
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53 ): Buffer =
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54 assert device.vk.valid
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55 assert size > 0
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56
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57 result.device = device
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58 result.size = size
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59 result.usage = usage.toSeq
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60 var createInfo = VkBufferCreateInfo(
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61 sType: VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO,
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62 flags: toBits(flags),
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63 size: size,
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64 usage: toBits(usage),
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65 sharingMode: VK_SHARING_MODE_EXCLUSIVE,
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66 )
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67
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68 checkVkResult vkCreateBuffer(
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69 device=device.vk,
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70 pCreateInfo=addr createInfo,
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71 pAllocator=nil,
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72 pBuffer=addr result.vk
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73 )
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74 result.allocateMemory(memoryFlags)
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77 proc copy*(src, dst: Buffer) =
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78 assert src.device.vk.valid
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79 assert dst.device.vk.valid
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80 assert src.device == dst.device
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81 assert src.size == dst.size
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82 assert VK_BUFFER_USAGE_TRANSFER_SRC_BIT in src.usage
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83 assert VK_BUFFER_USAGE_TRANSFER_DST_BIT in dst.usage
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84
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85 var queue: Queue
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86 for q in src.device.queues.values:
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87 if q.family.canDoTransfer:
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88 queue = q
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89 if not queue.vk.valid:
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90 raise newException(Exception, "No queue that supports buffer transfer")
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91
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92 var
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93 commandBufferPool = src.device.createCommandBufferPool(family=queue.family, nBuffers=1)
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94 commandBuffer = commandBufferPool.buffers[0]
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95
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96 beginInfo = VkCommandBufferBeginInfo(
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97 sType: VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO,
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98 flags: VkCommandBufferUsageFlags(VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT),
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99 )
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100 copyRegion = VkBufferCopy(size: VkDeviceSize(src.size))
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101 checkVkResult commandBuffer.vkBeginCommandBuffer(addr(beginInfo))
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102 commandBuffer.vkCmdCopyBuffer(src.vk, dst.vk, 1, addr(copyRegion))
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103 checkVkResult commandBuffer.vkEndCommandBuffer()
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104
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105 var submitInfo = VkSubmitInfo(
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106 sType: VK_STRUCTURE_TYPE_SUBMIT_INFO,
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107 commandBufferCount: 1,
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108 pCommandBuffers: addr(commandBuffer),
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109 )
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110 checkVkResult queue.vk.vkQueueSubmit(1, addr(submitInfo), VkFence(0))
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111 checkVkResult queue.vk.vkQueueWaitIdle()
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112 commandBufferPool.destroy()
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113
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114 proc destroy*(buffer: var Buffer) =
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115 assert buffer.device.vk.valid
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116 assert buffer.vk.valid
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117 if buffer.hasMemory:
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118 assert buffer.memory.vk.valid
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119 buffer.memory.free
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120 buffer.device.vk.vkDestroyBuffer(buffer.vk, nil)
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121 buffer.vk.reset()