Mercurial > games > semicongine

annotate semiconginev2/old/vulkan/buffer.nim @ 1220:59e683c4728f compiletime-tests

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del: outdated examples
author sam <sam@basx.dev>
date Wed, 17 Jul 2024 21:04:09 +0700
parents 56781cc0fc7c
children
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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 import std/logging
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6
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7 import ../core
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8 import ./device
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9 import ./memory
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10 import ./physicaldevice
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11 import ./commandbuffer
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12
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13 type
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14 Buffer* = object
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15 device*: Device
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16 vk*: VkBuffer
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17 size*: uint64
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18 usage*: seq[VkBufferUsageFlagBits]
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19 case memoryAllocated*: bool
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20 of false: discard
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21 of true:
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22 memory*: DeviceMemory
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23
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24
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25 proc `==`*(a, b: Buffer): bool =
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26 a.vk == b.vk
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27
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28 func `$`*(buffer: Buffer): string =
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29 &"Buffer(vk: {buffer.vk}, size: {buffer.size}, usage: {buffer.usage})"
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30
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31 proc requirements(buffer: Buffer): MemoryRequirements =
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32 assert buffer.vk.Valid
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33 assert buffer.device.vk.Valid
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34 var req: VkMemoryRequirements
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35 buffer.device.vk.vkGetBufferMemoryRequirements(buffer.vk, addr req)
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36 result.size = req.size
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37 result.alignment = req.alignment
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38 let memorytypes = buffer.device.physicaldevice.vk.GetMemoryProperties().types
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39 for i in 0 ..< sizeof(req.memoryTypeBits) * 8:
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40 if ((req.memoryTypeBits shr i) and 1) == 1:
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41 result.memoryTypes.add memorytypes[i]
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42
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43 proc allocateMemory(buffer: var Buffer, requireMappable: bool, preferVRAM: bool, preferAutoFlush: bool) =
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44 assert buffer.device.vk.Valid
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45 assert buffer.memoryAllocated == false
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46
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47 let requirements = buffer.requirements()
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48 let memoryType = requirements.memoryTypes.SelectBestMemoryType(
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49 requireMappable = requireMappable,
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50 preferVRAM = preferVRAM,
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51 preferAutoFlush = preferAutoFlush
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52 )
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53
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54 debug "Allocating memory for buffer: ", buffer.size, " bytes of type ", memoryType
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55 # need to replace the whole buffer object, due to case statement
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56 buffer = Buffer(
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57 device: buffer.device,
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58 vk: buffer.vk,
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59 size: buffer.size,
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60 usage: buffer.usage,
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61 memoryAllocated: true,
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62 memory: buffer.device.Allocate(requirements.size, memoryType)
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63 )
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64 checkVkResult buffer.device.vk.vkBindBufferMemory(buffer.vk, buffer.memory.vk, VkDeviceSize(0))
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65
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66 # currently no support for extended structure and concurrent/shared use
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67 # (shardingMode = VK_SHARING_MODE_CONCURRENT not supported)
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68 proc CreateBuffer*(
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69 device: Device,
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70 size: uint64,
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71 usage: openArray[VkBufferUsageFlagBits],
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72 requireMappable: bool,
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73 preferVRAM: bool,
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74 preferAutoFlush = true,
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75 ): Buffer =
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76 assert device.vk.Valid
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77 assert size > 0
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78
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79 result.device = device
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80 result.size = size
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81 result.usage = usage.toSeq
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82 if not requireMappable:
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83 result.usage.add VK_BUFFER_USAGE_TRANSFER_DST_BIT
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84 var createInfo = VkBufferCreateInfo(
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85 sType: VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO,
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86 flags: VkBufferCreateFlags(0),
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87 size: size,
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88 usage: toBits(result.usage),
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89 sharingMode: VK_SHARING_MODE_EXCLUSIVE,
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90 )
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91
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92 checkVkResult vkCreateBuffer(
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93 device = device.vk,
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94 pCreateInfo = addr createInfo,
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95 pAllocator = nil,
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96 pBuffer = addr result.vk
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97 )
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98 result.allocateMemory(requireMappable = requireMappable, preferVRAM = preferVRAM, preferAutoFlush = preferAutoFlush)
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99
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100
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101 proc Copy*(src, dst: Buffer, queue: Queue, dstOffset = 0'u64) =
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102 assert src.device.vk.Valid
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103 assert dst.device.vk.Valid
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104 assert src.device == dst.device
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105 assert src.size + dstOffset <= dst.size
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106 assert VK_BUFFER_USAGE_TRANSFER_SRC_BIT in src.usage
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107 assert VK_BUFFER_USAGE_TRANSFER_DST_BIT in dst.usage
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108
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109 var copyRegion = VkBufferCopy(size: VkDeviceSize(src.size), dstOffset: VkDeviceSize(dstOffset))
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110 WithSingleUseCommandBuffer(src.device, queue, commandBuffer):
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111 commandBuffer.vkCmdCopyBuffer(src.vk, dst.vk, 1, addr(copyRegion))
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112
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113 proc Destroy*(buffer: var Buffer) =
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114 assert buffer.device.vk.Valid
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115 assert buffer.vk.Valid
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116 buffer.device.vk.vkDestroyBuffer(buffer.vk, nil)
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117 if buffer.memoryAllocated:
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118 assert buffer.memory.vk.Valid
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119 buffer.memory.Free()
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120 buffer = Buffer(
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121 device: buffer.device,
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122 vk: buffer.vk,
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123 size: buffer.size,
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124 usage: buffer.usage,
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125 memoryAllocated: false,
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126 )
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127 buffer.vk.Reset
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128
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129 template CanMap*(buffer: Buffer): bool =
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130 buffer.memory.canMap
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131
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132 proc SetData*(dst: Buffer, queue: Queue, src: pointer, size: uint64, bufferOffset = 0'u64) =
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133 assert bufferOffset + size <= dst.size
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134 if dst.CanMap:
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135 copyMem(cast[pointer](cast[uint](dst.memory.data) + bufferOffset), src, size)
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136 if dst.memory.needsFlushing:
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137 dst.memory.Flush()
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138 else: # use staging buffer, slower but required if memory is not host visible
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139 var stagingBuffer = dst.device.CreateBuffer(size, [VK_BUFFER_USAGE_TRANSFER_SRC_BIT], requireMappable = true, preferVRAM = false, preferAutoFlush = true)
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140 SetData(stagingBuffer, queue, src, size, 0)
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141 stagingBuffer.Copy(dst, queue, bufferOffset)
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142 stagingBuffer.Destroy()
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143
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144 proc SetData*[T: seq](dst: Buffer, queue: Queue, src: ptr T, offset = 0'u64) =
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145 dst.setData(queue, src, sizeof(get(genericParams(T), 0)) * src[].len, offset = offset)
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146
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147 proc SetData*[T](dst: Buffer, queue: Queue, src: ptr T, offset = 0'u64) =
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148 dst.setData(queue, src, sizeof(T), offset = offset)
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149