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annotate src/zamikongine/buffer.nim @ 29:da922b506570

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add: corret make dependencies
author Sam <sam@basx.dev>
date Sat, 14 Jan 2023 14:08:23 +0700
parents b1b05d4efb52
children 9edca5dc4e93
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1 import ./vulkan
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2 import ./vulkan_helpers
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3
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4 type
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5 BufferType* = enum
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6 None = 0
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7 TransferSrc = VK_BUFFER_USAGE_TRANSFER_SRC_BIT
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8 TransferDst = VK_BUFFER_USAGE_TRANSFER_DST_BIT
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9 UniformBuffer = VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT
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10 IndexBuffer = VK_BUFFER_USAGE_INDEX_BUFFER_BIT
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11 VertexBuffer = VK_BUFFER_USAGE_VERTEX_BUFFER_BIT
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12 Buffer* = object
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13 device*: VkDevice
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14 vkBuffer*: VkBuffer
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15 size*: uint64
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16 memoryRequirements*: VkMemoryRequirements
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17 memory*: VkDeviceMemory
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18 bufferTypes*: set[BufferType]
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19 persistentMapping: bool
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20 mapped: pointer
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21
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22 proc trash*(buffer: var Buffer) =
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23 assert int64(buffer.vkBuffer) != 0
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24 assert int64(buffer.memory) != 0
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25 vkDestroyBuffer(buffer.device, buffer.vkBuffer, nil)
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26 buffer.vkBuffer = VkBuffer(0)
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27 vkFreeMemory(buffer.device, buffer.memory, nil)
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28 buffer.memory = VkDeviceMemory(0)
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29
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30 proc findMemoryType(buffer: Buffer, physicalDevice: VkPhysicalDevice, properties: VkMemoryPropertyFlags): uint32 =
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31 var physicalProperties: VkPhysicalDeviceMemoryProperties
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32 vkGetPhysicalDeviceMemoryProperties(physicalDevice, addr(physicalProperties))
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34 for i in 0'u32 ..< physicalProperties.memoryTypeCount:
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35 if bool(buffer.memoryRequirements.memoryTypeBits and (1'u32 shl i)) and (uint32(physicalProperties.memoryTypes[i].propertyFlags) and uint32(properties)) == uint32(properties):
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36 return i
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37
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38 proc InitBuffer*(
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39 device: VkDevice,
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40 physicalDevice: VkPhysicalDevice,
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41 size: uint64,
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42 bufferTypes: set[BufferType],
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43 properties: set[VkMemoryPropertyFlagBits],
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44 persistentMapping: bool = false
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45 ): Buffer =
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46 result = Buffer(device: device, size: size, bufferTypes: bufferTypes, persistentMapping: persistentMapping)
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47 var usageFlags = 0
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48 for usage in bufferTypes:
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49 usageFlags = ord(usageFlags) or ord(usage)
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50 var bufferInfo = VkBufferCreateInfo(
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51 sType: VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO,
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52 size: VkDeviceSize(result.size),
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53 usage: VkBufferUsageFlags(usageFlags),
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54 sharingMode: VK_SHARING_MODE_EXCLUSIVE,
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55 )
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56 checkVkResult vkCreateBuffer(result.device, addr(bufferInfo), nil, addr(result.vkBuffer))
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57 vkGetBufferMemoryRequirements(result.device, result.vkBuffer, addr(result.memoryRequirements))
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58
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59 var memoryProperties = 0'u32
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60 for prop in properties:
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61 memoryProperties = memoryProperties or uint32(prop)
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62
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63 var allocInfo = VkMemoryAllocateInfo(
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64 sType: VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO,
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65 allocationSize: result.memoryRequirements.size,
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66 memoryTypeIndex: result.findMemoryType(physicalDevice, VkMemoryPropertyFlags(memoryProperties))
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67 )
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68 checkVkResult result.device.vkAllocateMemory(addr(allocInfo), nil, addr(result.memory))
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69 checkVkResult result.device.vkBindBufferMemory(result.vkBuffer, result.memory, VkDeviceSize(0))
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70 if persistentMapping:
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71 checkVkResult vkMapMemory(
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72 result.device,
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73 result.memory,
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74 offset=VkDeviceSize(0),
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75 VkDeviceSize(result.size),
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76 VkMemoryMapFlags(0),
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77 addr(result.mapped)
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78 )
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79
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80
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81 template withMapping*(buffer: Buffer, data: pointer, body: untyped): untyped =
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82 assert not buffer.persistentMapping
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83 checkVkResult vkMapMemory(buffer.device, buffer.memory, offset=VkDeviceSize(0), VkDeviceSize(buffer.size), VkMemoryMapFlags(0), addr(data))
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84 body
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85 vkUnmapMemory(buffer.device, buffer.memory)
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86
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87 # note: does not work with seq
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88 proc updateData*[T](buffer: Buffer, data: var T) =
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89 if buffer.persistentMapping:
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90 copyMem(buffer.mapped, addr(data), sizeof(T))
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91 else:
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92 var p: pointer
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93 buffer.withMapping(p):
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94 copyMem(p, addr(data), sizeof(T))
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95
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96 proc copyBuffer*(commandPool: VkCommandPool, queue: VkQueue, src, dst: Buffer, size: uint64) =
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97 assert uint64(src.device) == uint64(dst.device)
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98 var
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99 allocInfo = VkCommandBufferAllocateInfo(
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100 sType: VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO,
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101 level: VK_COMMAND_BUFFER_LEVEL_PRIMARY,
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102 commandPool: commandPool,
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103 commandBufferCount: 1,
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104 )
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105 commandBuffer: VkCommandBuffer
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106 checkVkResult vkAllocateCommandBuffers(src.device, addr(allocInfo), addr(commandBuffer))
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107
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108 var beginInfo = VkCommandBufferBeginInfo(
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109 sType: VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO,
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110 flags: VkCommandBufferUsageFlags(VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT),
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111 )
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112 checkVkResult vkBeginCommandBuffer(commandBuffer, addr(beginInfo))
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113 var copyRegion = VkBufferCopy(size: VkDeviceSize(size))
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114 vkCmdCopyBuffer(commandBuffer, src.vkBuffer, dst.vkBuffer, 1, addr(copyRegion))
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115 checkVkResult vkEndCommandBuffer(commandBuffer)
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116
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117 var submitInfo = VkSubmitInfo(
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118 sType: VK_STRUCTURE_TYPE_SUBMIT_INFO,
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119 commandBufferCount: 1,
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120 pCommandBuffers: addr(commandBuffer),
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121 )
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122
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123 checkVkResult vkQueueSubmit(queue, 1, addr(submitInfo), VkFence(0))
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124 checkVkResult vkQueueWaitIdle(queue)
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125 vkFreeCommandBuffers(src.device, commandPool, 1, addr(commandBuffer))