Mercurial > games > semicongine

annotate src/semicongine/vulkan/pipeline.nim @ 653:ac7dfbd56cc6

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add: textures now support in shader via scene data, also: improved config handling a bit, more to come
author Sam <sam@basx.dev>
date Sat, 06 May 2023 23:06:33 +0700
parents 43240986f76d
children 1f8612f74fac
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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diff changeset
1 import std/tables
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2 import std/sequtils
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3
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4 import ./api
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5 import ./device
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6 import ./descriptor
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7 import ./shader
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8 import ./buffer
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9 import ./utils
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10 import ./image
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11
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12 import ../gpu_data
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13
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14 type
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15 Pipeline* = object
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16 device*: Device
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17 vk*: VkPipeline
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18 layout*: VkPipelineLayout
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19 shaders*: seq[Shader]
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20 descriptorSetLayout*: DescriptorSetLayout
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21 descriptorPool*: DescriptorPool
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22 descriptorSets*: seq[DescriptorSet]
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24 func inputs*(pipeline: Pipeline): seq[ShaderAttribute] =
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25 for shader in pipeline.shaders:
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26 if shader.stage == VK_SHADER_STAGE_VERTEX_BIT:
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27 return shader.inputs
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29 func uniforms*(pipeline: Pipeline): seq[ShaderAttribute] =
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30 var uniformList: Table[string, ShaderAttribute]
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31 for shader in pipeline.shaders:
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32 for attribute in shader.uniforms:
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33 if attribute.name in uniformList:
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34 assert uniformList[attribute.name] == attribute
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35 else:
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36 uniformList[attribute.name] = attribute
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37 result = uniformList.values.toSeq
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38
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39 proc setupDescriptors*(pipeline: var Pipeline, buffers: seq[Buffer], textures: Table[string, Texture], inFlightFrames: int) =
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40 assert pipeline.vk.valid
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41 assert buffers.len == 0 or buffers.len == inFlightFrames
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42 assert pipeline.descriptorSets.len > 0
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43
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44 for i in 0 ..< inFlightFrames:
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45 var offset = 0'u64
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46 # first descriptor is always uniform for globals, match should be better somehow
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47 assert pipeline.descriptorSets[i].layout.descriptors[0].thetype == Uniform
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48 for descriptor in pipeline.descriptorSets[i].layout.descriptors.mitems:
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49 if descriptor.thetype == Uniform:
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50 let size = VkDeviceSize(descriptor.itemsize * descriptor.count)
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51 descriptor.buffer = buffers[i]
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52 descriptor.offset = offset
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53 descriptor.size = size
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54 offset += size
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55 elif descriptor.thetype == ImageSampler:
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56 if not (descriptor.name in textures):
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57 raise newException(Exception, "Missing shader texture in scene: " & descriptor.name)
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58 descriptor.imageview = textures[descriptor.name].imageView
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59 descriptor.sampler = textures[descriptor.name].sampler
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60
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61 proc createPipeline*(device: Device, renderPass: VkRenderPass, vertexCode: ShaderCode, fragmentCode: ShaderCode, inFlightFrames: int, subpass = 0'u32): Pipeline =
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62 assert renderPass.valid
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63 assert device.vk.valid
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65 var
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66 vertexShader = device.createShaderModule(vertexCode)
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67 fragmentShader = device.createShaderModule(fragmentCode)
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68 assert vertexShader.stage == VK_SHADER_STAGE_VERTEX_BIT
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69 assert fragmentShader.stage == VK_SHADER_STAGE_FRAGMENT_BIT
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70 assert vertexShader.outputs == fragmentShader.inputs
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71 assert vertexShader.uniforms == fragmentShader.uniforms
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72 assert vertexShader.samplers == fragmentShader.samplers
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73
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74 result.device = device
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75 result.shaders = @[vertexShader, fragmentShader]
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76
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77 var descriptors = @[
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78 Descriptor(
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79 name: "Uniforms",
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80 thetype: Uniform,
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81 count: 1,
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82 stages: @[VK_SHADER_STAGE_VERTEX_BIT, VK_SHADER_STAGE_FRAGMENT_BIT],
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83 itemsize: vertexShader.uniforms.size(),
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84 ),
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85 ]
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86 for sampler in vertexShader.samplers:
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87 descriptors.add Descriptor(
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88 name: sampler.name,
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89 thetype: ImageSampler,
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90 count: 1,
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91 stages: @[VK_SHADER_STAGE_VERTEX_BIT, VK_SHADER_STAGE_FRAGMENT_BIT],
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92 itemsize: 0,
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93 )
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94 result.descriptorSetLayout = device.createDescriptorSetLayout(descriptors)
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95
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96 # TODO: Push constants
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97 # var pushConstant = VkPushConstantRange(
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98 # stageFlags: toBits shaderStage,
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99 # offset: 0,
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100 # size: 0,
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101 # )
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102 var descriptorSetLayouts: seq[VkDescriptorSetLayout] = @[result.descriptorSetLayout.vk]
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103 # var pushConstants: seq[VkPushConstantRange] = @[pushConstant]
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104 var pipelineLayoutInfo = VkPipelineLayoutCreateInfo(
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105 sType: VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO,
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106 setLayoutCount: uint32(descriptorSetLayouts.len),
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107 pSetLayouts: descriptorSetLayouts.toCPointer,
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108 # pushConstantRangeCount: uint32(pushConstants.len),
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109 # pPushConstantRanges: pushConstants.toCPointer,
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110 )
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111 checkVkResult vkCreatePipelineLayout(device.vk, addr(pipelineLayoutInfo), nil, addr(result.layout))
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112
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113 var
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114 bindings: seq[VkVertexInputBindingDescription]
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115 attributes: seq[VkVertexInputAttributeDescription]
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116 vertexInputInfo = vertexShader.getVertexInputInfo(bindings, attributes)
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117 inputAssembly = VkPipelineInputAssemblyStateCreateInfo(
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118 sType: VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO,
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119 topology: VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST,
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120 primitiveRestartEnable: VK_FALSE,
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121 )
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122 viewportState = VkPipelineViewportStateCreateInfo(
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123 sType: VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO,
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124 viewportCount: 1,
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125 scissorCount: 1,
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126 )
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127 rasterizer = VkPipelineRasterizationStateCreateInfo(
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128 sType: VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO,
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129 depthClampEnable: VK_FALSE,
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130 rasterizerDiscardEnable: VK_FALSE,
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131 polygonMode: VK_POLYGON_MODE_FILL,
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132 lineWidth: 1.0,
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133 cullMode: toBits [VK_CULL_MODE_BACK_BIT],
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134 frontFace: VK_FRONT_FACE_CLOCKWISE,
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135 depthBiasEnable: VK_FALSE,
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136 depthBiasConstantFactor: 0.0,
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137 depthBiasClamp: 0.0,
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138 depthBiasSlopeFactor: 0.0,
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139 )
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140 multisampling = VkPipelineMultisampleStateCreateInfo(
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141 sType: VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO,
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142 sampleShadingEnable: VK_FALSE,
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143 rasterizationSamples: VK_SAMPLE_COUNT_1_BIT,
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144 minSampleShading: 1.0,
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145 pSampleMask: nil,
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146 alphaToCoverageEnable: VK_FALSE,
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147 alphaToOneEnable: VK_FALSE,
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148 )
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149 colorBlendAttachment = VkPipelineColorBlendAttachmentState(
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150 colorWriteMask: toBits [VK_COLOR_COMPONENT_R_BIT, VK_COLOR_COMPONENT_G_BIT, VK_COLOR_COMPONENT_B_BIT, VK_COLOR_COMPONENT_A_BIT],
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151 blendEnable: VK_TRUE,
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152 srcColorBlendFactor: VK_BLEND_FACTOR_SRC_ALPHA,
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153 dstColorBlendFactor: VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA,
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154 colorBlendOp: VK_BLEND_OP_ADD,
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155 srcAlphaBlendFactor: VK_BLEND_FACTOR_ONE,
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156 dstAlphaBlendFactor: VK_BLEND_FACTOR_ZERO,
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157 alphaBlendOp: VK_BLEND_OP_ADD,
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158 )
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159 colorBlending = VkPipelineColorBlendStateCreateInfo(
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160 sType: VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO,
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161 logicOpEnable: false,
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162 attachmentCount: 1,
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163 pAttachments: addr(colorBlendAttachment),
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164 )
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165 dynamicStates = @[VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR]
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166 dynamicState = VkPipelineDynamicStateCreateInfo(
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167 sType: VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO,
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168 dynamicStateCount: uint32(dynamicStates.len),
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169 pDynamicStates: dynamicStates.toCPointer,
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170 )
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171 stages = @[vertexShader.getPipelineInfo(), fragmentShader.getPipelineInfo()]
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172 createInfo = VkGraphicsPipelineCreateInfo(
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173 sType: VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO,
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174 stageCount: uint32(stages.len),
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175 pStages: stages.toCPointer,
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176 pVertexInputState: addr(vertexInputInfo),
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177 pInputAssemblyState: addr(inputAssembly),
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178 pViewportState: addr(viewportState),
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179 pRasterizationState: addr(rasterizer),
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180 pMultisampleState: addr(multisampling),
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181 pDepthStencilState: nil,
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182 pColorBlendState: addr(colorBlending),
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183 pDynamicState: addr(dynamicState),
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184 layout: result.layout,
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185 renderPass: renderPass,
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186 subpass: subpass,
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187 basePipelineHandle: VkPipeline(0),
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188 basePipelineIndex: -1,
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189 )
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190 checkVkResult vkCreateGraphicsPipelines(
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191 device.vk,
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192 VkPipelineCache(0),
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193 1,
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194 addr(createInfo),
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195 nil,
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196 addr(result.vk)
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197 )
650
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198 var poolsizes = @[(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, uint32(inFlightFrames))]
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199 if vertexShader.samplers.len > 0:
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200 poolsizes.add (VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, uint32(inFlightFrames * vertexShader.samplers.len))
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201
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202 result.descriptorPool = result.device.createDescriptorSetPool(poolsizes)
575
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203 result.descriptorSets = result.descriptorPool.allocateDescriptorSet(result.descriptorSetLayout, inFlightFrames)
583
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204 discard result.uniforms # just for assertion
588
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205
575
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diff changeset
206
560
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207 proc destroy*(pipeline: var Pipeline) =
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208 assert pipeline.device.vk.valid
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209 assert pipeline.vk.valid
561
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210 assert pipeline.layout.valid
566
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211 assert pipeline.descriptorSetLayout.vk.valid
588
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diff changeset
212
569
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diff changeset
213 if pipeline.descriptorPool.vk.valid:
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214 pipeline.descriptorPool.destroy()
589
b434feaf2b67 did: finish refactoring of render pipeline, yipi! :)
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diff changeset
215
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216 for shader in pipeline.shaders.mitems:
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217 shader.destroy()
566
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218 pipeline.descriptorSetLayout.destroy()
561
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diff changeset
219 pipeline.device.vk.vkDestroyPipelineLayout(pipeline.layout, nil)
560
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220 pipeline.device.vk.vkDestroyPipeline(pipeline.vk, nil)
566
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diff changeset
221 pipeline.descriptorSetLayout.reset()
561
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diff changeset
222 pipeline.layout.reset()
560
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223 pipeline.vk.reset()