Mercurial > games > semicongine

annotate semicongine/vulkan/pipeline.nim @ 1167:cdf7ec8d04d2

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add: MSAA, yipieee
author sam <sam@basx.dev>
date Tue, 25 Jun 2024 20:24:38 +0700
parents 114f395b9144
children
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rev   line source
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1 import std/tables
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2 import std/sequtils
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3 import std/strformat
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4
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5 import ../core
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6 import ./device
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7 import ./descriptor
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8 import ./shader
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9 import ./buffer
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10 import ./image
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11
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12 type
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13 ShaderPipeline* = object
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14 device*: Device
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15 vk*: VkPipeline
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16 layout*: VkPipelineLayout
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17 shaderConfiguration*: ShaderConfiguration
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18 shaderModules*: (ShaderModule, ShaderModule)
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19 descriptorSetLayout*: DescriptorSetLayout
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20
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21 func Inputs*(pipeline: ShaderPipeline): seq[ShaderAttribute] =
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22 pipeline.shaderConfiguration.inputs
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23
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24 func Uniforms*(pipeline: ShaderPipeline): seq[ShaderAttribute] =
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25 pipeline.shaderConfiguration.uniforms
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26
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27 func Samplers*(pipeline: ShaderPipeline): seq[ShaderAttribute] =
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28 pipeline.shaderConfiguration.samplers
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29
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30 proc SetupDescriptors*(pipeline: ShaderPipeline, descriptorPool: DescriptorPool, buffers: seq[Buffer], textures: var Table[string, seq[VulkanTexture]], inFlightFrames: int, emptyTexture: VulkanTexture): seq[DescriptorSet] =
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31 assert pipeline.vk.Valid
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32 assert buffers.len == 0 or buffers.len == inFlightFrames # need to guard against this in case we have no uniforms, then we also create no buffers
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33
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34 result = descriptorPool.AllocateDescriptorSet(pipeline.descriptorSetLayout, inFlightFrames)
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35
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36 for i in 0 ..< inFlightFrames:
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37 var offset = 0'u64
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38 # first descriptor is always uniform for globals, match should be better somehow
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39 for descriptor in result[i].layout.descriptors.mitems:
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40 if descriptor.thetype == Uniform and buffers.len > 0:
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41 let size = descriptor.size
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42 descriptor.buffer = buffers[i]
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43 descriptor.offset = offset
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44 descriptor.size = size
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45 offset += size
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46 elif descriptor.thetype == ImageSampler:
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47 if not (descriptor.name in textures):
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48 raise newException(Exception, &"Missing shader texture in scene: {descriptor.name}, available are {textures.keys.toSeq}")
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49
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50 for textureIndex in 0 ..< int(descriptor.count):
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51 if textureIndex < textures[descriptor.name].len:
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52 descriptor.imageviews.add textures[descriptor.name][textureIndex].imageView
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53 descriptor.samplers.add textures[descriptor.name][textureIndex].sampler
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54 else:
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55 descriptor.imageviews.add emptyTexture.imageView
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56 descriptor.samplers.add emptyTexture.sampler
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57
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58 proc CreatePipeline*(device: Device, renderPass: VkRenderPass, shaderConfiguration: ShaderConfiguration, inFlightFrames: int, subpass = 0'u32, backFaceCulling = true, samples = VK_SAMPLE_COUNT_1_BIT): ShaderPipeline =
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59 assert renderPass.Valid
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60 assert device.vk.Valid
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61
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62 result.device = device
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63 result.shaderModules = device.CreateShaderModules(shaderConfiguration)
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64 result.shaderConfiguration = shaderConfiguration
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65
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66 var descriptors: seq[Descriptor]
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67 if result.shaderConfiguration.uniforms.len > 0:
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68 descriptors.add Descriptor(
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69 name: "Uniforms",
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70 thetype: Uniform,
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71 count: 1,
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72 stages: @[VK_SHADER_STAGE_VERTEX_BIT, VK_SHADER_STAGE_FRAGMENT_BIT],
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73 size: result.shaderConfiguration.uniforms.Size(),
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74 )
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75 for sampler in result.shaderConfiguration.samplers:
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76 descriptors.add Descriptor(
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77 name: sampler.name,
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78 thetype: ImageSampler,
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79 count: (if sampler.arrayCount == 0: 1 else: sampler.arrayCount),
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80 stages: @[VK_SHADER_STAGE_VERTEX_BIT, VK_SHADER_STAGE_FRAGMENT_BIT],
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81 )
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82 result.descriptorSetLayout = device.CreateDescriptorSetLayout(descriptors)
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83
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84 # TODO: Push constants
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85 # var pushConstant = VkPushConstantRange(
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86 # stageFlags: toBits shaderStage,
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87 # offset: 0,
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88 # size: 0,
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89 # )
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90 var descriptorSetLayouts: seq[VkDescriptorSetLayout] = @[result.descriptorSetLayout.vk]
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91 # var pushConstants: seq[VkPushConstantRange] = @[pushConstant]
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92 var pipelineLayoutInfo = VkPipelineLayoutCreateInfo(
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93 sType: VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO,
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94 setLayoutCount: uint32(descriptorSetLayouts.len),
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95 pSetLayouts: descriptorSetLayouts.ToCPointer,
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96 # pushConstantRangeCount: uint32(pushConstants.len),
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97 # pPushConstantRanges: pushConstants.ToCPointer,
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98 )
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99 checkVkResult vkCreatePipelineLayout(device.vk, addr(pipelineLayoutInfo), nil, addr(result.layout))
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100
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101 var
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102 bindings: seq[VkVertexInputBindingDescription]
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103 attributes: seq[VkVertexInputAttributeDescription]
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104 vertexInputInfo = result.shaderConfiguration.GetVertexInputInfo(bindings, attributes)
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105 inputAssembly = VkPipelineInputAssemblyStateCreateInfo(
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106 sType: VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO,
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107 topology: VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST,
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108 primitiveRestartEnable: VK_FALSE,
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109 )
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110 viewportState = VkPipelineViewportStateCreateInfo(
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111 sType: VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO,
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112 viewportCount: 1,
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113 scissorCount: 1,
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114 )
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115 rasterizer = VkPipelineRasterizationStateCreateInfo(
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116 sType: VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO,
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117 depthClampEnable: VK_FALSE,
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118 rasterizerDiscardEnable: VK_FALSE,
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119 polygonMode: VK_POLYGON_MODE_FILL,
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120 lineWidth: 1.0,
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121 cullMode: if backFaceCulling: toBits [VK_CULL_MODE_BACK_BIT] else: VkCullModeFlags(0),
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122 frontFace: VK_FRONT_FACE_CLOCKWISE,
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123 depthBiasEnable: VK_FALSE,
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124 depthBiasConstantFactor: 0.0,
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125 depthBiasClamp: 0.0,
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126 depthBiasSlopeFactor: 0.0,
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127 )
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128 multisampling = VkPipelineMultisampleStateCreateInfo(
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129 sType: VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO,
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130 sampleShadingEnable: VK_FALSE,
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131 rasterizationSamples: samples,
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132 minSampleShading: 1.0,
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133 pSampleMask: nil,
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134 alphaToCoverageEnable: VK_FALSE,
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135 alphaToOneEnable: VK_FALSE,
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136 )
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137 colorBlendAttachment = VkPipelineColorBlendAttachmentState(
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138 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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139 blendEnable: VK_TRUE,
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140 srcColorBlendFactor: VK_BLEND_FACTOR_SRC_ALPHA,
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141 dstColorBlendFactor: VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA,
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142 colorBlendOp: VK_BLEND_OP_ADD,
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143 srcAlphaBlendFactor: VK_BLEND_FACTOR_ONE,
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144 dstAlphaBlendFactor: VK_BLEND_FACTOR_ZERO,
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145 alphaBlendOp: VK_BLEND_OP_ADD,
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146 )
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147 colorBlending = VkPipelineColorBlendStateCreateInfo(
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148 sType: VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO,
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149 logicOpEnable: false,
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150 attachmentCount: 1,
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151 pAttachments: addr(colorBlendAttachment),
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152 )
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153 dynamicStates = @[VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR]
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154 dynamicState = VkPipelineDynamicStateCreateInfo(
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155 sType: VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO,
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156 dynamicStateCount: uint32(dynamicStates.len),
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157 pDynamicStates: dynamicStates.ToCPointer,
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158 )
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159 stages = @[result.shaderModules[0].GetPipelineInfo(), result.shaderModules[1].GetPipelineInfo()]
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160 createInfo = VkGraphicsPipelineCreateInfo(
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161 sType: VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO,
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162 stageCount: uint32(stages.len),
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163 pStages: stages.ToCPointer,
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164 pVertexInputState: addr(vertexInputInfo),
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165 pInputAssemblyState: addr(inputAssembly),
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166 pViewportState: addr(viewportState),
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167 pRasterizationState: addr(rasterizer),
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168 pMultisampleState: addr(multisampling),
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169 pDepthStencilState: nil,
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170 pColorBlendState: addr(colorBlending),
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171 pDynamicState: addr(dynamicState),
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172 layout: result.layout,
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173 renderPass: renderPass,
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174 subpass: subpass,
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175 basePipelineHandle: VkPipeline(0),
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176 basePipelineIndex: -1,
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177 )
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178 checkVkResult vkCreateGraphicsPipelines(
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179 device.vk,
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180 VkPipelineCache(0),
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181 1,
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182 addr(createInfo),
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183 nil,
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184 addr(result.vk)
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185 )
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186
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187 discard result.Uniforms # just for assertion
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188
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189
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190 proc Destroy*(pipeline: var ShaderPipeline) =
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191 assert pipeline.device.vk.Valid
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192 assert pipeline.vk.Valid
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193 assert pipeline.layout.Valid
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194 assert pipeline.descriptorSetLayout.vk.Valid
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195
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196 pipeline.shaderModules[0].Destroy()
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197 pipeline.shaderModules[1].Destroy()
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198 pipeline.descriptorSetLayout.Destroy()
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199 pipeline.device.vk.vkDestroyPipelineLayout(pipeline.layout, nil)
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200 pipeline.device.vk.vkDestroyPipeline(pipeline.vk, nil)
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201 pipeline.descriptorSetLayout.vk.Reset()
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202 pipeline.layout.Reset()
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203 pipeline.vk.Reset()