Mercurial > games > semicongine

annotate semiconginev2/old/material.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del: outdated examples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/tables
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2 import std/strformat
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3 import std/strutils
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4
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5 import ./core
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6 import ./vulkan/shader
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7
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8 type
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9 MaterialType* = object
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10 name*: string
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11 vertexAttributes*: Table[string, DataType]
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12 instanceAttributes*: Table[string, DataType]
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13 attributes*: Table[string, DataType]
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14 MaterialData* = ref object # needs to be ref, so we can update stuff from other locations
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15 theType*: MaterialType
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16 name*: string
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17 attributes: Table[string, DataList]
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18 dirtyAttributes: seq[string]
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19
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20 proc HasMatchingAttribute*(materialType: MaterialType, attr: ShaderAttribute): bool =
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21 return materialType.attributes.contains(attr.name) and materialType.attributes[attr.name] == attr.theType
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22
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23 proc HasMatchingAttribute*(material: MaterialData, attr: ShaderAttribute): bool =
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24 return material.attributes.contains(attr.name) and material.attributes[attr.name].theType == attr.theType
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25
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26 template `[]`*(material: MaterialData, attributeName: string): DataList =
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27 material.attributes[attributeName]
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28 template `[]`*(material: MaterialData, attributeName: string, t: typedesc): ref seq[t] =
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29 material.attributes[attributeName][t]
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30 template `[]`*(material: MaterialData, attributeName: string, i: int, t: typedesc): untyped =
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31 material.attributes[attributeName][i, t]
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32
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33 template `[]=`*(material: var MaterialData, attribute: string, newList: DataList) =
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34 material.attributes[attribute] = newList
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35 if not material.dirtyAttributes.contains(attribute):
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36 material.dirtyAttributes.add attribute
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37 template `[]=`*[T](material: var MaterialData, attribute: string, newList: seq[T]) =
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38 material.attributes[attribute][] = newList
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39 if not material.dirtyAttributes.contains(attribute):
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40 material.dirtyAttributes.add attribute
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41 template `[]=`*[T](material: var MaterialData, attribute: string, i: int, newValue: T) =
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42 material.attributes[attribute][i] = newValue
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43 if not material.dirtyAttributes.contains(attribute):
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44 material.dirtyAttributes.add attribute
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45
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46 func DirtyAttributes*(material: MaterialData): seq[string] =
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47 material.dirtyAttributes
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48
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49 proc ClearDirtyAttributes*(material: var MaterialData) =
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50 material.dirtyAttributes.reset
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51
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52 proc `$`*(materialType: MaterialType): string =
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53 return materialType.name
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54
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55 proc AssertCanRender*(shader: ShaderConfiguration, materialType: MaterialType) =
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56 for attr in shader.inputs:
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57 if attr.perInstance:
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58 if attr.name in [TRANSFORM_ATTRIB, MATERIALINDEX_ATTRIBUTE]:
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59 continue
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60 assert materialType.instanceAttributes.contains(attr.name), &"MaterialType '{materialType}' requires instance attribute '{attr.name}' in order to be renderable with the assigned shader '{shader}'"
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61 assert materialType.instanceAttributes[attr.name] == attr.theType, &"Instance attribute '{attr.name}' of MaterialType '{materialType}' is of type {materialType.instanceAttributes[attr.name]} but assigned shader '{shader}' declares type '{attr.theType}'"
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62 else:
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63 assert materialType.vertexAttributes.contains(attr.name), &"MaterialType '{materialType}' requires vertex attribute '{attr.name}' in order to be renderable with the assigned shader '{shader}'"
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64 assert materialType.vertexAttributes[attr.name] == attr.theType, &"Vertex attribute '{attr.name}' of MaterialType '{materialType}' is of type {materialType.vertexAttributes[attr.name]} but assigned shader '{shader}' declares type '{attr.theType}'"
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65
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66 proc `$`*(material: MaterialData): string =
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67 var attributes: seq[string]
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68 for key, value in material.attributes.pairs:
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69 attributes.add &"{key}: {value}"
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70 return &"""{material.name}: [{attributes.join(", ")}]"""
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71
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72 proc InitMaterialData*(
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73 theType: MaterialType,
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74 name: string,
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75 attributes: Table[string, DataList],
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76 ): MaterialData =
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77 var theName = name
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78 if theName == "":
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79 theName = &"material instance of '{theType}'"
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80 for matName, theType in theType.attributes.pairs:
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81 assert attributes.contains(matName), &"missing material attribute '{matName}' for {theType}"
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82 assert attributes[matName].theType == theType
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83 MaterialData(
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84 theType: theType,
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85 name: theName,
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86 attributes: attributes,
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87 )
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88
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89 proc InitMaterialData*(
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90 theType: MaterialType,
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91 name: string = "",
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92 attributes: openArray[(string, DataList)] = @[],
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93 ): MaterialData =
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94 var theName = name
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95 if theName == "":
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96 theName = &"material instance of '{theType}'"
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97 InitMaterialData(theType = theType, name = theName, attributes = attributes.toTable)
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98
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99 const
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100 VERTEX_COLORED_MATERIAL* = MaterialType(
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101 name: "vertex color material",
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102 vertexAttributes: {
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103 "position": Vec3F32,
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104 "color": Vec4F32,
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105 }.toTable,
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106 )
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107 SINGLE_COLOR_MATERIAL* = MaterialType(
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108 name: "single color material",
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109 vertexAttributes: {
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110 "position": Vec3F32,
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111 }.toTable,
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112 attributes: {"color": Vec4F32}.toTable
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113 )
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114 SINGLE_TEXTURE_MATERIAL* = MaterialType(
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115 name: "single texture material",
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116 vertexAttributes: {
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117 "position": Vec3F32,
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118 "uv": Vec2F32,
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119 }.toTable,
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120 attributes: {"baseTexture": TextureType}.toTable
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121 )
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122 COLORED_SINGLE_TEXTURE_MATERIAL* = MaterialType(
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123 name: "colored single texture material",
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124 vertexAttributes: {
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125 "position": Vec3F32,
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126 "uv": Vec2F32,
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127 }.toTable,
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128 attributes: {"baseTexture": TextureType, "color": Vec4F32}.toTable
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129 )
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130 EMPTY_MATERIAL* = MaterialType(
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131 name: "empty material",
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132 vertexAttributes: {"position": Vec3F32}.toTable,
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133 instanceAttributes: {TRANSFORM_ATTRIB: Mat4F32}.toTable,
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134 )
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135 EMPTY_SHADER* = CreateShaderConfiguration(
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136 name = "empty shader",
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137 inputs = [
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138 Attr[Mat4](TRANSFORM_ATTRIB, memoryPerformanceHint = PreferFastWrite, perInstance = true),
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sam <sam@basx.dev>
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139 Attr[Vec3f]("position", memoryPerformanceHint = PreferFastRead),
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Sam <sam@basx.dev>
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140 ],
1137
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sam <sam@basx.dev>
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141 outputs = [Attr[Vec4f]("color")],
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142 vertexCode = &"gl_Position = vec4(position, 1.0) * {TRANSFORM_ATTRIB};",
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143 fragmentCode = &"color = vec4(1, 0, 1, 1);"
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144 )