Mercurial > games > semicongine

annotate examples/E01_hello_triangle.nim @ 1091:b9401944ba0a

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do: try to increase compatability with older hardware...
author sam <sam@basx.dev>
date Sat, 06 Apr 2024 17:29:48 +0700
parents 92f0db6bbd69
children d6c27f0ed3e4
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1 import std/tables
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2
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3 import ../semicongine
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4
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5 # shader setup
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6 const
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7 shaderConfiguration = createShaderConfiguration(
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8 inputs = [
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9 attr[Vec3f]("position"),
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10 attr[Vec4f]("color"),
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11 ],
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12 intermediates = [attr[Vec4f]("outcolor")],
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13 outputs = [attr[Vec4f]("color")],
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14 vertexCode = "gl_Position = vec4(position, 1.0); outcolor = color;",
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15 fragmentCode = "color = outcolor;",
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16 )
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17
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18 # scene setup
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19 var
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20 scene = Scene(name: "scene",
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21 meshes: @[newMesh(
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22 positions = [newVec3f(-0.5, 0.5), newVec3f(0, -0.5), newVec3f(0.5, 0.5)],
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23 colors = [newVec4f(1, 0, 0, 1), newVec4f(0, 1, 0, 1), newVec4f(0, 0, 1, 1)],
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24 material = VERTEX_COLORED_MATERIAL.initMaterialData()
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25 )]
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26 )
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27 myengine = initEngine("Hello triangle", showFps = true)
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28
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29 myengine.initRenderer({VERTEX_COLORED_MATERIAL: shaderConfiguration}, inFlightFrames = 2)
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30 myengine.loadScene(scene)
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31
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32 while myengine.updateInputs() == Running and not myengine.keyWasPressed(Escape):
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33 transform[Vec3f](scene.meshes[0][], "position", scale(1.001, 1.001))
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34 myengine.renderScene(scene)
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35
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36 myengine.destroy()