Mercurial > games > semicongine

annotate examples/E01_hello_triangle.nim @ 1133:a52e924e5666

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add: function to generate circle-mesh data (not mesh object)
author sam <sam@basx.dev>
date Sun, 02 Jun 2024 16:21:52 +0700
parents d6c27f0ed3e4
children 71315636ba82
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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 name = "default shader",
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9 inputs = [
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10 attr[Vec3f]("position"),
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11 attr[Vec4f]("color"),
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12 ],
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fe48b091e83f did: tons of small improvments, on the way to make GPU sync (more) correct I guess
sam <sam@basx.dev>
parents: 920
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13 intermediates = [attr[Vec4f]("outcolor")],
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14 outputs = [attr[Vec4f]("color")],
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15 vertexCode = "gl_Position = vec4(position, 1.0); outcolor = color;",
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16 fragmentCode = "color = outcolor;",
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17 )
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18
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19 # scene setup
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20 var
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21 scene = Scene(name: "scene",
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22 meshes: @[newMesh(
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23 positions = [newVec3f(-0.5, 0.5), newVec3f(0, -0.5), newVec3f(0.5, 0.5)],
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24 colors = [newVec4f(1, 0, 0, 1), newVec4f(0, 1, 0, 1), newVec4f(0, 0, 1, 1)],
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25 material = VERTEX_COLORED_MATERIAL.initMaterialData()
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26 )]
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27 )
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28 myengine = initEngine("Hello triangle", showFps = true)
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30 myengine.initRenderer({VERTEX_COLORED_MATERIAL: shaderConfiguration}, inFlightFrames = 2)
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31 myengine.loadScene(scene)
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33 while myengine.UpdateInputs() and not KeyWasPressed(Escape):
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34 transform[Vec3f](scene.meshes[0][], "position", scale(1.001, 1.001))
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35 myengine.renderScene(scene)
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36
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37 myengine.destroy()