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annotate tests/test_mesh.nim @ 371:f054b8bacab8

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fix: tests, test_materials and test_mesh still needs to be done
author Sam <sam@basx.dev>
date Wed, 22 Nov 2023 23:24:47 +0700
parents 61c5d5fe9d93
children f4f1474dc70a
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1 import std/algorithm
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2 import std/sequtils
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3 import std/tables
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4 import semicongine
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5
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6 proc main() =
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7 var scenes = [
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8 Scene(name: "Donut", meshes: loadMeshes("tutorialk-donat.glb", COLORED_SINGLE_TEXTURE_MATERIAL)[0].toSeq),
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9 ]
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10
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11 var engine = initEngine("Test meshes")
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12 const
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13 shaderConfiguration = createShaderConfiguration(
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14 inputs=[
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15 attr[Vec3f]("position", memoryPerformanceHint=PreferFastRead),
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16 attr[uint16]("materialIndex", memoryPerformanceHint=PreferFastRead, perInstance=true),
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17 attr[Vec2f]("texcoord_0", memoryPerformanceHint=PreferFastRead),
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18 attr[Mat4]("transform", memoryPerformanceHint=PreferFastWrite, perInstance=true),
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19 ],
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20 intermediates=[
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21 attr[Vec4f]("vertexColor"),
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22 attr[Vec2f]("colorTexCoord"),
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23 attr[uint16]("materialIndexOut", noInterpolation=true)
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24 ],
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25 outputs=[attr[Vec4f]("color")],
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26 uniforms=[
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27 attr[Mat4]("projection"),
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28 attr[Mat4]("view"),
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29 attr[Vec4f]("color", arrayCount=4),
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30 ],
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31 samplers=[attr[Texture]("baseTexture", arrayCount=4)],
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32 vertexCode="""
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33 gl_Position = vec4(position, 1.0) * (transform * Uniforms.view * Uniforms.projection);
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34 vertexColor = Uniforms.color[materialIndex];
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35 colorTexCoord = texcoord_0;
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36 materialIndexOut = materialIndex;
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37 """,
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38 fragmentCode="color = texture(baseTexture[materialIndexOut], colorTexCoord) * vertexColor;"
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39 )
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40 engine.initRenderer({COLORED_SINGLE_TEXTURE_MATERIAL: shaderConfiguration})
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41
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42 for scene in scenes.mitems:
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43 scene.addShaderGlobal("projection", Unit4F32)
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44 scene.addShaderGlobal("view", Unit4F32)
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45 engine.loadScene(scene)
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46
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47 var
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48 size = 1'f32
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49 elevation = 0'f32
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50 azimut = 0'f32
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51 currentScene = 0
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52
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53 while engine.updateInputs() == Running and not engine.keyIsDown(Escape):
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54 if engine.keyWasPressed(`1`):
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55 currentScene = 0
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56 elif engine.keyWasPressed(`2`):
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57 currentScene = 1
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58 elif engine.keyWasPressed(`3`):
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59 currentScene = 2
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60 elif engine.keyWasPressed(`4`):
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61 currentScene = 3
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62 elif engine.keyWasPressed(`5`):
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63 currentScene = 4
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64 elif engine.keyWasPressed(`6`):
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65 currentScene = 5
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66
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67 if engine.keyWasPressed(NumberRowExtra3):
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68 size = 0.3'f32
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69 elevation = 0'f32
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70 azimut = 0'f32
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71
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72 let ratio = engine.getWindow().size[0] / engine.getWindow().size[1]
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73 size *= 1'f32 + engine.mouseWheel() * 0.05
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74 azimut += engine.mouseMove().x / 180'f32
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75 elevation -= engine.mouseMove().y / 180'f32
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76 scenes[currentScene].setShaderGlobal("projection", ortho(-ratio, ratio, -1, 1, -1, 1))
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77 scenes[currentScene].setShaderGlobal(
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78 "view",
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79 scale(size, size, size) * rotate(elevation, newVec3f(1, 0, 0)) * rotate(azimut, Yf32)
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80 )
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81 engine.renderScene(scenes[currentScene])
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82 engine.destroy()
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84 when isMainModule:
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85 main()