Mercurial > games > semicongine

annotate tests/test_mesh.nim @ 388:405bb1fb52b8

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add: import-helpers for nimscripts
author Sam <sam@basx.dev>
date Sun, 03 Dec 2023 22:26:58 +0700
parents f4f1474dc70a
children 91e018270832
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1 import semicongine
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2
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3 proc main() =
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4 var scenes = [
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5 Scene(name: "Donut", meshes: loadMeshes("donut.glb", COLORED_SINGLE_TEXTURE_MATERIAL)[0].toSeq),
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6 ]
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7
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8 var engine = initEngine("Test meshes")
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9 const
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10 shaderConfiguration = createShaderConfiguration(
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11 inputs=[
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12 attr[Vec3f]("position", memoryPerformanceHint=PreferFastRead),
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13 attr[uint16]("materialIndex", memoryPerformanceHint=PreferFastRead, perInstance=true),
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14 attr[Vec2f]("texcoord_0", memoryPerformanceHint=PreferFastRead),
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15 attr[Mat4]("transform", memoryPerformanceHint=PreferFastWrite, perInstance=true),
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16 ],
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17 intermediates=[
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18 attr[Vec4f]("vertexColor"),
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19 attr[Vec2f]("colorTexCoord"),
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20 attr[uint16]("materialIndexOut", noInterpolation=true)
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21 ],
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22 outputs=[attr[Vec4f]("color")],
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23 uniforms=[
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24 attr[Mat4]("projection"),
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25 attr[Mat4]("view"),
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26 attr[Vec4f]("color", arrayCount=4),
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27 ],
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28 samplers=[attr[Texture]("baseTexture", arrayCount=4)],
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29 vertexCode="""
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30 gl_Position = vec4(position, 1.0) * (transform * Uniforms.view * Uniforms.projection);
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31 vertexColor = Uniforms.color[materialIndex];
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32 colorTexCoord = texcoord_0;
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33 materialIndexOut = materialIndex;
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34 """,
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35 fragmentCode="color = texture(baseTexture[materialIndexOut], colorTexCoord) * vertexColor;"
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36 )
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37 engine.initRenderer({COLORED_SINGLE_TEXTURE_MATERIAL: shaderConfiguration})
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38
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39 for scene in scenes.mitems:
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40 scene.addShaderGlobal("projection", Unit4F32)
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41 scene.addShaderGlobal("view", Unit4F32)
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42 engine.loadScene(scene)
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43
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44 var
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45 size = 1'f32
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46 elevation = 0'f32
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47 azimut = 0'f32
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48 currentScene = 0
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49
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50 while engine.updateInputs() == Running and not engine.keyIsDown(Escape):
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51 if engine.keyWasPressed(`1`):
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52 currentScene = 0
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53 elif engine.keyWasPressed(`2`):
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54 currentScene = 1
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55 elif engine.keyWasPressed(`3`):
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56 currentScene = 2
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57 elif engine.keyWasPressed(`4`):
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58 currentScene = 3
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59 elif engine.keyWasPressed(`5`):
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60 currentScene = 4
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61 elif engine.keyWasPressed(`6`):
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62 currentScene = 5
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63
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64 if engine.keyWasPressed(NumberRowExtra3):
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65 size = 0.3'f32
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66 elevation = 0'f32
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67 azimut = 0'f32
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68
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69 let ratio = engine.getWindow().size[0] / engine.getWindow().size[1]
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70 size *= 1'f32 + engine.mouseWheel() * 0.05
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71 azimut += engine.mouseMove().x / 180'f32
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72 elevation -= engine.mouseMove().y / 180'f32
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73 scenes[currentScene].setShaderGlobal("projection", ortho(-ratio, ratio, -1, 1, -1, 1))
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74 scenes[currentScene].setShaderGlobal(
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75 "view",
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76 scale(size, size, size) * rotate(elevation, newVec3f(1, 0, 0)) * rotate(azimut, Yf32)
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77 )
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78 engine.renderScene(scenes[currentScene])
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79 engine.destroy()
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81 when isMainModule:
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82 main()